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2013 Apr 04
1
Freenas domU network performance issue
...ains on the same host is
not reliable. The last issue make it impossible to serve VM disk image from
the nas. Anybody has met the same issue?
Benchmark details below:
1. iperf bench against external host (through physical network).
The bench can fully utilize the Giga-bit network.
ext => nas ~930Mbps
nas => ext ~ 900Mbps
TSO / LRO config has no impact on the bench result.
2. iperf bench against dom0 (through virtual bridge, handled fully by
driver stack)
The bench result highly depends on TSO / LRO config.
dom0 => nas (LRO=1) 60Mbps ~ 300Mbps (vary a lot time to time, xentop
reports low...