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Re: Parallel delivery rates?
On Thu, Aug 02, 2001 at 10:49:17PM -0700, Michael Loftis wrote:
> OK I've noticed that zmailer tends to only get up one delivery thread
> per domain... What exactly controls this behavious? I've tried
> danged-near everything under the sun to up those limits (I have managed
> to apparently get slightly more deliveries going in parallel on the
> average though which does help)...
It somewhat depends on the version -- very early versions (2.2.*)
do schedule parallel threads, their scheduling model is different.
The "parallel threads" support has existed in the new one for about
three years (since 1998, I think), although even I haven't used it
all that much having no usual need for it.
Have you read the initial (lengthty) comments in the beginning
of the boilerplate scheduler.conf(.in) file ?
There I try to illuminate the relationship of the different control
> Really it seems that only one process (ta?) is delivering to a
> host/domain. The manual is never really clean and clear on the whole
> thread, process, job, channel relations....
Which of the manuals ? The big bulky SGML/HTML thing ?
The scheduler.8, or something else ? (Of which version of ZMailer ?)
It is entirely possible that I haven't gotten around to rewrite the
texts about scheduling in the Manual.
In the scheduler.8 there is this detail:
This limits the number of parallel transport agents
within each thread; that is, using higher value
than default ``1'' will allow running more than one
TA for the jobs at the thread.
Do note that running more than one TA in parallel
may also require lowering OVERFEED value. (E.g.
having a queue of 30 messages will not benefit from
more TAs, unless they all get something to process.
Having OVERFEED per default at 150 will essentially
feed whole queue to one TA, others are not getting
> Any help?
/Matti Aarnio <firstname.lastname@example.org>
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