Reply To: Process Hang Issue

I got this documentation out of a IBM website:

AIXTHREAD_MNRATIO (AIX 4.3 and later) Purpose: Controls the scaling factor of the library. This ratio is used when creating and terminating pthreads.

Values: Default: 8:1

Range: Two positive values (p:k), where k is the number of kernel threads that should be employed to handle p runnable pthreads

Display: echo $AIXTHREAD_MNRATIO (this is turned on internally, so the initial default value will not be seen with the echo command)

Change: AIXTHREAD_MNRATIO=p:kexport AIXTHREAD_MNRATIOChange takes effect immediately in this shell. Change is effective until logging out of this shell. Permanent change is made by adding AIXTHREAD_MNRATIO=p:k command to the /etc/environment file.

Diagnosis: N/A

Tuning: May be useful for applications with a very large number of threads. However, always test a ratio of 1:1 because it may provide for better performance.

Does Quovadx recommend setting the ratio to be 1:1 even if we don’t show any problems?