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10.9: Run sysdiagnose with keyboard shortcut System 10.9
The command-line utility sysdiagnose can be triggered by pressing Cmd+Opt+Ctrl+Shift+Period, and it may take a few minutes to complete. When ready, the output will automatically be revealed in a Finder window (or it can be manually retrieved from /var/tmp).

What sysdiagnose Collects:
  • A spindump of the system
  • Several seconds of fs_usage ouput
  • Several seconds of top output
  • Data about kernel zones
  • Status of loaded kernel extensions
  • Resident memory usage of user processes
  • All system logs, kernel logs, opendirectory log, windowserver log, and log of power management events
  • A System Profiler report
  • All spin and crash reports
  • Disk usage information
  • I/O Kit registry information
  • Network status
  • If a specific process is supplied as an argument: list of malloc-allocated buffers in the process's heap is collected
  • If a specific process is supplied as an argument: data about unreferenced malloc buffers in the process's memory is collected
  • If a specific process is supplied as an argument: data about the virtual memory regions allocated in the process
The man page for sysdiagnose can be found here.

[crarko adds: This seems to be primarily intended for software developers as a debugging aid, but I can see it useful for system troubleshooting at a low level as well. I tried it and found the output (text) file in /var/tmp, as mentioned above.]
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10.9: Run sysdiagnose with keyboard shortcut | 5 comments | Create New Account
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10.9: Run sysdiagnose with keyboard shortcut
Authored by: mkuron on Mar 24, '14 07:22:48AM
Also works in 10.8. The manpage of sysdiagnose says:
sysdiagnose can be triggered upon pressing a special key chord; this is currently Control-Option-Command-Shift-Period.


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10.9: Run sysdiagnose with keyboard shortcut
Authored by: redfood on Mar 24, '14 08:25:38AM

Nothing happen when I press the keys.



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10.9: Run sysdiagnose with keyboard shortcut
Authored by: alexiskai on Mar 24, '14 08:26:37AM

You have to wait a bit. It runs in the background.



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10.9: Run sysdiagnose with keyboard shortcut
Authored by: redfood on Mar 24, '14 09:12:36AM

Thanks, I was just about to post a followup. No feedback at all until it is done.



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10.9: Run sysdiagnose with keyboard shortcut
Authored by: alexiskai on Mar 24, '14 08:25:39AM

Also works in 10.7.



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