Hi all, In trying to understand why netperf TCP_STREAM sucks on the ia64 platform I'm slowly collecting more data. I didn't really have any time this week to poke at this issue.
The follow data confirms in MSI-X mode mthca is essentially doing no MMIO reads. ionize:~# fgrep MSI /proc/interrupts ; pfmon -e uc_loads_retired -k --system-wide -- /opt/netperf/netperf -t TCP_STREAM -l 10 -H 10.0.0.81 -- -s 262144 -S 262144 -m 4064 ; fgrep MSI /proc/interrupts 64: 132 0 PCI-MSI-X ib_mthca (comp) 65: 2 0 PCI-MSI-X ib_mthca (async) 66: 2203 0 PCI-MSI-X ib_mthca (cmd) TCP STREAM TEST to 10.0.0.81 Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 262142 262142 4064 10.00 1564.40 CPU0 680 UC_LOADS_RETIRED CPU1 715 UC_LOADS_RETIRED 64: 373558 0 PCI-MSI-X ib_mthca (comp) 65: 2 0 PCI-MSI-X ib_mthca (async) 66: 2203 0 PCI-MSI-X ib_mthca (cmd) hth, grant _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
