Method used to develop performance statistics by using the common line interface

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You can perform the following operations to develop performance statistics by using the CLI:
1. Fault location and rectification
You can use the CLI to manually collect performance data.
2. Solution
You can collect performance data through ports and LUNs. The following commands are entered and performed in sequence in CLI mode and their displayed results are saved in logs.
a. Collecting data by port
OceanStor: admin> chgstatswitch -o -p
OceanStor: admin> statperf -p
Enter the above commands at an interval of 3s for 10 times.
OceanStor: admin> chgstatswitch -c -p
Based on port statistics, the maximum latency is not more than 1.5s, the average latency is not more than 300 ms, and I/O processing is in normal state.
b. Collecting data by LUN
OceanStor: admin> chgstatswitch -o -l
OceanStor: admin> statperf -l
Enter the above commands at an interval of 3 seconds for 10 times.
OceanStor: admin> chgstatswitch -c -1

Other related questions:
Method used to locate common performance problems on OceanStor V3 storage systems
Before optimizing the performance and locating the problem, you must have the current customer performance data at hand. Then, you can use the I/O path to locate the module where the performance problem occurs. Once this is complete you can locate the problem and optimize performance. For details, see Performance Problem Diagnosis .

Common methods to locate the cause of poor performance
Refer to Revelations of Troublesolving cases on the right.

Method used to configure the authorized ARP on USG firewalls
After the Authorized Address Resolution Protocol (authorized ARP) is enabled, the DHCP server automatically adds an ARP entry that contains the MAC address and IP address of the client to the ARP mapping table when successfully allocating an IP address to the client. In this way, the attacks to the network by forging IP addresses or MAC addresses of other legal DHCP clients are prevented, and the network security is improved. The authorized ARP is valid only on devices that enable the DHCP server function. The authorized ARP is only applicable to the networking on which the DHCP server and DHCP client are in the same network segment instead of the DCHP relay networking. To enable the authorized ARP, run the dhcp arpbind enable command in the system view. By default, the authorized ARP is not enabled on the device.

Methods used to perform dual-screen tests
Visit the FusionCloud forum at http://support.huawei.com/huaweiconnect/enterprise/forum-893.html and search for 'dual-screen' cases in the forum.

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