Re: scheduler problems on AIX4.1

[Matti Aarnio <mea@nic.funet.fi>]

> I'm having problems with the zmailer-2.99.26 scheduler (on AIX 4.1.4).
> The scheduler hangs and keeps it's children pending forever. The
> effect is that messages are not passed to the transport agents, mailq
> hangs etc. Anyone got a clue?

	Do you have a syscall tracer for AIX ?  (like  "strace" on Linux,
	"truss" on Solaris, "trace" at SunOS 4.x, etc..)

> Running the scheduler in verbose mode gives this:
> .
> .
> .
....
> sig_chld() pid=13182, ok=1, stat=0x100
> sig_chld() pid=24950, ok=1, stat=0x4b00
> 
> And thereafter nothing more, and no way to contact the scheduler without
> restarting it.

	I suspect of  wait()/waitpid()  code, which version
	is applicable for AIX so that it is non-blocking ?

	Indeed..  Add following into your  hostenv/AIX4.1:

		WAITPID=

	then recompile all..  (This is already in my upcoming ..27
	source set.)

> -- 
> E-Mail: Martin.Wendel@ITS.UU.SE        Snail-Mail:  ITS
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	/Matti Aarnio <mea@nic.funet.fi>