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* [dpdk-dev] [PATCH 0/4] eal/common: introduce rte_memset and related test
@ 2016-12-05  8:26 Zhiyong Yang
  2016-12-02 10:00 ` Maxime Coquelin
                   ` (4 more replies)
  0 siblings, 5 replies; 44+ messages in thread
From: Zhiyong Yang @ 2016-12-05  8:26 UTC (permalink / raw)
  To: dev; +Cc: yuanhan.liu, bruce.richardson, konstantin.ananyev

DPDK code has met performance drop badly in some case when calling glibc
function memset. Reference to discussions about memset in 
http://dpdk.org/ml/archives/dev/2016-October/048628.html
It is necessary to introduce more high efficient function to fix it.
One important thing about rte_memset is that we can get clear control
on what instruction flow is used.

This patchset introduces rte_memset to bring more high efficient
implementation, and will bring obvious perf improvement, especially
for small N bytes in the most application scenarios.

Patch 1 implements rte_memset in the file rte_memset.h on IA platform
The file supports three types of instruction sets including sse & avx
(128bits), avx2(256bits) and avx512(512bits). rte_memset makes use of
vectorization and inline function to improve the perf on IA. In addition,
cache line and memory alignment are fully taken into consideration.

Patch 2 implements functional autotest to validates the function whether
to work in a right way.

Patch 3 implements performance autotest separately in cache and memory.

Patch 4 Using rte_memset instead of copy_virtio_net_hdr can bring 3%~4%
performance improvements on IA platform from virtio/vhost non-mergeable
loopback testing.

Zhiyong Yang (4):
  eal/common: introduce rte_memset on IA platform
  app/test: add functional autotest for rte_memset
  app/test: add performance autotest for rte_memset
  lib/librte_vhost: improve vhost perf using rte_memset

 app/test/Makefile                                  |   3 +
 app/test/test_memset.c                             | 158 +++++++++
 app/test/test_memset_perf.c                        | 348 +++++++++++++++++++
 doc/guides/rel_notes/release_17_02.rst             |  11 +
 .../common/include/arch/x86/rte_memset.h           | 376 +++++++++++++++++++++
 lib/librte_eal/common/include/generic/rte_memset.h |  51 +++
 lib/librte_vhost/virtio_net.c                      |  18 +-
 7 files changed, 958 insertions(+), 7 deletions(-)
 create mode 100644 app/test/test_memset.c
 create mode 100644 app/test/test_memset_perf.c
 create mode 100644 lib/librte_eal/common/include/arch/x86/rte_memset.h
 create mode 100644 lib/librte_eal/common/include/generic/rte_memset.h

-- 
2.7.4

^ permalink raw reply	[flat|nested] 44+ messages in thread

end of thread, other threads:[~2017-01-19  1:36 UTC | newest]

Thread overview: 44+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-12-05  8:26 [dpdk-dev] [PATCH 0/4] eal/common: introduce rte_memset and related test Zhiyong Yang
2016-12-02 10:00 ` Maxime Coquelin
2016-12-06  6:33   ` Yang, Zhiyong
2016-12-06  8:29     ` Maxime Coquelin
2016-12-07  9:28       ` Yang, Zhiyong
2016-12-07  9:37         ` Yuanhan Liu
2016-12-07  9:43           ` Yang, Zhiyong
2016-12-07  9:48             ` Yuanhan Liu
2016-12-05  8:26 ` [dpdk-dev] [PATCH 1/4] eal/common: introduce rte_memset on IA platform Zhiyong Yang
2016-12-02 10:25   ` Thomas Monjalon
2016-12-08  7:41     ` Yang, Zhiyong
2016-12-08  9:26       ` Ananyev, Konstantin
2016-12-08  9:53         ` Yang, Zhiyong
2016-12-08 10:27           ` Bruce Richardson
2016-12-08 10:30           ` Ananyev, Konstantin
2016-12-11 12:32             ` Yang, Zhiyong
2016-12-15  6:51               ` Yang, Zhiyong
2016-12-15 10:12                 ` Bruce Richardson
2016-12-16 10:19                   ` Yang, Zhiyong
2016-12-19  6:27                     ` Yuanhan Liu
2016-12-20  2:41                       ` Yao, Lei A
2016-12-15 10:53                 ` Ananyev, Konstantin
2016-12-16  2:15                   ` Yang, Zhiyong
2016-12-16 11:47                     ` Ananyev, Konstantin
2016-12-20  9:31                       ` Yang, Zhiyong
2016-12-08 15:09       ` Thomas Monjalon
2016-12-11 12:04         ` Yang, Zhiyong
2016-12-27 10:04   ` [dpdk-dev] [PATCH v2 0/4] eal/common: introduce rte_memset and related test Zhiyong Yang
2016-12-27 10:04     ` [dpdk-dev] [PATCH v2 1/4] eal/common: introduce rte_memset on IA platform Zhiyong Yang
2016-12-27 10:04     ` [dpdk-dev] [PATCH v2 2/4] app/test: add functional autotest for rte_memset Zhiyong Yang
2016-12-27 10:04     ` [dpdk-dev] [PATCH v2 3/4] app/test: add performance " Zhiyong Yang
2016-12-27 10:04     ` [dpdk-dev] [PATCH v2 4/4] lib/librte_vhost: improve vhost perf using rte_memset Zhiyong Yang
2017-01-09  9:48     ` [dpdk-dev] [PATCH v2 0/4] eal/common: introduce rte_memset and related test Yang, Zhiyong
2017-01-17  6:24       ` Yang, Zhiyong
2017-01-17 20:14         ` Thomas Monjalon
2017-01-18  0:15           ` Vincent JARDIN
2017-01-18  2:42           ` Yang, Zhiyong
2017-01-18  7:42             ` Thomas Monjalon
2017-01-19  1:36               ` Yang, Zhiyong
2016-12-05  8:26 ` [dpdk-dev] [PATCH 2/4] app/test: add functional autotest for rte_memset Zhiyong Yang
2016-12-05  8:26 ` [dpdk-dev] [PATCH 3/4] app/test: add performance " Zhiyong Yang
2016-12-05  8:26 ` [dpdk-dev] [PATCH 4/4] lib/librte_vhost: improve vhost perf using rte_memset Zhiyong Yang
2016-12-02  9:46   ` Thomas Monjalon
2016-12-06  8:04     ` Yang, Zhiyong

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