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Old 07-30-2020, 09:12 PM   #1
pop123
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Registered: Jul 2020
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pstack output analysis


Hello Linux Experts,

How to use pstack to identify hanging threads.Can someone please help me with some examples.I am new to Linux

Thanks.
 
Old 08-03-2020, 04:35 AM   #2
JJJCR
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Registered: Apr 2010
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Hi Pop123, welcome to LQ.

Check out links below might help:
https://docs.oracle.com/cd/E19120-01...-40/index.html

https://unix.stackexchange.com/quest...stuck-in-linux

Oracle docs says:
Quote:
The example shows that the process is waiting for a new connection request, which is a normal response. If the stack shows that the process is still in poll after a request is made, the process might be hung.
So, i guess you need to check the output which has "poll" on it and it might be hung as docs says.

Example below from this link:
fea9da3c poll (fac01a08, 1, 1f4)
feafa8dc poll (1, ffffffff, fac01a08, 1, 670e3849, 1f4) + 34
 
  


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