Sorry about the delay in getting this summary out. My original question
was:
> I'm running Tru64 Unix v4.0D, patch kit 3, on a 233 MHz ev4 device with
> (only) 64 MBytes of physical memory. I recently downloaded and installed
> the latest version of Adobe Acrobat Reader from Adobe's web site. The
> program appears to work, but it is slow to the point of being unusable. In
> particular it takes a long time (20 to 30 seconds) to render a page of
> text on the display.
> During the time Acrobat Reader is working, CPU usage is near 100% (as
> reported by top). Memory usage does not seem excessive (again using top).
> I have observed this effect using both XFree86 on a Linux system and
> StarNet's X-Win32 on a fast Pentium III system as X servers. At the same
> time I downloaded the latest Acrobat Reader for Linux and installed that
> on a 200 MHz Pentium system with 128 MBytes of RAM. It runs FAR faster
> and, in fact, works just fine.
>
> Is there something odd about the way Acrobat Reader works on Tru64 Unix
> that causes it to consume an unreasonable amount of processor time? What
> should I be looking at to identify the cause of this problem more
> precisely? Right now Acrobat Reader is unusable on my Tru64 system and I'd
> like to fix that if possible.
I got responses from:
Joe Fletcher <joe_at_meng.ucl.ac.uk>
Petrie L M <lmp_at_ornl.gov>
Olle Eriksson <olle_at_cb.uu.se>
Stephen Dowdy <dowdy_at_cs.colorado.edu>
alan_at_nabeth.cxo.dec.com
Ken Block USG <block_at_zk3.dec.com>
The concensus is that Acrobate 4 was compiled to use the EV5 processor.
On an EV4 device such as what I have, the extra EV5 instructions must be
emulated. The result is a signifcant performance hit. Here were the
suggested workarounds/fixes:
1. Fall back to Acrobat reader v3. Apparently it does not have this
problem.
2. Use xpdf (
http://www.foolabs.com/xpdf). The latest version
understands PDF v1.3 and is quite quick.
3. Complain to Adobe (in addition to one of the other options above).
Thanks for the input!
Peter
Received on Tue Mar 07 2000 - 19:34:19 NZDT