From: Andi Kleen <andi@firstfloor.org>
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Cc: bert hubert <bert.hubert@netherlabs.nl>,
Andi Kleen <andi@firstfloor.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: all syscalls initially taking 4usec on a P4? Re: nonblocking UDPv4 recvfrom() taking 4usec @ 3GHz?
Date: Wed, 21 Feb 2007 12:34:09 +0100 [thread overview]
Message-ID: <20070221113409.GA28479@one.firstfloor.org> (raw)
In-Reply-To: <20070221110634.GA30394@2ka.mipt.ru>
On Wed, Feb 21, 2007 at 02:06:34PM +0300, Evgeniy Polyakov wrote:
> Here is data for 50 bytes reading for essentially idle machine
> (core duo 2.4 ghz):
>
> delta for syscall: 3326961404-3326969261: 7857 cycles = 3.273750 us
Can you oprofile it too?
-Andi
next prev parent reply other threads:[~2007-02-21 11:34 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-19 23:14 nonblocking UDPv4 recvfrom() taking 4usec @ 3GHz? bert hubert
2007-02-19 23:56 ` Stephen Hemminger
2007-02-20 8:04 ` bert hubert
2007-02-20 10:50 ` Andi Kleen
2007-02-20 16:27 ` all syscalls initially taking 4usec on a P4? " bert hubert
2007-02-20 16:41 ` Evgeniy Polyakov
2007-02-20 17:02 ` bert hubert
2007-02-20 17:11 ` Evgeniy Polyakov
2007-02-20 17:18 ` Evgeniy Polyakov
2007-02-21 11:06 ` Evgeniy Polyakov
2007-02-21 11:34 ` Andi Kleen [this message]
2007-02-20 18:42 ` Josef Sipek
2007-02-20 18:48 ` Evgeniy Polyakov
2007-02-20 19:33 ` bert hubert
2007-02-20 19:40 ` Benjamin LaHaise
2007-02-20 20:45 ` bert hubert
2007-02-20 21:02 ` Stephen Hemminger
2007-02-20 22:02 ` Rick Jones
2007-02-20 22:17 ` bert hubert
2007-02-20 22:22 ` Arjan van de Ven
2007-02-21 16:25 ` Chuck Ebbert
2007-02-20 22:46 ` Ian McDonald
2007-02-25 10:41 ` Pavel Machek
2007-02-25 17:06 ` Evgeniy Polyakov
2007-02-20 16:57 ` Eric Dumazet
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