Hi, Thomas: > -----Original Message----- > From: Thomas Monjalon [mailto:thomas.monja...@6wind.com] > Sent: Friday, December 2, 2016 5:46 PM > To: Yang, Zhiyong <zhiyong.y...@intel.com> > Cc: dev@dpdk.org; yuanhan....@linux.intel.com; Richardson, Bruce > <bruce.richard...@intel.com>; Ananyev, Konstantin > <konstantin.anan...@intel.com> > Subject: Re: [dpdk-dev] [PATCH 4/4] lib/librte_vhost: improve vhost perf > using rte_memset > > 2016-12-05 16:26, Zhiyong Yang: > > +* **Introduced rte_memset and related test on IA platform.** > > + > > + Performance drop had been caused in some cases on Ivybridge when > > + DPDK code calls glibc function memset. It was necessary to introduce > more high efficient function to fix it. > > + The function rte_memset supported three types of instruction sets > > + including sse & avx(128 bits), > > + avx2(256 bits) and avx512(512bits). > > + > > + * Added rte_memset support on IA platform. > > + * Added functional autotest support for rte_memset. > > + * Added performance autotest support for rte_memset. > > No need to reference autotests in the release notes.
Ok. I will remove the two lines. > > > + * Improved performance to use rte_memset instead of > copy_virtio_net_hdr in lib/librte_vhost. > > Please describe this change at a higher level. Which case it is improving? Ok, good comments. * Improved performance to get 3% or so perf improvement on IA platform by using rte_memset when running virtio/vhost non-mergeable loopback test without NIC. Thanks Zhiyong
