On 02/10/2016 10:13 AM, Dave Hansen wrote:
On 02/10/2016 10:04 AM, Daniel Walker wrote:
[Linux_0:/]$ echo 3 > /proc/sys/vm/drop_caches
[Linux_0:/]$ cat /proc/meminfo
MemTotal: 3977836 kB
MemFree: 1095012 kB
MemAvailable: 1434148 kB
I suspect MemAvailable takes into account more than just the droppable
caches. For instance, reclaimable slab is included, but I don't think
drop_caches drops that part.
There's a bit for page cache and a bit for slab, see:
https://kernel.org/doc/Documentation/sysctl/vm.txt
Ok, then this looks like a defect then. I would think MemAvailable would
always be smaller then MemFree (after echo 3 >
/proc/sys/vm/drop_caches).. Unless there is something else be accounted
for that we aren't aware of.
Daniel
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