[ome-devel] bio-formats slow under WIndows

[Johannes Schindelin]

Hi,

On Fri, 7 Oct 2011, Melissa Linkert wrote:

> > Once more by using bio-formats I address you up with a performance 
> > question. Maybe the answer is obvious for you people, but not for me. 
> > It could also be an issue.
> > 
> > Bioformats is much slower on Windows than on Linux. Could that be? I 
> > am having this for long time.
> > 
> > Same (local) files, same loci_tools.jar and 
> > loci.formats.tools.ImageConverter give 4x slower rates on windows. 
> > Does it have to do with java interpreter. Does it have to do with the 
> > filesystem?
> > 
> > -Xmx512m was the only argumet used (no compression).
> 
> Hmm.  I do see a performance difference when converting a small ScanR 
> dataset, but the cause of the difference is not obvious.

One wild guess from me: if there are a lot of disk accesses, that could 
explain it; Windows does not buffer as well as Linux (because Linux is 
tuned for it).

Ciao,
Johannes