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Date: Wed, 13 Sep 2017 15:58:20 +0900
From: Minchan Kim <minchan@...nel.org>
To: Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: Re: [PATCH 1/2] zram: add zstd to the supported algorithms list
On Tue, Sep 12, 2017 at 02:00:04PM +0900, Sergey Senozhatsky wrote:
> Add ZSTD to the list of supported compression algorithms.
>
> ZRAM fio perf test:
>
> LZO DEFLATE ZSTD
>
> #jobs1
> WRITE: (2180MB/s) (77.2MB/s) (1429MB/s)
> WRITE: (1617MB/s) (77.7MB/s) (1202MB/s)
> READ: (426MB/s) (595MB/s) (1181MB/s)
> READ: (422MB/s) (572MB/s) (1020MB/s)
> READ: (318MB/s) (67.8MB/s) (563MB/s)
> WRITE: (318MB/s) (67.9MB/s) (564MB/s)
> READ: (336MB/s) (68.3MB/s) (583MB/s)
> WRITE: (335MB/s) (68.2MB/s) (582MB/s)
> #jobs2
> WRITE: (3441MB/s) (152MB/s) (2141MB/s)
> WRITE: (2507MB/s) (147MB/s) (1888MB/s)
> READ: (801MB/s) (1146MB/s) (1890MB/s)
> READ: (767MB/s) (1096MB/s) (2073MB/s)
> READ: (621MB/s) (126MB/s) (1009MB/s)
> WRITE: (621MB/s) (126MB/s) (1009MB/s)
> READ: (656MB/s) (125MB/s) (1075MB/s)
> WRITE: (657MB/s) (126MB/s) (1077MB/s)
> #jobs3
> WRITE: (4772MB/s) (225MB/s) (3394MB/s)
> WRITE: (3905MB/s) (211MB/s) (2939MB/s)
> READ: (1216MB/s) (1608MB/s) (3218MB/s)
> READ: (1159MB/s) (1431MB/s) (2981MB/s)
> READ: (906MB/s) (156MB/s) (1457MB/s)
> WRITE: (907MB/s) (156MB/s) (1458MB/s)
> READ: (953MB/s) (158MB/s) (1595MB/s)
> WRITE: (952MB/s) (157MB/s) (1593MB/s)
> #jobs4
> WRITE: (6036MB/s) (265MB/s) (4469MB/s)
> WRITE: (5059MB/s) (263MB/s) (3951MB/s)
> READ: (1618MB/s) (2066MB/s) (4276MB/s)
> READ: (1573MB/s) (1942MB/s) (3830MB/s)
> READ: (1202MB/s) (227MB/s) (1971MB/s)
> WRITE: (1200MB/s) (227MB/s) (1968MB/s)
> READ: (1265MB/s) (226MB/s) (2116MB/s)
> WRITE: (1264MB/s) (226MB/s) (2114MB/s)
> #jobs5
> WRITE: (5339MB/s) (233MB/s) (3781MB/s)
> WRITE: (4298MB/s) (234MB/s) (3276MB/s)
> READ: (1626MB/s) (2048MB/s) (4081MB/s)
> READ: (1567MB/s) (1929MB/s) (3758MB/s)
> READ: (1174MB/s) (205MB/s) (1747MB/s)
> WRITE: (1173MB/s) (204MB/s) (1746MB/s)
> READ: (1214MB/s) (208MB/s) (1890MB/s)
> WRITE: (1215MB/s) (208MB/s) (1892MB/s)
> #jobs6
> WRITE: (5666MB/s) (270MB/s) (4338MB/s)
> WRITE: (4828MB/s) (267MB/s) (3772MB/s)
> READ: (1803MB/s) (2058MB/s) (4946MB/s)
> READ: (1805MB/s) (2156MB/s) (4711MB/s)
> READ: (1334MB/s) (235MB/s) (2135MB/s)
> WRITE: (1335MB/s) (235MB/s) (2137MB/s)
> READ: (1364MB/s) (236MB/s) (2268MB/s)
> WRITE: (1365MB/s) (237MB/s) (2270MB/s)
> #jobs7
> WRITE: (5474MB/s) (270MB/s) (4300MB/s)
> WRITE: (4666MB/s) (266MB/s) (3817MB/s)
> READ: (2022MB/s) (2319MB/s) (5472MB/s)
> READ: (1924MB/s) (2260MB/s) (5031MB/s)
> READ: (1369MB/s) (242MB/s) (2153MB/s)
> WRITE: (1370MB/s) (242MB/s) (2155MB/s)
> READ: (1499MB/s) (246MB/s) (2310MB/s)
> WRITE: (1497MB/s) (246MB/s) (2307MB/s)
> #jobs8
> WRITE: (5558MB/s) (273MB/s) (4439MB/s)
> WRITE: (4763MB/s) (271MB/s) (3918MB/s)
> READ: (2201MB/s) (2599MB/s) (6062MB/s)
> READ: (2105MB/s) (2463MB/s) (5413MB/s)
> READ: (1490MB/s) (252MB/s) (2238MB/s)
> WRITE: (1488MB/s) (252MB/s) (2236MB/s)
> READ: (1566MB/s) (254MB/s) (2434MB/s)
> WRITE: (1568MB/s) (254MB/s) (2437MB/s)
> #jobs9
> WRITE: (5120MB/s) (264MB/s) (4035MB/s)
> WRITE: (4531MB/s) (267MB/s) (3740MB/s)
> READ: (1940MB/s) (2258MB/s) (4986MB/s)
> READ: (2024MB/s) (2387MB/s) (4871MB/s)
> READ: (1343MB/s) (246MB/s) (2038MB/s)
> WRITE: (1342MB/s) (246MB/s) (2037MB/s)
> READ: (1553MB/s) (238MB/s) (2243MB/s)
> WRITE: (1552MB/s) (238MB/s) (2242MB/s)
> #jobs10
> WRITE: (5345MB/s) (271MB/s) (3988MB/s)
> WRITE: (4750MB/s) (254MB/s) (3668MB/s)
> READ: (1876MB/s) (2363MB/s) (5150MB/s)
> READ: (1990MB/s) (2256MB/s) (5080MB/s)
> READ: (1355MB/s) (250MB/s) (2019MB/s)
