11/20/2022 0 Comments Linux get free memory![]() Prior to Linux 2.5.41, this includes IO-wait time. In: The number of interrupts per second, including the clock.Ĭs: The number of context switches per second. So: Amount of memory swapped to disk (/s).īi: Blocks received from a block device (blocks/s).īo: Blocks sent to a block device (blocks/s). Si: Amount of memory swapped in from disk (/s). (-a option)Īctive: the amount of active memory. R: The number of runnable processes (running or waiting for run time).ī: The number of processes in uninterruptible sleep.īuff: the amount of memory used as buffers.Ĭache: the amount of memory used as cache. The following information are displayed by default: Vmstat reports information about processes, memory, paging, block IO, traps, disks and cpu activity. To display in MB (megabytes), use “free -m”. The default option displays the memory in KB (kilobytes). Linux get free memory free#Total used free shared buff/cache available Unlike the data provided by the cache or free fields, this field takes into account page cache and also that not all reclaimable memory slabs will be reclaimed due to items being in use (MemAvailable in /proc/meminfo, available on kernels 3.14, emulated on kernels 2.6.27+, otherwise the same as free) available: Estimation of how much memory is available for starting new applications, without swapping.cache: Memory used by the page cache and slabs (Cached and Slab in /proc/meminfo).buffers: Memory used by kernel buffers (Buffers in /proc/meminfo).shared: Memory used (mostly) by tmpfs (Shmem in /proc/meminfo, available on kernels 2.6.32, displayed as zero if not available).free: Unused memory (MemFree and SwapFree in /proc/meminfo).used: Used memory (calculated as total – free – buffers – cache).total: Total installed memory (MemTotal and SwapTotal in /proc/meminfo).The information is gathered by parsing /proc/meminfo. Free command displays the total amount of free and used physical and swap memory in the system, as well as the buffers and caches used by the kernel. ![]()
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