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From: Matan Azrad <matan@mellanox.com>
To: Alexander Kozyrev <akozyrev@mellanox.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: Raslan Darawsheh <rasland@mellanox.com>,
	Slava Ovsiienko <viacheslavo@mellanox.com>
Subject: Re: [dpdk-dev] [PATCH] net/mlx5: prefetch CQEs for a faster decompression
Date: Tue, 24 Mar 2020 15:54:25 +0000	[thread overview]
Message-ID: <AM0PR0502MB40198CBC7261FEECF1A5F4CDD2F10@AM0PR0502MB4019.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <20200324144530.25426-1-akozyrev@mellanox.com>



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_v() function from 1 to 0.85 in my environment, resulting
> in 2% boost in mpps for 64B frames single core test.
> 
> Signed-off-by: Alexander Kozyrev <akozyrev@mellanox.com>
> Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>

  reply	other threads:[~2020-03-24 15:54 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-24 14:45 Alexander Kozyrev
2020-03-24 15:54 ` Matan Azrad [this message]
2020-03-25 16:14 ` Raslan Darawsheh

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