Re: Request Counting algorithm
am 15.12.2009 18:20:25 von ricardo figueiredo
--0015175cae180aa261047ac79b75
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Althrough, I did some tests and measuring the actives connections.
The distribuition of requests doesn't equal.
For example:
A B C D
120 158 138 117
Using RR would be:
A B C D
125 127 124 126
I think that there would be a small difference in the number of connections
between machines.
Ricardo
On Tue, Dec 15, 2009 at 2:55 PM, Andr=E9 Warnier wrote:
> ricardo figueiredo wrote:
>
>> Hi,
>>
>> I was trying to implement Round Robin in mod_proxy, but I realized that
>> Request Counting is like as Round Robin when all values of lbfactor are
>> equal.
>>
>> Is That right ???
>>
>
> That sounds like a valid deduction.
> It don't think that it is necessarily of the same level as e=3DMc2 howeve=
r.
>
> ------------------------------------------------------------ ---------
> The official User-To-User support forum of the Apache HTTP Server Project=
..
> See for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
--=20
Muito Obrigado
Ricardo
--0015175cae180aa261047ac79b75
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Althrough, I did some tests and measuring the actives connections.
=
The distribuition of requests doesn't equal.
For e=
xample:
A =A0 =A0 =A0 =A0 =A0B =A0 =A0 =A0 =A0 =A0=
C =A0 =A0 =A0 =A0 =A0 D
120 =A0 =A0 =A0158 =A0 =A0 =A0 138 =A0 =A0 =A0 117
>
Using RR would be:
A =A0 =A0 =A0 =A0 =A0B =A0 =A0 =A0 =A0 =
=A0 C =A0 =A0 =A0 =A0 =A0 D
125 =A0 =A0 =A0127 =A0 =A0 =A0 124 =
=A0 =A0 =A0 126
I think that there would be a smal=
l difference in the number of connections between machines.
Ricardo
iv>
On Tue, Dec 15, 2009 at 2:55 PM, And=
r=E9 Warnier
<aw@ice-=
sa.com> wrote:
x #ccc solid;padding-left:1ex;">
ricardo figueiredo wrote:=
x #ccc solid;padding-left:1ex">
Hi,
I was trying to implement Round Robin in mod_proxy, but I realized that
Request Counting is like as Round Robin when all values of lbfactor are
equal.
Is That right ???
That sounds like a valid deduction.
It don't think that it is necessarily of the same level as e=3DMc2 howe=
ver.
------------------------------------------------------------ ---------
The official User-To-User support forum of the Apache HTTP Server Project.<=
br>
See <URL:
lank">http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail:
g" target=3D"_blank">users-unsubscribe@httpd.apache.org
=A0" =A0 from the digest:
httpd.apache.org" target=3D"_blank">users-digest-unsubscribe@httpd.apache.o=
rg
For additional commands, e-mail:
org" target=3D"_blank">users-help@httpd.apache.org
--
Muito Obrigado
R=
icardo
--0015175cae180aa261047ac79b75--
Re: Request Counting algorithm
am 15.12.2009 18:23:47 von Eric Covener
On Tue, Dec 15, 2009 at 12:20 PM, ricardo figueiredo
wrote:
> Althrough, I did some tests and measuring the actives connections.
> The distribuition of requests doesn't equal.
> For example:
> A =A0 =A0 =A0 =A0 =A0B =A0 =A0 =A0 =A0 =A0 C =A0 =A0 =A0 =A0 =A0 D
> 120 =A0 =A0 =A0158 =A0 =A0 =A0 138 =A0 =A0 =A0 117
> Using RR would be:
> A =A0 =A0 =A0 =A0 =A0B =A0 =A0 =A0 =A0 =A0 C =A0 =A0 =A0 =A0 =A0 D
> 125 =A0 =A0 =A0127 =A0 =A0 =A0 124 =A0 =A0 =A0 126
> I think that there would be a small difference in the number of connectio=
ns
> between machines.
> Ricardo
Is the balancing coordinated across processes? Try testing with 1
child process only.
--=20
Eric Covener
covener@gmail.com
------------------------------------------------------------ ---------
The official User-To-User support forum of the Apache HTTP Server Project.
See for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org
Re: Request Counting algorithm
am 15.12.2009 20:08:10 von Jim Jagielski
Almost, but not quite. RR says "go to the next one in the list, no
matter if it was just the last one to return" whereas the request
counting one factors that in... So even though after a period of
time all will share 1/4 of the load, the ordering in which they
share it will not be the same.
On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
> Hi,
>=20
> I was trying to implement Round Robin in mod_proxy, but I realized =
that Request Counting is like as Round Robin when all values of lbfactor =
are equal.
>=20
> Is That right ???
> --=20
> Thank you
>=20
> Ricardo
------------------------------------------------------------ ---------
The official User-To-User support forum of the Apache HTTP Server Project.
See for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org
Re: Request Counting algorithm
am 15.12.2009 20:11:17 von ricardo figueiredo
--0003255550f28e5535047ac927fd
Content-Type: text/plain; charset=ISO-8859-1
Perfect !!!
I want to know "How does It work ??"
