linux-kernel - Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

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Message-ID: <20070301114731.GA20773@2ka.mipt.ru>
Date:	Thu, 1 Mar 2007 14:47:31 +0300
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Pavel Machek <pavel@....cz>,
	Theodore Tso <tytso@....edu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ulrich Drepper <drepper@...hat.com>,
	linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@....com.au>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Zach Brown <zach.brown@...cle.com>,
	"David S. Miller" <davem@...emloft.net>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Davide Libenzi <davidel@...ilserver.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

On Thu, Mar 01, 2007 at 12:28:00PM +0100, Eric Dumazet (dada1@...mosbay.com) wrote:
> On Thursday 01 March 2007 12:20, Evgeniy Polyakov wrote:
> > On Thu, Mar 01, 2007 at 12:14:44PM +0100, Eric Dumazet (dada1@...mosbay.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 can not resist :)

> 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

Could you provide at least remote way to find it?

I only found the same problem at 
http://lkml.org/lkml/2006/10/27/3

but without any hits to solve the problem.

I will try CVS oprofile, if it works I will provide details of course.

My tree is based on rc1 and has this latest commit:
commit b5bf28cde894b3bb3bd25c13a7647020562f9ea0
Author: Linus Torvalds <torvalds@...dy.linux-foundation.org>
Date:   Wed Feb 21 11:21:44 2007 -0800

There are no commits after that data with word 'oprofile' in
git-whatchanged at least.

-- 
	Evgeniy Polyakov
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