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 =; _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"