In the /proc/meminfo file, the meaning of these two parameters
CommitLimit: 13113600 kB
Committed_AS: 11808640 kB
In /proc/meminfothe file , CommitLimit and Committed_AS are two parameters related to memory usage.
- CommitLimit indicates how much memory the system can use now, including allocated but unused memory. If the system hits this limit, it starts using virtual memory (swap space), which can cause performance degradation.
In this example, the value of CommitLimit is 13113600 KB, that is, the system can use up to 13113600 KB (about 12.5 GB) of memory.
- Committed_AS indicates the currently allocated memory size for the system (including allocated but unused memory), that is, the actual memory size currently used by the system. If the value of Committed_AS is close to or higher than the CommitLimit, it may indicate excessive system memory usage, so you may need to add more memory or optimize the system configuration.
In this example, the value of Committed_AS is 11808640 KB, that is, the system currently uses 11808640 KB (about 11.2 GB) of memory.
Note that if the value of Committed_AS is close to the CommitLimit, but the system is still running smoothly, this does not necessarily indicate a problem. Therefore, when using these two parameters, other factors need to be considered comprehensively, including resource requirements for running applications and system performance.
In Linux memory management, CommitLimit and Committed_AS are two important parameters, which can be used to understand the memory usage of the system and whether the system can meet the current memory requirements. The meaning and usage of these two parameters are introduced respectively as follows:
- CommitLimit
CommitLimit indicates how much memory the system can use now, including allocated but unused memory. If the system hits this limit, it starts using virtual memory (swap space), which can cause performance degradation.
Using the CommitLimit parameter can help administrators effectively plan the memory usage of the system, so as to prevent the system from running slowly or crashing due to high memory usage.
In /proc/meminfothe file , the value of CommitLimit is expressed in KB, which can be obtained by the following command:
$ cat /proc/meminfo | grep CommitLimit
- Committed_AS
Committed_AS indicates the currently allocated memory size for the system (including allocated but unused memory), that is, the actual memory size currently used by the system. If the value of Committed_AS is close to or higher than the CommitLimit, it may indicate excessive system memory usage, so you may need to add more memory or optimize the system configuration.
The Committed_AS parameter can be used to detect the memory usage of the application, so as to prevent the application from taking up too much memory and causing the system to run slowly or crash.
In /proc/meminfothe file , the value of Committed_AS is expressed in KB, which can be obtained by the following command:
$ cat /proc/meminfo | grep Committed_AS
It should be noted that the specific usage and meaning of these two parameters need to be considered in combination with the actual situation of the specific system. They can be used to help administrators monitor the memory usage of the system to optimize and tune the system, but other factors need to be considered comprehensively, such as CPU usage, disk I/O, and so on.