Snapshot speed on managing files
Wed Jan 17 15:32:00 GMT 2007
To clarify a few things...
On Tue, 16 Jan 2007, Larry Hall (Cygwin) wrote:
> Brian Ford wrote:
> > A quick look via Filemon doesn't show where the time is going. But since
> > I don't regularly run this way, I'm not that interested in pursuing this
> > further.
This statement was with respect to "Virus Scan Enterprise 8.0.0 On Access
Scan Disabled" before Corinna's patch. I did not test after her patch
because, as I said, I wasn't that interested in this (the OPs original)
> > I regularly delete 100,000 files at a time under 1.5.18, and the rm return
> > is rather snappy. About two weeks ago I was cleaning space of my drive
> > under a then current CVS build with On Access Scan enabled (before my 64k
> > I/O change, although I don't think that's relevant), and deleting a few
> > thousand files was very slow comparatively. So, I presumed I had seen the
> > problem.
> > Since I can't duplicate this observation now, I'm sorry for the wasted
> > effort.
> Did you update your build recently?
This observation was before her patch, and my attempt to reproduce it was
also pre-patch. So, no.
> Corinna checked in a fix for this on Saturday
My point was that her statements about her patch bringing only a
marginal performance increase, and the original code not being horribly
inefficient, appear correct despite my previous qualitative observation.
Lead Realtime Software Engineer
VITAL - Visual Simulation Systems
the best safety device in any aircraft is a well-trained crew...
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