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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: jgrajcia@cisco.com
Cc: Honnappa.Nagarahalli@arm.com, Ruifeng.Wang@arm.com, nd@arm.com,
	Phil Yang <phil.yang@arm.com>,
	dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] net/memif: relax barrier for zero copy path
Date: Fri, 18 Sep 2020 12:58:47 +0100	[thread overview]
Message-ID: <a306be65-16e5-b196-07e2-bb1226a004cc@intel.com> (raw)
In-Reply-To: <1599802699-20876-1-git-send-email-phil.yang@arm.com>

On 9/11/2020 6:38 AM, Phil Yang wrote:
> Using 'rte_mb' to synchronize the shared ring head/tail between producer
> and consumer will stall the pipeline and damage performance on the weak
> memory model platforms, such like aarch64.
> 
> Relax the expensive barrier with c11 atomic with explicit memory
> ordering can improve 3.6% performance on throughput.
> 
> Signed-off-by: Phil Yang <phil.yang@arm.com>
> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>

Hi Jakub,

Can you please check/test this patch?

Thanks,
ferruh

  reply	other threads:[~2020-09-18 11:58 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-11  5:38 [dpdk-dev] [PATCH] net/memif: relax barrier for zero copy path Phil Yang
2020-09-18 11:58 ` Ferruh Yigit [this message]
2020-09-18 22:49 ` Honnappa Nagarahalli
2020-09-21  9:03   ` Jakub Grajciar -X (jgrajcia - PANTHEON TECH SRO at Cisco)
2020-09-21 10:22     ` Phil Yang
2020-09-21 12:21       ` Jakub Grajciar -X (jgrajcia - PANTHEON TECH SRO at Cisco)
2020-09-21 13:27         ` Ferruh Yigit
2020-09-21 19:28     ` Honnappa Nagarahalli

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