[Xen-users] GPLPV Driver and SMP

[Klaus Steinberger <klaus.steinberger@xxxxxxxxxxxxxxxxxxxxxx>]

Hello,

I try the 0.9.11-pre12 version of the gplpv drivers. They seem to work 
nicely, but annoyingly slow on a SMP Windows 2003 virtual machine:
[root@xen02 ~]# ttcp -t -s tsm-neu.bl-group.physik.uni-muenchen.de
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001
ttcp-t: sockbufsize=1048576,  # tcp -> 
tsm-neu.bl-group.physik.uni-muenchen.de #
ttcp-t: connect
ttcp-t: 16777216 bytes in 0.368 real seconds = 44494.293 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.184, calls/sec = 5561.787
ttcp-t: 0.000user 0.120sys 0:00real 33% 0i+0d 0maxrss 0+3pf 25+25csw
[root@xen02 ~]# ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001
ttcp-r: sockbufsize=1048576,  # tcp #
ttcp-r: accept from 192.168.180.199
ttcp-r: 819200 bytes in 15.175 real seconds = 52.719 KB/sec +++
ttcp-r: 240 I/O calls, msec/call = 64.745, calls/sec = 15.816
ttcp-r: 0.000user 0.004sys 0:15real 0% 0i+0d 0maxrss 0+2pf 296+0csw
[root@xen02 ~]#

It looks like it waits too long for packets to be sent.

Sincerly,
Klaus

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