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Date: Sat, 2 Apr 2016 00:38:29 +0900 From: Sergey Senozhatsky <sergey.senozhatsky@...il.com> To: Minchan Kim <minchan@...nel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org, Sergey Senozhatsky <sergey.senozhatsky.work@...il.com> Subject: Re: zram: per-cpu compression streams Hello Minchan, On (03/31/16 15:34), Sergey Senozhatsky wrote: > > I tested with you suggested parameter. > > In my side, win is better compared to my previous test but it seems > > your test is so fast. IOW, filesize is small and loops is just 1. > > Please test filesize=500m loops=10 or 20. fio - loops=10 - buffer_pattern=0xbadc0ffee zram 6G. no intel p-state, deadline IO scheduler, no lockdep (no lock debugging). test 8 streams per-cpu #jobs1 READ: 4118.2MB/s 4105.3MB/s READ: 3487.7MB/s 3624.9MB/s WRITE: 2197.8MB/s 2305.1MB/s WRITE: 1776.2MB/s 1887.5MB/s READ: 736589KB/s 745648KB/s WRITE: 736353KB/s 745409KB/s READ: 679279KB/s 686559KB/s WRITE: 679093KB/s 686371KB/s #jobs2 READ: 6924.6MB/s 7160.2MB/s READ: 6213.2MB/s 6247.1MB/s WRITE: 2510.3MB/s 3680.1MB/s WRITE: 2286.2MB/s 3153.9MB/s READ: 1163.1MB/s 1333.7MB/s WRITE: 1163.4MB/s 1332.2MB/s READ: 1122.9MB/s 1240.3MB/s WRITE: 1121.9MB/s 1239.2MB/s #jobs3 READ: 10304MB/s 10424MB/s READ: 9014.5MB/s 9014.5MB/s WRITE: 3883.9MB/s 5373.8MB/s WRITE: 3549.1MB/s 4576.4MB/s READ: 1704.4MB/s 1916.8MB/s WRITE: 1704.9MB/s 1915.9MB/s READ: 1603.5MB/s 1806.8MB/s WRITE: 1598.8MB/s 1800.8MB/s #jobs4 READ: 13509MB/s 12792MB/s READ: 10899MB/s 11434MB/s WRITE: 4027.2MB/s 6272.8MB/s WRITE: 3902.1MB/s 5389.2MB/s READ: 2090.9MB/s 2344.4MB/s WRITE: 2085.2MB/s 2337.1MB/s READ: 1968.1MB/s 2185.9MB/s WRITE: 1969.5MB/s 2186.4MB/s #jobs5 READ: 12634MB/s 11607MB/s READ: 9932.7MB/s 9980.6MB/s WRITE: 4275.8MB/s 5844.3MB/s WRITE: 4210.1MB/s 5262.3MB/s READ: 1995.6MB/s 2211.4MB/s WRITE: 1988.4MB/s 2203.4MB/s READ: 1930.1MB/s 2191.8MB/s WRITE: 1929.8MB/s 2190.3MB/s #jobs6 READ: 12270MB/s 13012MB/s READ: 11221MB/s 10815MB/s WRITE: 4643.4MB/s 6090.9MB/s WRITE: 4373.6MB/s 5772.8MB/s READ: 2232.6MB/s 2358.4MB/s WRITE: 2233.4MB/s 2359.2MB/s READ: 2082.6MB/s 2285.8MB/s WRITE: 2075.9MB/s 2278.1MB/s #jobs7 READ: 13617MB/s 14172MB/s READ: 12290MB/s 11734MB/s WRITE: 5077.3MB/s 6315.7MB/s WRITE: 4719.4MB/s 5825.1MB/s READ: 2379.8MB/s 2523.7MB/s WRITE: 2373.7MB/s 2516.7MB/s READ: 2287.9MB/s 2362.4MB/s WRITE: 2283.9MB/s 2358.2MB/s #jobs8 READ: 15130MB/s 15533MB/s READ: 12952MB/s 13077MB/s WRITE: 5586.6MB/s 7108.2MB/s WRITE: 5233.5MB/s 6591.3MB/s READ: 2541.2MB/s 2709.2MB/s WRITE: 2544.6MB/s 2713.2MB/s READ: 2450.6MB/s 2590.7MB/s WRITE: 2449.4MB/s 2589.3MB/s #jobs9 READ: 13480MB/s 13909MB/s READ: 12389MB/s 12000MB/s WRITE: 5266.8MB/s 6594.9MB/s WRITE: 4971.6MB/s 6442.2MB/s READ: 2464.9MB/s 2470.9MB/s WRITE: 2482.7MB/s 2488.8MB/s READ: 2171.9MB/s 2402.2MB/s WRITE: 2174.9MB/s 2405.5MB/s #jobs10 READ: 14647MB/s 14667MB/s READ: 11765MB/s 12032MB/s WRITE: 5248.7MB/s 6740.4MB/s WRITE: 4779.8MB/s 5822.8MB/s READ: 2448.8MB/s 2585.3MB/s WRITE: 2449.4MB/s 2585.9MB/s READ: 2290.5MB/s 2409.1MB/s WRITE: 2290.2MB/s 2409.7MB/s -ss
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