> WRITE: (1356MB/s) (251MB/s) (2020MB/s)
> READ: (1490MB/s) (252MB/s) (2202MB/s)
> WRITE: (1488MB/s) (252MB/s) (2199MB/s)
>
> jobs1 perfstat
> instructions 52,065,555,710 ( 0.79) 855,731,114,587 ( 2.64) 54,280,709,944 ( 1.40)
> branches 14,020,427,116 ( 725.847) 101,733,449,582 (1074.521) 11,170,591,067 ( 992.869)
> branch-misses 22,626,174 ( 0.16%) 274,197,885 ( 0.27%) 25,915,805 ( 0.23%)
> jobs2 perfstat
> instructions 103,633,110,402 ( 0.75) 1,710,822,100,914 ( 2.59) 107,879,874,104 ( 1.28)
> branches 27,931,237,282 ( 679.203) 203,298,267,479 (1037.326) 22,185,350,842 ( 884.427)
> branch-misses 46,103,811 ( 0.17%) 533,747,204 ( 0.26%) 49,682,483 ( 0.22%)
> jobs3 perfstat
> instructions 154,857,283,657 ( 0.76) 2,565,748,974,197 ( 2.57) 161,515,435,813 ( 1.31)
> branches 41,759,490,355 ( 670.529) 304,905,605,277 ( 978.765) 33,215,805,907 ( 888.003)
> branch-misses 74,263,293 ( 0.18%) 759,746,240 ( 0.25%) 76,841,196 ( 0.23%)
> jobs4 perfstat
> instructions 206,215,849,076 ( 0.75) 3,420,169,460,897 ( 2.60) 215,003,061,664 ( 1.31)
> branches 55,632,141,739 ( 666.501) 406,394,977,433 ( 927.241) 44,214,322,251 ( 883.532)
> branch-misses 102,287,788 ( 0.18%) 1,098,617,314 ( 0.27%) 103,891,040 ( 0.23%)
> jobs5 perfstat
> instructions 258,711,315,588 ( 0.67) 4,275,657,533,244 ( 2.23) 269,332,235,685 ( 1.08)
> branches 69,802,821,166 ( 588.823) 507,996,211,252 ( 797.036) 55,450,846,129 ( 735.095)
> branch-misses 129,217,214 ( 0.19%) 1,243,284,991 ( 0.24%) 173,512,278 ( 0.31%)
> jobs6 perfstat
> instructions 312,796,166,008 ( 0.61) 5,133,896,344,660 ( 2.02) 323,658,769,588 ( 1.04)
> branches 84,372,488,583 ( 520.541) 610,310,494,402 ( 697.642) 66,683,292,992 ( 693.939)
> branch-misses 159,438,978 ( 0.19%) 1,396,368,563 ( 0.23%) 174,406,934 ( 0.26%)
> jobs7 perfstat
> instructions 363,211,372,930 ( 0.56) 5,988,205,600,879 ( 1.75) 377,824,674,156 ( 0.93)
> branches 98,057,013,765 ( 463.117) 711,841,255,974 ( 598.762) 77,879,009,954 ( 600.443)
> branch-misses 199,513,153 ( 0.20%) 1,507,651,077 ( 0.21%) 248,203,369 ( 0.32%)
> jobs8 perfstat
> instructions 413,960,354,615 ( 0.52) 6,842,918,558,378 ( 1.45) 431,938,486,581 ( 0.83)
> branches 111,812,574,884 ( 414.224) 813,299,084,518 ( 491.173) 89,062,699,827 ( 517.795)
> branch-misses 233,584,845 ( 0.21%) 1,531,593,921 ( 0.19%) 286,818,489 ( 0.32%)
> jobs9 perfstat
> instructions 465,976,220,300 ( 0.53) 7,698,467,237,372 ( 1.47) 486,352,600,321 ( 0.84)
> branches 125,931,456,162 ( 424.063) 915,207,005,715 ( 498.192) 100,370,404,090 ( 517.439)
> branch-misses 256,992,445 ( 0.20%) 1,782,809,816 ( 0.19%) 345,239,380 ( 0.34%)
> jobs10 perfstat
> instructions 517,406,372,715 ( 0.53) 8,553,527,312,900 ( 1.48) 540,732,653,094 ( 0.84)
> branches 139,839,780,676 ( 427.732) 1,016,737,699,389 ( 503.172) 111,696,557,638 ( 516.750)
> branch-misses 259,595,561 ( 0.19%) 1,952,570,279 ( 0.19%) 357,818,661 ( 0.32%)
>
> seconds elapsed 20.630411534 96.084546565 12.743373571
> seconds elapsed 22.292627625 100.984155001 14.407413560
> seconds elapsed 22.396016966 110.344880848 14.032201392
> seconds elapsed 22.517330949 113.351459170 14.243074935
> seconds elapsed 28.548305104 156.515193765 19.159286861
> seconds elapsed 30.453538116 164.559937678 19.362492717
> seconds elapsed 33.467108086 188.486827481 21.492612173
> seconds elapsed 35.617727591 209.602677783 23.256422492
> seconds elapsed 42.584239509 243.959902566 28.458540338
> seconds elapsed 47.683632526 269.635248851 31.542404137
>
> Over all, ZSTD has slower WRITE, but much faster READ (perhaps
> a static compression buffer used during the test helped ZSTD a
> lot), which results in faster test results.
