http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1746
------- Comment #1 from jfrias@gmail.com 2011-03-29 07:22 -------
This seems to be an issue with tapdisk2 and high i/o.
Here's a sample from top when the issue is happening:
Tasks: 228 total, 2 running, 226 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.4%us, 0.0%sy, 0.0%ni, 98.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.8%st
Mem: 771328k total, 747572k used, 23756k free, 139952k buffers
Swap: 524280k total, 5440k used, 518840k free, 342188k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
15715 root 20 0 3796 2388 1868 S 9293.8 0.3 686893:40
tapdisk2
24367 root 20 0 4128 2720 1896 S 8004.8 0.4 553094:39
tapdisk2
3133 root 20 0 3928 2520 1868 S 5264.2 0.3 695773:20 tapdisk2
26586 root 20 0 4924 3516 1868 S 1370.3 0.5 450796:40 tapdisk2
The hardware profile is as follows ( no shared storage, just local storage )
Dell R710
72Gb Ram
2 x X5650 @ 2.67GHz ( 12 physical cores, 12 additional threads )
6 x 600GB 15K disks in raid 10
Dell H700 raid controller ( 512MB version )
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------- Comment #1 from jfrias@gmail.com 2011-03-29 07:22 -------
This seems to be an issue with tapdisk2 and high i/o.
Here's a sample from top when the issue is happening:
Tasks: 228 total, 2 running, 226 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.4%us, 0.0%sy, 0.0%ni, 98.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.8%st
Mem: 771328k total, 747572k used, 23756k free, 139952k buffers
Swap: 524280k total, 5440k used, 518840k free, 342188k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
15715 root 20 0 3796 2388 1868 S 9293.8 0.3 686893:40
tapdisk2
24367 root 20 0 4128 2720 1896 S 8004.8 0.4 553094:39
tapdisk2
3133 root 20 0 3928 2520 1868 S 5264.2 0.3 695773:20 tapdisk2
26586 root 20 0 4924 3516 1868 S 1370.3 0.5 450796:40 tapdisk2
The hardware profile is as follows ( no shared storage, just local storage )
Dell R710
72Gb Ram
2 x X5650 @ 2.67GHz ( 12 physical cores, 12 additional threads )
6 x 600GB 15K disks in raid 10
Dell H700 raid controller ( 512MB version )
--
Configure bugmail: http://bugzilla.xensource.com/bugzilla/userprefs.cgi?tab=email
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Xen-bugs@lists.xensource.com
http://lists.xensource.com/xen-bugs