LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
September 2004
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
Thread
2004.09.24 21:58 "Re: 3.7 vs. 3.6.1 performance hit", by Andrey Kiselev
On Thu, Sep 23, 2004 at 01:41:31PM -0400, Larry Grill wrote: > I'm seeing a large performance hit with 3.7b vs. 3.6.1 compiled under > MS VC7 or VC6. Our the code section loops through rows doing, > TIFFReadEncodedStrip and TIFFWriteScanline. The perfomance difference > is approximately 30% and I can compare with a simple recompile of our > application linking one version of the library vs. the other. Larry, I think I know why the new libtiff is slower than the older one. I have implemented a new feature (update compressed files in place), but this results in perfomance degradation. I know how to improve things, so the fix will come shortly. Andrey -- Andrey V. Kiselev Home phone: +7 812 5274898 ICQ# 26871517