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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 host

show performance host

Function

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

Format

show performance host host_id=?

show performance host host_id_list=?

Parameters

Parameter

Description

Value

host_id=?

ID of a host.

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

host_id_list=?

ID list of hosts.

  • To obtain the value, run "show host general".
  • Separate the host IDs with commas (,) or hyphens (-).
  • A maximum of 50 IDs can be queried.

Level

Guest

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.

Example

Query the performance statistics on the read I/Os for host "0".

admin:/>show performance host host_id=0 
0.Max. Bandwidth(MB/s)                                    
1.Queue Length                                            
2.Bandwidth(MB/s) / Block Bandwidth(MB/s)                 
3.Throughput(IOPS)(IO/s)                                  
4.Read Bandwidth(MB/s)                                    
5.Average Read I/O Size(KB)                               
6.Read Throughput(IOPS)(IO/s)                             
7.Write Bandwidth(MB/s)                                   
8.Average Write I/O Size(KB)                              
9.Write Throughput(IOPS)(IO/s)                            
10.Read I/O Granularity Distribution: [0K,1K)(%)          
11.Read I/O Granularity Distribution: [1K,2K)(%)          
12.Read I/O Granularity Distribution: [2K,4K)(%)          
13.Read I/O Granularity Distribution: [4K,8K)(%)          
14.Read I/O Granularity Distribution: [8K,16K)(%)         
15.Read I/O Granularity Distribution: [16K,32K)(%)        
16.Read I/O Granularity Distribution: [32K,64K)(%)        
17.Read I/O Granularity Distribution: [64K,128K)(%)       
18.Read I/O Granularity Distribution: [128K,256K)(%)      
19.Read I/O Granularity Distribution: [256K,512K)(%)      
20.Read I/O Granularity Distribution: >= 512K(%)          
21.Write I/O Granularity Distribution: [0K,1K)(%)         
22.Write I/O Granularity Distribution: [1K,2K)(%)         
23.Write I/O Granularity Distribution: [2K,4K)(%)         
24.Write I/O Granularity Distribution: [4K,8K)(%)         
25.Write I/O Granularity Distribution: [8K,16K)(%)        
26.Write I/O Granularity Distribution: [16K,32K)(%)       
27.Write I/O Granularity Distribution: [32K,64K)(%)       
28.Write I/O Granularity Distribution: [64K,128K)(%)      
29.Write I/O Granularity Distribution: [128K,256K)(%)     
30.Write I/O Granularity Distribution: [256K,512K)(%)     
31.Write I/O Granularity Distribution: >= 512K(%)         
32.Average IO Size(KB)                                    
33.% Read                                                 
34.% Write                                                
35.Max IOPS(IO/s)                                         
36.Service Time(Excluding Queue Time)(us)                 
37.Average I/O Latency(us)                                
38.Max. I/O Latency(us)                                   
39.Average Read I/O Latency(us)                           
40.Average Write I/O Latency(us)                          
Input item(s) number separated by comma:6 
 Read Throughput(IOPS) (IO/s) : 35

System Response

The following table describes the parameter meanings.

Parameter

Meaning

Max. Bandwidth(MB/s)

Maximum bandwidth.

Queue Length

Queue length.

Bandwidth(MB/s) / Block Bandwidth(MB/s)

Bandwidth.

Throughput(IOPS)(IO/s)

Input/output operations per second.

Read Bandwidth(MB/s)

Read bandwidth.

Average Read I/O Size(KB)

Average read I/O size.

Read Throughput(IOPS)(IO/s)

Read operations per second.

Write Bandwidth(MB/s)

Write bandwidth.

Average Write I/O Size(KB)

Average write I/O size.

Write Throughput(IOPS)(IO/s)

Service time (excluding the queue time).

Read I/O Granularity Distribution: [0K,1K)(%)

Proportion of read I/Os with I/O size [0 KB, 1 KB).

Read I/O Granularity Distribution: [1K,2K)(%)

Proportion of read I/Os with I/O size [1 KB, 2 KB).

Read I/O Granularity Distribution: [2K,4K)(%)

Proportion of read I/Os with I/O size [2 KB, 4 KB).

Read I/O Granularity Distribution: [4K,8K)(%)

Proportion of read I/Os with I/O size [4 KB, 8 KB).

Read I/O Granularity Distribution: [8K,16K)(%)

Proportion of read I/Os with I/O size [8 KB, 16 KB).

Read I/O Granularity Distribution: [16K,32K)(%)

Proportion of read I/Os with I/O size [16 KB, 32 KB).

Read I/O Granularity Distribution: [32K,64K)(%)

Proportion of read I/Os with I/O size [32 KB, 64 KB).

Read I/O Granularity Distribution: [64K,128K)(%)

Proportion of read I/Os with I/O size [64 KB, 128 KB).

Read I/O Granularity Distribution: [128K,256K)(%)

Proportion of read I/Os with I/O size [128 KB, 256 KB).

Read I/O Granularity Distribution: [256K,512K)(%)

Proportion of read I/Os with I/O size [256 KB, 512 KB).

Read I/O Granularity Distribution: >= 512K(%)

Proportion of read I/Os with I/O size greater than or equal to 512 KB.

Write I/O Granularity Distribution: [0K,1K)(%)

Proportion of write I/Os with I/O size [0 KB, 1 KB).

Write I/O Granularity Distribution: [1K,2K)(%)

Proportion of write I/Os with I/O size [1 KB, 2 KB).

Write I/O Granularity Distribution: [2K,4K)(%)

Proportion of write I/Os with I/O size [2 KB, 4 KB).

Write I/O Granularity Distribution: [4K,8K)(%)

Proportion of write I/Os with I/O size [4 KB, 8 KB).

Write I/O Granularity Distribution: [8K,16K)(%)

Proportion of write I/Os with I/O size [8 KB, 16 KB).

Write I/O Granularity Distribution: [16K,32K)(%)

Proportion of write I/Os with I/O size [16 KB, 32 KB).

Write I/O Granularity Distribution: [32K,64K)(%)

Proportion of write I/Os with I/O size [32 KB, 64 KB).

Write I/O Granularity Distribution: [64K,128K)(%)

Proportion of write I/Os with I/O size [64 KB, 128 KB).

Write I/O Granularity Distribution: [128K,256K)(%)

Proportion of write I/Os with I/O size [128 KB, 256 KB).

Write I/O Granularity Distribution: [256K,512K)(%)

Proportion of write I/Os with I/O size [256 KB, 512 KB).

Write I/O Granularity Distribution: >= 512K(%)

Proportion of write I/Os with I/O size greater than or equal to 512 KB.

Average IO Size(KB)

Average I/O latency.

% Read

Read ratio (%).

% Write

Write ratio (%).

Max IOPS(IO/s)

Maximum Input/output operations per second.

Service Time(Excluding Queue Time)(us)

Service time (excluding the queue time).

Average I/O Latency(us)

Average I/O latency.

Max. I/O Latency(us)

Maximum I/O latency.

Average Read I/O Latency(us)

Average read I/O latency.

Average Write I/O Latency(us)

Average write I/O latency.

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Updated: 2019-07-16

Document ID: EDOC1100049140

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