At Thu, 30 Jun 2011 05:31:05 +0800 CentOS mailing list <centos at centos.org> wrote: > > On 6/30/11, Giovanni Tirloni <gtirloni at sysdroid.com> wrote: > > Linux includes I/O in how it calculates the load average so you're not > > measuring CPU alone. > > On the host, it's expected, I've got two qemu-kvm process loading up > 100% cpu. Within the guest VM, top looks like this, high load but low > cpu %. > > top - 10:21:40 up 1 day, 59 min, 0 users, load average: 16.72, 6.05, 2.29 > Tasks: 176 total, 1 running, 175 sleeping, 0 stopped, 0 zombie > Cpu(s): 3.3%us, 1.2%sy, 1.2%ni, 91.2%id, 2.7%wa, 0.1%hi, 0.2%si, 0.0%st > Mem: 1017392k total, 970564k used, 46828k free, 1436k buffers > Swap: 2040244k total, 200572k used, 1839672k free, 30344k cached > > > What does top show? > > Any error messages in /var/log during the time the server is unresponsive? > > Is network responsive? Latency normal too? > > I think the network is responsive, pings work but nothing else does. > No error messages in both host and guest. faillog, messages and dmesg > give no clue. Which is why I figured I really need to be logged in, > check and if necessary kill innocent processes one by one until I find > the culprit when it's going crazy. This looks a lot like my server looked/looks when being hit on by the spambot(s). Lots of I/O, not much CPU. Moving message bytes around, etc. What does maillog look like? There won't be errors, but how much message traffic is there? > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- Robert Heller -- 978-544-6933 / heller at deepsoft.com Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments