Messages in this thread | | | Date | Fri, 3 Feb 2006 13:09:25 +0100 | From | Holger Eitzenberger <> | Subject | Re: Linux 2.6.15.2 |
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On Mon, Jan 30, 2006 at 11:34:27PM -0800, Andrew Morton wrote:
> - A skbuff_head_cache leak causes oom-killings. > > All of these only seem to affect a small minority of machines.
Hi,
I have searched for a description for the above mentioned bug report, but havent found any. Can you tell me?
The reason why I am asking that I am facing a similar problem on kernel 2.6.10. During performance tests (Intel XEON, SMP, PCI-X, e1000, 2 - 4 Gig RAM) the machine was out of memory.
Tests showed that LowFree went linearly down to a few megabytes, where most of the memory was used in skb_head_cache and size-1024 slab caches. These two summed up to ~270 MG, which was the reason for that.
/proc/net/tcp showed that most of the memory was stuck in the RX queues of some processes (two processes with ~1000 sockets each).
A look into /proc/sys/net/ipv4/tcp_mem showed that that the values in there were way to high. I hope that a reduction of these values will help (not done yet).
/holger
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