Hello, i have machine with 2 domU every one have big database and many query''s .. i''m using 1 hdd SATA II 7200 .. when any one of 2 gustes make high VBD_WR the other work very slow !! can i limit hard w/r for every gust or i make every domU work in sprat hard drive ? thanks _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Mon, Mar 8, 2010 at 9:39 AM, Alaa eldin <sirash23@gmail.com> wrote:> Hello, > i have machine with 2 domU every one have big database and many query''s ..that''s not a good candidate for virtualization> i''m using 1 hdd SATA II 7200 ..... especially when you have only one disk. Chances are it maxed out around 150 iops.> when any one of 2 gustes make high VBD_WR > the other work very slow !!that''s how it is when you''re I/O bound.> can i limit hard w/r for every gust or i make every domU work in sprat hard > drive ?No native xen functionality for that (yet), but you can try http://sourceforge.net/apps/trac/ioband/ Note that since all your domUs need lots of disk I/O, limiting I/O will not solve the problem. you need more drives and spread the I/O load. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> > Note that since all your domUs need lots of disk I/O, limiting I/O > will not solve the problem. > you need more drives and spread the I/O load.And at least 10K RPM drives, if not 15K RPM drives. Or SSDs, if you''re comfortable using those... -------- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users