Slow apache proxy performance.

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Hello=2C

I am running apache 2.2.10 with mod_proxy enabled. We are config'd to run a=
s a reverse proxy.

Client
|
|
reverse proxy
|
|
application server
|
|
database


Everything works fine=2C except when the application being proxied returns =
a large data set (an oracle query result in an html table) back to the clie=
nt. The page returns=2C but takes 15 seconds++. If you go directly to the b=
ackend application server application=2C and run the same query function=2C=
it is returned in under 5 seconds=2C if not 2 seconds.

So it "seems" that the proxy is chewing up 10+ seconds. Can anyone recommen=
d a means of troubleshooting or isolating the problem? I did not turn cachi=
ng on.

Thank You for any and all help=2C
Ed


=20
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The New Busy is not the old busy. Search=2C chat and e-mail from your inbox=
..
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Hello=2C

I am running apache 2.2.10 with mod_proxy enabled. We are c=
onfig'd to run as a reverse proxy.

Client
 =3B|
 =3B|<=
br>reverse proxy
 =3B|
 =3B|
application server
 =
=3B|
 =3B|
database


Everything works fine=2C except wh=
en the application being proxied returns a large data set (an oracle query =
result in an html table) back to the client. The page returns=2C but takes =
15 seconds++. If you go directly to the backend application server applicat=
ion=2C and run the same query function=2C it is returned in under 5 seconds=
=2C if not 2 seconds.

So it "seems" that the proxy is chewing up 10+=
seconds. Can anyone recommend a means of troubleshooting or isolating the =
problem? I did not turn caching on.

Thank You for any and all help=
=2C
Ed

RE: Slow apache proxy performance.

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Oh=2C I should also note:

1. ) when the client submits the request=2C they get back an almost instant=
"initial" load of the page and "some" data=2C but it takes 15 more seconds=
for the client to receive the complete HTML data set.

2.) We have an old sun proxy server on the same network as the apache proxy=
server=2C that has a slower processor yet=2C returns the HTML data result =
in under 5 seconds (going against the exact same application as the apache =
proxy server)

Ed

From: xray316@hotmail.com
To: users@httpd.apache.org
Date: Fri=2C 19 Mar 2010 14:28:54 -0400
Subject: [users@httpd] Slow apache proxy performance.








Hello=2C

I am running apache 2.2.10 with mod_proxy enabled. We are config'd to run a=
s a reverse proxy.

Client
|
|
reverse proxy
|
|
application server
|
|
database


Everything works fine=2C except when the application being proxied returns =
a large data set (an oracle query result in an html table) back to the clie=
nt. The page returns=2C but takes 15 seconds++. If you go directly to the b=
ackend application server application=2C and run the same query function=2C=
it is returned in under 5 seconds=2C if not 2 seconds.

So it "seems" that the proxy is chewing up 10+ seconds. Can anyone recommen=
d a means of troubleshooting or isolating the problem? I did not turn cachi=
ng on.

Thank You for any and all help=2C
Ed


=20
The New Busy is not the old busy. Search=2C chat and e-mail from your inbox=
.. Get started. =20
____________________________________________________________ _____
Hotmail: Trusted email with powerful SPAM protection.
http://clk.atdmt.com/GBL/go/210850553/direct/01/=

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Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable






Oh=2C I should also note:

1. ) when the client submits the request=
=2C they get back an almost instant "initial" load of the page and "some" d=
ata=2C but it takes 15 more seconds for the client to receive the complete =
HTML data set.

2.) We have an old sun proxy server on the same netwo=
rk as the apache proxy server=2C that has a slower processor yet=2C returns=
the HTML data result in under 5 seconds (going against the exact same appl=
ication as the apache proxy server)

Ed

Re: Slow apache proxy performance.

On Fri, Mar 19, 2010 at 19:28, Keith Theman wrote:
> Hello,
>
> I am running apache 2.2.10 with mod_proxy enabled. We are config'd to run=
as
> a reverse proxy.
>
> Client
>  |
>  |
> reverse proxy
>  |
>  |
> application server
>  |
>  |
> database
>
>
> Everything works fine, except when the application being proxied returns =
a
> large data set (an oracle query result in an html table) back to the clie=
nt.
> The page returns, but takes 15 seconds++. If you go directly to the backe=
nd
> application server application, and run the same query function, it is
> returned in under 5 seconds, if not 2 seconds.
>
> So it "seems" that the proxy is chewing up 10+ seconds. Can anyone recomm=
end
> a means of troubleshooting or isolating the problem? I did not turn cachi=
ng
> on.
>

Two questions:

1. Do you refer to the backend app server by IP address (whether it be
IPv4 or IPv6)? If by name, how long does it take, on the proxying
server, to obtain the IP address from the name (use the "host" command
to find out, since it will use the full resolver library)?
2. Do you use keepalive when proxying? If no, why not?

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Francis Galiegue
ONE2TEAM
Ingénieur système
Mob : +33 (0) 683 877 875
Tel : +33 (0) 178 945 552
fge@one2team.com
40 avenue Raymond Poincaré
75116 Paris

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