Hi, From dom0 how would one determine which domU is doing lot of I/O? I have 15 domUs and willing to find out their disk IO usage. Xen is 3.0.3 running under RHEL 5.7 Thanks! Paras.
Hi, for example you can use iotop.. processes from xen using I/O should show up like blkback.<domU ID>.<hdd> 2012/6/26 Paras pradhan <pradhanparas@gmail.com>:> Hi, > > From dom0 how would one determine which domU is doing lot of I/O? I > have 15 domUs and willing to find out their disk IO usage. > > Xen is 3.0.3 running under RHEL 5.7 > > Thanks! > Paras. > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xen.org > http://lists.xen.org/xen-users
On 6/26/2012 11:25 AM, Paras pradhan wrote:> Hi, > > >From dom0 how would one determine which domU is doing lot of I/O? I > have 15 domUs and willing to find out their disk IO usage. > > Xen is 3.0.3 running under RHEL 5.7 > > Thanks! > Paras. > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xen.org > http://lists.xen.org/xen-users >Have you tried running "sudo xentop"?? "Xentop displays real-time information about a Xen system." http://wiki.xen.org/wiki/Xentop(1)
Using iotop I don''t see blktap.domid.device using much IO but instead I see tapdisk using it such as by this process tapdisk /dev/xen/tapctrwrie20 /devxen/tapctrlread20. Also I don''t see DISK WRITE and DISK READ being changed a lot .. Instead I see SWAPIN and IO being changed quite frequently. What is SWAPIN and IO btw? Thanks Paras. On Tue, Jun 26, 2012 at 10:36 AM, Matthias <matthias.kannenberg@googlemail.com> wrote:> Hi, > > for example you can use iotop.. processes from xen using I/O should > show up like blkback.<domU ID>.<hdd> > > 2012/6/26 Paras pradhan <pradhanparas@gmail.com>: >> Hi, >> >> From dom0 how would one determine which domU is doing lot of I/O? I >> have 15 domUs and willing to find out their disk IO usage. >> >> Xen is 3.0.3 running under RHEL 5.7 >> >> Thanks! >> Paras. >> >> _______________________________________________ >> Xen-users mailing list >> Xen-users@lists.xen.org >> http://lists.xen.org/xen-users
What should we be looking in xentop? VBD_WR? I can see it always being zero if thats what we need to look. Paras. On Tue, Jun 26, 2012 at 10:44 AM, <cyberhawk001@gmail.com> wrote:> On 6/26/2012 11:25 AM, Paras pradhan wrote: >> >> Hi, >> >> >From dom0 how would one determine which domU is doing lot of I/O? I >> have 15 domUs and willing to find out their disk IO usage. >> >> Xen is 3.0.3 running under RHEL 5.7 >> >> Thanks! >> Paras. >> >> _______________________________________________ >> Xen-users mailing list >> Xen-users@lists.xen.org >> http://lists.xen.org/xen-users >> > > Have you tried running "sudo xentop"?? "Xentop displays real-time > information about a Xen system." > > http://wiki.xen.org/wiki/Xentop(1) > > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xen.org > http://lists.xen.org/xen-users