linux-kernel - Re: [PATCH v2 0/8] Fix performance issue with ondemand governor

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]

Message-ID: <20100509174936.GB17881@elte.hu>
Date:	Sun, 9 May 2010 19:49:36 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	linux-kernel@...r.kernel.org, davej@...hat.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH v2  0/8] Fix performance issue with ondemand governor


* Arjan van de Ven <arjan@...radead.org> wrote:

> [Version 2 includes the acks/etc. Andrew: no changes from the patches that 
> are in -mm]
> 
> There have been various reports of the ondemand governor causing some 
> serious performance issues, one of the latest ones from Andrew. There are 
> several fundamental issues with ondemand (being worked on), but the report 
> from Andrew can be fixed relatively easily.
> 
> The fundamental issue is that ondemand will go to a (too) low CPU frequency 
> for workloads that alternatingly disk and CPU bound...

I've applied your series to sched/core and started testing it, thanks Arjan!

	Ingo
--
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/