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Re: [Xen-users] Writing fast in domU crashes entire xen system
| To: | moncojhr <moncojhr@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] Writing fast in domU crashes entire xen system |
| From: | Rudi Ahlers <Rudi@xxxxxxxxxxx> |
| Date: | Fri, 18 Feb 2011 13:06:02 +0200 |
| Cc: | xen-users@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Fri, 18 Feb 2011 03:09:31 -0800 |
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On Fri, Feb 18, 2011 at 12:58 PM, moncojhr <moncojhr@xxxxxxxxx> wrote: > Having a problem here where, if I write quickly in a domU, dom0 > freezes up and I cant do anything but reboot, you can still type, just > nothing will ever do anything. > > I noticed that I am able to get much faster speeds writing in the domU > then in dom0: > > dom0: 1073741824 bytes (1.1 GB) copied, 27.3189 s, 39.3 MB/s > domU: 1073741824 bytes (1.1 GB) copied, 6.80832 s, 158 MB/s > > I do not get the freeze/lockup when writing in dom0, only when writing > quickly a lot of data in domU. > > I am using file: for my vm's , using the 2.6.32.27 dom0 from git. > > Any help would be great! > > _______________________________________________ It sounds like your domU doesn't have enough RAM so it has to use a lot of swap, which causes an I/O overload problem. Assign more RAM to the domU and see if it helps. -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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