[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Monitoring I/O rate for each VMs
On Mon, Nov 27, 2006 at 09:41:12AM +0000, Keir Fraser wrote: > On 27/11/06 09:25, "Thomas Goirand" <thomas@xxxxxxxxxx> wrote: > > >> Unfortunately these count requests rather than bytes served. This may be > >> what you want though, as #requests should be proportional to the number of > >> expensive disc operations (seeking and settling). Long contiguous requests > >> are not proportionally more expensive than short ones. > > > > I didn't find such file where you said. Even a "locate statistics" > > didn't help. Note that I'm using lvm partitions, and xen 3.0.2-2 (and > > 2.0.7 in some older servers), and my LVs are of form /dev/lvm1/xen01, is > > <path-to-vdb> for loopback? Note also, "xm top", followed by 'b' shows the same statistics. > I think the stats were added during 3.0.3 development. There's no way to get > the information you seek with older versions of Xen, although you could try > taking the blkback driver from a 3.0.3 tree and build it against your Linux > dom0 kernel. Note that these stats don't work for tap:aio: block devices, eg # grep disk /etc/xen/sarge1 disk = [ 'tap:aio:/home/sarge1/root_fs,sda1,w', 'tap:aio:/home/sarge1/swap,sda2,w' ] # xm list sarge1 Name ID Mem(MiB) VCPUs State Time(s) sarge1 2 128 4 -b---- 22.2 # cat /sys/block/dm-2/stat 0 0 0 0 0 0 0 0 0 0 0 -- Nick Craig-Wood <nick@xxxxxxxxxxxxxx> -- http://www.craig-wood.com/nick _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |