Plesk 10 Health Monitor : Apache CPU usage impossibly high

[iRapture]

Running: Plesk 10.0.1 on Ubuntu 8.04.4 on Virtuozzo 4.7

Problem: Impossibly high Apache CPU usage being reported by the Plesk Panel Health Monitor.

We recently migrated this virtual environment from another node (a Virtuozzo 4.0 node, which did have a slightly more powerful processor, but not enough to account for this discrepancy). After which it is constantly jumping in and out of "red" level on the CPU monitor with impossibly high CPU usage numbers (currently : 13025075.4% used). Top reports no such issue, and although certainly more active the node's CPU doesn't seem to be overloaded either. This definitely seems to be a bug in the Parallels software.

VE top:

top - 07:42:03 up 3 days, 5:51, 2 users, load average: 1.02, 0.95, 0.83
Tasks: 86 total, 2 running, 84 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 6.7%sy, 0.0%ni, 80.0%id, 13.3%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 5.9%us, 0.0%sy, 0.0%ni, 70.6%id, 23.5%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 46.0%us, 41.3%sy, 0.0%ni, 9.5%id, 3.2%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 0.0%us, 6.2%sy, 0.0%ni, 81.2%id, 12.5%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu5 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu6 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu7 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu8 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu9 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu10 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu11 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu12 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu13 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu14 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu15 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 4194304k total, 2052396k used, 2141908k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 1219812k cached

Node top:

top - 07:42:35 up 3 days, 6:04, 1 user, load average: 7.66, 8.11, 7.36
Tasks: 631 total, 1 running, 630 sleeping, 0 stopped, 0 zombie
Cpu0 : 22.2%us, 4.6%sy, 0.0%ni, 67.2%id, 5.6%wa, 0.0%hi, 0.3%si, 0.0%st
Cpu1 : 1.0%us, 0.7%sy, 0.0%ni, 93.7%id, 4.7%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 0.3%us, 0.0%sy, 0.0%ni, 70.7%id, 29.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 0.0%us, 0.3%sy, 0.0%ni, 9.8%id, 89.5%wa, 0.0%hi, 0.3%si, 0.0%st
Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu5 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu6 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu7 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu8 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu9 : 0.3%us, 0.0%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu10 : 0.0%us, 0.3%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu11 : 0.3%us, 0.3%sy, 0.0%ni, 99.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu12 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu13 : 0.0%us, 0.3%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu14 : 0.3%us, 0.3%sy, 0.0%ni, 99.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu15 : 0.3%us, 2.7%sy, 0.0%ni, 97.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 24538096k total, 13178072k used, 11360024k free, 1753568k buffers
Swap: 10452984k total, 0k used, 10452984k free, 6662732k cached

 

[IgorG]

Running: Plesk 10.0.1 on Ubuntu 8.04.4 on Virtuozzo 4.7
This definitely seems to be a bug in the Parallels software.

Maybe, but why you use very old Plesk version but not latest where a lot of bugs were fixed?