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

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Date:	Thu, 1 Mar 2007 14:20:19 +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 12:14:44PM +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:

#opcontrol --setup --vmlinux=/home/s0mbre/aWork/git/linux-2.6.kevent/vmlinux
# opcontrol --start
Using default event: CPU_CLK_UNHALTED:100000:0:1:1
/usr/bin/opcontrol: line 994: /dev/oprofile/0/enabled: No such file or
directory
/usr/bin/opcontrol: line 994: /dev/oprofile/0/event: No such file or
directory
/usr/bin/opcontrol: line 994: /dev/oprofile/0/count: No such file or
directory
/usr/bin/opcontrol: line 994: /dev/oprofile/0/kernel: No such file or
directory
/usr/bin/opcontrol: line 994: /dev/oprofile/0/user: No such file or
directory
/usr/bin/opcontrol: line 994: /dev/oprofile/0/unit_mask: No such file or
directory

# ls -l /dev/oprofile/
total 0
drwxr-xr-x 1 root root 0 2007-03-01 09:41 1
drwxr-xr-x 1 root root 0 2007-03-01 09:41 2
drwxr-xr-x 1 root root 0 2007-03-01 09:41 3
-rw-r--r-- 1 root root 0 2007-03-01 09:41 backtrace_depth
-rw-r--r-- 1 root root 0 2007-03-01 09:41 buffer
-rw-r--r-- 1 root root 0 2007-03-01 09:41 buffer_size
-rw-r--r-- 1 root root 0 2007-03-01 09:41 buffer_watershed
-rw-r--r-- 1 root root 0 2007-03-01 09:41 cpu_buffer_size
-rw-r--r-- 1 root root 0 2007-03-01 09:41 cpu_type
-rw-rw-rw- 1 root root 0 2007-03-01 09:41 dump
-rw-r--r-- 1 root root 0 2007-03-01 09:41 enable
-rw-r--r-- 1 root root 0 2007-03-01 09:41 pointer_size
drwxr-xr-x 1 root root 0 2007-03-01 09:41 stats

> Thank you

-- 
	Evgeniy Polyakov
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