home *** CD-ROM | disk | FTP | other *** search
- >>>>> "Jeff" == Jeffrey A Halverson <jeff@Ika.umn.edu> writes:
-
- [interesting stats deleted]
-
- Jeff> What I thought was particularly interesting was that
- Jeff> calculations seem to actually speed up with AccelX also.
- Jeff> Why is this? I was expecting those to stay constant, but
- Jeff> only have the video-related tests to improve... Can anyone
- Jeff> explain this odd phenomena?
-
- Of the three primary Executor engineers, I'm the least qualified to
- answer, but since nobody else is volunteering any info, here are my
- thoughts.
-
- I'm a little surprised, too. However, the way the program works is it
- does a bunch of tests and sees how much time elapses during the test.
- *During* the test speedometer does a little bit of graphics in that it
- changes the cursor. In addition, there are some fancy graphics done
- right before and right after the test and buffering may cause these to
- also affect the times. Furthermore, depending on how much memory you
- have, there could be paging that could affect things.
-
- I don't know how much memory you have, but I'd guess paging and if not
- paging, context switching overhead. It could be that XFree requires
- many more context switches even when idle than AccelX.
-
- Cotton might know.
-
- Jeff> Jeff
-
- --Cliff
- ctm@ardi.com
-
-