It gives you resource being utilized by each process. That way we don’t start panicking when the server says 99% of memory is being used, but in reality that memory is being used by the Linux page cache. Simplest way to monitor your resource utilization in Ubuntu via CLI is TOP Command. Apart from monitoring, you can also take several actions from the system monitor user interface such as killing a running process. When kbmemused is over 917504 KB or 896 MB, and kbcached is under 131072 KB or 128MB this command will output the memory usage stats from sar.ĭoing it this way we can ensure that we’re only looking at times when our actual free memory on the server has dipped below 128MB. Similar to Windows Task Manager, Ubuntuoffers a system monitoring utility that will display running processes, memory usage, file system usage. The command below goes through your sar logs and shows anytime that your server’s memory is spiking. Its called 'swap' because the system will move some inactive pages in memory into the. The kbcached column shows how much memory was cached. It gets used when the systems physical memory (RAM) is full and the system needs more memory resources. The %memused column shows how much memory was used as a percentage of total memory available. The kbmemused column shows how much memory was used. The kbmemfree column shows how much memory was free.
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