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xen-bugs
[Xen-bugs] [Bug 1233] New: Network driver performance
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1233
Summary: Network driver performance
Product: Xen
Version: unstable
Platform: Other
OS/Version: Windows
Status: NEW
Severity: normal
Priority: P2
Component: winpv
AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
ReportedBy: andy.grover@xxxxxxxxxx
With vcpus=1, I think TX performance is
good and repeatable, but when testing RX, dom0 reports a high number of
dropped packets - the Indicate routine takes a while during which time
the ring fills up again and overflows. With vcpus=2 I get wildly varying
performance measurements for both TX and RX. At gigabit speeds, a 256
slot ring probably isn't big enough. We may need to get the packets off
the ring and put them on a list and then indicate them later. This would
improve things on an SMP system. Also, I never see more than one packet
being given to us in SendPackets...
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