From: David Miller <davem@davemloft.net>
To: johnpol@2ka.mipt.ru
Cc: nickpiggin@yahoo.com.au, mingo@elte.hu, wenji@fnal.gov,
akpm@osdl.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [patch 1/4] - Potential performance bottleneck for Linxu TCP
Date: Thu, 30 Nov 2006 12:14:43 -0800 (PST) [thread overview]
Message-ID: <20061130.121443.116355312.davem@davemloft.net> (raw)
In-Reply-To: <20061130102205.GA20654@2ka.mipt.ru>
From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Date: Thu, 30 Nov 2006 13:22:06 +0300
> It steals timeslices from other processes to complete tcp_recvmsg()
> task, and only when it does it for too long, it will be preempted.
> Processing backlog queue on behalf of need_resched() will break
> fairness too - processing itself can take a lot of time, so process
> can be scheduled away in that part too.
Yes, at this point I agree with this analysis.
Currently I am therefore advocating some way to allow
full input packet handling even amidst tcp_recvmsg()
processing.
next prev parent reply other threads:[~2006-11-30 20:14 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-30 1:56 Wenji Wu
2006-11-30 2:19 ` David Miller
2006-11-30 6:17 ` Ingo Molnar
2006-11-30 6:30 ` David Miller
2006-11-30 6:47 ` Ingo Molnar
2006-11-30 7:12 ` David Miller
2006-11-30 7:35 ` Ingo Molnar
2006-11-30 9:52 ` Evgeniy Polyakov
2006-11-30 10:07 ` Nick Piggin
2006-11-30 10:22 ` Evgeniy Polyakov
2006-11-30 10:32 ` Ingo Molnar
2006-11-30 17:04 ` Wenji Wu
2006-11-30 20:20 ` Ingo Molnar
2006-11-30 20:58 ` Wenji Wu
2006-11-30 20:22 ` David Miller
2006-11-30 20:30 ` Ingo Molnar
2006-11-30 20:38 ` David Miller
2006-11-30 20:49 ` Ingo Molnar
2006-11-30 20:54 ` Ingo Molnar
2006-11-30 20:55 ` David Miller
2006-11-30 20:14 ` David Miller [this message]
2006-11-30 20:42 ` Wenji Wu
2006-12-01 9:53 ` Evgeniy Polyakov
2006-12-01 23:18 ` David Miller
2006-11-30 6:56 ` Ingo Molnar
2006-11-30 16:08 ` Wenji Wu
2006-11-30 20:06 ` David Miller
2006-11-30 9:33 ` Christoph Hellwig
2006-11-30 16:51 ` Lee Revell
-- strict thread matches above, loose matches on Subject: below --
2006-11-30 2:02 Wenji Wu
2006-11-30 6:19 ` Ingo Molnar
2006-11-29 23:27 [Changelog] " Wenji Wu
2006-11-29 23:28 ` [patch 1/4] " Wenji Wu
2006-11-30 0:53 ` David Miller
2006-11-30 1:08 ` Andrew Morton
2006-11-30 1:13 ` David Miller
2006-11-30 6:04 ` Mike Galbraith
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