Date: Tue, 22 Aug 2006 12:21:58 +0800 From: "Jiawei Ye" <leafy7382@gmail.com> To: "Dan Nelson" <dnelson@allantgroup.com> Cc: Mike Jakubik <mikej@rogers.com>, stable@freebsd.org Subject: Re: TOP shows above 100% WCPU usage Message-ID: <c21e92e20608212121g6c2f2015nad01aec68db97a87@mail.gmail.com> In-Reply-To: <20060815172728.GB88051@dan.emsphone.com> References: <44E1F796.5070105@rogers.com> <20060815172728.GB88051@dan.emsphone.com>
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On 8/16/06, Dan Nelson <dnelson@allantgroup.com> wrote:
> > How can mysql use 160%? Is this a reporting bug in top because mysql is
> > threaded?
>
> You have multiple CPUs, so a threaded process can theoretically reach
> 100*ncpus cpu usage.
>
> --
> Dan Nelson
> dnelson@allantgroup.com
I am seeing this on a UP system too.
last pid: 35355; load averages: 0.36, 0.08, 0.03 up 1+12:11:39 12:20:56
205 processes: 3 running, 202 sleeping
CPU states: 97.8% user, 0.0% nice, 1.5% system, 0.0% interrupt, 0.7% idle
Mem: 122M Active, 52M Inact, 59M Wired, 7808K Cache, 34M Buf, 524K Free
Swap: 1024M Total, 40M Used, 984M Free, 3% Inuse
PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
35343 www 22 4 0 275M 64620K accept 0:21 271.92% java
767 jabber 1 91 0 8836K 1284K select 7:07 0.00% perl5.8.8
875 pgsql 1 91 0 19880K 1748K select 0:20 0.00% postgres
840 vscan 1 4 0 22892K 18304K accept 0:17 0.00% clamd
4733 www 27 4 0 17428K 3268K kqread 0:10 0.00% httpd
--
"Without the userland, the kernel is useless."
--inspired by The Tao of Programming
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