I am using Linux CentOS 7.2 version.
I have searched details about this but can't found any useful information.
What is this about?
asked Nov 29, 2016 at 15:54
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1 Answer
From free(1):
Estimation of how much memory is available for starting new applications, without swapping. 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 (
MemAvailablein/proc/meminfo, available on kernels 3.14, emulated on kernels 2.6.27+, otherwise the same asfree)
It reports the amount of physical memory that's available, i.e. that can be used without causing the system to start swapping. How can I get the amount of available memory portably across distributions? has more information.
answered Nov 29, 2016 at 16:01
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Thanks for infomation but I need to how to calculate "available" options from ram and whether relating buffer and cache memoryand etc ?Babak Mammadov– Babak Mammadov2016-11-30 07:04:47 +00:00Commented Nov 30, 2016 at 7:04
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@BabakMammadov, could you edit your question to explain exactly what information you're looking for then? Did you see the linked question? It explains the algorithm used to calculate the available memory.Stephen Kitt– Stephen Kitt2016-11-30 07:59:11 +00:00Commented Nov 30, 2016 at 7:59
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Thanks. Does "available" consist of exactly "free" and part of "buffer/cache"? Which part of "buffer/cache" does "available" not consist of?Tim– Tim2018-10-29 14:23:05 +00:00Commented Oct 29, 2018 at 14:23
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@Tim the linked question details exactly how “available” is calculated.Stephen Kitt– Stephen Kitt2018-10-29 14:28:40 +00:00Commented Oct 29, 2018 at 14:28
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"Estimation of how much memory is available for starting new applications, without swapping. " Does it mean "Estimation of how much memory is available for starting new processes, without swapping." instead of existing processes calling execve() to run new applications?Tim– Tim2018-10-29 14:56:38 +00:00Commented Oct 29, 2018 at 14:56