>
> Memory consumption (zram mm_stat file):
>
> zram LZO mm_stat
> mm_stat (jobs1): 2147483648 23068672 33558528 0 33558528 0 0
> mm_stat (jobs2): 2147483648 23068672 33558528 0 33558528 0 0
> mm_stat (jobs3): 2147483648 23068672 33558528 0 33562624 0 0
> mm_stat (jobs4): 2147483648 23068672 33558528 0 33558528 0 0
> mm_stat (jobs5): 2147483648 23068672 33558528 0 33558528 0 0
> mm_stat (jobs6): 2147483648 23068672 33558528 0 33562624 0 0
> mm_stat (jobs7): 2147483648 23068672 33558528 0 33566720 0 0
> mm_stat (jobs8): 2147483648 23068672 33558528 0 33558528 0 0
> mm_stat (jobs9): 2147483648 23068672 33558528 0 33558528 0 0
> mm_stat (jobs10): 2147483648 23068672 33558528 0 33562624 0 0
>
> zram DEFLATE mm_stat
> mm_stat (jobs1): 2147483648 16252928 25178112 0 25178112 0 0
> mm_stat (jobs2): 2147483648 16252928 25178112 0 25178112 0 0
> mm_stat (jobs3): 2147483648 16252928 25178112 0 25178112 0 0
> mm_stat (jobs4): 2147483648 16252928 25178112 0 25178112 0 0
> mm_stat (jobs5): 2147483648 16252928 25178112 0 25178112 0 0
> mm_stat (jobs6): 2147483648 16252928 25178112 0 25178112 0 0
> mm_stat (jobs7): 2147483648 16252928 25178112 0 25190400 0 0
> mm_stat (jobs8): 2147483648 16252928 25178112 0 25190400 0 0
> mm_stat (jobs9): 2147483648 16252928 25178112 0 25178112 0 0
> mm_stat (jobs10): 2147483648 16252928 25178112 0 25178112 0 0
>
> zram ZSTD mm_stat
> mm_stat (jobs1): 2147483648 11010048 16781312 0 16781312 0 0
> mm_stat (jobs2): 2147483648 11010048 16781312 0 16781312 0 0
> mm_stat (jobs3): 2147483648 11010048 16781312 0 16785408 0 0
> mm_stat (jobs4): 2147483648 11010048 16781312 0 16781312 0 0
> mm_stat (jobs5): 2147483648 11010048 16781312 0 16781312 0 0
> mm_stat (jobs6): 2147483648 11010048 16781312 0 16781312 0 0
> mm_stat (jobs7): 2147483648 11010048 16781312 0 16781312 0 0
> mm_stat (jobs8): 2147483648 11010048 16781312 0 16781312 0 0
> mm_stat (jobs9): 2147483648 11010048 16781312 0 16785408 0 0
> mm_stat (jobs10): 2147483648 11010048 16781312 0 16781312 0 0
>
> ==================================================================================
>
> Official benchmarks [1]:
>
> Compressor name Ratio Compression Decompress.
> zstd 1.1.3 -1 2.877 430 MB/s 1110 MB/s
> zlib 1.2.8 -1 2.743 110 MB/s 400 MB/s
> brotli 0.5.2 -0 2.708 400 MB/s 430 MB/s
> quicklz 1.5.0 -1 2.238 550 MB/s 710 MB/s
> lzo1x 2.09 -1 2.108 650 MB/s 830 MB/s
> lz4 1.7.5 2.101 720 MB/s 3600 MB/s
> snappy 1.1.3 2.091 500 MB/s 1650 MB/s
> lzf 3.6 -1 2.077 400 MB/s 860 MB/s
>
> [1] https://github.com/facebook/zstd
>
> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Acked-by: Minchan Kim <minchan@...nel.org>
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