MBP hangs

my mbp hangs after awhile , cant except shut off. how can know whats goin on?

thks

 

check console hints.

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have @ activity monitor (applications / utilities /) , select all processes , sort cpu see culprit may be.
check "system memory" tab see "page ins:", "page outs:" , "swap used:" are.

image below uses sorting cpu example

further reading:

mac os x: reading system memory usage in activity monitor
making of activity monitor
what activity monitor (or how take mac's pulse)​

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"how maximise macrumors troubleshooting experience" created mad jew in 2006​

 

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