From: "Zhang, Qi Z" <qi.z.zhang@intel.com>
To: "Rong, Leyi" <leyi.rong@intel.com>, "Lu, Wenzhuo" <wenzhuo.lu@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] net/ice: enlarge ice RXQ rearm thresh to 64
Date: Tue, 12 Jan 2021 05:11:59 +0000 [thread overview]
Message-ID: <7190e3e99b3942c1b2858fee5f9d31ee@intel.com> (raw)
In-Reply-To: <20210106053548.67341-1-leyi.rong@intel.com>
> -----Original Message-----
> From: Rong, Leyi <leyi.rong@intel.com>
> Sent: Wednesday, January 6, 2021 1:36 PM
> To: Zhang, Qi Z <qi.z.zhang@intel.com>; Lu, Wenzhuo <wenzhuo.lu@intel.com>
> Cc: dev@dpdk.org; Rong, Leyi <leyi.rong@intel.com>
> Subject: [PATCH] net/ice: enlarge ice RXQ rearm thresh to 64
>
> We observe performance drop on ice AVX512 data path after stop and start by
> using testpmd.
>
> As CPU polling is faster in AVX512 path, L3 contested accesses is intensified
> when rxrearm_start is a random value after testpmd stop/start.
>
> Enlarge ICE_RXQ_REARM_THRESH to 64 to ease the contested asscesses and fix
> the performance drop issue.
>
> Signed-off-by: Leyi Rong <leyi.rong@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Applied to dpdk-next-net-intel after add cc:stable tag.
Thanks
Qi
prev parent reply other threads:[~2021-01-12 5:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-06 5:35 [dpdk-dev] [PATCH] net/ice: enlarge ice RXQ rearm thresh to 64 Leyi Rong
2021-01-12 5:11 ` Zhang, Qi Z [this message]
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