Ricardo
On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski wrote:
> Almost, but not quite. RR says "go to the next one in the list, no
> matter if it was just the last one to return" whereas the request
> counting one factors that in... So even though after a period of
> time all will share 1/4 of the load, the ordering in which they
> share it will not be the same.
>
> On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
>
> > Hi,
> >
> > I was trying to implement Round Robin in mod_proxy, but I realized that
> Request Counting is like as Round Robin when all values of lbfactor are
> equal.
> >
> > Is That right ???
> > --
> > Thank you
> >
> > Ricardo
>
>
> ------------------------------------------------------------ ---------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
--
Muito Obrigado
Ricardo
--0003255550f28e5535047ac927fd
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Perfect !!!
I want to know "How does It work ??=
"
Ricardo
uote">On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski
<=
> wrote:
>
x #ccc solid;padding-left:1ex;">Almost, but not quite. RR says "go to =
the next one in the list, no
matter if it was just the last one to return" whereas the request
counting one factors that in... So even though after a period of
time all will share 1/4 of the load, the ordering in which they
share it will not be the same.
On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
> Hi,
>
> I was trying to implement Round Robin in mod_proxy, but I realized tha=
t Request Counting is like as Round Robin when all values of lbfactor are e=
qual.
>
> Is That right ???
> --
> Thank you
>
> Ricardo
-----------------------------=
----------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.<=
br>
See <URL:
lank">http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail:
g">users-unsubscribe@httpd.apache.org
=A0 " =A0 from the digest:
@httpd.apache.org">users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail:
org">users-help@httpd.apache.org
--
Muito Obrig=
ado
Ricardo
--0003255550f28e5535047ac927fd--
Re: Request Counting algorithm
am 18.12.2009 22:01:15 von ricardo figueiredo
--0015173ff5725abf2a047b070a4e
Content-Type: text/plain; charset=ISO-8859-1
Is there RR implemented in mod_proxy ???
Independently of the lbfactor.
I need too much !!!
Thank you
Ricardo
On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo <
ricardoogrande@gmail.com> wrote:
>
> Perfect !!!
>
> I want to know "How does It work ??"
>
> Ricardo
>
> On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski wrote:
>
>> Almost, but not quite. RR says "go to the next one in the list, no
>> matter if it was just the last one to return" whereas the request
>> counting one factors that in... So even though after a period of
>> time all will share 1/4 of the load, the ordering in which they
>> share it will not be the same.
>>
>> On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
>>
>> > Hi,
>> >
>> > I was trying to implement Round Robin in mod_proxy, but I realized that
>> Request Counting is like as Round Robin when all values of lbfactor are
>> equal.
>> >
>> > Is That right ???
>> > --
>> > Thank you
>> >
>> > Ricardo
>>
>>
>> ------------------------------------------------------------ ---------
>> The official User-To-User support forum of the Apache HTTP Server Project.
>> See for more info.
>> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>> " from the digest: users-digest-unsubscribe@httpd.apache.org
>> For additional commands, e-mail: users-help@httpd.apache.org
>>
>>
>
>
> --
> Muito Obrigado
>
> Ricardo
>
--
Muito Obrigado
Ricardo
--0015173ff5725abf2a047b070a4e
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Is there RR implemented in mod_proxy ???Independently of the lbfactor.=
I need too much !!!
Thank =
you
Ricardo
On Tue, Dec 15, 200=
9 at 5:11 PM, ricardo figueiredo
<
cardoogrande@gmail.com">ricardoogrande@gmail.com> wrote:
x #ccc solid;padding-left:1ex;">
Perfect !!!
I want t=
o know "How does It work ??"
Ricardo
v>
On Tu=
e, Dec 15, 2009 at 5:08 PM, Jim Jagielski
<
mailto:jim@jagunet.com" target=3D"_blank">jim@jagunet.com> wr=
ote:
x #ccc solid;padding-left:1ex">Almost, but not quite. RR says "go to t=
he next one in the list, no
matter if it was just the last one to return" whereas the request
counting one factors that in... So even though after a period of
time all will share 1/4 of the load, the ordering in which they
share it will not be the same.
On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
> Hi,
>
> I was trying to implement Round Robin in mod_proxy, but I realized tha=
t Request Counting is like as Round Robin when all values of lbfactor are e=
qual.
>
> Is That right ???
> --
> Thank you
>
> Ricardo
------------------------------------------=
---------------------------
The official User-To-User support forum of the Apache HTTP Server Project.<=
br>
See <URL:
lank">http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail:
g" target=3D"_blank">users-unsubscribe@httpd.apache.org
=A0 " =A0 from the digest:
@httpd.apache.org" target=3D"_blank">users-digest-unsubscribe@httpd.apache.=
org
For additional commands, e-mail:
org" target=3D"_blank">users-help@httpd.apache.org
--
>Muito Obrigado
Ricardo
--
Muito Obrigado
R=
icardo
--0015173ff5725abf2a047b070a4e--
Re: Request Counting algorithm
am 21.12.2009 14:55:52 von Jim Jagielski
There is an experimental/example RR LB provider module in httpd-trunk
that I wrote that works.
On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
> Is there RR implemented in mod_proxy ???
> Independently of the lbfactor.
>=20
> I need too much !!!
>=20
> Thank you
> Ricardo
>=20
> On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo =
wrote:
>=20
> Perfect !!!
