linux-kernel - Re: Network performance degradation from 2.6.11.12 to 2.6.16.20

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Message-Id: <20060919.124131.130617144.davem@davemloft.net>
Date:	Tue, 19 Sep 2006 12:41:31 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	master@...torb.msk.ru
Cc:	kuznet@....inr.ac.ru, ak@...e.de, hawk@...u.dk,
	harry@...os.washington.edu, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: Network performance degradation from 2.6.11.12 to 2.6.16.20

From: "Vladimir B. Savkin" <master@...torb.msk.ru>
Date: Tue, 19 Sep 2006 02:03:31 +0400

> On Tue, Sep 19, 2006 at 02:00:38AM +0400, Alexey Kuznetsov wrote:
> > * I do see get_offset_pmtmr() in top lines of profile. That's scary enough.
> 
> I had it at the very top line.

That is just rediculious.

You can "fix" the networking by making it timestamp less but what
about things like just normal X11 clients that call gettimeofday()
at very high rates?
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