[ofa-general] Not seeing any SDP performance changes in OFED 1.3 beta, and I get Oops when enabling sdp_zcopy_thresh

[Rick Jones]

Scott Weitzenkamp (sweitzen) wrote:
> Using netperf with TCP_STREAM and TCP_RR, I'm not seeing any changes in
> SDP throughput or CPU utilization comparing OFED 1.3 beta and OFED
> 1.2.5.  Looks like I need to set a non-zero value in
> /sys/module/ib_sdp/sdp_zcopy_thresh?  Do you plan to enable this by
> default soon?

I know there wasn't univeral agreement as to the need, but there _are_ 
"native" SDP tests in netperf2 now, which I think would be better to use 
where possible since they will have "correct" headers lest someone look 
at a cut and paste ages from now and mistakenly think it was actually 
TCP rather than SDP.

happy benchmarking,

rick jones

unless of course one wants to test the LD_PRELOAD mechanism...