XenServer Virtual Machine Performance Utility is a XenServer virtual machine that helps troubleshoot performance related issues, such as poor performance caused by storage I/O and network I/O. The virtual machine, built on Debian Linux, contains the following test utilities and is accessible over a Web based user interface:

Disk I/O performance utility – It can be used to conduct the following disk I/Os to measure: sequential read/writes and random read/writes with various specified block sizes.

Network I/O performance utility – It is essentially a modified version of netperf. Additional information about netperf can be found at https://www.netperf.org. Netperf runs on the back end and provides end-to-end request/response round trip latency and TCP/UDP throughput tests.

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