>=20
> I want to know "How does It work ??"
>=20
> Ricardo
>=20
> On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski =
wrote:
> Almost, but not quite. RR says "go to the next one in the list, no
> matter if it was just the last one to return" whereas the request
> counting one factors that in... So even though after a period of
> time all will share 1/4 of the load, the ordering in which they
> share it will not be the same.
>=20
> On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
>=20
> > Hi,
> >
> > I was trying to implement Round Robin in mod_proxy, but I realized =
that Request Counting is like as Round Robin when all values of lbfactor =
are equal.
> >
> > Is That right ???
> > --
> > Thank you
> >
> > Ricardo
>=20
>=20
> ------------------------------------------------------------ ---------
> The official User-To-User support forum of the Apache HTTP Server =
Project.
> See for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>=20
>=20
>=20
>=20
> --=20
> Muito Obrigado
>=20
> Ricardo
>=20
>=20
>=20
> --=20
> Muito Obrigado
>=20
> Ricardo
------------------------------------------------------------ ---------
The official User-To-User support forum of the Apache HTTP Server Project.
See for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org
Re: Request Counting algorithm
am 21.12.2009 15:04:02 von ricardo figueiredo
--000325557522d2443a047b3d8f09
Content-Type: text/plain; charset=ISO-8859-1
Where Can I get this algorithm ??? Which URL ???
Ricardo
On Mon, Dec 21, 2009 at 11:55 AM, Jim Jagielski wrote:
> There is an experimental/example RR LB provider module in httpd-trunk
> that I wrote that works.
>
> On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
>
> > Is there RR implemented in mod_proxy ???
> > Independently of the lbfactor.
> >
> > I need too much !!!
> >
> > Thank you
> > Ricardo
> >
> > On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo <
> ricardoogrande@gmail.com> wrote:
> >
> > Perfect !!!
> >
> > I want to know "How does It work ??"
> >
> > Ricardo
> >
> > On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski wrote:
> > Almost, but not quite. RR says "go to the next one in the list, no
> > matter if it was just the last one to return" whereas the request
> > counting one factors that in... So even though after a period of
> > time all will share 1/4 of the load, the ordering in which they
> > share it will not be the same.
> >
> > On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
> >
> > > Hi,
> > >
> > > I was trying to implement Round Robin in mod_proxy, but I realized that
> Request Counting is like as Round Robin when all values of lbfactor are
> equal.
> > >
> > > Is That right ???
> > > --
> > > Thank you
> > >
> > > Ricardo
> >
> >
> > ------------------------------------------------------------ ---------
> > The official User-To-User support forum of the Apache HTTP Server
> Project.
> > See for more info.
> > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> > " from the digest: users-digest-unsubscribe@httpd.apache.org
> > For additional commands, e-mail: users-help@httpd.apache.org
> >
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
>
>
> ------------------------------------------------------------ ---------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
--
Muito Obrigado
Ricardo
--000325557522d2443a047b3d8f09
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Where Can I get this algorithm ??? Which URL ???
Ricardo=
On Mon, Dec 21, 2009 at 11:55 AM, Jim Ja=
gielski
<jim@jagune=
t.com> wrote:
x #ccc solid;padding-left:1ex;">There is an experimental/example RR LB prov=
ider module in httpd-trunk
that I wrote that works.
On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
> Is there RR implemented in mod_proxy ???
> Independently of the lbfactor.
>
> I need too much !!!
>
> Thank you
> Ricardo
>
> On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo <
lto:ricardoogrande@gmail.com">ricardoogrande@gmail.com> wrote:
>
> Perfect !!!
>
> I want to know "How does It work ??"
>
> Ricardo
>
> On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski <
im@jagunet.com">jim@jagunet.com> wrote:
> Almost, but not quite. RR says "go to the next one in the list, n=
o
> matter if it was just the last one to return" whereas the request=
> counting one factors that in... So even though after a period of
> time all will share 1/4 of the load, the ordering in which they
> share it will not be the same.
>
> On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
>
> > Hi,
> >
> > I was trying to implement Round Robin in mod_proxy, but I realize=
d that Request Counting is like as Round Robin when all values of lbfactor =
are equal.
> >
> > Is That right ???
> > --
> > Thank you
> >
> > Ricardo
>
>
> ------------------------------------------------------------ ---------<=
br>
> The official User-To-User support forum of the Apache HTTP Server Proj=
ect.
> See <URL:
=3D"_blank">http://httpd.apache.org/userslist.html> for more info.
r>
> To unsubscribe, e-mail:
he.org">users-unsubscribe@httpd.apache.org
> =A0 " =A0 from the digest:
ribe@httpd.apache.org">users-digest-unsubscribe@httpd.apache .org
> For additional commands, e-mail:
ache.org">users-help@httpd.apache.org
>
>
>
>
> --
> Muito Obrigado
>
> Ricardo
>
>
>
> --
> Muito Obrigado
>
> Ricardo
------------------------------------------------------------ ---------
The official User-To-User support forum of the Apache HTTP Server Project.<=
br>
See <URL:
lank">http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail:
g">users-unsubscribe@httpd.apache.org
=A0 " =A0 from the digest:
@httpd.apache.org">users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail:
org">users-help@httpd.apache.org
--
Muito Obrig=
ado
Ricardo
--000325557522d2443a047b3d8f09--
Re: Request Counting algorithm
am 21.12.2009 16:54:03 von ricardo figueiredo
--000325557a76387575047b3f197e
Content-Type: text/plain; charset=ISO-8859-1
I found this link:
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy /mod_lbmethod_rr.c?view=markup&pathrev=594659
Is This code RR right ???
