| To: | xen-users@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-users] A problem with the xen performance when the block device count is more than 8 |
| From: | hebzhw <junv.zhang@xxxxxxxxx> |
| Date: | 2011年2月10日 01:46:32 -0800 (PST) |
| Delivery-date: | 2011年2月11日 09:06:12 -0800 |
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I have a problem with the xen performance when the block device count is more than 8, anyone can help me? The system is centos5.5xen, and the DomU is also a centos5.5, and there are about 70 block devices. The xen version is 3.0. When I test in domain-0, the I/O throughput performance is scale with the block device count. But when I test in DomU, the performance is not scale when the block device count is more than 8. Device count Dom0 perf(MB/s) DomU perf(MB/s) 1 384 236 2 607 312.8 4 925.6 874 8 1205.5 1253 16 1579.3 677.8 24 1969 493.8 32 1893.3 501.9 40 1873.7 535.9 48 1782 556.7 56 1553.4 565.3 64 1753.4 571.5 Can anyone help me? Thanks a lot! -- View this message in context: http://xen.1045712.n5.nabble.com/A-problem-with-the-xen-performance-when-the-block-device-count-is-more-than-8-tp3379035p3379035.html Sent from the Xen - User mailing list archive at Nabble.com. _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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