🚀 go-pugleaf

In article <3865@mipos3.intel.com> woodstock@hobbes.intel.com (Nate Hess) writes:
>In article <1686@wpi.wpi.edu>, jhallen@wpi (Joseph H Allen) writes:
>>vi is 4 times less CPU hungry than emacs is.  No way is all of that due to
>>EMACS being lispified.  
>
>4 times?  Where did you get that number?  I'd be interested in seeing
>your benchmarks.
>

Certainly:

Here's the top of the 'sa' listing from my school's Encore multimax mainframe:

[#calls   secs real     secs cpu                      core size  program]
[------   -----------  -----------                    ---------  -------]
 714990920181100.13re  451044.24cp        11avio         7k  
   32452  127982.62re   91468.04cp        35avio        58k     a.out
     279   41175.65re   33656.60cp       231avio         1k     MOPAC
      31   19555.90re   16891.89cp        27avio         2k     tang.exe
      52   20578.62re   16483.96cp       286avio       -62k     3d
    5271   60848.38re   16151.23cp        43avio         0k     ftp
    1465   36636.23re   10989.31cp        44avio        -4k     macsyma
     462   13825.55re   10770.85cp         6avio         0k     rsa.out
   76195  624754.68re    9645.13cp        62avio         0k     gnu-emacs
     196   10987.85re    9384.23cp       204avio         3k     dr
     273   10850.05re    7308.51cp     16836avio         0k     save.out
      20    8190.77re    7257.58cp     93260avio         0k     u.out
    2539    8185.82re    6504.13cp         5avio         0k     test
   11079   16738.35re    6142.62cp       360avio        99k     data_divid
      37    6615.15re    5496.17cp      6280avio      -101k     vortex9
    1315  596559.10re    5437.55cp        42avio         0k     bitfd*
   22162   75731.72re    5276.16cp        61avio         0k     bboard
      37    7442.20re    4356.29cp         3avio         0k     elegxos
    3729   21597.55re    4333.92cp        52avio       -85k     scheme
      15    4466.52re    4168.84cp       492avio        19k     vent1
   13054   48746.87re    4098.52cp        12avio         0k     e
  205584 2192733.50re    3850.42cp         8avio         0k     sendmail*
      15    4680.92re    3775.66cp       147avio         0k     prog7
      30    4497.17re    3742.22cp       159avio         0k     bda
  162267 5664264.98re    3700.58cp        21avio         0k     csh
   33015  605976.45re    3388.80cp        15avio         0k     rscsd*
     420    3787.57re    3283.69cp        38avio       -13k     b.out
     117    5106.43re    3244.78cp         2avio         0k     monop
     474    4944.00re    3071.42cp        42avio         0k     ***other
   56251    3808.97re    3034.36cp         8avio         0k     fcom
      53    3775.92re    2996.52cp     12443avio        -5k     vortex3
       5    3232.38re    2902.40cp       687avio      -191k     ven
     743    5023.98re    2812.68cp        82avio         0k     tasef
    6339    5880.40re    2784.78cp         7avio         0k     mabel
  164240  223939.97re    2596.93cp        24avio         0k     mail
       9    3413.75re    2480.35cp        29avio         0k     drequalz.e
   14300   77374.25re    2463.92cp        34avio         0k     nethack
   25530  149623.03re    2434.80cp       229avio         0k     rn
     541    3824.80re    2376.03cp      3861avio         0k     tube.out
      40    2717.67re    2317.02cp     44062avio       -59k     kd
      40    3599.60re    2252.66cp     25721avio         0k     save1.out
     486    2954.83re    2214.46cp         1avio       -73k     fmt_dy*
    8487   45253.10re    2159.62cp        21avio         0k     hack
      11    2521.67re    2144.97cp        51avio         0k     tang1.exe
      66    4040.55re    2009.51cp      2108avio         0k     vortex2
    7551    3249.00re    1965.10cp        56avio         0k     lastcomm
      14    2651.83re    1927.65cp        20avio         0k     drequal.ex
   48157    2685.98re    1893.86cp         9avio         0k     ccom
       5    2154.97re    1805.24cp         9avio         0k     fig1
  169950    6392.33re    1786.44cp        24avio         0k     inews
      58    1923.00re    1646.43cp         5avio         0k     rs3.out
     349    2064.15re    1631.45cp        25avio         0k     c.out
      95    2087.37re    1627.74cp        32avio         0k     exsyn.out
       7    1737.28re    1614.59cp       234avio         0k     vent
  431564  402749.30re    1558.32cp         1avio         0k     sh
      34    1768.58re    1548.63cp         7avio         0k     rs5.out
     309    2125.90re    1505.15cp        13avio       -71k     fmt_dy
      82    3682.57re    1486.00cp        90avio       -57k     qp
     230    2029.45re    1483.01cp        40avio         0k     3dim
   60201    2327.20re    1467.09cp        42avio         0k     ld
      28    1586.87re    1422.36cp        25avio         0k     yan2
  576667    2957.47re    1408.25cp         0avio         0k     grep
  266924    3513.67re    1371.92cp         2avio         0k     ls
       9    1461.85re    1368.42cp        19avio         0k     mmm.out
      38    1718.97re    1368.08cp       105avio         0k     ray
  648678   45645.02re    1363.77cp         0avio         0k     sh*
    3353    3319.60re    1320.71cp       715avio         0k     find
      71    1692.70re    1305.62cp        22avio         0k     aa
      10    1865.40re    1260.93cp        55avio         0k     sequal.exe
     127    1614.80re    1191.68cp         7avio         0k     lu
      26    1401.15re    1190.06cp         6avio         0k     rs7.out
      50    1268.60re    1183.52cp         5avio         0k     rs4.out
       9    1328.20re    1155.93cp        26avio         0k     siproc2
       6    1256.00re    1121.20cp     54064avio         0k     uh.out
      49    1461.25re    1106.32cp         7avio         0k     rs1.out
   11966    1306.72re    1074.89cp         6avio         0k     mklev
       4    1243.73re    1067.24cp        69avio         0k     fire2
    1332    1249.88re    1066.50cp         2avio         0k     bye
   30676  154142.85re    1043.17cp        28avio         0k     vi
   72859   15334.23re    1032.50cp        24avio         0k     sendmail
      25    1151.97re    1027.32cp     11775avio         0k     unsteady
[remaining 150k deleted]

Sorry so long, but showing how much higher up EMACS is compared to vi is quite
theatrical: 

CPU time per session comparison (biased towards vi since people use emacs
several times per session by suspending it):

emacs: cpu-secs/sessions = .127
vi:    cpu-secs/sessions = .0340

emacs is 3.74 times worse.

CPU time per real time (biased towards emacs since emacs gets left idle for
long periods):

emacs: CPU/REAL = .0154
vi:    CPU/REAL = .00677

emacs is 2.27 times worse.

So assuming people do similer things with emacs and vi, emacs is about 3 times
worse (ok, so my 4 times estimate was a bit exaggerated :-).  Actually, emacs
may be 4 times as worse on other systems because on ours, the terminal servers
do some of the simple editing work, but only for emacs. 

Other notes:  the program 'e' shown above is an editor I wrote which some
people are using.  Unfortunately, it's currently very inefficeint because it
has a timing loop (ticks are too slow) to time the terminal output data.  This
is so that it doesn't fill up the terminal server's output buffer so that it
remains interruptable (I use it over 1200 baud phone line you see). 

nethack is very popular right now.

MOPAC, the second top cpu time user before a.out is a chemical simulator of
some kind.

monopOLY crashed over christmas break.