IOPs

By | August 8, 2011

Descobri hoje o fio e resolvi fazer alguns testes.

Vai aqui um breve comparativo just-for-fun de um random-read:

Latitude E6400 (meu laptop)

  • kernel 2.6.35 (Mint Julia)
  • Filesystem EXT4
  • Disco:
           description: ATA Disk
           product: ST9250421ASG
           vendor: Seagate

read : io=131072KB, bw=589452B/s, iops=143, runt=227699msec

Dell Power Edge T110

  • Kernel 2.6.38 (Ubuntu Natty)
  • Filesystem Reiserfs
  • Disco:
       description: ATA Disk
       product: WDC WD2502ABYS-1
       vendor: Western Digital

read : io=131072KB, bw=700945B/s, iops=171, runt=191481msec

  • RaidZ (fuse ZFS) composto dos seguintes discos:
  *-disk:1
       description: ATA Disk
       product: ST31000524AS
       vendor: Seagate
  *-disk:2
       description: ATA Disk
       product: Hitachi HDS72101
       vendor: Hitachi
  *-disk:3
       description: ATA Disk
       product: ST31000528AS
       vendor: Seagate

read : io=262144KB, bw=1066KB/s, iops=266, runt=246014msec

Dell Power Edge 2850

  • Kernel 2.6.18-164 (CentOS 5.4)
  • Filesystem EXT3/LVM
  • Disco:
  *-disk ->> Isso é um RAID5 composto de 4 discos SAS 15K
       description: SCSI Disk
       product: LD 0 RAID5  559G
       vendor: MegaRAID

read : io=262144KB, bw=1950.6KB/s, iops=487 , runt=134429msec

 

UPDATE:

Configuração usada pros testes:

[random-read]
rw=randread
size=256m
directory=/partição/fio/data

 

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4 thoughts on “IOPs

  1. Robson Soares

    Bacana!!!
    Vejo que aceitou minha sugestão e “aderiu” ao Linux Mint! 😀
    É ou n é bom p/ caramba??

  2. andreyev

    Não achei o iops aqui… Será que a versão é diferente:

    random-read: (g=0): rw=randread, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1
    Starting 1 thread
    random-read: Laying out IO file(s) (1 x 256MiB == 256MiB)
    Threads: 1: [r] [100.0% done] [ 12165/ 0 kb/s] [eta 00m:00s]
    random-read: (groupid=0): err= 0: pid=10759
    read : io=256MiB, bw=10,018KiB/s, runt= 26795msec
    clat (msec): min= 0, max= 31, avg= 0.04, stdev= 0.42
    bw (KiB/s) : min= 5414, max=14327, per=99.76%, avg=9994.40, stdev=2404.51
    cpu : usr=0.86%, sys=21.28%, ctx=62257
    IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
    lat (msec): 2=99.7%, 4=0.1%, 10=0.1%, 20=0.0%, 50=0.0%, 100=0.0%
    lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

    Run status group 0 (all jobs):
    READ: io=256MiB, aggrb=10,018KiB/s, minb=10,018KiB/s, maxb=10,018KiB/s, mint=26795msec, maxt=26795msec

    Disk stats (read/write):
    sda: ios=65161/11, merge=2/35, ticks=24404/152, in_queue=24520, util=89.89%

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