From: Andi Kleen <andi@firstfloor.org>
To: Eric Dumazet <dada1@cosmosbay.com>
Cc: Andi Kleen <andi@firstfloor.org>,
"David S. Miller" <davem@davemloft.net>,
Linux Netdev List <netdev@vger.kernel.org>
Subject: Re: [PATCH] NET : rt_check_expire() can take a long time, add a cond_resched()
Date: Sat, 17 Nov 2007 14:08:26 +0100 [thread overview]
Message-ID: <p73fxz5auk5.fsf@bingen.suse.de> (raw)
In-Reply-To: <473C0297.5090004@cosmosbay.com> (Eric Dumazet's message of "Thu\, 15 Nov 2007 09\:25\:59 +0100")
Eric Dumazet <dada1@cosmosbay.com> writes:
> So it may sound unnecessary but in the rt_check_expire() case, with a
> loop potentially doing XXX.XXX iterations, being able to bypass the
> function call is a clear win (in my bench case, 25 ms instead of 88
> ms). Impact on I-cache is irrelevant here as this rt_check_expires()
Measuring what? And really milli-seconds? The number does not sound plausible
to me.
-Andi
next prev parent reply other threads:[~2007-11-17 13:08 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-14 21:34 [PATCH] NET : rt_check_expire() can take a long time, add a cond_resched() Eric Dumazet
2007-11-15 0:13 ` David Miller
2007-11-15 7:30 ` Andi Kleen
2007-11-15 7:37 ` Herbert Xu
2007-11-15 8:25 ` Eric Dumazet
2007-11-15 8:57 ` David Miller
2007-11-17 13:08 ` Andi Kleen [this message]
2007-11-17 16:23 ` Eric Dumazet
2007-11-17 21:46 ` Andi Kleen
2007-11-18 0:27 ` David Miller
2007-11-15 8:52 ` David Miller
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