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
