Activity Monitor lets me see how much memory is allocated as "wired", but I can't find a way to break the allocation down by applications or other memory consumers.
Is there a tool out there that lets me get this information?
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I found a webpage which has this definition for wired memory:
Wired memory is used by the OS and is pretty much untouchable. Another application can't "borrow" wired memory
If you want to know more about how applications and frameworks are using memory on your system, try
/usr/bin/allmemory. You must run it as root;
sudo /usr/bin/allmemory is one way to accomplish that. When you run it, it will perform analysis for several seconds before showing output.
Here is a short example of the output:
Process Name [ PID] Architecture PrivateRes/NoSpec Copied Dirty Swapped Shared/NoSpec =================== ============ ================= ========= ========= ========= ============= WebProcess [ 317]: 64-bit 74126 / 73588 2102 48868 403 32777 / 30757 Xcode [ 368]: 64-bit 55780 / 55711 25228 45570 595 43660 / 41720 Safari [ 315]: 64-bit 25087 / 25087 2251 17647 52 35197 / 33513
See the allmemory man page (with the command
man allmemory) for more details; here's an explanation of some of the columns:
PrivateRes: the number of pages resident in physical memory, not shared with other processes
Copied/Dirty: the number of resident pages that were copied or are dirty (non-exclusive)
Swapped: the number of pages that were in memory but have been swapped to disk.
Shared: the number of shared pages