Memory set/cpy/move benchmarks

Hardware

Loongson-3a5000 quad-core machine (2.3GHz)

Software

Arch Linux glibc 2.37-1

Results

• length: byte
• speed: MB/s

Memset

length	src offset	dst offset	speed glibc	speed int	speed lsx	speed lasx
1	0	0	60.652	218.250	218.328	218.318
1	0	8	60.669	218.378	218.388	218.393
1	0	9	60.660	218.398	218.398	218.393
8	0	0	412.594	1746.123	1746.384	1746.685
8	0	8	413.698	1747.126	1747.187	1747.126
8	0	9	286.426	1747.147	1747.187	1747.167
16	0	0	815.275	3505.264	3504.821	3504.941
16	0	8	809.246	3505.828	3505.787	3505.908
16	0	9	565.482	3505.949	3505.908	3505.425
24	0	0	1142.245	5248.999	5249.688	5252.446
24	0	8	1142.343	5253.998	5254.774	5254.774
24	0	9	834.102	5254.861	5254.516	5254.602
32	0	0	1491.729	6371.232	7009.423	7008.387
32	0	8	1491.896	6374.371	7010.688	7010.919
32	0	9	1062.416	7011.840	7011.494	7011.609
64	0	0	3286.221	12529.343	12744.367	14019.305
64	0	8	3291.236	12748.171	10787.323	14023.219
64	0	9	2003.458	14021.377	10787.596	14021.837
300	0	0	10042.752	17299.259	34581.784	50545.663
300	0	8	10029.193	17300.829	32863.175	50556.832
300	0	9	8134.590	17303.184	32873.563	50559.067
1200	0	0	15185.390	17512.956	35007.144	69062.720
1200	0	8	15191.780	17518.770	34578.356	69118.388
1200	0	9	14055.361	17402.775	34581.842	69167.171
4000	0	0	16749.039	17517.661	35035.725	70082.721
4000	0	8	16758.058	17528.534	34918.600	69533.102
4000	0	9	16338.469	17492.344	34917.800	69545.786
8000	0	0	16955.463	17529.143	35062.114	70100.866
8000	0	8	16958.574	17535.087	33818.085	65500.215
8000	0	9	16732.202	17518.474	33818.460	65510.059

Memcpy

length	src offset	dst offset	speed glibc	speed int	speed lsx	speed lasx
1	0	0	50.787	198.487	198.496	218.368
1	0	8	50.791	198.504	198.525	218.393
1	0	9	50.792	198.545	198.547	218.401
8	0	0	335.966	1588.015	1587.981	1746.665
8	0	8	336.007	1588.347	1588.347	1746.986
8	0	9	336.006	1588.214	1588.363	1747.167
16	0	0	604.424	3186.477	3185.778	3505.264
16	0	8	604.483	3187.109	3186.910	3395.453
16	0	9	501.050	3187.076	3187.143	3505.908
24	0	0	921.829	4775.122	4775.407	5252.618
24	0	8	921.919	4776.761	4776.904	5254.774
24	0	9	740.110	4777.118	4776.262	5254.429
32	0	0	1230.012	5006.977	6368.952	7006.317
32	0	8	1230.168	5008.151	6373.991	7011.840
32	0	9	973.859	5393.117	6374.371	7011.494
64	0	0	2298.826	9692.430	10010.667	14011.715
64	0	8	2299.030	10016.773	10786.097	14023.679
64	0	9	1775.169	10780.514	10787.323	14022.989
300	0	0	6993.178	17296.382	33410.239	43794.503
300	0	8	6994.076	17299.782	27354.678	43826.380
300	0	9	4792.205	15654.720	27226.427	43821.344
1200	0	0	13004.986	17505.805	34531.360	62460.166
1200	0	8	13011.152	17520.112	27758.670	40400.471
1200	0	9	7964.797	15552.029	27874.848	38513.362
4000	0	0	15873.016	17497.562	34893.831	69902.824
4000	0	8	15877.974	17508.209	27894.130	41599.607
4000	0	9	9148.500	15568.055	27947.806	41288.751
8000	0	0	16487.970	17288.862	35015.034	69796.170
8000	0	8	16489.396	17273.201	27385.088	40232.083
8000	0	9	9566.662	15539.054	27469.658	39854.741

Memmove

length	src offset	dst offset	speed glibc	speed int	speed lsx	speed lasx
1	0	0	50.781	198.427	198.496	198.475
1	0	8	50.366	198.539	198.537	198.539
1	0	9	50.793	198.545	198.543	198.550
8	0	0	317.657	1587.981	1587.899	1587.617
8	0	8	317.681	1588.347	1588.347	1588.297
8	0	9	317.684	1588.380	1588.330	1588.347
16	0	0	594.187	3186.344	3186.177	3186.277
16	0	8	594.237	3187.076	3186.976	3187.076
16	0	9	547.918	3187.176	3186.743	3187.176
24	0	0	905.941	4774.267	4774.837	4773.056
24	0	8	905.995	4776.975	4776.761	4776.832
24	0	9	808.430	4777.118	4777.189	4777.118
32	0	0	1208.741	5838.917	6371.708	6370.852
32	0	8	1199.415	5842.912	6373.895	6373.991
32	0	9	1062.398	5843.232	6374.561	6374.276
64	0	0	2261.671	10782.692	11681.987	12738.854
64	0	8	2262.755	10787.050	10387.399	12747.981
64	0	9	1921.096	10787.187	10388.031	12748.933
300	0	0	7144.508	17294.813	30746.902	41055.087
300	0	8	7146.784	17301.614	18116.458	24348.196
300	0	9	5156.684	14442.439	18205.255	24350.788
1200	0	0	13200.939	17400.127	34204.228	64796.448
1200	0	8	13207.293	17394.391	27862.394	34663.972
1200	0	9	9079.118	15550.266	27354.653	35237.313
4000	0	0	15929.555	17487.329	34897.025	67804.900
4000	0	8	15935.381	17494.350	27885.459	39349.761
4000	0	9	10528.569	15567.579	28001.689	39559.014
8000	0	0	16539.723	17306.809	34986.927	69540.046
8000	0	8	16542.682	17309.263	27077.398	40638.819
8000	0	9	11077.144	15536.126	26990.207	40417.555

Memory libraries

Build

make lib

Install

# Int
cp libmem-int.so /usr/local/lib/
echo '/usr/local/lib/libmem-int.so' > /etc/ld.so.preload

# LSX
sudo cp libmem-lsx.so /usr/local/lib/
echo '/usr/local/lib/libmem-lsx.so' > /etc/ld.so.preload

# LASX
sudo cp libmem-lasx.so /usr/local/lib/
echo '/usr/local/lib/libmem-lasx.so' > /etc/ld.so.preload