On 8/11/10 11:56 AM, markham breitbach wrote:
On 11/08/10 11:59 AM, Chuck Swiger wrote:
Hi--
[...]
Sorry for the limited data, It's hard to know where to draw the line between
useful data
and information overload, but I'm more than happy to supply whatever other info
you might
find useful.
I did take a look at my dovecot logs, and there are not more than a couple of
failed auth
attempts in any given minute. Sendmail logs don't show any excessive activity
when LA
spikes either.
"vmstat -w1" shows occasional spikes of processes in the run queue, but that
doesn't
usually correlate to spikes in load average (although sometimes it is close).
[...]
load average is a time averaged thing and in the case of a
'thundering herd' problem you will see the LA spike up and
come down again over time.
Do you see any problem as a result of this? Or is it just curiosity?
you might want to use KTR or ktrace with scheduling events if you
really want to see the reason for this. It could just be a sampling
error when some 'tick' coincides with the sampling..
Wed Aug 11 12:40:55 MDT 2010
0.60 3.38 3.79
0.60 3.38 3.79
0.55 3.33 3.77
0.55 3.33 3.77
0.55 3.33 3.77
0.55 3.33 3.77
40.94 11.66 6.70
40.94 11.66 6.70
40.94 11.66 6.70
40.94 11.66 6.70
Wed Aug 11 12:41:05 MDT 2010
40.94 11.66 6.70
40.94 11.66 6.70
37.67 11.46 6.66
37.67 11.46 6.66
37.67 11.46 6.66
37.67 11.46 6.66
37.67 11.46 6.66
34.65 11.27 6.63
34.65 11.27 6.63
34.65 11.27 6.63
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