How to free up inactive memory?

VM size has absolutely nothing to do with hard drive space. if you don't know what it is, don't worry about it.

and there really is no point in freeing up inactive memory. all it is is recently used ram for programs. if you use that program again it will load from ram. its still free for use for other applications if need be.

 

Run the following command in Terminal:

purge

That should free up all inactive memory.

 

inactive ram is free ram if you really anal about moving in back to the Free Ram total an app like Free Memory would do that but again its pointless

 

Close some apps already, looks like you have everything running at once... The inactive memory is memory that isn't currently being used, but it from apps that were recently closed. This is why when you first turn on your computer and open an app, it may take a second or so to open. If you quit the application, wait a few seconds, then open it again, it opens almost immediately. If you were to start opening more applications right now, OSX is smart enough to eliminate some of the inactive memory for the new application before it will start paging files on your hard drive. However, it looks like you barely have any free memory left, which may cause some paging to happen.
..But like one of the previous posts said, if you wish to free all inactive memory, the purge command works fine.

 

It actually isn't pointless. ML handles inactive ram better than Lion did. But when Lion first came out I had many occasions where I would have like 200MB free and several GB in inactive and the entire system would crawl until I ran purge.

ML seems to not have this problem, thankfully. But it was an issue.

 

Yep.

Something *was* broken in both SL and Lion with memory management.

However, it's fixed now in ML. Typically in SL and Lion I'd have to take some action (usually rebooting) to stop the swapping/beachballing every 4-5-6 days. Even with high amounts of free/inactive memory and no apps running I'd get pageouts.

At this point with ML I've been running for a solid 2 weeks w/o a single pageout - and obviously I've not needed to reboot to reclaim/restart memory.

 

What a stupid bit of advice! He is not worrying, he is taking an interest and asking for help.

People moan that others come to this forum asking questions - but when you give a rubbish response like that, then no one will learn and this forum becomes pointless, like your comment.

 

I use a program called FreeMemory. It's free (extras can be unlocked for $0.99), and can be bought it in the App Store. Sits in the Taskbar, and when I need extra memory (for example, when I have VMWare open), or when I feel it like it, I just click on the current RAM Free, then choose 'Free Memory'

 

I agree with everyone.
SL and Lion had something missing on free RAMs.
It wasn't somehow right.

But in ML, it handles them better.
I just restart my Mac once in a while.