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From: Dell Will <coolwilled@hotmail.com>
To: users <users@dpdk.org>
Subject: [dpdk-users] Why not prefetch the second cache line of struct rte_mbuf for better performance ?
Date: Tue, 26 Mar 2019 09:03:45 +0000	[thread overview]
Message-ID: <TY2PR04MB3808A8797DBB532510FDE6EDDF5F0@TY2PR04MB3808.apcprd04.prod.outlook.com> (raw)

Hello, everybody

I find that many codes in DPDK only prefetch the first cache line of struct rte_mbuf.
The struct rte_mbuf has 2 cache lines.
Why not prefetch the second line ?
Is it hinted that the CPU (x64 or ARM) always automatically prefetch the next immediately followed cache line ?

Thanks a lot !

________________________________
coolwilled@hotmail.com

             reply	other threads:[~2019-03-26  9:03 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-26  9:03 Dell Will [this message]
2019-03-26 10:53 ` Van Haaren, Harry

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