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    SubjectRe: Linux 2.6.15.2
    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

    --
    ICQ 2882018 ++ Jabber: octavian@amessage.de ++
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