Ricardo
On Mon, Dec 21, 2009 at 12:04 PM, ricardo figueiredo <
ricardoogrande@gmail.com> wrote:
> Where Can I get this algorithm ??? Which URL ???
>
> Ricardo
>
>
> On Mon, Dec 21, 2009 at 11:55 AM, Jim Jagielski wrote:
>
>> There is an experimental/example RR LB provider module in httpd-trunk
>> that I wrote that works.
>>
>> On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
>>
>> > Is there RR implemented in mod_proxy ???
>> > Independently of the lbfactor.
>> >
>> > I need too much !!!
>> >
>> > Thank you
>> > Ricardo
>> >
>> > On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo <
>> ricardoogrande@gmail.com> wrote:
>> >
>> > Perfect !!!
>> >
>> > I want to know "How does It work ??"
>> >
>> > Ricardo
>> >
>> > On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski wrote:
>> > Almost, but not quite. RR says "go to the next one in the list, no
>> > matter if it was just the last one to return" whereas the request
>> > counting one factors that in... So even though after a period of
>> > time all will share 1/4 of the load, the ordering in which they
>> > share it will not be the same.
>> >
>> > On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
>> >
>> > > Hi,
>> > >
>> > > I was trying to implement Round Robin in mod_proxy, but I realized
>> that Request Counting is like as Round Robin when all values of lbfactor are
>> equal.
>> > >
>> > > Is That right ???
>> > > --
>> > > Thank you
>> > >
>> > > Ricardo
>> >
>> >
>> > ------------------------------------------------------------ ---------
>> > The official User-To-User support forum of the Apache HTTP Server
>> Project.
>> > See for more info.
>> > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>> > " from the digest: users-digest-unsubscribe@httpd.apache.org
>> > For additional commands, e-mail: users-help@httpd.apache.org
>> >
>> >
>> >
>> >
>> > --
>> > Muito Obrigado
>> >
>> > Ricardo
>> >
>> >
>> >
>> > --
>> > Muito Obrigado
>> >
>> > Ricardo
>>
>>
>> ------------------------------------------------------------ ---------
>> The official User-To-User support forum of the Apache HTTP Server Project.
>> See for more info.
>> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>> " from the digest: users-digest-unsubscribe@httpd.apache.org
>> For additional commands, e-mail: users-help@httpd.apache.org
>>
>>
>
>
> --
> Muito Obrigado
>
> Ricardo
>
--
Muito Obrigado
Ricardo
--000325557a76387575047b3f197e
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
I found this link:
trunk/modules/proxy/mod_lbmethod_rr.c?view=3Dmarkup&path rev=3D594659">h=
ttp://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/ mod_lbmethod_rr=
..c?view=3Dmarkup&pathrev=3D594659
Is This code RR right ???
Rica=
rdo
On Mon, Dec 21, 2009 at 12:04 PM, ric=
ardo figueiredo
<
l.com">ricardoogrande@gmail.com> wrote:
x #ccc solid;padding-left:1ex;">Where Can I get this algorithm ??? Which UR=
L ???
Ricardo
<=
div class=3D"gmail_quote">
On Mon, Dec 21, 2009 at 11:55 AM, Jim Jagielski
<
ef=3D"mailto:jim@jagunet.com" target=3D"_blank">jim@jagunet.com>
an> wrote:
x #ccc solid;padding-left:1ex">There is an experimental/example RR LB provi=
der module in httpd-trunk
that I wrote that works.
On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
> Is there RR implemented in mod_proxy ???
> Independently of the lbfactor.
>
> I need too much !!!
>
> Thank you
> Ricardo
>
> On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo <
lto:ricardoogrande@gmail.com" target=3D"_blank">ricardoogrande@gmail.com
>> wrote:
>
> Perfect !!!
>
> I want to know "How does It work ??"
>
> Ricardo
>
> On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski <
im@jagunet.com" target=3D"_blank">jim@jagunet.com> wrote:
> Almost, but not quite. RR says "go to the next one in the list, n=
o
> matter if it was just the last one to return" whereas the request=
> counting one factors that in... So even though after a period of
> time all will share 1/4 of the load, the ordering in which they
> share it will not be the same.
>
> On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
>
> > Hi,
> >
> > I was trying to implement Round Robin in mod_proxy, but I realize=
d that Request Counting is like as Round Robin when all values of lbfactor =
are equal.
> >
> > Is That right ???
> > --
> > Thank you
> >
> > Ricardo
>
>
> ------------------------------------------------------------ ---------<=
br>
> The official User-To-User support forum of the Apache HTTP Server Proj=
ect.
