Description of problem: When Running iostat -x 10 4 I get the following output which is clearly not correct as the machine is almost completely idle avg-cpu: %user %nice %sys %idle 4.12 0.00 0.45 95.42 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util sda 0.00 7.30 0.00 3.10 0.00 84.00 27.10 4294937.42 38.71 3225.81 100.00 sda1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda3 0.00 2.00 0.00 1.20 0.00 25.60 21.33 0.07 58.33 16.67 0.20 sda4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda5 0.00 1.50 0.00 0.70 0.00 17.60 25.14 0.02 28.57 28.57 0.20 sda6 0.00 3.80 0.00 1.20 0.00 40.80 34.00 4294957.33 25.00 8325.00 99.90 sda7 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda8 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda9 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 on other machines I get the following output which Is what I would expect :- avg-cpu: %user %nice %sys %idle 41.27 0.00 1.32 57.40 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util sda 4.20 2.50 13.00 7.70 137.60 81.60 10.59 1.11 53.62 22.22 4.60 sda1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda3 0.00 0.90 0.00 1.30 0.00 17.60 13.54 0.02 15.38 7.69 0.10 sda4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda5 0.00 0.50 0.00 0.70 0.00 9.60 13.71 0.03 42.86 14.29 0.10 sda6 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda7 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda8 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda9 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda11 4.20 1.10 13.00 5.70 137.60 54.40 10.27 1.06 56.68 24.60 4.60 sdb 659.50 6.90 486.50 11.10 9168.00 144.00 18.71 14.72 29.58 8.18 40.70 sdb1 659.50 6.90 486.50 11.10 9168.00 144.00 18.71 14.72 29.58 8.18 40.70
Does the problem still show with a recent kernel erratum?
Hi - I'm testing a newer upstream version of the sysstat package that appears to correct this problem. You can find a copy at http://people.redhat.com/ccb/sysstat/2.1AS/<arch>/5.0.5-3. If you are willing to try it out, your feedback would be greatly appreciated. Thanks