[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck

On Thu, Oct 14, 2010 at 9:50 AM, ma qiang <maqiang1984@xxxxxxxxx> wrote:
Hi all,
     When I create a new VM by copying or dding from a VM-template, the cp/dd operation takes almost all the memory and gets one cpu rate to almost 100%, resulting in the whole system getting stuck. 

Takes all the memory? How do you determine that?
anyone knows how to perform this with less cost?

In common x86 systems today, disk (throughput and IOPS) is usually the bottleneck. Try ionice, something like

ionice -n 7 -c 2 dd if= ....

it should lower disk I/O priority for the dd process, giving room for other process.

Xen-users mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.