linux-kernel - Re: Quad core CPUs loaded at only 50% when running a CPU and mmap intensive multi-threaded task

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: <1219660622.8515.26.camel@twins>
Date:	Mon, 25 Aug 2008 12:37:02 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Török Edwin <edwintorok@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, rml@...h9.net,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"Thomas Gleixner mingo@...hat.com" <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: Quad core CPUs loaded at only 50% when running a CPU and mmap
	intensive multi-threaded task

On Mon, 2008-08-25 at 13:22 +0300, Török Edwin wrote:
>  
> >> Why did 2.6.24 seem to work better?
> >>     

> > That might cause some overhead on very high context switch rates.
> 
> No difference, and turning off the other features from sched_features 
> doesn't seem to help either.

OK, I'll poke a little more at is later today to see if I can spot
something

--
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/