[PATCH] KIO::SlaveBase and the event loop

Thiago Macieira thiago at kde.org
Tue Jul 22 11:12:58 BST 2008

On Tuesday 22 July 2008 12:07:22 Roland Harnau wrote:
> 2008/7/21, David Faure <faure at kde.org>:
> > On Wednesday 16 July 2008, Roland Harnau wrote:
> >> Some  logic may help: If starting 20 http slaves is a "problem"
> >> because it takes ~2.6 seconds, than it is especially a "problem" if
> >> Konqueror starts 20 http slaves during webpage loading, since
> >> KIO::Slave::createSlave is the way used by KIO (and hence by
> >> Konqueror) to create new IO slaves. And Konqueror/KIO launches in fact
> >> over 20 http slaves at some sites. The conclusion is simply an
> >> application of modus ponens.
> >
> > The planned fix for this is HTTP pipelining support.
> Provided that all servers support HTTP/1.1. It should be sufficient if
> KIO would make better use of persistent connections, e.g. set a
> maximum number of simultaneous connections per host and queue
> requests/jobs accordingly.

Given KIO's distributed nature, that's only doable per application. I.e., the 
application can control how many slaves it creates for each 
host-port-protocol combination (inside libkio).

But two applications running in parallel will still use each the limit. This 
includes Konqueror.

  Thiago Macieira  -  thiago (AT) macieira.info - thiago (AT) kde.org
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