> Hi Zhihong Wang
>
> I test avx512 rte_memcpy found the performanc for ovs dpdk is lower than
> avx2 rte_memcpy.
Hi Haifeng,
AVX512 memcpy is marked as experimental and disabled by default, its
benefit varies from case to case. So enable it only when the case
(SW + HW setup with expected data p
在 2016/1/18 11:05, Zhihong Wang 写道:
> 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,
> -Original Message-
> From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com]
> Sent: Wednesday, January 27, 2016 11:24 PM
> To: Wang, Zhihong
> Cc: dev at dpdk.org; Ravi Kerur
> Subject: Re: [dpdk-dev] [PATCH v2 0/5] Optimize memcpy for AVX512 platforms
>
2016-01-27 18:48, Ananyev, Konstantin:
> From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com]
> >
> > > Zhihong Wang (5):
> > > lib/librte_eal: Identify AVX512 CPU flag
> > > mk: Predefine AVX512 macro for compiler
> > > lib/librte_eal: Optimize memcpy for AVX512 platforms
> > > app
Hi Thomas,
> -Original Message-
> From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com]
> Sent: Wednesday, January 27, 2016 3:31 PM
> To: Richardson, Bruce; Ananyev, Konstantin
> Cc: dev at dpdk.org; Wang, Zhihong
> Subject: Re: [dpdk-dev] [PATCH v2 0/5] Optimize
> Zhihong Wang (5):
> lib/librte_eal: Identify AVX512 CPU flag
> mk: Predefine AVX512 macro for compiler
> lib/librte_eal: Optimize memcpy for AVX512 platforms
> app/test: Adjust alignment unit for memcpy perf test
> lib/librte_eal: Tune memcpy for prior platforms
>
> app/test/test_memc
2016-01-17 22:05, Zhihong Wang:
> This patch set optimizes DPDK memcpy for AVX512 platforms, to make full
> utilization of hardware resources and deliver high performance.
On a related note, your expertise would be very valuable to review
these patches please:
(memcpy) http://dpdk.org/dev/patchwor
> -Original Message-
> From: Stephen Hemminger [mailto:stephen at networkplumber.org]
> Sent: Tuesday, January 19, 2016 4:06 AM
> To: Wang, Zhihong
> Cc: dev at dpdk.org; Ananyev, Konstantin ;
> Richardson, Bruce ; Xie, Huawei
>
> Subject: Re: [PATCH v2 0/5] Optimize memcpy for AVX512 pla
On Sun, 17 Jan 2016 22:05:09 -0500
Zhihong Wang 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, especial
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 benefit
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