Re: Really slow netstat and /proc/net/tcp in 2.4

[Simon Kirby <sim@netnation.com>]

On Thu, Oct 11, 2001 at 11:30:25PM +0400, kuznet@ms2.inr.ac.ru wrote:

> Hello!
> 
> > Is there something that changed from 2.2 -> 2.4 with regards to the
> > speed of netstat and /proc/net/tcp?
> 
> Incredibly high size of hash table, I think.
> At least here size is ~1MB. And all this is read each 1K of data read
> via /proc/ :-)

So it's walking the hash table per block read, and the hash table is very
large?  Hmm.  I notice it's a bit faster if I use dd if=/proc/net/tcp
of=/dev/null bs=1024k, but not much.

Is it possible to fix this?  Was the 2.2 hash table just that much
smaller?

Simon-

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