Invalidation of consumed CQEs incurs a performance penalty
due to many cache misses caused by a non-sequential CQEs access.
Prefetch CQEs to get a better data locality and speed up the
decompression of CQEs. Prefetching reduces CPI rate of the
rxq_cq_decompress_v() function from 1 to 0.85 in my env
From: Alexander Kozyrev
> Invalidation of consumed CQEs incurs a performance penalty due to many
> cache misses caused by a non-sequential CQEs access.
> Prefetch CQEs to get a better data locality and speed up the decompression
> of CQEs. Prefetching reduces CPI rate of the
> rxq_cq_decompress_
Hi,
> -Original Message-
> From: Alexander Kozyrev
> Sent: Tuesday, March 24, 2020 4:46 PM
> To: dev@dpdk.org
> Cc: Raslan Darawsheh ; Matan Azrad
> ; Slava Ovsiienko
> Subject: [PATCH] net/mlx5: prefetch CQEs for a faster decompression
>
> Invalidation of consumed CQEs incurs a perform
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