Hi,

I have installed Oracle Enterprise Linux 6.1 for SAS Visual Analytics.

The Server have 1TB HD and 284GB of RAM and 512GB of Swap Size.

Very recently my users getting performance issues in SAS Visual Analytics Reports. As of now there are only three users accessing this server.

I have checked the servers 'System Monitor' (Graphical Tool) the CPU History graphs very much busy and 'Memory and Swap History' graphs are not moved a single bit. I mean there is no history.

Also, in the application side, there is no task done from the users either from the developers.

I could not able to identify the issue.

Kindly some one help me Immediately.

Thanks in Advance,
Hameed

On what do you base your conclusion that "Swap memory is not working" ??

From the very limited amount of information you provided, I would guess you massively over configured memory and your users' tasks need only a tiny fraction of that memory.

They may expect better performance than they can get (for the CPU work required by those tasks) or you might have something configured incorrectly to make the CPU less effective. But memory does not seem to be a factor.

Are the numbers you gave correct? In what possible application could 284GB of ram be appropriate, but you can manage with just 1TB of hard drive and waste half of that on swap space?? If your numbers are correct, I expect you followed some ancient (and even back then incorrect) "rule of thumb" for making swap space roughly double ram. I can imagine applications in which 284GB of ram with 500GB of swap space makes sense, but I'd give pretty long odds that you are not managing such an application. Get rid of most of that swap space. It won't fix whatever problem you think you're having, but it is a correct thing to do.

Hi, its a massive application which is going to be a production, presently most of the development done in this server. we having a test server which is running on VM server with very less amount of configuration but from there the application works fine.

In SAS Visual Analytic server, all the inputs will be stored in the RAM to give a result for the users that is the reason we were given very large memory in use.

Help me to identify the issue from OS level.

Regards,
Hameed

Linux uses swap only when it needs to use swap.

If the available RAM is enough, swap will show no usage. You can use the free command for a snapshot of memory usage.

See if swap is really activated?

Also can look more into it. I think this is the correct info. https://access.redhat.com/documentat...and_Usage.html

Yes, examine free and see if you're actually using much of anything. You have way more memory than you need.

And output would be nice?

What's the output of...

Or when you define it.

http://askubuntu.com/questions/10391...ure-swappiness

I know this firsthand, I had to deal with it yesterday: why a machine with 8GB of RAM, only using 4GB, is swapping insanely.

https://support.sas.com/documentation/onlinedoc/va/

There is an installation guide (requires a user id/passwd), have you read that?

Typically those guides have minimum requirements for hardware, hard disk space, memory, and swap, in order for the application to run correctly.