linux-kernel - Re: [RFC PATCH 0/5] enable runnable load avg in load balance

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: <50B41346.3030606@intel.com>
Date:	Tue, 27 Nov 2012 09:11:34 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	Benjamin Segall <bsegall@...gle.com>
CC:	mingo@...hat.com, peterz@...radead.org, pjt@...gle.com,
	preeti@...ux.vnet.ibm.com, vincent.guittot@...aro.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/5] enable runnable load avg in load balance

On 11/27/2012 03:03 AM, Benjamin Segall wrote:
> So, I've been trying out using the runnable averages for load balance in
> a few ways, but haven't actually gotten any improvement on the
> benchmarks I've run. I'll post my patches once I have the numbers down,
> but it's generally been about half a percent to 1% worse on the tests
> I've tried.

Did you tried this rfc patch? and what's the result of it? :)

> 
> The basic idea is to use (cfs_rq->runnable_load_avg +
> cfs_rq->blocked_load_avg) (which should be equivalent to doing
> load_avg_contrib on the rq) for cfs_rqs and possibly the rq, and
> p->se.load.weight * p->se.avg.runnable_avg_sum / period for tasks.
> 
> I have not yet tried including wake_affine, so this has just involved
> h_load (task_load_down and task_h_load), as that makes everything
> (besides wake_affine) be based on either the new averages or the
> rq->cpu_load averages.
> 

--
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/