> See <URL:
=3D"_blank">http://httpd.apache.org/userslist.html> for more info.
r>
> To unsubscribe, e-mail:
he.org" target=3D"_blank">users-unsubscribe@httpd.apache.org
> =A0 " =A0 from the digest:
ribe@httpd.apache.org" target=3D"_blank">users-digest-unsubscribe@httpd.apa=
che.org
> For additional commands, e-mail:
ache.org" target=3D"_blank">users-help@httpd.apache.org
>
>
>
>
> --
> Muito Obrigado
>
> Ricardo
>
>
>
> --
> Muito Obrigado
>
> Ricardo
------------------------------------------------------------ ---------
The official User-To-User support forum of the Apache HTTP Server Project.<=
br>
See <URL:
lank">http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail:
g" target=3D"_blank">users-unsubscribe@httpd.apache.org
=A0 " =A0 from the digest:
@httpd.apache.org" target=3D"_blank">users-digest-unsubscribe@httpd.apache.=
org
For additional commands, e-mail:
org" target=3D"_blank">users-help@httpd.apache.org
--
>Muito Obrigado
Ricardo
--
Muito Obrigado
R=
icardo
--000325557a76387575047b3f197e--
Re: Request Counting algorithm
am 21.12.2009 18:06:06 von Jim Jagielski
Yep
On Dec 21, 2009, at 10:54 AM, ricardo figueiredo wrote:
> I found this link:
> =
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy /mod_lbmethod_=
rr.c?view=3Dmarkup&pathrev=3D594659
>=20
> Is This code RR right ???
>=20
> Ricardo
>=20
> On Mon, Dec 21, 2009 at 12:04 PM, ricardo figueiredo =
wrote:
> Where Can I get this algorithm ??? Which URL ???
>=20
> Ricardo
>=20
>=20
> On Mon, Dec 21, 2009 at 11:55 AM, Jim Jagielski =
wrote:
> There is an experimental/example RR LB provider module in httpd-trunk
> that I wrote that works.
>=20
> On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
>=20
> > Is there RR implemented in mod_proxy ???
> > Independently of the lbfactor.
> >
> > I need too much !!!
> >
> > Thank you
> > Ricardo
> >
> > On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo =
wrote:
> >
> > Perfect !!!
> >
> > I want to know "How does It work ??"
> >
> > Ricardo
> >
> > On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski =
wrote:
> > Almost, but not quite. RR says "go to the next one in the list, no
> > matter if it was just the last one to return" whereas the request
> > counting one factors that in... So even though after a period of
> > time all will share 1/4 of the load, the ordering in which they
> > share it will not be the same.
> >
> > On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
> >
> > > Hi,
> > >
> > > I was trying to implement Round Robin in mod_proxy, but I realized =
that Request Counting is like as Round Robin when all values of lbfactor =
are equal.
> > >
> > > Is That right ???
> > > --
> > > Thank you
> > >
> > > Ricardo
> >
> >
> > =
------------------------------------------------------------ ---------
> > The official User-To-User support forum of the Apache HTTP Server =
Project.
> > See for more info.
> > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> > " from the digest: users-digest-unsubscribe@httpd.apache.org
> > For additional commands, e-mail: users-help@httpd.apache.org
> >
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
>=20
>=20
> ------------------------------------------------------------ ---------
> The official User-To-User support forum of the Apache HTTP Server =
Project.
> See for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>=20
>=20
>=20
>=20
> --=20
> Muito Obrigado
>=20
> Ricardo
>=20
>=20
>=20
> --=20
> Muito Obrigado
>=20
> Ricardo
------------------------------------------------------------ ---------
The official User-To-User support forum of the Apache HTTP Server Project.
See for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org
Re: Request Counting algorithm
am 22.12.2009 17:56:22 von ricardo figueiredo
--0015174c1da2f08e3c047b5415e5
Content-Type: text/plain; charset=ISO-8859-1
Sorry !!!!
But doesn't work !!!!
I added RR in the end of mod_proxy !!!
Ricardo
On Mon, Dec 21, 2009 at 3:06 PM, Jim Jagielski wrote:
> Yep
>
> On Dec 21, 2009, at 10:54 AM, ricardo figueiredo wrote:
>
> > I found this link:
> >
> http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy /mod_lbmethod_rr.c?view=markup&pathrev=594659
> >
> > Is This code RR right ???
> >
> > Ricardo
> >
> > On Mon, Dec 21, 2009 at 12:04 PM, ricardo figueiredo <
> ricardoogrande@gmail.com> wrote:
> > Where Can I get this algorithm ??? Which URL ???
> >
> > Ricardo
> >
> >
> > On Mon, Dec 21, 2009 at 11:55 AM, Jim Jagielski wrote:
> > There is an experimental/example RR LB provider module in httpd-trunk
> > that I wrote that works.
> >
> > On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
> >
> > > Is there RR implemented in mod_proxy ???
> > > Independently of the lbfactor.
> > >
> > > I need too much !!!
> > >
> > > Thank you
> > > Ricardo
> > >
> > > On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo <
> ricardoogrande@gmail.com> wrote:
> > >
> > > Perfect !!!
> > >
> > > I want to know "How does It work ??"
> > >
> > > Ricardo
> > >
> > > On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski
> wrote:
> > > Almost, but not quite. RR says "go to the next one in the list, no
> > > matter if it was just the last one to return" whereas the request
> > > counting one factors that in... So even though after a period of
> > > time all will share 1/4 of the load, the ordering in which they
> > > share it will not be the same.
