On Wed, Jun 29, 2011 at 5:57 PM, Emmanuel Noobadmin <centos.admin at gmail.com>wrote: > On 6/30/11, Giovanni Tirloni <gtirloni at sysdroid.com> wrote: > > I would approach this issue from another perspective: who's locking up > the > > server (as in eating all resources) and how to stop/constrain it. You can > > try to renice the sshd process and see what happens. I'm not entirely > sure > > what 'locked up' means in this context. > > Server's unresponsive to the external world. It isn't dead, on two > occasions, when it happened at times like Sunday and 1am in the night, > I could afford to wait it out and see that it eventually does recover > from whatever it was. > > It's almost definitely related to disk i/o due to the VM guest > fighting over the disks where their virtual disk-files are. However, > the hard part is figuring out the exact factors, I know CPU isn't an > issue having set up scripts to log top output when load goes above 5. Linux includes I/O in how it calculates the load average so you're not measuring CPU alone. What does top show? Any error messages in /var/log during the time the server is unresponsive? Is network responsive? Latency normal too? -- Giovanni Tirloni -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20110629/b292b18a/attachment-0004.html>