| To: | xen-users@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-users] Performance issue with blktap2? |
| From: | Nathan March <nathan@xxxxxxxxxxxxxxxxxxxx> |
| Date: | 2010年7月23日 14:59:28 -0700 |
| Delivery-date: | 2010年7月23日 15:01:00 -0700 |
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- Dual Xeon L5640, dom0 pinned to 1 cpu backed by a netapp nfs mount.- Dom 0 running a recent checkout (last day or two) from xen-4.0-testing with the pvops kernel from Jeremy's testing (2.6.31.13)
- Dom U running 2.6.32.8 Times indicated are from "time bonnie++ -u 1": file inside the dom0 (mount -o loop): file inside a vm: 2m40.515s, 2m38.181s, 2m31.788s, 2m34.391s, 2m35.671s tap:aio inside the dom0 (tapdisk2 -n and then mounting it): 3m23.040s, 3m19.900s, 3m15.406s, 3m15.594s, 3m14.867s tap:aio inside a vm: 3m54.694s, 3m49.185s, 3m50.864s, 3m57.644s, 4m1.372s Any thoughts? That's nearly a 50% performance hit.. Thanks! - Nathan _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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