> > >
> > > On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
> > >
> > > > Hi,
> > > >
> > > > I was trying to implement Round Robin in mod_proxy, but I realized
> that Request Counting is like as Round Robin when all values of lbfactor are
> equal.
> > > >
> > > > Is That right ???
> > > > --
> > > > Thank you
> > > >
> > > > Ricardo
> > >
> > >
> > > ------------------------------------------------------------ ---------
> > > The official User-To-User support forum of the Apache HTTP Server
> Project.
> > > See for more info.
> > > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> > > " from the digest: users-digest-unsubscribe@httpd.apache.org
> > > For additional commands, e-mail: users-help@httpd.apache.org
> > >
> > >
> > >
> > >
> > > --
> > > Muito Obrigado
> > >
> > > Ricardo
> > >
> > >
> > >
> > > --
> > > Muito Obrigado
> > >
> > > Ricardo
> >
> >
> > ------------------------------------------------------------ ---------
> > The official User-To-User support forum of the Apache HTTP Server
> Project.
> > See for more info.
> > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> > " from the digest: users-digest-unsubscribe@httpd.apache.org
> > For additional commands, e-mail: users-help@httpd.apache.org
> >
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
>
>
> ------------------------------------------------------------ ---------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
--
Muito Obrigado
Ricardo
--0015174c1da2f08e3c047b5415e5
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Sorry !!!!
But doesn't work !!!!
I added R=
R in the end of mod_proxy !!!
Ricardo
r>
On Mon, Dec 21, 2009 at 3:06 PM, Jim Jagie=
lski
<jim@apache.org=
> wrote:
x #ccc solid;padding-left:1ex;">Yep
On Dec 21, 2009, at 10:54 AM, ricardo figueiredo wrote:
> I found this link:
>
y/mod_lbmethod_rr.c?view=3Dmarkup&pathrev=3D594659" target=3D"_blank">h=
ttp://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/ mod_lbmethod_rr=
..c?view=3Dmarkup&pathrev=3D594659
>
> Is This code RR right ???
>
> Ricardo
>
> On Mon, Dec 21, 2009 at 12:04 PM, ricardo figueiredo <
ilto:ricardoogrande@gmail.com">ricardoogrande@gmail.com> wrote:
> Where Can I get this algorithm ??? Which URL ???
>
> Ricardo
>
>
> On Mon, Dec 21, 2009 at 11:55 AM, Jim Jagielski <
jim@jagunet.com">jim@jagunet.com> wrote:
> There is an experimental/example RR LB provider module in httpd-trunk<=
br>
> that I wrote that works.
>
> On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
>
> > Is there RR implemented in mod_proxy ???
> > Independently of the lbfactor.
> >
> > I need too much !!!
> >
> > Thank you
> > Ricardo
> >
> > On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo <
=3D"mailto:ricardoogrande@gmail.com">ricardoogrande@gmail.co m> wrote=
:
> >
> > Perfect !!!
> >
> > I want to know "How does It work ??"
> >
> > Ricardo
> >
> > On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski <
lto:jim@jagunet.com">jim@jagunet.com> wrote:
> > Almost, but not quite. RR says "go to the next one in the li=
st, no
> > matter if it was just the last one to return" whereas the re=
quest
> > counting one factors that in... So even though after a period of<=
br>
> > time all will share 1/4 of the load, the ordering in which they
r>
> > share it will not be the same.
> >
> > On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
> >
> > > Hi,
> > >
> > > I was trying to implement Round Robin in mod_proxy, but I re=
alized that Request Counting is like as Round Robin when all values of lbfa=
ctor are equal.
> > >
> > > Is That right ???
> > > --
> > > Thank you
> > >
> > > Ricardo
> >
> >
> > ------------------------------------------------------------ -----=
----
> > The official User-To-User support forum of the Apache HTTP Server=
Project.
> > See <URL:
rget=3D"_blank">http://httpd.apache.org/userslist.html> for more inf=
o.
> > To unsubscribe, e-mail:
..apache.org">users-unsubscribe@httpd.apache.org
> > =A0 " =A0 from the digest:
subscribe@httpd.apache.org">users-digest-unsubscribe@httpd.a pache.org
r>
> > For additional commands, e-mail:
pd.apache.org">users-help@httpd.apache.org
> >
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
>
>
> ------------------------------------------------------------ ---------<=
br>
> The official User-To-User support forum of the Apache HTTP Server Proj=
ect.
> See <URL:
=3D"_blank">http://httpd.apache.org/userslist.html> for more info.
r>
> To unsubscribe, e-mail:
he.org">users-unsubscribe@httpd.apache.org
> =A0 " =A0 from the digest:
ribe@httpd.apache.org">users-digest-unsubscribe@httpd.apache .org
> For additional commands, e-mail:
ache.org">users-help@httpd.apache.org
>
>
>
>
> --
> Muito Obrigado
>
> Ricardo
>
>
>
> --
> Muito Obrigado
>
> Ricardo
------------------------------------------------------------ ---------
The official User-To-User support forum of the Apache HTTP Server Project.<=
br>
See <URL:
lank">http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail:
g">users-unsubscribe@httpd.apache.org
=A0 " =A0 from the digest:
@httpd.apache.org">users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail:
org">users-help@httpd.apache.org
--
Muito Obrig=
ado
Ricardo
--0015174c1da2f08e3c047b5415e5--
Re: Request Counting algorithm
am 23.12.2009 18:37:31 von ricardo figueiredo
--000325555bbaf53385047b68c612
Content-Type: text/plain; charset=ISO-8859-1
How do I add RR in mod_proxy ???
