liblfds 测试

最新推荐文章于 2020-06-25 21:46:09 发布

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原文链接：http://www.cnblogs.com/jiayy/archive/2013/04/11/3014968.html

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#数据结构与算法

liblfds 是一个灵活的无锁的数据结构库。支持 x86、x64、ARM 上的 Windows 和 Linux 系统。当前该数据结构库包含：列表、队列、ringbuffer、链接列表和堆栈。

使用 liblfds 6.1.1 在一台32 核心的X86机器上测试了一下，这里贴出一部分，从数据看来，核心越多，每核心每秒操作数

反而越低，总体性能曾下降趋势，怪了，顿时影响我对这个库的信心

Benchmark Iteration 01
========================

Release 6.1.1 Freelist Benchmark #1
CPUs,total ops,mean ops/sec per CPU,standard deviation,scalability
1,246081358,24608136,0,1.00
2,199543112,9977156,11895333,0.41
3,89551600,2985053,2899417,0.12
4,72142158,1803554,1736669,0.07
5,63174052,1263481,1231531,0.05
6,56724522,945409,928488,0.04
7,52423462,748907,741945,0.03
8,49750856,621886,622482,0.03
9,33216690,369074,885494,0.01
10,29548254,295483,577371,0.01
11,27488642,249897,349166,0.01
12,27429622,228580,243030,0.01
13,26364156,202801,198908,0.01
14,26559260,189709,198769,0.01
15,25467484,169783,200595,0.01
16,25168734,157305,224077,0.01
17,26750556,157356,224953,0.01
18,26440556,146892,183104,0.01
19,27767700,146146,182785,0.01
20,28852032,144260,179046,0.01
21,30215072,143881,177123,0.01
22,31246522,142030,173322,0.01
23,32409560,140911,168121,0.01
24,33457132,139405,163690,0.01
25,33074418,132298,197168,0.01
26,32506334,125024,224112,0.01
27,31940668,118299,256833,0.00
28,31774470,113480,260138,0.00
29,31559118,108825,259814,0.00
30,31162320,103874,261511,0.00
31,30791554,99328,265175,0.00
32,30343526,94824,270157,0.00

Release 6.1.1 Queue Benchmark #1
CPUs,total ops,mean ops/sec per CPU,standard deviation,scalability
1,77646406,7764641,0,1.00
2,66672016,3333601,3548060,0.43
3,50812638,1693755,1474220,0.22
4,57219558,1430489,1308237,0.18
5,57723612,1154472,1082222,0.15
6,56615766,943596,895511,0.12
7,53761898,768027,737010,0.10
8,52140530,651757,632714,0.08
9,23796974,264411,422512,0.03
10,20895830,208958,409337,0.03
11,20253188,184120,321570,0.02
12,19833992,165283,227924,0.02
13,19149290,147302,160678,0.02
14,18602130,132872,133459,0.02
15,17924544,119497,133588,0.02
16,17623768,110149,147579,0.01
17,17453130,102665,133979,0.01
18,17135614,95198,112838,0.01
19,17031684,89640,102983,0.01
20,16904596,84523,93208,0.01
21,16865270,80311,87486,0.01
22,16764744,76203,82259,0.01
23,16669194,72475,78501,0.01
24,16607532,69198,75868,0.01
25,16408878,65636,80149,0.01
26,16213512,62360,84749,0.01
27,16021986,59341,87562,0.01
28,15915004,56839,86468,0.01
29,15780098,54414,88629,0.01
30,15660432,52201,90686,0.01
31,15488272,49962,94192,0.01
32,15325536,47892,97841,0.01