Emergency UNIX and Linux Support

Hi,

My application runs on AIX, and clients complain of 3am slowdowns. This seems to have increased in the recent past.
Can someone guide me what are the various things that I need to be looking at on he AIX box, that could be causing slowdowns.

Thanks in Advance.

Have them define "slowdowns" more precisely: is the application itself slow, or are you experiencing a high load too. Check for any jobs that are planned to run at 3am: backups, cron jobs, database jobs, clean-ups, some kind of data transfer.

You can also involve your network team to see if there is high traffic between any timings as you mentioned. We experienced the same issue once and some of the it is being caused by some improper N/W activity by some clients. This can be checked just to make sure.

Regards,

Ravi

On getting back to the users, they say, by slow response, it means, when they try to launch a screen, loading of the screen is very slow, and also, when data is trying to be fetched into the screen, that is also very slow. Sometimes, it appears that the application hangs. Network has been checked, and there seems to be no issues there.
Also, no cron jobs run at that time.
Are there any commands that can be run to check what is causing the slow response?
Please help

If the clients are PCs, it is possible that this is something like a virus scan or virus DAT updates ... or both. Worth checking a sample PC wth Windows Task Manager to see what is running when the connection is slow. Compare with Windows Task Manager when it is not slow. Key metrics are CPU usage and Memory usage.