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy /mod_lbmethod_rr.c?view=markup&pathrev=594659
I
put but doesn't work !!
Ricardo
On Tue, Dec 22, 2009 at 2:56 PM, ricardo figueiredo <
ricardoogrande@gmail.com> wrote:
> Sorry !!!!
>
> But doesn't work !!!!
> I added RR in the end of mod_proxy !!!
>
> Ricardo
>
>
> On Mon, Dec 21, 2009 at 3:06 PM, Jim Jagielski wrote:
>
>> Yep
>>
>> On Dec 21, 2009, at 10:54 AM, ricardo figueiredo wrote:
>>
>> > I found this link:
>> >
>> http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy /mod_lbmethod_rr.c?view=markup&pathrev=594659
>> >
>> > Is This code RR right ???
>> >
>> > Ricardo
>> >
>> > On Mon, Dec 21, 2009 at 12:04 PM, ricardo figueiredo <
>> ricardoogrande@gmail.com> wrote:
>> > Where Can I get this algorithm ??? Which URL ???
>> >
>> > Ricardo
>> >
>> >
>> > On Mon, Dec 21, 2009 at 11:55 AM, Jim Jagielski
>> wrote:
>> > There is an experimental/example RR LB provider module in httpd-trunk
>> > that I wrote that works.
>> >
>> > On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
>> >
>> > > Is there RR implemented in mod_proxy ???
>> > > Independently of the lbfactor.
>> > >
>> > > I need too much !!!
>> > >
>> > > Thank you
>> > > Ricardo
>> > >
>> > > On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo <
>> ricardoogrande@gmail.com> wrote:
>> > >
>> > > Perfect !!!
>> > >
>> > > I want to know "How does It work ??"
>> > >
>> > > Ricardo
>> > >
>> > > On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski
>> wrote:
>> > > Almost, but not quite. RR says "go to the next one in the list, no
>> > > matter if it was just the last one to return" whereas the request
>> > > counting one factors that in... So even though after a period of
>> > > time all will share 1/4 of the load, the ordering in which they
>> > > share it will not be the same.
>> > >
>> > > On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
>> > >
>> > > > Hi,
>> > > >
>> > > > I was trying to implement Round Robin in mod_proxy, but I realized
>> that Request Counting is like as Round Robin when all values of lbfactor are
>> equal.
>> > > >
>> > > > Is That right ???
>> > > > --
>> > > > Thank you
>> > > >
>> > > > Ricardo
>> > >
>> > >
>> > > ------------------------------------------------------------ ---------
>> > > The official User-To-User support forum of the Apache HTTP Server
>> Project.
>> > > See for more info.
>> > > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>> > > " from the digest: users-digest-unsubscribe@httpd.apache.org
>> > > For additional commands, e-mail: users-help@httpd.apache.org
>> > >
>> > >
>> > >
>> > >
>> > > --
>> > > Muito Obrigado
>> > >
>> > > Ricardo
>> > >
>> > >
>> > >
>> > > --
>> > > Muito Obrigado
>> > >
>> > > Ricardo
>> >
>> >
>> > ------------------------------------------------------------ ---------
>> > The official User-To-User support forum of the Apache HTTP Server
>> Project.
>> > See for more info.
>> > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>> > " from the digest: users-digest-unsubscribe@httpd.apache.org
>> > For additional commands, e-mail: users-help@httpd.apache.org
>> >
>> >
>> >
>> >
>> > --
>> > Muito Obrigado
>> >
>> > Ricardo
>> >
>> >
>> >
>> > --
>> > Muito Obrigado
>> >
>> > Ricardo
>>
>>
>> ------------------------------------------------------------ ---------
>> The official User-To-User support forum of the Apache HTTP Server Project.
>> See for more info.
>> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>> " from the digest: users-digest-unsubscribe@httpd.apache.org
>> For additional commands, e-mail: users-help@httpd.apache.org
>>
>>
>
>
> --
> Muito Obrigado
>
> Ricardo
>
--
Muito Obrigado
Ricardo
--000325555bbaf53385047b68c612
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
How do I add RR in mod_proxy ???
=3D"font-family: arial, sans-serif; font-size: 13px; border-collapse: colla=
pse; ">
oxy/mod_lbmethod_rr.c?view=3Dmarkup&pathrev=3D594659" target=3D"_blank"=
style=3D"color: rgb(237, 28, 36); ">http://svn.apache.org/viewvc/httpd/htt=
pd/trunk/modules/proxy/mod_lbmethod_rr.c?view=3Dmarkup&p athrev=3D594659=
s=3D"Apple-style-span" style=3D"border-collapse: collapse;">
nt>
ules/proxy/mod_lbmethod_rr.c?view=3Dmarkup&pathrev=3D594 659" target=3D"=
_blank" style=3D"color: rgb(237, 28, 36); ">
span" face=3D"arial, sans-serif">
border-collapse: collapse;">I put but doesn't work !!
