Hi, I have xen on a debian lenny with more then 20 VM. The supermicro
server has a raid10 with a good performance, but I have IO issues when
one VM is making backup, it affects the performance of the other VMs.
I've setup cpus, vcpus, sched-credit between dom0 and domUs as doc
recommended, but I'm still facing IO problems. So I found a way to
mediate disk access with ionice from the dom0. I mean changing
priority to domUs PID. See below more details.
I have a user that wants to run a backup of an oracle database via a file copy. They shut down the database once a week, and do a full copy. She wrote a script to do this for her, and it works, but when she runs it from cron, it takes twice as long. I took a look, and found a way to get it to... (5 Replies)