From: Stephen Hemminger <stephen@networkplumber.org>
To: Zhihong Wang <zhihong.wang@intel.com>
Cc: dev@dpdk.org
Subject: Re: [PATCH v2 0/5] Optimize memcpy for AVX512 platforms
Date: Mon, 18 Jan 2016 12:06:29 -0800 [thread overview]
Message-ID: <20160118120629.5ed7bcd9@xeon-e3> (raw)
In-Reply-To: <1453086314-30158-1-git-send-email-zhihong.wang@intel.com>
On Sun, 17 Jan 2016 22:05:09 -0500
Zhihong Wang <zhihong.wang@intel.com> wrote:
> This patch set optimizes DPDK memcpy for AVX512 platforms, to make full
> utilization of hardware resources and deliver high performance.
>
> In current DPDK, memcpy holds a large proportion of execution time in
> libs like Vhost, especially for large packets, and this patch can bring
> considerable benefits.
>
> The implementation is based on the current DPDK memcpy framework, some
> background introduction can be found in these threads:
> http://dpdk.org/ml/archives/dev/2014-November/008158.html
> http://dpdk.org/ml/archives/dev/2015-January/011800.html
>
> Code changes are:
>
> 1. Read CPUID to check if AVX512 is supported by CPU
>
> 2. Predefine AVX512 macro if AVX512 is enabled by compiler
>
> 3. Implement AVX512 memcpy and choose the right implementation based on
> predefined macros
>
> 4. Decide alignment unit for memcpy perf test based on predefined macros
Cool, I like it. How much impact does this have on VHOST?
next prev parent reply other threads:[~2016-01-18 20:06 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-14 6:13 [PATCH 0/4] Optimize memcpy for AVX512 platforms Zhihong Wang
2016-01-14 6:13 ` [PATCH 1/4] lib/librte_eal: Identify AVX512 CPU flag Zhihong Wang
2016-01-14 6:13 ` [PATCH 2/4] mk: Predefine AVX512 macro for compiler Zhihong Wang
2016-01-14 6:13 ` [PATCH 3/4] lib/librte_eal: Optimize memcpy for AVX512 platforms Zhihong Wang
2016-01-14 6:13 ` [PATCH 4/4] app/test: Adjust alignment unit for memcpy perf test Zhihong Wang
2016-01-14 16:48 ` [PATCH 0/4] Optimize memcpy for AVX512 platforms Stephen Hemminger
2016-01-15 6:39 ` Wang, Zhihong
2016-01-15 22:03 ` Vincent JARDIN
2016-01-18 3:05 ` [PATCH v2 0/5] " Zhihong Wang
2016-01-18 3:05 ` [PATCH v2 1/5] lib/librte_eal: Identify AVX512 CPU flag Zhihong Wang
2016-01-18 3:05 ` [PATCH v2 2/5] mk: Predefine AVX512 macro for compiler Zhihong Wang
2016-01-18 3:05 ` [PATCH v2 3/5] lib/librte_eal: Optimize memcpy for AVX512 platforms Zhihong Wang
2016-01-18 3:05 ` [PATCH v2 4/5] app/test: Adjust alignment unit for memcpy perf test Zhihong Wang
2016-01-18 3:05 ` [PATCH v2 5/5] lib/librte_eal: Tune memcpy for prior platforms Zhihong Wang
2016-01-18 20:06 ` Stephen Hemminger [this message]
2016-01-19 2:37 ` [PATCH v2 0/5] Optimize memcpy for AVX512 platforms Wang, Zhihong
2016-01-27 15:23 ` Thomas Monjalon
2016-01-28 6:09 ` Wang, Zhihong
2016-01-27 15:30 ` Thomas Monjalon
2016-01-27 18:48 ` Ananyev, Konstantin
2016-01-27 20:18 ` Thomas Monjalon
2017-08-30 9:37 ` linhaifeng
2017-09-18 5:10 ` Wang, Zhihong
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