linux-kernel - Re: 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (ACPI idle?)

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, 08 Sep 2010 23:25:22 +0100
From:	Nix <nix@...eri.org.uk>
To:	John Drescher <drescherjm@...il.com>
Cc:	Damien Wyart <damien.wyart@...e.fr>, linux-kernel@...r.kernel.org
Subject: Re: 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (ACPI idle?)

On 8 Sep 2010, John Drescher spake thusly:
> I believe I have the same problem reported in your first post. Or at
> least a lot of the symptoms.
>
> http://forums.gentoo.org/viewtopic-t-842775-postdays-0-postorder-asc-start-0.html

Yeah, that looks mostly the same, though when I see it with
CONFIG_NO_HZ, I get an increasing slowdown to unusability, not instant
sloth as you do. (The WD GreenPower thing is a complete red herring, of
course: if that was the cause of the sloth, it would be slow in other
kernels too. I see this both on machines with -- non-buggy --
GreenPowers behind an Areca RAID array, and on machines with totally
different brands of drives. ToI is likewise a complete red herring.)
--
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/