From: Eric Dumazet <dada1@cosmosbay.com>
To: netdev@vger.kernel.org
Subject: Very long list of struct dst_entry in dst_garbage_list
Date: Fri, 05 May 2006 18:13:30 +0200 [thread overview]
Message-ID: <445B79AA.7030209@cosmosbay.com> (raw)
In-Reply-To: <445B11A3.1020407@cosmosbay.com>
I noticed that after a 'ip route flush cache' (manual or timer
triggered) on a busy server, XXXXX entries are added to dst_garbage_list.
(XXXXX depends on the number of established sockets)
Every 1/10th second (DST_GC_MIN) , net/core/dst.c::dst_run_gc() is
fired, and try to free some entries from the list, but many entries have
a non null refcnt and stay in the list for the next run.
Linux version is 2.6.17-rc3.
Do you think a rework of dst_run_gc() function is necessary, (using a
batch mode to limit the number of entries examined at each run), or is
it a "should not happen, something is broken" situation ?
Eric
next prev parent reply other threads:[~2006-05-05 16:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-03 21:19 latest -stable breaks Squid Dave Jones
2006-05-04 0:43 ` Dave Jones
2006-05-04 1:10 ` Herbert Xu
2006-05-04 1:22 ` Ben Greear
2006-05-04 1:59 ` Ian McDonald
2006-05-04 23:25 ` David S. Miller
2006-05-04 23:30 ` Herbert Xu
2006-05-04 23:47 ` Dave Jones
2006-05-05 8:49 ` [x86_64, NET] smp_rmb() in dst_destroy() seems very expensive, ditto in kfree_skb() Eric Dumazet
2006-05-05 10:06 ` Herbert Xu
2006-05-05 16:13 ` Eric Dumazet [this message]
2006-05-05 17:05 ` Andi Kleen
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