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From: Anton Starikov <ant.starikov@gmail.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg KH <greg@kroah.com>,
	stable@kernel.org, Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	bugzilla-daemon@bugzilla.kernel.org,
	bugme-daemon@bugzilla.kernel.org,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance
Date: Wed, 24 Mar 2010 00:19:15 +0100	[thread overview]
Message-ID: <D5C7B0DA-D29F-4612-A90B-7051CFC04AA4@gmail.com> (raw)
In-Reply-To: <alpine.LFD.2.00.1003231602130.18017@i5.linux-foundation.org>

Tomorrow I will try to patch and check 2.6.33 and see are this patches enough to restore performance or not, because on 2.6.33 kernel performance issue also used to involve somehow crgoup business (and performance was terrible even comparing to broken 2.6.32). If it will not fix 2.6.33, then I will ask to reopen the bug, otherwise I will post to stable@.

Thanks again for help,
Anton.

On Mar 24, 2010, at 12:04 AM, Linus Torvalds wrote:

> 
> 
> On Tue, 23 Mar 2010, Anton Starikov wrote:
>> 
>> I think we got a winner!
>> 
>> Problem seems to be fixed.
>> 
>> Just for record, I used next patches:
>> 
>> 59c33fa7791e9948ba467c2b83e307a0d087ab49
>> 5d0b7235d83eefdafda300656e97d368afcafc9a
>> 1838ef1d782f7527e6defe87e180598622d2d071
>> 4126faf0ab7417fbc6eb99fb0fd407e01e9e9dfe
>> bafaecd11df15ad5b1e598adc7736afcd38ee13d
>> 0d1622d7f526311d87d7da2ee7dd14b73e45d3fc
> 
> Ok. If you have performance numbers for before/after these patches for 
> your actual workload, I'd suggest posting them to stable@kernel.org, and 
> maybe those rwsem fixes will get back-ported.
> 
> The patches are pretty small, and should be fairly safe. So they are 
> certainly stable material.
> 
> 		Linus


WARNING: multiple messages have this Message-ID (diff)
From: Anton Starikov <ant.starikov@gmail.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg KH <greg@kroah.com>,
	stable@kernel.org, Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	bugzilla-daemon@bugzilla.kernel.org,
	bugme-daemon@bugzilla.kernel.org,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance
Date: Wed, 24 Mar 2010 00:19:15 +0100	[thread overview]
Message-ID: <D5C7B0DA-D29F-4612-A90B-7051CFC04AA4@gmail.com> (raw)
In-Reply-To: <alpine.LFD.2.00.1003231602130.18017@i5.linux-foundation.org>

Tomorrow I will try to patch and check 2.6.33 and see are this patches enough to restore performance or not, because on 2.6.33 kernel performance issue also used to involve somehow crgoup business (and performance was terrible even comparing to broken 2.6.32). If it will not fix 2.6.33, then I will ask to reopen the bug, otherwise I will post to stable@.

Thanks again for help,
Anton.

On Mar 24, 2010, at 12:04 AM, Linus Torvalds wrote:

> 
> 
> On Tue, 23 Mar 2010, Anton Starikov wrote:
>> 
>> I think we got a winner!
>> 
>> Problem seems to be fixed.
>> 
>> Just for record, I used next patches:
>> 
>> 59c33fa7791e9948ba467c2b83e307a0d087ab49
>> 5d0b7235d83eefdafda300656e97d368afcafc9a
>> 1838ef1d782f7527e6defe87e180598622d2d071
>> 4126faf0ab7417fbc6eb99fb0fd407e01e9e9dfe
>> bafaecd11df15ad5b1e598adc7736afcd38ee13d
>> 0d1622d7f526311d87d7da2ee7dd14b73e45d3fc
> 
> Ok. If you have performance numbers for before/after these patches for 
> your actual workload, I'd suggest posting them to stable@kernel.org, and 
> maybe those rwsem fixes will get back-ported.
> 
> The patches are pretty small, and should be fairly safe. So they are 
> certainly stable material.
> 
> 		Linus

