Kernel read/write Blocksize

Hello everybody,

some of my colleagues told me that the internel Buffsize ist 4k.
Yesterday I saw in the Kernelconfigurations that the default value for
the stacksize is 8k and you can set it to 4k.

Kernel hacking -> Use 4Kb for kernel stacks instead of 8Kb



So my question is: Is the stacksize simular to the read/write size?
And what ist the best read/write size when I build my
own networkingprogramms?

--
Regards Neal
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