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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 lun_priority

show performance lun_priority

Function

The show performance lun_priority command is used to query the performance statistics of LUNs with a specific I/O priority. This command is used when the real-time performance statistics of LUNs with a specific I/O priority needs to be analyzed.

Format

show performance lun_priority io_priority=? [ controller_id=? ] [ controller_id_list=? ]

Parameters

Parameter

Description

Value

controller_id=?

Owning controller ID of LUNs.

To obtain the value, run the command "show controller general".

io_priority=?

I/O priority of LUNs.

The value can be:

  • "Low": The I/O priority is low.
  • "Middle": The I/O priority is middle.
  • "High": The I/O priority is high.

controller_id_list=?

List of owning controller IDs of LUNs.

To obtain the value, run the command "show controller general".When multiple owning controllers of LUNs need to be added, separate these owning controller IDs of LUNs with commas (,).

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" display 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 of LUNs whose owning controller is "0A" and I/O priority is "Low".

admin:/>show performance lun_priority io_priority=Low controller_id=0A 
0.Bandwidth(MB/s) / Block Bandwidth(MB/s)     
1.Throughput(IOPS)(IO/s)                      
2.Read Bandwidth(MB/s)                        
3.Read Throughput(IOPS)(IO/s)                 
4.Write Bandwidth(MB/s)                       
5.Write Throughput(IOPS)(IO/s)                
6.Average I/O Latency(ms)                     
7.Average Read I/O Latency(ms)                
8.Average Write I/O Latency(ms)               
9.Average I/O Latency(us)                     
10.Average Read I/O Latency(us)               
11.Average Write I/O Latency(us)              
Input item(s) number separated by comma:0 
  Bandwidth(MB/s) / Block Bandwidth(MB/s) : 0

System Response

The following table describes the parameter meanings.

Parameter

Meaning

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

Bandwidth.

Throughput(IOPS)(IO/s)

Input/output operations per second.

Read Bandwidth(MB/s)

Read bandwidth.

Read Throughput(IOPS)(IO/s)

Read operations per second.

Write Bandwidth(MB/s)

Write bandwidth.

Write Throughput(IOPS)(IO/s)

Write operations per second.

Average I/O Latency(ms)

Average I/O latency(ms).

Average Read I/O Latency(ms)

Average read I/O latency(ms).

Average Write I/O Latency(ms)

Average write I/O latency(ms).

Average I/O Latency(us)

Average I/O latency(us).

Average Read I/O Latency(us)

Average read I/O latency(us).

Average Write I/O Latency(us)

Average write I/O latency(us).

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Updated: 2019-07-16

Document ID: EDOC1100049140

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