KFilterDev changes from KDE3
kollix at aon.at
Tue Mar 17 20:31:53 GMT 2009
On Tuesday 17 March 2009, David Faure wrote:
> > Well, I know the mimetype, but as I do a backup of a _lot_ of files,
> > isn't the overhead too high to again and again calling findFilterByMimeType()
> > (as the mimetype will never change during the complete backup) ?
> KFilterBase::findFilterByMimeType only loads a mimetype from ksycoca
> (that's supposed to be really fast, just a dict lookup and a bit of deserialization)
> and compares strings. If it really turns out to be a bottleneck, we could add
> a cache in KFilterDev so that it remembers the last requested mimetype
> and the KFilterBase that was created for it (with care not to leak or double-delete
> kfilterbases...). In any case this can and should be handled internally in KFilterDev.
I now run a first test:
~18000 files processed: KDE4 3:02 Minutes, KDE3 2:12 Minutes ...
It _is_ a bottleneck, as this was just a small test.
Best regards/Schöne Grüße
Martin () ascii ribbon campaign - against html mail
/\ - against microsoft attachments
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 189 bytes
Desc: This is a digitally signed message part.
More information about the kde-core-devel