![]() This is a good way to see which applications are using the most memory on your. Click the Real Mem column header to sort the active processes by memory usage. (It’s in Applications Utilities.) The window shown below appears. I haven't told you exactly what is using your mac's memory, but these tools will help you discover. Here’s how to use Activity Monitor to monitor your Mac’s memory usage: Open the Activity Monitor application. Founded in 1987, ECS, the Elitegroup Computer Systems, is a top-notch manufacturer and supplier of several families of computer products in the industry. String together a bunch more to see the sum of all processes: $ ps -axm -o "rss,comm" | awk 'BEGIN ' I'll stick to the command line a little longer So, you can check your Macs RAM usage first. That output is formatted well enough that you could throw it into a spreadsheet to analysis if you like analyzing things that way. Sometimes, your Mac runs slowly due to other reasons like incompatibility software rather short of memory. Memory Pressure: The Memory Pressure graph helps illustrate the availability of memory resources. The RSS column is expressed as 1024 byte blocks. It's no shock to me that these are at the top (and the Chrome process shown is just one of a bunch). Here's the first few lines I see: RSS COMMĢ10256 /Applications/Firefox.app/Contents/MacOS/firefox-binġ58276 /Applications/Google Chrome.app/Contents/MacOS/Google Chromeġ55360 /Applications/iTunes.app/Contents/MacOS/iTunes m sorts output by memory usage, -a shows all users' processes, -x shows processes not associated with a terminal (i.e. Using ps and other command line tools, you can drill deeper into this.įirst, use options to ps to limit what is shown to just resident memory and the name of the command. Under Linux there is some information under "/proc" available, afaik.Įven though no single process has high memory usage, there are still lots of processes running - that all adds up. Personally I think it would be interesting to be able to see "more" about the memory management status. Maybe a driver (although I don't have any kernel extensions installed - checked with kextstat). This feels like a memory leak somewhere in the OS. I have Instruments installed, but since this does happen over a span of a few hours, it is difficult to use Instruments. I'm not sure where the rest of the 2.55 GB is gone or where it is allocated. It shows an active memory usage of 2.55 GB system wide, but only a 1.55 GB memory usage which the ps command calculates. Thanks to Doug Harris' answer I made this screenshot. That from the icon in the Apple menu bar or from the Notification widget in your sidebar. Now I'm wondering what is actually holding on to the memory? top and Activity Monitor don't report any processes with a high memory usage. See real-time how much memory you have free on your Mac computer. It’s easy to keep an eye on your system status without even looking at the Activity Monitor windowyou can monitor your CPU, network, or disk usage as a live graph right in the Dock. There are no more processes or applications to quit. So the first thing I did was quitting all applications and killing all processes that don't seem to belong to Mac OS X.Īfter I did that, my active memory came down about 400 MB, but got stuck at what you see in the screenshot. ![]() But after a few hours it looks like this:Īs you can see, in this case it's about 4.3 GB.īeing a developer, I know that 'active memory' is the amount of memory that is currently used by running processes. Whenever I reboot my Mac, everything looks fine and it is hardly using any RAM. I'm not familiar with the internal workings of Steam, but looking over the NSDistributedNotificationCenter reference (), my guess is that steam is either repeatedly calling - addObserver: or is posting notifications faster than the observers are consuming them.I'm using a recent MacBook Pro with 8 GB of RAM and after a few hours of using it at work I notice the amount of 'active' memory growing and growing. These lines do not appear nearly as frequently if I quit Steam. Running the terminal command sudo dtruss -p while Steam is running displays about a dozen lines per second which mostly look like: Since I've been leaving Steam running in the background, this adds up over a few days to gigabytes of memory, eating up both physical memory and eventually swap space. In particular, as long as Steam is running on my computer, the distnoted process (the distributed notification daemon) leaks a few kilobytes of memory per second. ![]() I've been noticing over the last few weeks that something keeps consuming my hard disk space and after a bit of digging it appears I have come across the (or at least a) culprit: Steam.
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