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From: Eric Dumazet <dada1@cosmosbay.com>
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3
Date: Thu, 1 Mar 2007 12:28:00 +0100
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Cc: Ingo Molnar <mingo@elte.hu>, Pavel Machek <pavel@ucw.cz>,
       Theodore Tso <tytso@mit.edu>,
       Linus Torvalds <torvalds@linux-foundation.org>,
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       Arjan van de Ven <arjan@infradead.org>,
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References: <Pine.LNX.4.64.0702260938450.12485@woody.linux-foundation.org> <200703011214.45144.dada1@cosmosbay.com> <20070301112017.GB27381@2ka.mipt.ru>
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On Thursday 01 March 2007 12:20, Evgeniy Polyakov wrote:
> On Thu, Mar 01, 2007 at 12:14:44PM +0100, Eric Dumazet (dada1@cosmosbay.com) 
wrote:
> > On Thursday 01 March 2007 11:59, Evgeniy Polyakov wrote:
> > > Yes, it is about 98-100% in both cases.
> > > I've just re-run tests on my amd64 test machine without debug options:
> > >
> > > epoll		4794.23
> > > kevent		6468.95
> >
> > It would be valuable if you could post oprofile results
> > (CPU_CLK_UNHALTED) for both tests.
>
> I can't - oprofile does not work on this x86_64 machine:
>

Yes, this is a known problem, but you can make it works, as I did.

Please :)

I used the CVS version of oprofile plus a patch you can find in the mailing 
list archives. Dont remember exactly, since I hit this some months ago