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From: Andi Kleen <>
To: Michal Margula <>
Subject: Re: Disaster under heavy network load on 2.4.x
Date: 13 Jun 2001 11:01:18 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>
In-Reply-To: Michal Margula's message of "11 Jun 2001 22:12:27 +0200"

Michal Margula <> writes:

> Hello!
> My friend told me to noticed you about problems I had with 2.4.x line of
> kernels. I started up from 2.4.3. Under heavy load I was getting
> messages from telnet, ping, nmap "No buffer space available". Strace
> told me it was error marked as ENOBUFS.

You probably need to increase various sysctls to handle your load. 
E.g. /proc/sys/net/ipv4/tcp_mem, net/core/[rw]mem_{max,default}, neigh/
defaults/gc_thresh* (for the ARP table) 

> First thought was it was my fault. I asked many people and nobody could
> help me. So I tried 2.4.5. It was a disaster also (should I mention few
> oopses?:>).

When you have oopses run them through ksymoops and send them to the list.


       reply	other threads:[~2001-06-13  9:01 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <>
2001-06-13  9:01 ` Andi Kleen [this message]
2001-06-11 20:03 Michal Margula
2001-06-11 21:02 ` Martin Josefsson
2001-06-12 18:18 ` David Ford

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