From: Bernd Petrovitsch <bernd@firmix.at>
To: art@usfltd.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: kernel-x64-smp-multiprocessor-time util problem
Date: Wed, 21 Jun 2006 10:33:52 +0200 [thread overview]
Message-ID: <1150878832.16346.2.camel@tara.firmix.at> (raw)
In-Reply-To: <20060621031742.7tlid5zm4kgg4488@69.222.0.225>
On Wed, 2006-06-21 at 03:17 -0500, art@usfltd.com wrote:
> Quoting Bernd Petrovitsch <bernd@firmix.at>:
> > On Mon, 2006-06-19 at 18:04 -0500, art@usfltd.com wrote:
> >> on dual core amd-athlon under 64bit-smp core
> >>
> >> kernel compilation time:
> >>
> >> time make -j 8
> >> ...
> >> LD [M] sound/usb/snd-usb-lib.ko
> >> LD [M] sound/usb/usx2y/snd-usb-usx2y.ko
> >>
> >> real 18m0.948s
> >> user 26m6.270s ------bad
> >> sys 4m22.256s ------?bad
> >> [xxx@localhost linux-2.6.17]$
> >> --- real-clock time is ~18 min -- user and system time doubled?
> >
> > How many virtual CPUs (i.e. HT is "2 CPUs") do you have in that machine?
[...]
> 1 CPU 2 cores = 2 (amd athlon x2 4200+)
What does "real" really measure?
What does "user" and "sys" really measure?
Bernd
--
Firmix Software GmbH http://www.firmix.at/
mobil: +43 664 4416156 fax: +43 1 7890849-55
Embedded Linux Development and Services
next prev parent reply other threads:[~2006-06-21 8:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-19 23:04 art
2006-06-19 23:17 ` Bernd Petrovitsch
2006-06-21 8:17 ` art
2006-06-21 8:33 ` Bernd Petrovitsch [this message]
2006-06-21 9:24 ` Andi Kleen
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