I've occasionally made the following suggestion before, although I recognize
that it implies a great deal of work: It might be a good technique to establish
a registry/pool of prepared transformations and validations in Fedora, in order
to avoid as much as possible the expensive construction of such machinery in
the course of an actual operation against the repository. Essentially this is
Steve's suggestion below ("explore caching of the prepared stylesheets") writ
very large.
---
A. Soroka
Online Library Environment
the University of Virginia Library
On Jan 25, 2012, at 10:29 AM, Stephen Bayliss wrote:
> Following the call timing test that Chris did a little while ago [1, 2] I
> have now had chance to have a quick play-around with YourKit myself.
>
> Initial results from some not-very-extensive tests confirm the findings that
> Chris made - I was seeing that the "prepare" of the stylesheet for the
> Schematron validation taking around 25% of DefaultManagement.ingest total
> time (so this is a little lower than Chris' results, but still significant).
>
> So should we just go ahead and raise an issue for this?
>
> I was planning on taking a look at FCREPO-1026 and as part of this can
> explore caching of the prepared stylesheets as it is related (and including a
> configuration option to disable Schematron validation entirely). I was also
> planning taking a look at FCREPO-1029, FCREPO-1030 and FCREPO-1031 (and
> possibly FCREPO-1027) as part of this piece of work as a lot of them are in
> the same code area.
>
> Any thoughts welcomed!
>
> Steve
>
> [1]
> https://wiki.duraspace.org/display/FCREPO/2011-11-01+-+Fedora+Committer+Meeting
> [2]
> https://wiki.duraspace.org/download/attachments/30216221/YourKitCallTimingExample.png
>
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