On Thu, Mar 1, 2012 at 6:35 PM, Rayson Ho <[email protected]> wrote:
> On Thu, Mar 1, 2012 at 9:29 PM, Simon Matthews > <[email protected]> wrote: > > It is a dedicated virtual machine running on almost new server-class > > hardware. Both the qmaster and the host run Centos 6. I use KVM for > > virtualization. The qmaster is provisioned with 1GB RAM and one > processor. > > Check the memory usage vsize & RSS of the qmaster - with 1 GB of RAM & > 10K jobs, the qmaster can use up a large portion of that 1GB. > > Rayson > "free" shows 500MB free. However, "uptime" shows a load average of around 9. The qmaster appears to be using several hundred megabytes of RAM, but I don't think the VM is running short. I installed "iotop" and it shows multiple nfsd processes driving a lot of I/O. I have always assumed that the qmaster and the execution clients need to share a common SGE_ROOT directory. Is this true? If not, then I can make each execution machine have a local SGE_ROOT directory, which will eliminate the I/O from nfsd. Simon
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