Redis CPU Test
CPU contentions on the Redis server can significantly degrade the performance of the server. To avoid this, administrators must track the CPU usage of the server over time, proactively detect potential CPU contentions, and accurately isolate what is causing excessive CPU usage on the server - main/background system processes? main/background user processes? This can be achieved using the Redis CPU test.
This test monitors the CPU usage of the Redis server and alerts administrators to erratic usage patterns on the server and what is causing them. This way, the test helps administrators isolate and pre-empt CPU contentions on the server, and thus improve server performance.
Target of the test :A Redis server
Agent deploying the test : An internal agent (recommended)
Outputs of the test : One set of results for the target Redis server
Parameters | Description |
---|---|
Test period |
How often should the test be executed |
Host |
The host for which the test is to be configured. |
Port |
The port at which the specified HOST listens. |
Redis Password and Confirm Password |
In some high security environments, a password may have been set for the Redis server, so as to protect it from unauthorized accesses/abuse. If such a password has been set for the monitored Redis server, then specify that password against REDIS PASSWORD. Then, confirm the password by retyping it against CONFIRM PASSWORD. If the Redis server is not password protected, then do not disturb the default setting of this parameter. To determine whether/not the target Redis server is password-protected, do the following:
|
Measurement | Description | Measurement Unit | Interpretation |
---|---|---|---|
CPU utilization of Redis server |
Indicates the percentage of CPU resources used by the target server. |
Percent |
A value close to 100% is a cause for concern, as it implies that the server is using CPU resources excessively. If the situation persists, the server may soon not have enough processing power to process requests to it. |
System CPU consumed by the Redis server |
Indicates the duration for which system processes utilized CPU. |
Seconds |
This is the sum of system CPU consumed by main threads and background threads of the server process. By comparing the value of this measure with that of the User CPU consumed by Redis server measure, you can instantly determine whether system processes are CPU-hungry or user processes. |
System CPU consumed by background processes |
Indicates the period of time for which background system processes hogged the CPU. |
Seconds |
If the value of the System CPU consumed by Redis server measure is abnormally high, you may want to determine what type of system processes are CPU-intensive - background processes? main processes? While the value of this measure will indicate how much CPU was used by background system processes, you can quickly compute the CPU usage of main system processes using this formula: System CPU consumed by Redis server (-) System CPU consumed by background processes Then, compare the value of this measure with the result of the above computation to figure out the root-cause of the excessive CPU usage by system processes. |
User CPU consumed by Redis server |
Indicates the duration for which user processes hogged CPU resources. |
Seconds |
This is the sum of user CPU consumed by main threads and background threads of the server process. By comparing the value of this measure with that of the System CPU consumed by Redis server measure, you can instantly determine whether system processes are CPU-hungry or user processes. |
User CPU consumed by the background processes |
Indicates the period of time for which background user processes hogged the CPU. |
Seconds |
If the value of the User CPU consumed by Redis server measure is abnormally high, you may want to determine what type of users rocesses are CPU-intensive - background processes? main processes? While the value of this measure will indicate how much CPU was used by background user processes, you can quickly compute the CPU usage of main user processes using this formula: User CPU consumed by Redis server (-) User CPU consumed by background processes Then, compare the value of this measure with the result of the above computation to figure out the root-cause of the excessive CPU usage by user processes. |