How to find max usage RAM on Centos 7

yokowasis

I am currently using google cloud. As we all know we can just tweak the specs on the fly without the needed to reinstall all the stuff again. It's very useful for testing environment.

I want to know, how much my MAX RAM USAGE. Because the RAM usage is fluctuate over time, hence the free command is not suitable for this.

I am now deploying 16GB of RAM VM. it is obviously very BIG, and most of the resources will go to waste.

What's the best way to find out how much RAM do I really need ? 2GB, 4 GB ? 8GB ?

Since I can't obviously monitor my server all the time, I want to know what is the HIGHEST RAM USAGE ever recorded.

Thanks.

WSS

stick your penis into it.

yokowasis

Yeah right. That would be helpful.

WSS

Try it. It'd take care of all of your problems.

imok

Use Nixstats

yokowasis

@WSS said:
Try it. It'd take care of all of your problems.

Yeah the thing is, When I tell the Google Data Center Security that I would like to put my dick on their server, they will kick me out. So yeah, although that is a good idea, that's a no go.

WSS

@yokowasis said:

@WSS said:
Try it. It'd take care of all of your problems.

Yeah the thing is, When I tell the Google Data Center Security that I would like to put my dick on their server, they will kick me out. So yeah, although that is a good idea, that's a no go.

Just tell them you're YouTube from 12 months ago. You'll be rolling in the dough.

yokowasis

@imok said:
Use Nixstats

Thanks, that's neat.

eva2000

most linux distros have sar collecting system resource statistics over time, you can look up past collected stats easily i.e. memory and disk swap usage http://www.thegeekstuff.com/2011/03/sar-examples/

example show yesterdays memory usage stats

 sar -r -f /var/log/sa/sa$(date +%d -d yesterday)