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a� Fallback for kernels < 3.14 where /proc/meminfo does not provide
"MemAvailable:" column, see:
https://blog.famzah.net/2014/09/24/
This code reimplements the algorithm outlined here:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/
commit/?id=34e431b0ae398fc54ea69ff85ec700722c9da773
XXX: on recent kernels this calculation differs by ~1.5% than
"MemAvailable:" as it's calculated slightly differently, see:
https://gitlab.com/procps-ng/procps/issues/42
https://github.com/famzah/linux-memavailable-procfs/issues/2
It is still way more realistic than doing (free + cached) though.
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utility values and procps-ng-3.3.12 source was used as a reference
(2016-09-18):
https://gitlab.com/procps-ng/procps/blob/
24fd2605c51fccc375ab0287cec33aa767f06718/proc/sysinfo.c
For reference, procps-ng-3.3.10 is the version available on Ubuntu
16.04.
Note about "available" memory: up until psutil 4.3 it was
calculated as "avail = (free + buffers + cached)". Now
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it's more accurate.
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local endpoint/path, not the one it's connected to.
According to [1] it would be possible but not easily.
[1] http://serverfault.com/a/417946
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Reference:
http://linuxdevcenter.com/pub/a/linux/2000/11/16/LinuxAdmin.html
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