Basic Information
Patch name DPDK memcpy optimization v2
Brief description about test purpose Verify memory copy and memory
copy performance cases on variety OS
Test Flag Tested-by
Tester name jingguox.fu at intel.com
Test Tool Chain information N/A
Commit ID 88fa98a60b34812bfed92e5b2706fcf7e1cbcbc8
Test Result Summary Total 6 cases, 6 passed, 0 failed
Test environment
- Environment 1:
OS: Ubuntu12.04 3.2.0-23-generic X86_64
GCC: gcc version 4.6.3
CPU: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz
NIC: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ [8086:10fb] (rev
01)
- Environment 2:
OS: Ubuntu14.04 3.13.0-24-generic
GCC: gcc version 4.8.2
CPU: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz
NIC: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ [8086:10fb] (rev
01)
Environment 3:
OS: Fedora18 3.6.10-4.fc18.x86_64
GCC: gcc version 4.7.2 20121109
CPU: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz
NIC: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ [8086:10fb] (rev
01)
Detailed Testing information
Test Case - name test_memcpy
Test Case - Description
Create two buffers, and initialise one with random values.
These are copied
to the second buffer and then compared to see if the copy was
successful. The
bytes outside the copied area are also checked to make sure
they were not changed.
Test Case -test sample/application
test application in app/test
Test Case -command / instruction
# ./app/test/test -n 1 -c ffff
#RTE>> memcpy_autotest
Test Case - expected
#RTE>> Test OK
Test Result- PASSED
Test Case - name test_memcpy_perf
Test Case - Description
a number of different sizes and cached/uncached permutations
Test Case -test sample/application
test application in app/test
Test Case -command / instruction
# ./app/test/test -n 1 -c ffff
#RTE>> memcpy_perf_autotest
Test Case - expected
#RTE>> Test OK
Test Result- PASSED
-----Original Message-----
From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Zhihong Wang
Sent: Thursday, January 29, 2015 10:39
To: dev at dpdk.org
Subject: [dpdk-dev] [PATCH v2 0/4] DPDK memcpy optimization
This patch set optimizes memcpy for DPDK for both SSE and AVX platforms.
It also extends memcpy test coverage with unaligned cases and more test points.
Optimization techniques are summarized below:
1. Utilize full cache bandwidth
2. Enforce aligned stores
3. Apply load address alignment based on architecture features
4. Make load/store address available as early as possible
5. General optimization techniques like inlining, branch reducing, prefetch
pattern access
--------------
Changes in v2:
1. Reduced constant test cases in app/test/test_memcpy_perf.c for fast build
2. Modified macro definition for better code readability & safety
Zhihong Wang (4):
app/test: Disabled VTA for memcpy test in app/test/Makefile
app/test: Removed unnecessary test cases in app/test/test_memcpy.c
app/test: Extended test coverage in app/test/test_memcpy_perf.c
lib/librte_eal: Optimized memcpy in arch/x86/rte_memcpy.h for both SSE
and AVX platforms
app/test/Makefile | 6 +
app/test/test_memcpy.c | 52 +-
app/test/test_memcpy_perf.c | 220 ++++---
.../common/include/arch/x86/rte_memcpy.h | 680 +++++++++++++++------
4 files changed, 654 insertions(+), 304 deletions(-)
--
1.9.3
