From: Andrew Morton <akpm@linux-foundation.org>
To: David Miller <davem@davemloft.net>
Cc: eric.dumazet@gmail.com, pstaszewski@itcare.pl, netdev@vger.kernel.org
Subject: Re: [PATCH] dst: call cond_resched() in dst_gc_task()
Date: Mon, 8 Feb 2010 15:37:44 -0800 [thread overview]
Message-ID: <20100208153744.236158aa.akpm@linux-foundation.org> (raw)
In-Reply-To: <20100208.153406.123254133.davem@davemloft.net>
On Mon, 08 Feb 2010 15:34:06 -0800 (PST)
David Miller <davem@davemloft.net> wrote:
> From: Andrew Morton <akpm@linux-foundation.org>
> Date: Mon, 8 Feb 2010 15:26:06 -0800
>
> > I assume that this function spends most of its time walking over busy
> > entries? Is a more powerful data structure needed?
>
> When you're getting pounded with millions of packets per second,
> all mostly to different destinations (and thus resolving to
> different routing cache entries), this is what happens.
>
> For a busy router, really, this is normal behavior.
Is the cache a net win in that scenario?
next prev parent reply other threads:[~2010-02-08 23:37 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-08 13:16 Problem wit route cache Paweł Staszewski
2010-02-08 13:28 ` Eric Dumazet
2010-02-08 13:33 ` Paweł Staszewski
2010-02-08 13:51 ` Eric Dumazet
2010-02-08 13:59 ` Paweł Staszewski
2010-02-08 14:06 ` Eric Dumazet
2010-02-08 14:16 ` Paweł Staszewski
2010-02-08 14:32 ` Eric Dumazet
2010-02-08 19:32 ` [PATCH] dst: call cond_resched() in dst_gc_task() Eric Dumazet
2010-02-08 23:01 ` David Miller
2010-02-09 6:07 ` Eric Dumazet
2010-02-08 23:26 ` Andrew Morton
2010-02-08 23:34 ` David Miller
2010-02-08 23:37 ` Andrew Morton [this message]
2010-02-08 23:50 ` David Miller
2010-02-08 23:50 ` Stephen Hemminger
2010-02-09 6:06 ` Eric Dumazet
2010-02-09 6:35 ` Andrew Morton
2010-02-09 7:20 ` Eric Dumazet
2010-02-09 7:31 ` Andrew Morton
2010-02-08 14:32 ` Problem wit route cache Paweł Staszewski
2010-02-08 14:45 ` Paweł Staszewski
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