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  reply	other threads:[~2010-03-23 23:19 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-15618-10286@https.bugzilla.kernel.org/>
2010-03-23 14:22 ` [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance Andrew Morton
2010-03-23 14:22   ` Andrew Morton
2010-03-23 17:34   ` Ingo Molnar
2010-03-23 17:34     ` Ingo Molnar
2010-03-23 17:45     ` Linus Torvalds
2010-03-23 17:45       ` Linus Torvalds
2010-03-23 17:57       ` Anton Starikov
2010-03-23 17:57         ` Anton Starikov
2010-03-23 18:00       ` Ingo Molnar
2010-03-23 18:00         ` Ingo Molnar
2010-03-23 18:03         ` Anton Starikov
2010-03-23 18:03           ` Anton Starikov
2010-03-23 18:21           ` Andrew Morton
2010-03-23 18:21             ` Andrew Morton
2010-03-23 18:25             ` Anton Starikov
2010-03-23 18:25               ` Anton Starikov
2010-03-23 19:22               ` Robin Holt
2010-03-23 19:22                 ` Robin Holt
2010-03-23 19:30                 ` Anton Starikov
2010-03-23 19:30                   ` Anton Starikov
2010-03-23 19:49                   ` Robin Holt
2010-03-23 19:49                     ` Robin Holt
2010-03-23 19:57                     ` Robin Holt
2010-03-23 19:57                       ` Robin Holt
2010-03-23 19:50                 ` Anton Starikov
2010-03-23 19:50                   ` Anton Starikov
2010-03-23 19:52             ` Linus Torvalds
2010-03-23 19:52               ` Linus Torvalds
2010-03-24 16:40           ` Roland Dreier
2010-03-24 16:40             ` Roland Dreier
2010-03-26  3:24             ` Anton Starikov
2010-03-26  3:24               ` Anton Starikov
2010-03-23 19:14       ` Anton Starikov
2010-03-23 19:14         ` Anton Starikov
2010-03-23 19:17         ` Peter Zijlstra
2010-03-23 19:17           ` Peter Zijlstra
2010-03-23 19:42           ` Anton Starikov
2010-03-23 19:54         ` Linus Torvalds
2010-03-23 19:54           ` Linus Torvalds
2010-03-23 20:43           ` Anton Starikov
2010-03-23 20:43             ` Anton Starikov
2010-03-23 23:04             ` Linus Torvalds
2010-03-23 23:04               ` Linus Torvalds
2010-03-23 23:19               ` Anton Starikov [this message]
2010-03-23 23:19                 ` Anton Starikov
2010-03-23 23:36               ` Ingo Molnar
2010-03-23 23:36                 ` Ingo Molnar
2010-03-23 23:55                 ` Linus Torvalds
2010-03-23 23:55                   ` Linus Torvalds
2010-03-24  0:03                   ` Anton Starikov
2010-03-24  0:03                     ` Anton Starikov
2010-03-24  2:15                   ` Andi Kleen
2010-03-24  2:15                     ` Andi Kleen
2010-03-24  3:00                     ` Linus Torvalds
2010-03-24  3:00                       ` Linus Torvalds
2010-04-19 18:19                       ` Greg KH
2010-04-19 18:19                         ` Greg KH
2010-03-23 18:13     ` Andrew Morton
2010-03-23 18:13       ` Andrew Morton
2010-03-23 18:19       ` Anton Starikov
2010-03-23 18:19         ` Anton Starikov
2010-03-23 18:27       ` Ingo Molnar
2010-03-23 18:27         ` Ingo Molnar
2010-03-23 21:19       ` Anton Starikov
2010-03-23 21:19         ` Anton Starikov
2010-04-02 18:57   ` Lee Schermerhorn

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