From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] interesting timing tests
Date: Sun, 20 Jun 2010 08:45:35 -0400 [thread overview]
Message-ID: <1e3839eef0747b0e90b5ae21a71e41ce@kw.quanstro.net> (raw)
In-Reply-To: <6fab54d97a1b61a333f755f0595b6968@hamnavoe.com>
> Spin locks would have been high on my list of suspects.
mine, too. the 64 bit question is, which spin locks.
>
> > i'm less sure that runproc is really using 62% of the cpu
>
> Not impossible, given this:
>
> Proc*
> runproc(void)
> {
> ...
> /* waste time or halt the CPU */
> idlehands();
> ...
>
> and this:
>
> void
> idlehands(void)
> {
> if(conf.nmach == 1)
> halt();
> }
yet for one machine conf.nmach == 4 and for the
other conf.nmach == 16; neither is calling halt.
- erik
next prev parent reply other threads:[~2010-06-20 12:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-18 23:26 erik quanstrom
2010-06-19 13:42 ` Richard Miller
2010-06-20 1:36 ` erik quanstrom
2010-06-20 7:44 ` Richard Miller
2010-06-20 12:45 ` erik quanstrom [this message]
2010-06-20 16:51 ` Richard Miller
2010-06-20 21:55 ` erik quanstrom
2010-06-21 1:41 ` erik quanstrom
2010-06-21 3:46 ` Venkatesh Srinivas
2010-06-21 14:40 ` erik quanstrom
2010-06-21 16:42 ` Venkatesh Srinivas
2010-06-21 16:43 ` erik quanstrom
2010-06-21 21:11 ` Bakul Shah
2010-06-21 21:21 ` erik quanstrom
2010-06-21 21:47 ` Bakul Shah
2010-06-21 22:16 ` erik quanstrom
2010-06-22 3:24 ` Lawrence E. Bakst
2010-06-23 1:09 ` erik quanstrom
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