Re: [PATCH v3 0/3] ntb_perf: add new 'latency' test set

[Dave Jiang <dave.jiang@intel.com>]

On 5/13/2022 12:37 PM, Alexander Fomichev wrote:
> From: Alexander Fomichev <a.fomichev@yadro.com>
>
> The ntb_perf test provides a tool for NTB hardware performance
> evaluation. For software impact elimination the test uses a simple method
> (let's call it 'burst' mode), when the local system sends to the remote
> system a data set and counts time interval until hardware completion
> report, without the remote side confirming, nor data integrity check.
> The measured metric is a 'burst' throughput bandwidth of NTB connection.
>
> The patches extend ntb_perf with 3 new metrics:
> 1) Burst latency
> 2) Poll latency
> 3) Doorbell latency
>
> The resulting test set is fully backward compatible.
>
> Alexander Fomichev (3):
>    ntb_perf: extend with burst latency measurement
>    ntb_perf: extend with poll latency measurement
>    ntb_perf: extend with doorbell latency measurement
>
>   drivers/ntb/test/ntb_perf.c | 826 +++++++++++++++++++++++++++++++++++-
>   1 file changed, 810 insertions(+), 16 deletions(-)

Looks ok to me. Probably should get Serge's ack.

Reviewed-by: Dave Jiang <dave.jiang@intel.com>