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List:       kde-core-devel
Subject:    Re: kio multithreading
From:       Tobias Anton <TA () ESC-Electronics ! de>
Date:       2001-01-03 11:55:44
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On Saturday 30 December 2000 04:07, Waldo Bastian wrote:
> On Friday 29 December 2000 16:27, Thomas wrote:
> > When downloading lots of files I seem to be unable to start more then 5
> > download instances. When I click on a 6th I see a spinning gear until
> > another stops and then it immidiately pops-up.
> >
> > Is there a hard-coded maximum ??
>
> Yes and this is a design problem. The kio scheduler is able to schedule
> slaves to jobs. This works nice, e.g. you can create 50 jobs and then the
> scheduler will allocate 5 slaves that will handle these jobs.
>
> The problem starts when you have 5 long-lasting downloads going. The
> scheduler will not create more slaves but waits for one of the slaves that
> are busy to finish first.
>
> I can fix that problem by lifting the limit of 5, essentially putting the
> scheduler out of business, but that creates problems when you e.g.
> recursively copy a directory-tree, because then you suddenly get 200 slaves
> or so.
>
> So if anyone has an idea how to solve this I'm interested to hear it.

Scheduling should be done for slaves bound to applications only,
while background downloads and their slaves should not be handled by the 
scheduler at all and should not count towards the limit of 5 slaves, and be 
put into the unlimited pool...

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