[Stgt-devel] Performance of SCST versus STGT

Bart Van Assche bart.vanassche
Fri Jan 25 08:24:50 CET 2008

On Jan 24, 2008 8:54 PM, Vladislav Bolkhovitin <vst at vlnb.net> wrote:
> Ib_rdma_bw now reports 933 MB/s on the same system, correct? Those
> ~250MB/s difference is what you will gain with zero-copy IO implemented
> and what STGT with the current architecture has no chance to achieve.

Yes, that's correct:
* ib_rdma_bw, ib_write_bw and ib_read_bw report 933 MB/s between the
two test systems.
* ib_read_bw reports 905 MB/s.
* ib_rdma_lat reports 3.1 microseconds.
* ib_read_lat reports 7.5 microseconds.


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