Dirty - The total amount of memory, in kilobytes, waiting to be written back to the disk.
SwapFree - The total amount of swap free, in kilobytes. SwapTotal - The total amount of swap available, in kilobytes. The LowTotal value can vary based on the type of kernel used. LowTotal and LowFree - The total and free amount of memory, in kilobytes, that is directly mapped into kernel space. The HighTotal value can vary based on the type of kernel used. HighTotal and HighFree - The total and free amount of memory, in kilobytes, that is not directly mapped into kernel space. This is memory that has not been recently used and can be reclaimed for other purposes. Inactive - The total amount of buffer or page cache memory, in kilobytes, that are free and available. This is memory that has been recently used and is usually not reclaimed for other purposes. Active - The total amount of buffer or page cache memory, in kilobytes, that is in active use. SwapCached - The amount of swap, in kilobytes, used as cache memory. Cached - The amount of physical RAM, in kilobytes, used as cache memory. Buffers - The amount of physical RAM, in kilobytes, used for file buffers. MemFree - The amount of physical RAM, in kilobytes, left unused by the system. MemTotal - Total amount of physical RAM, in kilobytes. Linux System Memory usageĭisplay amount of free and used memory in the system (-m = in megas) $ free -m This entry will hopefully show you how to troubleshoot memory used by Linux and application.
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