I have a 2 cpu server running SLES 11.4 x86-64 and it has 1.5 tb of RAM.
>free -g total used free shared buffers cached Mem: 1514 284 1230 268 0 269
Running a number crunching software, which has worked fine in the past, giving us problems lately running slow and crashing, trying to figure out why.
I tried to do a
echo 3 > /proc/sys/vm/drop_caches and that did not work. It usually puts
cached to zero, did not work this time.
my questions are:
- what would cause
echo 3 > /proc/sys/vm/drop_cachesnot to work?
- does the cached value even matter?
- is there another way to accurately find out current state of RAM used/cached/whatever besides the free command?
- given this type of problem and troubleshooting, any recommendation?