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SWAP Space Problem

 
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Occasional Advisor

SWAP Space Problem

Hi all,

We are using HP OVO for monitoring our HP-UX boxes. We got an alert message like Severe SWAP space shortage 91.00% The output of memory details from glance is as below,
Total VM : 44.6gb Sys Mem : 4.2gb User Mem: 17.7gb Phys Mem: 24.0gb
Active VM: 20.7gb Buf Cache: 1.2gb Free Mem: 910m
Anyone can help me to resolve this isuue?
Thnks in advance,
santhu.
6 REPLIES 6
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Honored Contributor

Re: SWAP Space Problem

u can create new device swap

in another volume group

eg: lvcreate -L 1000 /dev/vg01/lvol9
swapon /dev/vg01/lvol9
then u have to make an entry in /etc/fstab file for next reboot onwards if u need it
Highlighted
Occasional Advisor

Re: SWAP Space Problem

Hi Sahir,

Thanks for your reply. Could you please elaborate why I am facing this issue?
Thnks,
santhu
Highlighted
Honored Contributor

Re: SWAP Space Problem

post

"swapinfo -tam"
Highlighted
Honored Contributor

Re: SWAP Space Problem

swap space is the space used as a "backstore" for all "modified" memory portions of the processes running on the system. Swap space ebing low means that the system cannot possibly allow more processes to be created from now on. Also, new memory request from the already running processes could fail after a while.

To solve this, as mentioned before, add a new device to swap.

Note: Sometimes, memory leak in certain applications can also lead to this situation.
Highlighted
Honored Contributor

Re: SWAP Space Problem

You need to monitor you swap space usage manually to verify that OVO is monitoring the correct value.

Do a 'swapinfo -tam' and check all of the values. Depending on how your system is configured, the OVO policy that monitors swap space may not be working correctly.

If you have questions about your usage, post the output of 'swapinfo -tam' here so we can have a look.
Highlighted
Honored Contributor

Re: SWAP Space Problem

Dear Santhu

regarding my previous thread u asked can u give me some explanation regarding u thread
ok
can u post
echo phys_mem_pages/D | adb64 -k /stand/vmunix /dev/mem

and

swapinfo -tam

then i can tell u regarding u dought