Setting Per-Second Performance Monitoring for Converged Services

Prerequisites

A storage pool has been created.

Context

Before per-second performance monitoring is enabled, there is limited space for storing performance monitoring data. As a result, the data can only be stored for a short period of time at a coarse granularity. After this function is enabled, performance monitoring data is written to the mounted namespace and can be stored for a longer time at a finer granularity.

Procedure

1. Choose Settings > Monitoring Settings > Per-Second Performance Monitoring.
2. Click Modify in the upper right corner of the page.
3. Set per-second performance monitoring.
   Set basic information about per-second performance monitoring. Table 1 describes related parameters.

   Table 1 Per-second performance monitoring parameters

   Parameter	Description
   Per-Second Performance Monitoring	Select whether to enable per-second performance monitoring. Enable: Performance monitoring data is written to a specified namespace. Disable: Performance monitoring data will no longer be written to the namespace. If you select Delete per-second performance monitoring configurations, the per-second performance monitoring data that has been saved to the namespace will be deleted (unable to be restored) and can no longer be viewed. If you do not select Delete per-second performance monitoring configurations, the data that has been saved to the namespace will not be deleted. NOTE: If per-second performance monitoring has never been enabled, a message will be displayed on the top of DeviceManager: "The system detects that per-second performance monitoring is not enabled. Enabling this function helps you analyze performance more accurately. Do you want to enable the function? After enablement, this prompt will be automatically cleared."
   Storage Pool	Select a storage pool where the per-second performance monitoring data is to be stored.
   Namespace	Determine a name for the namespace to be mounted for the storage of per-second performance monitoring data. NOTE: The character string provided in the text box is the prefix of the namespace.
   Space Hard Quota	If the used file space reaches the space hard quota, the system immediately forbids writes and reports an alarm. The file space that exceeds the hard quota cannot be used. [Value range] 100 GB to 16 TB The value must be greater than the space soft quota and space advisory quota. NOTE: If the used file space reaches the hard quota, the system forbids writes. If you want the system to report an alarm before writes are forbidden, set a soft quota and an advisory quota.
   Bandwidth Upper Limit	Set a bandwidth upper limit. That is, the maximum amount of I/O data that can be processed by a single namespace per second. The unit is MB/s. [Value range] 0 MB/s to 1073741824 MB/s
   OPS Upper Limit	Set an OPS upper limit. That is, the maximum number of operations that can be performed on a single namespace per second. [Value range] 0 to 1073741824000

4. Click Save.