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[Xen-users] Asynchronous IO
| To: | Xen-users@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-users] Asynchronous IO |
| From: | Priya PM <pmpriya@xxxxxxxxx> |
| Date: | Wed, 7 Sep 2005 16:24:47 -0600 |
| Delivery-date: | Thu, 08 Sep 2005 06:40:18 +0000 |
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Hi,
I have installed Xen on Linux 2.6.11.10 and i am trying to do Asynchronous Direct IO on SAS drives. The application which does the asynchronous direct io on SAS drive is running on Domain 0. Actually the IOPs what i get for a 512Bytes IO size is 67, but if i do the same operation on Linux
2.6.11.10 native kernel, i get 267 IOPs.Can anyone tell me why this huge differnece? Am i missing something? In the current setup on Xen, if i do Synchronous IO, then i am getting 265 IOPs which is expected. So i am wondering why Asynchronous IO should behave this way? Is there any reason??
Thanks,
Priya _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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