Re: More ULE bugs fixed.

> I think you cvsup'd at a bad time.  I fixed a bug that would have
> caused the system to lock up in this case late last night.  On my
> system it freezes for a few seconds and then returns.  I can stop
> that by turning down the interactivity threshold.

Hrm, I must concur that while ULE seems a tad snappier on the
responsiveness end, it seems to be lacking in terms of real world
performance compared to 4BSD.

Fresh CVSup (~midnight 2003-10-17) and build with a benchmark from
before and after.  I was "benchmarking" a chump calc program using
bison vs. lemon earlier today under 4BSD
(http://groups.yahoo.com/group/sqlite/message/5506) and figured I'd
throw my hat in on the subject with some relative numbers.  System
time is down for ULE, but user and real are up.


Under ULE:

Running a dry run with bison calc...done.
Running 1st run with bison calc... 52.11 real 45.63 user 0.56 sys
Running 2nd run with bison calc... 52.16 real 45.52 user 0.69 sys
Running 3rd run with bison calc... 51.80 real 45.32 user 0.87 sys

Running a dry run with lemon calc...done.
Running 1st run with lemon calc... 129.69 real 117.91 user 1.10 sys
Running 2nd run with lemon calc... 130.26 real 117.88 user 1.13 sys
Running 3rd run with lemon calc... 130.76 real 117.90 user 1.10 sys

Time spent in user mode   (CPU seconds) : 654.049s
Time spent in kernel mode (CPU seconds) : 7.047s
Total time                              : 12:19.06s
CPU utilization (percentage)            : 89.4%
Times the process was swapped           : 0
Times of major page faults              : 34
Times of minor page faults              : 2361


And under 4BSD:

 Running a dry run with bison calc...done.
 Running 1st run with bison calc... 44.22 real 37.94 user 0.85 sys
 Running 2nd run with bison calc... 46.21 real 37.98 user 0.85 sys
 Running 3rd run with bison calc... 45.32 real 38.13 user 0.67 sys
 
 Running a dry run with lemon calc...done.
 Running 1st run with lemon calc... 116.53 real 100.10 user 1.13 sys
 Running 2nd run with lemon calc... 112.61 real 100.35 user 0.86 sys
 Running 3rd run with lemon calc... 114.16 real 100.19 user 1.04 sys
  
 Time spent in user mode (CPU seconds) : 553.392s
 Time spent in kernel mode (CPU seconds) : 6.978s
 Total time : 10:40.80s
 CPU utilization (percentage) : 87.4%
 Times the process was swapped : 223
 Times of major page faults : 50
 Times of minor page faults : 2750


Just a heads up, it does indeed look as thought hings have gone
backwards in terms of performance.  -sc

-- 
Sean Chittenden