Roland Dreier wrote:
Vu> Hi Roland, Any progress/update on your review and merging up
Vu> this patch
Sorry, I've been distracted by the huge mass of other code that has
been submitted at the same time.
By the way, do you have a test that you use to measure the performance
impact of using FMRs? Can you post any numbers?
I don't have a good test to measure performance; however, I ran multiple
dd streams on raw devices (no filesystem or buffer cache involved) to
measure the impact of using FMRs. With Mellanox srp target referenced
implementation SW + 14 SATA drives + PCI-E lion cub, I hit 850 MB/s with
FMRs and 710 MB/s without it.
Do you have a good test to measure performance?
Please locally apply the patch, measure the performance impact and post
any numbers if possible with your setup
Thanks,
Vu
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