Memory Usage history for last week

[newchaptolinux]

Hi,

My manager has asked me to look at memory drop on system while I was doing test on Linux machine. there is a big dip in memory graph produced by another tool. I do not know which processes were responsible for those memory dips. Is there any way I can find memory utilization of process during last week?

Many thanks in Advance

[atreyu]

Very unlikely, unless you already set something up to do that (cron, daemon, etc.). You can peek in /var/log/messages for any possible incidents that occured in the time frame you're interested in that might indicate a memory issue, but don't hold your breath.

You can cobble together a quick memory usage test that you can cron, though. Making a cronjob of something like "top -n1 -c -b >> /tmp/memusage.log" would be a start.

Also check out htop, which allows you to sort by mem from the cmd line (which would be good for a cronjob, vs interactive), e.g.: "htop --sort-key PERCENT_MEM"