I hope this in the right list, but I was wondering if someone could help me
with a VM I have that has lately started having problems. It had been
running for years without problems. It's possible an update is causing this,
but I can't say.
The VM is running CentOS 5.8 and after a time, the machine begins to slow
down. Things like pings or running commands lag. If I reboot the VM, it runs
normally for at least a few hours, but it eventually slows again.
I've tried changing the VM's virtio devices to standard devices like IDE
and
e1000, but it makes no difference. Currently its running virtio.
Top shows that nothing is taking up significant cpu time, but even running
top takes several seconds for it to open. The system is slow now, but top
shows:
top - 21:39:48 up 1 day, 5:27, 1 user, load average: 0.93, 1.37, 1.12
Tasks: 177 total, 1 running, 176 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.3%us, 0.3%sy, 0.0%ni, 98.6%id, 0.9%wa, 0.0%hi, 0.0%si,
0.0%st
Mem: 2075016k total, 1484624k used, 590392k free, 64336k buffers
Swap: 4128760k total, 12k used, 4128748k free, 981368k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4124 root 20 0 2444 1080 812 R 0.1 0.1 0:00.03 top
1 root 15 0 2176 692 604 S 0.0 0.0 0:02.46 init
2 root RT -5 0 0 0 S 0.0 0.0 0:00.39 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
Any ideas what to look for? Any information I can provide?
Thanks
How about a top on the host? Could the virtual machine be getting swapped out on the host? -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- Eskimo North Linux Friendly Internet Access, Shell Accounts, and Hosting. Knowledgeable human assistance, not telephone trees or script readers. See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874. On Sun, 19 May 2013, compdoc wrote:> Date: Sun, 19 May 2013 21:54:44 -0600 > From: compdoc <compdoc at hotrodpc.com> > To: centos-virt at centos.org > Subject: [CentOS-virt] VM Slowness > > I hope this in the right list, but I was wondering if someone could help me > with a VM I have that has lately started having problems. It had been > running for years without problems. It's possible an update is causing this, > but I can't say. > > The VM is running CentOS 5.8 and after a time, the machine begins to slow > down. Things like pings or running commands lag. If I reboot the VM, it runs > normally for at least a few hours, but it eventually slows again. > > I've tried changing the VM's virtio devices to standard devices like IDE and > e1000, but it makes no difference. Currently its running virtio. > > Top shows that nothing is taking up significant cpu time, but even running > top takes several seconds for it to open. The system is slow now, but top > shows: > > top - 21:39:48 up 1 day, 5:27, 1 user, load average: 0.93, 1.37, 1.12 > Tasks: 177 total, 1 running, 176 sleeping, 0 stopped, 0 zombie > Cpu(s): 0.3%us, 0.3%sy, 0.0%ni, 98.6%id, 0.9%wa, 0.0%hi, 0.0%si, > 0.0%st > Mem: 2075016k total, 1484624k used, 590392k free, 64336k buffers > Swap: 4128760k total, 12k used, 4128748k free, 981368k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > > 4124 root 20 0 2444 1080 812 R 0.1 0.1 0:00.03 top > > 1 root 15 0 2176 692 604 S 0.0 0.0 0:02.46 init > > 2 root RT -5 0 0 0 S 0.0 0.0 0:00.39 migration/0 > > 3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0 > > > Any ideas what to look for? Any information I can provide? > > Thanks > > > > > > > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > http://lists.centos.org/mailman/listinfo/centos-virt >
<div>Did you try this vm on other host with diffrentš virtualization system(Virtual Box, etc)?</div><div>š</div><div>20.05.2013, 07:55, "compdoc" <compdoc@hotrodpc.com>:</div><blockquote type="cite"><p>I hope this in the right list, but I was wondering if someone could help me<br />with a VM I have that has lately started having problems. It had been<br />running for years without problems. It's possible an update is causing this,<br />but I can't say.<br /><br />The VM is running CentOS 5.8 and after a time, the machine begins to slow<br />down. Things like pings or running commands lag. If I reboot the VM, it runs<br />normally for at least a few hours, but it eventually slows again. <br /><br />I've tried changing the VM's virtio devices to standard devices like IDE and<br />e1000, but it makes no difference. Currently its running virtio.<br /><br />Top shows that nothing is taking up significant cpu time, but even running<br />top takes several seconds for it to open. The system is slow now, but top<br />shows:<br /><br />top - 21:39:48 up 1 day, š5:27, š1 user, šload average: 0.93, 1.37, 1.12<br />Tasks: 177 total, šš1 running, 176 sleeping, šš0 stopped, šš0 zombie<br />Cpu(s): š0.3%us, š0.3%sy, š0.0%ni, 98.6%id, š0.9%wa, š0.0%hi, š0.0%si,<br />0.0%st<br />Mem: šš<span>2075016</span>k total, š<span>1484624</span>k used, šš590392k free, ššš64336k buffers<br />Swap: š<span>4128760</span>k total, šššššš12k used, š<span>4128748</span>k free, šš981368k cached<br /><br />ššPID USER šššššPR šNI šVIRT šRES šSHR S %CPU %MEM šššTIME+ šCOMMAND<br /><br />š4124 root ššššš20 šš0 š<span>2444 1080</span> š812 R š0.1 š0.1 šš0:00.03 top<br /><br />šššš1 root ššššš15 šš0 š2176 š692 š604 S š0.0 š0.0 šš0:02.46 init<br /><br />šššš2 root šššššRT š-5 šššš0 ššš0 ššš0 S š0.0 š0.0 šš0:00.39 migration/0<br /><br />šššš3 root ššššš34 š19 šššš0 ššš0 ššš0 S š0.0 š0.0 šš0:00.00 ksoftirqd/0<br /><br /><br />Any ideas what to look for? Any information I can provide?<br /><br />Thanks<br /><br /><br /><br /><br /><br /><br />_______________________________________________<br />CentOS-virt mailing list<br /><a href="mailto:CentOS-virt@centos.org">CentOS-virt@centos.org</a><br /><a href="http://lists.centos.org/mailman/listinfo/centos-virt">http://lists.centos.org/mailman/listinfo/centos-virt</a></p></blockquote><div>š</div><div>š</div><div>-- <br />ôÒÕÄÎÏ ÖÉÔØ ÎÉÞÅÇÏ ÎÅ ÄÅÌÁÑ, ÎÏ ÍÙ ÐÒÉ×ÙËÌÉ ÂÏÒÏÔØÓÑ Ó ÔÒÕÄÎÏÓÔÑÍÉ.</div>