Collect a number of different binaries compiled with different options,
all based on 1.2.pre1.  Develop some process, such as booting linux,
compressing some big file, and then rebooting that takes a while.
Time how long each binary takes to execute that task.

Problems with reboot!
1.2.pre1 didn't actually do reboot right!!!!!!!!!
what a pain, all these binaries are compiled by hand.
Maybe I can make a script to compile them all again.
patch -p0 <<EOF
wefji
wefj
EOF
rm main.cc; cvs upd main.cc
etc.


bochs000: 1.2, no args
bochs001: 1.2, no args, change CPU SMF=0
bochs002: 1.2, no args, change all SMFs=0
bochs004: 1.2, --with-nogui
bochs005: 1.2, --enable-debugger
bochs006: 1.2, --enable-cdrom --enable-sb16=linux --enable-debugger
bochs007: 1.2, NO_LOGGING defined in bochs.h
bocsh008: 1.2, no compile args
bocsh008a: 1.2, -O2 -fomit-frame-pointer
bocsh008b: 1.2, -O6 -fomit-frame-pointer
bochs010: 1.2, --enable-processors=2
bochs011: 1.2, --enable-processors=2 --enable-debugger
bochs015: 1.2, --enable-processors=4
bochs016: 1.2, --enable-processors=4 --enable-debugger
bochs020: 1.1.2, no args
bochs021: 1.1.2, --enable-debugger
bochs030: 3/25/2000, --enable-fpu
bochs031: 3/25/2000, --enable-fpu --enable-debugger


First Results
bochs000	22.26user 0.33system 0:23.70elapsed 
bochs001	21.44user 0.26system 0:22.09elapsed 
bochs002	21.90user 0.21system 0:22.42elapsed 
bochs004	21.49user 0.23system 0:21.86elapsed 
bochs005	21.63user 0.29system 0:22.25elapsed 
bochs006	30.05user 0.33system 0:30.99elapsed 
bochs007	21.38user 0.23system 0:21.95elapsed 
bochs008	34.15user 0.32system 0:34.85elapsed 
bochs008a	21.07user 0.24system 0:21.69elapsed 
bochs008b	21.50user 0.33system 0:22.13elapsed 
bochs010	23.51user 0.36system 0:24.19elapsed 
bochs011	31.10user 0.38system 0:31.86elapsed 
bochs015	26.82user 0.24system 0:27.43elapsed 
bochs020	23.59user 0.44system 0:26.18elapsed 
bochs021	29.27user 0.45system 0:30.29elapsed 
bochs030	17.55user 0.33system 0:18.17elapsed 
bochs031	21.69user 0.33system 0:22.49elapsed 


../bochs000	21.76user 0.26system 0:22.28elapsed
../bochs001	21.41user 0.26system 0:21.89elapsed
../bochs002	21.91user 0.26system 0:22.35elapsed
../bochs004	21.49user 0.21system 0:21.88elapsed
../bochs005	21.70user 0.35system 0:22.44elapsed
../bochs006	29.99user 0.51system 0:31.17elapsed
../bochs007	21.29user 0.27system 0:21.96elapsed
../bochs008	34.32user 0.29system 0:34.95elapsed
../bochs008a	21.13user 0.25system 0:21.73elapsed
../bochs008b	21.66user 0.29system 0:22.28elapsed
../bochs010	23.69user 0.29system 0:24.25elapsed
../bochs011	31.18user 0.50system 0:32.03elapsed
../bochs015	27.21user 0.27system 0:27.82elapsed
../bochs016	35.36user 0.44system 0:36.15elapsed
../bochs020	21.82user 0.31system 0:22.45elapsed
../bochs021	29.34user 0.44system 0:30.13elapsed
../bochs030	17.69user 0.25system 0:18.27elapsed
../bochs031	21.80user 0.29system 0:22.58elapsed


Results from a short Linux-x86 test:

