linux-kernel - Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 24 Mar 2010 00:19:15 +0100
From:	Anton Starikov <ant.starikov@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Greg KH <greg@...ah.com>, stable@...nel.org,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance

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@...nel.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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/