On Thu, Dec 15, 2011 at 12:51:28PM -0800, Doug Barton wrote:
> Howdy,
>
> Web server under heavy'ish load (7 on a 2 cpu system) running
> 8.2-RELEASE-p4 i386 I'm seeing this:
>
> PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
> 12 root -32 - 0K 112K WAIT 0 129:01 39.99% {swi4: clock}
>
> Any ideas why the clock should be taking so much cpu? HZ=100 if that
> makes a difference ...
>
>
Without NTPd running test the following.
apply "/usr/bin/time -ph sleep %1" 300 600 900
If the results are skewed quite a bit then your system may benefit from a
different HZ than what you have set. I have seen systems that require a HZ of
350 and as weird as it sounds NTPd may be tasting the clock too much just to
try and keep time.
--
;s =;
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