Ricardo
>On Tue, Dec 22, 2009 at 2:56 PM, ricardo figueiredo
<=
>=
; wrote:
x #ccc solid;padding-left:1ex;">Sorry !!!!
But doesn'=
;t work !!!!
I added RR in the end of mod_proxy !!!
>
Ricardo
class=3D"gmail_quote">On Mon, Dec 21, 2009 at 3:06 PM, Jim Jagielski
dir=3D"ltr"><
jim@ap=
ache.org> wrote:
x #ccc solid;padding-left:1ex">Yep
On Dec 21, 2009, at 10:54 AM, ricardo figueiredo wrote:
> I found this link:
>
y/mod_lbmethod_rr.c?view=3Dmarkup&pathrev=3D594659" target=3D"_blank">h=
ttp://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/ mod_lbmethod_rr=
..c?view=3Dmarkup&pathrev=3D594659
>
> Is This code RR right ???
>
> Ricardo
>
> On Mon, Dec 21, 2009 at 12:04 PM, ricardo figueiredo <
ilto:ricardoogrande@gmail.com" target=3D"_blank">ricardoogrande@gmail.com
a>> wrote:
> Where Can I get this algorithm ??? Which URL ???
>
> Ricardo
>
>
> On Mon, Dec 21, 2009 at 11:55 AM, Jim Jagielski <
jim@jagunet.com" target=3D"_blank">jim@jagunet.com> wrote:
> There is an experimental/example RR LB provider module in httpd-trunk<=
br>
> that I wrote that works.
>
> On Dec 18, 2009, at 4:01 PM, ricardo figueiredo wrote:
>
> > Is there RR implemented in mod_proxy ???
> > Independently of the lbfactor.
> >
> > I need too much !!!
> >
> > Thank you
> > Ricardo
> >
> > On Tue, Dec 15, 2009 at 5:11 PM, ricardo figueiredo <
=3D"mailto:ricardoogrande@gmail.com" target=3D"_blank">ricardoogrande@gmail=
..com> wrote:
> >
> > Perfect !!!
> >
> > I want to know "How does It work ??"
> >
> > Ricardo
> >
> > On Tue, Dec 15, 2009 at 5:08 PM, Jim Jagielski <
lto:jim@jagunet.com" target=3D"_blank">jim@jagunet.com> wrote:
> > Almost, but not quite. RR says "go to the next one in the li=
st, no
> > matter if it was just the last one to return" whereas the re=
quest
> > counting one factors that in... So even though after a period of<=
br>
> > time all will share 1/4 of the load, the ordering in which they
r>
> > share it will not be the same.
> >
> > On Dec 15, 2009, at 11:43 AM, ricardo figueiredo wrote:
> >
> > > Hi,
> > >
> > > I was trying to implement Round Robin in mod_proxy, but I re=
alized that Request Counting is like as Round Robin when all values of lbfa=
ctor are equal.
> > >
> > > Is That right ???
> > > --
> > > Thank you
> > >
> > > Ricardo
> >
> >
> > ------------------------------------------------------------ -----=
----
> > The official User-To-User support forum of the Apache HTTP Server=
Project.
> > See <URL:
rget=3D"_blank">http://httpd.apache.org/userslist.html> for more inf=
o.
> > To unsubscribe, e-mail:
..apache.org" target=3D"_blank">users-unsubscribe@httpd.apache.org
> > =A0 " =A0 from the digest:
subscribe@httpd.apache.org" target=3D"_blank">users-digest-unsubscribe@http=
d.apache.org
> > For additional commands, e-mail:
pd.apache.org" target=3D"_blank">users-help@httpd.apache.org
> >
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
> >
> >
> >
> > --
> > Muito Obrigado
> >
> > Ricardo
>
>
> ------------------------------------------------------------ ---------<=
br>
> The official User-To-User support forum of the Apache HTTP Server Proj=
ect.
> See <URL:
=3D"_blank">http://httpd.apache.org/userslist.html> for more info.
r>
> To unsubscribe, e-mail:
he.org" target=3D"_blank">users-unsubscribe@httpd.apache.org
> =A0 " =A0 from the digest:
ribe@httpd.apache.org" target=3D"_blank">users-digest-unsubscribe@httpd.apa=
che.org
> For additional commands, e-mail:
ache.org" target=3D"_blank">users-help@httpd.apache.org
>
>
>
>
> --
> Muito Obrigado
>
> Ricardo
>
>
>
> --
> Muito Obrigado
>
> Ricardo
------------------------------------------------------------ ---------
The official User-To-User support forum of the Apache HTTP Server Project.<=
br>
See <URL:
lank">http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail:
g" target=3D"_blank">users-unsubscribe@httpd.apache.org
=A0 " =A0 from the digest:
@httpd.apache.org" target=3D"_blank">users-digest-unsubscribe@httpd.apache.=
org
For additional commands, e-mail:
org" target=3D"_blank">users-help@httpd.apache.org
--
>Muito Obrigado
Ricardo
--
Muito Obrigado
R=
icardo
--000325555bbaf53385047b68c612--