From: Con Kolivas <kernel@kolivas.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux list <linux-kernel@vger.kernel.org>, malc <av1474@comtv.ru>,
zwane@infradead.org, ck list <ck@vds.kolivas.org>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [patch] sched: accurate user accounting
Date: Sun, 25 Mar 2007 18:39:23 +1000 [thread overview]
Message-ID: <200703251839.24148.kernel@kolivas.org> (raw)
In-Reply-To: <20070325075134.GA14453@elte.hu>
On Sunday 25 March 2007 17:51, Ingo Molnar wrote:
> * Con Kolivas <kernel@kolivas.org> wrote:
> > For an rsdl 0.33 patched kernel. Comments? Overhead worth it?
>
> we want to do this - and we should do this to the vanilla scheduler
> first and check the results. I've back-merged the patch to before RSDL
> and have tested it - find the patch below. Vale, could you try this
> patch against a 2.6.21-rc4-ish kernel and re-test your testcase?
Great. That should fix a lot of misconceptions about cpu usage and HZ.
However-
> +/*
> + * Some helpers for converting nanosecond timing to jiffy resolution
> + */
> +#define NS_TO_JIFFIES(TIME) ((TIME) / (1000000000 / HZ))
> +#define JIFFIES_TO_NS(TIME) ((TIME) * (1000000000 / HZ))
> +
This hunk is already in mainline so it will be double defined now.
Thanks.
--
-ck
next prev parent reply other threads:[~2007-03-25 8:40 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-25 1:59 [PATCH] [RFC] sched: accurate user accounting Con Kolivas
2007-03-25 2:14 ` Con Kolivas
2007-03-25 7:51 ` [patch] " Ingo Molnar
2007-03-25 8:39 ` Con Kolivas [this message]
2007-03-25 9:04 ` Ingo Molnar
2007-03-25 11:34 ` malc
2007-03-25 11:46 ` Con Kolivas
2007-03-25 12:02 ` Con Kolivas
2007-03-25 12:32 ` Gene Heskett
2007-03-25 12:41 ` Con Kolivas
2007-03-25 13:33 ` Gene Heskett
2007-03-25 13:05 ` malc
2007-03-25 13:06 ` malc
2007-03-25 14:15 ` Con Kolivas
2007-03-25 14:57 ` malc
2007-03-25 15:08 ` Con Kolivas
2007-03-25 15:19 ` malc
2007-03-25 15:28 ` Con Kolivas
2007-03-25 17:14 ` malc
2007-03-25 23:01 ` Con Kolivas
2007-03-25 23:57 ` Con Kolivas
2007-03-26 10:49 ` malc
2007-03-28 11:37 ` Ingo Molnar
2007-06-14 17:56 ` Vassili Karpov
2007-06-14 20:42 ` Ingo Molnar
2007-06-14 20:56 ` malc
2007-06-14 21:18 ` Ingo Molnar
2007-06-14 21:37 ` malc
2007-06-15 3:44 ` Balbir Singh
2007-06-15 6:07 ` malc
2007-06-16 13:21 ` Balbir Singh
2007-06-16 14:07 ` malc
2007-06-16 18:40 ` Ingo Molnar
2007-06-16 20:31 ` malc
-- strict thread matches above, loose matches on Subject: below --
2007-03-26 5:11 Al Boldi
2007-03-26 5:27 ` Mike Galbraith
2007-03-26 8:45 ` Con Kolivas
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