netdev - Re: kernel 2.6.25-rc7 highly unstable on high load

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Message-ID: <47ED1583.5010204@cosmosbay.com>
Date:	Fri, 28 Mar 2008 16:57:55 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	Denys Fedoryshchenko <denys@...p.net.lb>, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org
Subject: Re: kernel 2.6.25-rc7 highly unstable on high load

Eric Dumazet a écrit :
> Denys Fedoryshchenko a écrit :
>> Already patched and tested, it doesn't change anything.
>>
>>   
>
> We still leak dsts somewhere.
>
> You could try git bisect, or try to patch net/core/dst.c so that 
> dst_gc_task() (line 83) displays
> route informations for say 10 first entries found in the dst_busy_list
> (refcnt, interface, source IP, dest IP, things like that) that could 
> ring a bell given your netfilter rules or network conf.

I cooked a patch (untested) to implement this idea :

It should display lines similar to /proc/net/rt_cache (reusing the same 
helper function)

Signed-off-by: Eric Dumazet <dada1@...mosbay.com>

 include/net/dst.h |    2 +
 net/core/dst.c    |    7 ++++++
 net/ipv4/route.c  |   47 ++++++++++++++++++++++++++------------------
 3 files changed, 37 insertions(+), 19 deletions(-)



View attachment "show_info.patch" of type "text/plain" (4070 bytes)