Swap space used is above threshold of 90
 

Hi all,

i am facing an issues in linux box which is Swap space used is above threshold of 90
[oracle@gbaheovl21 scripts]$ free
total used free shared buffers cached
Mem: 8388608 8354400 34208 0 32748 4354904
-/+ buffers/cache: 3966748 4421860
Swap: 6257992 5816940 441052
scripts]$ sar -r

07:00:01 kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree kbswpused %swpused kbswpcad
07:10:01 15868 8372740 99.81 16348 4356644 479720 5778272 92.33 767516
07:20:01 93232 8295376 98.89 17624 4304864 433200 5824792 93.08 773240
07:30:01 29092 8359516 99.65 22664 4328688 442496 5815496 92.93 800512
07:40:01 39700 8348908 99.53 28584 4348424 441392 5816600 92.95 768592
Average: 57576 8331032 99.31 56029 4292652 349858 5908134 94.41 775742

Is their any fix to this issue with out reboot ? please any one help me on this ?

Thanks in adavance

Venkat

looks like you use oracle. probably you need to add additional swap. do you have free space somewhere?

Hi Pan
 

Hi Pan,

Thanks for your reply i checked the space only i got 500M avaliabe on this box.

I suggest you to extend your memory if possible and add new drive. Also try to check why it is used.

What happens if you restart the Oracle database?

If not oracle, you might start checking the sizes of various processes... It looks like you have a memory leak.

You should find out which processes might be responsible. Finding out which really are responsible is harder but may be required after you find out which might be:

I would use the top program. After starting it, press capital O to select the sort field, then another O to pick VIRT as the sort field, then enter.

What processes have over 100m of VIRT?

A large VIRT value does not prove the process is using a lot of swap and/or ram. There are many ways a process may have large VIRT but very small combined footprint in ram+swap. But a small VIRT does prove the process has small ram+swap. So further investigation should focus only on processes with large VIRT.