Memory usage

The_JinJ · 11-09-2007, 11:39 AM

Just a quickie.....

When I look at memory usage using

Code:

free -m

I can see:

Total: 503
Used: 150
Free: 352
Shared: 0
Buffers: 4
Cached: 133

This is purely a text based install with nothing running - am I right in thinking that the actual amout of RAM free is FREE + BUFFERS + CACHED? = 489Mb

Lenard · 11-09-2007, 12:05 PM

Nope, USED+FREE (150+352=502)

knockout_artist · 11-09-2007, 12:11 PM

cashed is one on cpu chip it self.

Your system have privilege to use it only.
I think.

mrrangerman · 11-09-2007, 12:12 PM

I believe when it says free thats what it means, in your case you have 352mb of free memory. The Buffers: 4 Cached: 133 is a brake down of the Used: 150

You can also take a look at the top command or vmstat and get a idea of memory usage.

knockout_artist · 11-09-2007, 12:12 PM

Quote:

Originally Posted by Lenard

Nope, USED+FREE (150+352=502)

yes, dont get too exited. hehe you only have what you paid for.
just kidding.

The_JinJ · 11-09-2007, 12:14 PM

Worded that wrongly - how do i see how much is actually being used by processes? There is nothing running using 150mb! This is a bare bones install

PMorph · 11-09-2007, 02:16 PM

As for what is available for applications to use, you can sum up the "free" and "cached", at least.
Portions from "cached" will be handed over to applications if you're getting low on "free".

Tinkster · 11-09-2007, 03:18 PM

Quote:

Originally Posted by The_JinJ

Worded that wrongly - how do i see how much is actually being used by processes? There is nothing running using 150mb! This is a bare bones install

Code:

ps aux| awk ' $6 ~ /[0-9]+/ {total+=$5} END{print total/1024}'

That adds up the resident memory sizes of processes.

Cheers,
Tink