On Fri, October 25, 2013 1:36 pm, Michael Chesterton wrote: > I know it's resolved, but look at the 6th column in the original post. > 90+% iowait, 90% of the time, the cpu is waiting for IO.
Michael, thanks I hope it's resolved 'permanently', in the last 48 hours it happened twice, last might from 11pm till about 2:30am, day before from 5am till 9am in the last few weeks, my cacti 'load average' crept up, which wasn't really expected, as there was no real changes to server, nor was usage increase observed (possibly, though unlikely) so perhaps overload of disk storage caused VPS load average increase creep ? > now what you should do is run the same command when everything is working > normally so you'll know what the output looks like. Then when you have > another problem, you can compare with the normal output. -- sar -s Linux 2.6.32-358.23.2.el6.x86_64 10/25/2013 _x86_64_ (2 CPU) 08:00:01 AM CPU %user %nice %system %iowait %steal %idle 08:10:02 AM all 4.47 0.01 1.00 2.57 0.00 91.95 08:20:02 AM all 4.26 0.01 0.97 4.95 0.00 89.81 08:30:01 AM all 4.00 0.00 0.88 1.54 0.00 93.57 08:40:01 AM all 4.38 0.01 0.87 1.98 0.00 92.76 08:50:01 AM all 4.13 0.01 0.96 5.63 0.00 89.28 09:00:01 AM all 4.71 0.01 1.02 1.19 0.00 93.07 09:10:01 AM all 4.51 0.01 0.98 3.25 0.00 91.26 09:20:01 AM all 3.99 0.01 0.94 2.62 0.00 92.44 09:30:01 AM all 3.70 0.01 0.93 1.25 0.00 94.11 09:40:02 AM all 3.73 0.00 0.83 2.10 0.00 93.35 09:50:01 AM all 4.22 0.01 0.96 2.51 0.00 92.30 10:00:01 AM all 4.53 0.01 1.01 2.37 0.00 92.08 10:10:01 AM all 4.37 0.01 1.10 5.13 0.00 89.40 10:20:02 AM all 4.70 0.01 1.15 6.29 0.00 87.85 10:30:01 AM all 4.35 0.01 1.07 5.80 0.00 88.78 10:40:01 AM all 4.68 0.01 1.18 5.92 0.00 88.21 10:50:01 AM all 4.31 0.01 1.19 11.61 0.00 82.88 11:00:02 AM all 4.97 0.01 1.26 9.37 0.00 84.39 11:10:02 AM all 5.19 0.01 1.27 14.86 0.00 78.68 11:20:01 AM all 4.75 0.01 0.99 4.16 0.00 90.09 11:30:01 AM all 4.54 0.01 0.93 1.32 0.00 93.20 11:40:01 AM all 3.88 0.01 0.84 0.85 0.00 94.42 11:50:01 AM all 4.37 0.01 0.96 2.71 0.00 91.96 12:00:01 PM all 5.15 0.01 1.19 2.46 0.00 91.19 12:10:01 PM all 5.44 0.01 1.23 3.18 0.00 90.14 12:20:01 PM all 5.03 0.02 1.28 3.04 0.00 90.63 12:30:01 PM all 5.39 0.01 1.34 2.84 0.00 90.42 12:40:01 PM all 5.18 0.01 1.24 3.18 0.00 90.39 12:50:01 PM all 5.21 0.01 1.18 2.21 0.00 91.39 01:00:01 PM all 5.40 0.01 1.18 1.61 0.00 91.80 01:10:01 PM all 5.25 0.01 1.11 3.16 0.00 90.47 01:20:01 PM all 5.83 0.01 1.16 2.77 0.00 90.23 01:30:01 PM all 5.01 0.01 1.13 0.97 0.00 92.88 01:40:01 PM all 5.32 0.01 1.04 0.79 0.00 92.85 01:50:01 PM all 4.58 0.01 0.96 1.60 0.00 92.84 02:00:01 PM all 4.73 0.01 0.95 2.62 0.00 91.69 02:10:01 PM all 4.93 0.01 1.04 3.05 0.00 90.97 02:20:01 PM all 4.39 0.01 0.92 2.05 0.00 92.63 02:30:01 PM all 4.46 0.01 0.91 3.06 0.00 91.55 02:40:01 PM all 4.78 0.01 1.15 5.80 0.00 88.27 02:50:02 PM all 5.19 0.01 1.11 3.47 0.00 90.23 03:00:01 PM all 4.24 0.01 0.98 2.86 0.00 91.91 03:10:01 PM all 5.91 0.01 1.21 4.25 0.00 88.62 Average: all 4.70 0.01 1.06 3.60 0.00 90.63 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
