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Command Reference for Block

OceanStor Dorado V3 Series V300R002

This document is applicable to OceanStor Dorado3000 V3, Dorado5000 V3, Dorado6000 V3 and Dorado18000 V3. Based on the CLI provided by the DeviceManager, this document describes how to use various commands classified by functions and how to set the CLI and manage the storage system through these commands.
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show performance disk

show performance disk


The show performance disk command is used to query the performance statistics on a hard disk. Run this command to analyze the performance statistics on a hard disk in real time.


show performance disk [ disk_id=? ] [ disk_id_list=? ]






ID of a hard disk on which you want to query performance statistics.

To obtain the value, run "show disk general".


List of hard disk IDs on which you want to query performance statistics.

  • To obtain the value, run "show disk general".
  • Separate the ID list of disks with commas (,), or ID range by hyphens (-).
  • A maximum of 50 IDs can be queried.



Usage Guidelines

  • You will be prompted with optional performance statistics categories upon running this command. In this condition, typing a number or multiple numbers (separated by commas) for the selected categories and pressing "Enter" displays the performance statistics for those categories.
  • Performance statistics will be updated in real time.
  • Typing "q" on the command line interface (CLI) exits the active performance statistics display.


Query the I/O throughput for the hard disk in slot "0" of enclosure "CTE0".

admin:/>show performance disk disk_id=CTE0.0 
0.Max. Bandwidth(MB/s) 
1.Usage Ratio(%) 
2.Queue Length 
3.Bandwidth(MB/s) / Block Bandwidth(MB/s) 
5.Read Bandwidth(MB/s) 
6.Average Read I/O Size(KB) 
7.Read Throughput(IOPS)(IO/s) 
8.Write Bandwidth(MB/s) 
9.Average Write I/O Size(KB) 
10.Write Throughput(IOPS)(IO/s) 
11.Read I/O Granularity Distribution: [0K,1K)(%) 
12.Read I/O Granularity Distribution: [1K,2K)(%) 
13.Read I/O Granularity Distribution: [2K,4K)(%) 
14.Read I/O Granularity Distribution: [4K,8K)(%) 
15.Read I/O Granularity Distribution: [8K,16K)(%) 
16.Read I/O Granularity Distribution: [16K,32K)(%) 
17.Read I/O Granularity Distribution: [32K,64K)(%) 
18.Read I/O Granularity Distribution: [64K,128K)(%) 
19.Read I/O Granularity Distribution: [128K,256K)(%) 
20.Read I/O Granularity Distribution: [256K,512K)(%) 
21.Read I/O Granularity Distribution: >= 512K(%) 
22.Write I/O Granularity Distribution: [0K,1K)(%) 
23.Write I/O Granularity Distribution: [1K,2K)(%) 
24.Write I/O Granularity Distribution: [2K,4K)(%) 
25.Write I/O Granularity Distribution: [4K,8K)(%) 
26.Write I/O Granularity Distribution: [8K,16K)(%) 
27.Write I/O Granularity Distribution: [16K,32K)(%) 
28.Write I/O Granularity Distribution: [32K,64K)(%) 
29.Write I/O Granularity Distribution: [64K,128K)(%) 
30.Write I/O Granularity Distribution: [128K,256K)(%) 
31.Write I/O Granularity Distribution: [256K,512K)(%) 
32.Write I/O Granularity Distribution: >= 512K(%) 
33.Average IO Size(KB) 
34.Complete SCSI commands per second 
35.Verify commands per second 
36.% Read 
37.% Write 
38.Max IOPS(IO/s) 
39.Service Time(Excluding Queue Time)(us) 
40.Average I/O Latency(us) 
41.Max. I/O Latency(us) 
42.Average Read I/O Latency(us) 
43.Average Write I/O Latency(us) 
44.The cumulative count of I/Os 
45.The cumulative count of data transferred in Kbytes 
46.The cumulative elapsed I/O time(ms) 
47.The cumulative count of all reads 
48.The cumulative count of data read in Kbytes(1024bytes = 1KByte) 
49.The cumulative count of all writes 
50.The cumulative count of data written in Kbytes                
Input item(s) number separated by comma:5 
  Read Bandwidth (MB/s) : 11 

System Response


Updated: 2019-07-16

Document ID: EDOC1100049140

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