标签: iozone

两个 HDD 制造商在 iozone O_SYNC 基准测试中的根本性能差异很大

我有两台服务器 A 和 B,配置如下:

  • A:4TB HDD,带 RAID 1 (MegaRAID SAS 2008),128MB 缓存,无 BBU,直写模式,7.2k RPM,制造商 A。
  • B:1.5TB HDD,带 RAID 1 (MegaRAID SAS 3108),64MB 缓存,带 BBU,但直写模式,10.5k RPM,制造商 B。

我在单个 RAID 分区上运行以下基准测试: iozone -a -s 10240 -r 4 -+r

A的结果(摘录):

                                                            random  random    bkwd   record   stride
          kB  reclen   write rewrite    read    reread    read   write    read  rewrite     read   fwrite frewrite   fread  freread
       10240       4     108     474  4193564  6667334 6556395     701 4058822      475  3653175  2303202  2616201 6785306  6101840
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B的结果(摘录):

                                                            random  random    bkwd   record   stride
          kB  reclen …
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hard-drive iozone benchmark

5
推荐指数
1
解决办法
398
查看次数

臭氧产生错误的结果

我不确定为什么会发生这种情况,但这些是完全错误的结果:

    Children see throughput for 15 re-readers       = 12793134.62 KB/sec
    Parent sees throughput for 15 re-readers        = 12753940.84 KB/sec
    Min throughput per process                      =  515695.50 KB/sec 
    Max throughput per process                      = 1088000.75 KB/sec
    Avg throughput per process                      =  852875.64 KB/sec
    Min xfer                                        =  249856.00 KB

    Children see throughput for 15 random readers   = 12667347.75 KB/sec
    Parent sees throughput for 15 random readers    = 12613558.90 KB/sec
    Min throughput per process                      =  685239.00 KB/sec 
    Max throughput per process                      = 1318021.25 KB/sec
    Avg …
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linux performance iozone

2
推荐指数
1
解决办法
1213
查看次数

标签 统计

iozone ×2

benchmark ×1

hard-drive ×1

linux ×1

performance ×1