disk Storage IOPS的值,怎樣跟作業系統比對

[watermelonyu]

在購買Disk Storage 的時候,廠商都會提出一個值,IOPS

來表示這個storage的乘載量

我如何得知我現在的作業系統+ DB,現在每秒的I/O次數是多少

來比對這的IOPS值是否符合現有環境

[watermelonyu]

Hi Joey,



Summary both of "R/S" and "W/S" total counts

on all of disks IO accessing via collect command as below:



PS: The collgui is helped to verify the average IOPS utilization easily.



# collect -sd -p FILE.cgz

# DISK Statistics

#DSK NAME B/T/L R/S RKB/S W/S WKB/S AVS AVW ACTQ WTQ %BSY

..

8 dsk15 - 221 4993 139 3394 8.36 4.72 3.01 0.89 89.53

9 dsk16 - 428 5729 94 1840 5.22 3.95 2.73 1.15 89.96

10 dsk17 - 403 3234 77 623 7.75 3.70 3.73 1.17 96.76

11 dsk18 - 45 370 4 32 6.95 6.95 0.35 0.08 31.37

12 dsk19 - 0 0 0 6 3.76 1.02 0.00 0.00 0.12

13 dsk20 - 0 0 0 0 0.00 0.00 0.00 0.00 0.00

14 dsk56 - 358 6903 54 434 6.07 4.84 2.51 1.21 95.92

15 dsk58 - 181 1453 38 311 9.78 5.75 2.16 0.87 93.11

16 dsk53 - 195 1867 11 91 6.74 5.61 1.39 0.60 78



Best regards,

Richard.

[watermelonyu]

感謝

那如果是其他作業系統的話,像是linux and HPUX

有相對應的指令可以查到嗎?

[watermelonyu]

Hi,



Please use the command "sar -d" for summary the amount of "r+w/s" on all of accessing disks. Or use a charge system performance tool for disk analysis.



# man sar

..

-d Reports disk device activity. These reports include:

..

r+w/s The number of reads from and writes to the device



Richard.