Optimizing ExifTool Performance

[Jeff Harmon]

I was curious whether or not we were following best practices with
ExifTool?

http://owl.phy.queensu.ca/~phil/exiftool/#performance

http://www.christian-etter.de/?p=458

It seems there are marked differences in performance related to the
structuring of commands. Anyone closed to the code who can comment?

-Jeff

[Jeff Harmon]

I see that some users reported 60x speed improvements using some
methods. Wow, could any of these approaches make a huge difference
for us?

- Jeff

[Daniel Westerling]

Any news on this? :)

[Tom Gleason]

Exiftool is in no way a bottleneck for RS. Also I don't think any of these ideas would apply since we don't mass process metadata.

On Jan 2, 2011 7:31 PM, "Daniel Westerling" <Dan...@b-rudar.se> wrote:
> Any news on this? :)
>

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[Jeff Harmon]

I don't understand your reply, Tom. Can you explain what's on your
mind more?

-Jeff

On Jan 2, 4:45 pm, Tom Gleason <theorysav...@gmail.com> wrote:
> Exiftool is in no way a bottleneck for RS. Also I don't think any of these
> ideas would apply since we don't mass process metadata.
> On Jan 2, 2011 7:31 PM, "Daniel Westerling" <Dan...@b-rudar.se> wrote:> Any news on this? :)
>
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[Tom Gleason]

Exiftool is the fastest part of the download process. It runs almost
instantaneously.
The batch methods wouldn't apply since all resources have different metadata.

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--
Tom Gleason, PHP Developer
DBA Impressive Design

Exploring ResourceSpace at:
http://resourcespace.blogspot.com

[Jeff Harmon]

thx. what about process management?

"Also, the -execute option may be used to perform multiple independent
operations with a single invocation of exiftool, and together with the
-stay_open option provides a method for calling applications to avoid
this startup overhead."

a lot of a little adds up...

- J

On Jan 3, 5:25 am, Tom Gleason <theorysav...@gmail.com> wrote:
> Exiftool is the fastest part of the download process. It runs almost
> instantaneously.
> The batch methods wouldn't apply since all resources have different metadata.
>
>
>
> On Mon, Jan 3, 2011 at 6:09 AM, Jeff Harmon <jeffreyhhar...@gmail.com> wrote:
> > I don't understand your reply, Tom.  Can you explain what's on your
> > mind more?
>
> > -Jeff
>
> > On Jan 2, 4:45 pm, Tom Gleason <theorysav...@gmail.com> wrote:
> >> Exiftool is in no way a bottleneck for RS. Also I don't think any of these
> >> ideas would apply since we don't mass process metadata.
> >> On Jan 2, 2011 7:31 PM, "Daniel Westerling" <Dan...@b-rudar.se> wrote:> Any news on this? :)
>
> >> > --
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> >> > To unsubscribe from this group, send email to
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>
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[Jeff Harmon]

"disable... the print conversions (-n) if these features aren't
required"

since we provide the field names, i presume omitting the print
conversions might be ok?

- J

[Tom Gleason]

The point is that exiftool never takes more than a second to read or
write metadata...previewing, copying,transferring files all eclipse
this.

When looking to do optimization, we should focus on actual
bottlenecks. Exiftool isn't one at all.

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[Jeff Harmon]

maybe we'll circle back to this sometime later. thanks, tom.

- J