Consider this excerpt from an
onstat -g lmx output...
Locked mutexes:
mid addr name holder lkcnt waiter waittime
-824449722 10509f7f9b8 pt_40efa1 1592045984 0
Does anybody know what the hex number after the
pt_ in the mutex name relates to? I have not been able to find this detail in any manuals.
I found this on the old IIUG forum site...
"
pt__ are locks on the partition. Normally that means that threads are expanding a tablespace."
...but I want to be able to identify the object that is at the root of the mutex contention. My understanding is that mutex lock contention happens when session threads are trying to initialise the same structure in memory that is already being referenced by another session and thus are put to sleep.
Any assistance would be appreciated.
Platform...
Linux ******* 2.6.32-754.17.1.el6.x86_64 #1 SMP Thu Jun 20 11:47:12 EDT 2019 x86_64 x86_64 x86_64 GNU/Linux
IBM Informix Dynamic Server Version 11.70.FC7XOB4 -- On-Line -- Up 219 days 13:12:30 -- 799279104 Kbytes
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Kirit Rana
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#Informix