(Also at https://github.com/urbancoding/jenx/issues/32)
Don't freak out too much if 64-bit processes on OS X have a VSIZE of 10 GB or more.
This will rename the disc image, so don't panic that ‘installergoeshere' has vanished. Now, detach the image from our MacOS. You can just eject it like regular DMGs. If not, run the command: hdiutil detach /Volumes/OS X Base System (it may change since OS X is legacy. To check, run ls /Volumes and see if it's there, renamed). If you don't know what newsgroups are, you probably don't need this program. Mac OS X 10.9, Mac OS X 10.6, Mac OS X 10.10, Mac OS X 10.8, Mac OS X 10.7. Additional Requirements None. A comprehensive list of companies available on stock exchanges that can be browsed alphabetically, by sector, or by country.
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What this shows is a ridiculously simple Ruby program (running under MacRuby) having a VSIZE of 10 GB.
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Glow air hockey mac os. OTOH, Activity Monitor shows up a much more sane 'Virtual Mem' of 315.0 MB for this process:
Million ant moving company mac os. Also, vmmap seems to indicate that most of the virtual memory comes from 'reserved VM address space (unallocated)' and it seems to consider this as unimportant:
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Glow air hockey mac os. OTOH, Activity Monitor shows up a much more sane 'Virtual Mem' of 315.0 MB for this process:
Million ant moving company mac os. Also, vmmap seems to indicate that most of the virtual memory comes from 'reserved VM address space (unallocated)' and it seems to consider this as unimportant:
This issue, by the way, is not specific to MacRuby (my initial suspicion). I saw a similar pattern with Xcode, which also has a VSIZE of around 11 GB. I did not see this pattern with MRI Ruby [ruby 1.9.3p0 (2011-10-30 revision 33570)], Mail.app, Finder, iTerm, Alfred, Safari, or mysqld — these apps all have a much lower VSIZE of around 3 or 4 GB each. I have no idea why.
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OS X appears to 'reserve' a large amount of virtual memory for 64-bit processes, but they are not necessarily using it just because it's been reserved for them.