                         % performance
                         compared to
name           seconds   3/25/2000    What is it
../bochs000	22.28	 82.00     1.2: no args
../bochs001	21.89	 83.46     1.2: turn off SMF for CPU only, improvement
../bochs002	22.35	 81.74     1.2: turn off SMF for all, reduction!!
../bochs004	21.88	 83.50     1.2: nogui
../bochs005	22.44	 81.41     1.2: debugger
../bochs006	32.58	 56.08     1.2: cdrom, sb16, debugger
../bochs006a	22.80	 80.13     1.2: cdrom
../bochs006b	23.03	 79.33     1.2: sb16
../bochs006c	23.49	 77.78     1.2: cdrom, sb16
../bochs006d	22.59	 80.87     1.2: none
../bochs006e	31.21	 58.53     1.2: cdrom, debugger
../bochs006f	30.73	 59.45     1.2: sb16, debugger
../bochs007	21.96	 83.19     1.2: no logging helped a tiny bit
../bochs008	34.95	 52.27     1.2: without optimization, bad
../bochs008a	21.73	 84.07     1.2: -O2 without -g good
../bochs008b	22.28	 82.00     1.2: -O6 didn't help a bit
../bochs010	24.25	 75.34     1.2: 2 processors
../bochs011	32.03	 57.04     1.2: 2 processors + debugger
../bochs015	27.82	 65.67     1.2: 4 processors
../bochs016	36.15	 50.53     1.2: 4 processors + debugger
../bochs020	17.94   101.84     1.1.2: no args
../bochs021	22.44    81.42     1.1.2: debugger
../bochs030	18.27	100.00     3/25: no args
../bochs031	22.58	 80.91     3/25: debugger
../bochs091	20.91    87.37     cvs, never exit cpu_loop
../bochs092	19.03    96.01     cvs, use bx_mem and bx_cpu instead of array
../bochs093	19.12    95.55     use bx_mem and bx_cpu instead of array
../bochs094	27.63    66.12     use bx_mem and bx_cpu instead of array, 4proc

Result from a longer Linux-alpha test.
Workload:
  boot DLX linux
  find / > /dev/null
  cd /
  tar czvf - `find etc var lib` > /dev/null
  reboot


                   Performance
                   relative to
Binary     Seconds   1.1.2     Description
--------   ------    -------   ----------------------------------
bochs000   490.10    85.23%    1.2: no args
bochs001   467.61    89.33%    1.2: turn off SMF for CPU only (WHY BETTER!?)
bochs002   527.61    79.17%    1.2: turn off SMF for all
bochs004   472.87    88.34%    1.2: --with-nogui
bochs005   650.44    64.23%    1.2: debugger
bochs006   660.06    63.29%    1.2: cdrom, sb16, debugger
bochs006a  486.59    85.85%    1.2: cdrom
bochs006b  487.76    85.65%    1.2: sb16=linux
bochs006c  497.91    83.90%    1.2: cdrom, sb16=linux
bochs006d  493.88    84.58%    1.2: none, same as bochs000
bochs006e  691.04    60.45%    1.2: cdrom, debugger
bochs006f  648.44    64.42%    1.2: sb16=linux, debugger
bochs007   466.31    89.58%    1.2: compiled out log code, helped a tiny bit
bochs008   947.19    44.10%    1.2: CFLAGS="", no optimization, bad
bochs008a  488.01    85.60%    1.2: -O2 without -g
bochs008b  500.74    83.42%    1.2: -O6 didn't help a bit
bochs010   499.31    83.66%    1.2: 2 processors
bochs011   662.13    63.09%    1.2: 2 processors + debugger
bochs015   554.39    75.35%    1.2: 4 processors
bochs016   693.52    60.23%    1.2: 4 processors + debugger
bochs020   417.76   100.00%    1.1.2: with no args
bochs021   552.67    75.58%    1.1.2: --enable-debugger
bochs040   396.59   105.33%    no-cpu-array: no args
bochs040   404.18   103.36%    no-cpu-array: no args
bochs041   464.13    90.01%    no-cpu-array: disable SMF in CPU only
bochs041   475.07    87.94%    no-cpu-array: disable SMF in CPU only
bochs042   431.51    96.81%    no-cpu-array: disable SMF in all but CPU
bochs042   438.55    95.26%    no-cpu-array: disable SMF in all but CPU
bochs043   435.83    95.85%    no-cpu-array: disable all SMF
bochs043   438.05    95.37%    no-cpu-array: disable all SMF
bochs045   491.15    85.06%    no-cpu-array: 2 processors
bochs046   673.29    62.05%    no-cpu-array: 2 processors + debugger
bochs047   576.93    72.41%    no-cpu-array: 4 processors
bochs048   679.53    61.48%    no-cpu-array: 4 processors + debugger
bochs091   450.86    92.65%    cvs: stay-in-cpu-loop-for-1proc
bochs092   417.04   100.17%    cvs: no-cpu-array-for-1proc     (CURRENT)