Takashi Nakamura tanakamura

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tanakamura / cfl.txt

Last active December 13, 2020 17:21

	ostimer: clock_gettime
	userland_timer: rdtscp
	perf_counter: yes
	Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
	==== membw_1t ====
	\| \|MiB/sec
	=================================
	\| simple-long-copy \|14401.82962
	---------------------------------
	\| libc-memcpy \|18055.36681

tanakamura / znver2-amdmemcpy.txt

Created December 12, 2020 14:12

	ostimer: clock_gettime
	userland_timer: rdtscp
	use_cpucyle: no
	==== membw_1t ====
	\| \|MiB/sec
	=================================
	\| simple-long-copy \|16795.94556
	---------------------------------
	\| libc-memcpy \|32935.04326
	---------------------------------

tanakamura / tgl.txt

Created December 12, 2020 13:21

membw-release

	ostimer: clock_gettime
	userland_timer: rdtscp
	use_cpucyle: no
	==== membw_1t ====
	\| \|MiB/sec
	=================================
	\| simple-long-copy \|23061.14028
	---------------------------------
	\| libc-memcpy \|30647.25286
	---------------------------------

tanakamura / tgl.txt

Created December 11, 2020 17:43

membw

	ostimer: clock_gettime
	userland_timer: rdtscp
	use_cpucyle: no
	==== membw_1t ====
	\| \|MiB/sec
	=================================
	\| simple-long-copy \| 8626.01679
	---------------------------------
	\| libc-memcpy \|16827.83568
	---------------------------------

tanakamura / cfl-syscall-mitigationsoff.txt

Created December 6, 2020 18:41

syscall-mitigations=off

	==== syscall ====
	\| \| MCall/sec
	================================
	\| close_minus1 \| 9.58463
	--------------------------------
	\| open_close \| 1.10591
	--------------------------------
	\| pipe_close \| 0.57343
	--------------------------------
	\| select_0 \| 2.15039

tanakamura / cfl-syscall.txt

Last active December 6, 2020 18:44

syscall

	==== syscall ====
	\| \| MCall/sec
	================================
	\| close_minus1 \| 3.78879
	--------------------------------
	\| open_close \| 0.77823
	--------------------------------
	\| pipe_close \| 0.43007
	--------------------------------
	\| select_0 \| 1.45407

tanakamura / cfl-32.txt

Created December 6, 2020 15:48

int-div-latency

	-> : divider_bit
	\| \|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|29\|30\|31\|32
	====================================================================================================
	\| 0 \|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25\|25
	----------------------------------------------------------------------------------------------------
	\| 1 \|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27
	----------------------------------------------------------------------------------------------------
	\| 2 \|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27
	----------------------------------------------------------------------------------------------------
	\| 3 \|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27\|27

tanakamura / pipe.c

Created November 18, 2019 08:22

	#include <unistd.h>
	#include <fcntl.h>
	#include <pthread.h>
	#include <stdio.h>

	static double getsec()
	{
	struct timespec ts;

	clock_gettime(CLOCK_MONOTONIC, &ts);

tanakamura / memset2-ryzen3700x.txt

Created July 12, 2019 17:52

	num_thread = 1
	libc-memset : 1024[ B] 109.797060[GB/s]
	libc-memset : 2048[ B] 119.469974[GB/s]
	libc-memset : 4096[ B] 124.585380[GB/s]
	libc-memset : 8192[ B] 127.374256[GB/s]
	libc-memset : 16[KB] 126.546911[GB/s]
	libc-memset : 32[KB] 125.730241[GB/s]
	libc-memset : 64[KB] 120.244104[GB/s]
	libc-memset : 128[KB] 118.669685[GB/s]
	libc-memset : 256[KB] 112.864779[GB/s]

tanakamura / znver2_skl.txt

Last active July 13, 2019 10:45

	Ryzen 7 3700x vs i7-6700

	============= LATENCY ==============================================================================
	instruction \| IPC ( rel[%]), CPI ( rel[%])
	------------------------------------------+---------------------------------------------------------
	m128 addps \| 0.33-0.25 ( 33.3[%]), 3.00-4.00 ( -25.0[%])
	m128 aesdec \| 0.25-0.25 ( 0.0[%]), 4.00-4.00 ( -0.0[%])
	m128 aesdeclast \| 0.25-0.25 ( -0.0[%]), 4.00-4.00 ( 0.0[%])
	m128 aesenc \| 0.25-0.25 ( 0.0[%]), 4.00-4.00 ( -0.0[%])
	m128 aesenclast \| 0.25-0.25 ( -0.0[%]), 4.00-4.00 ( 0.0[%])