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Re: stdcbench benchmark

From Ian Collins <ian-news@hotmail.com>
Newsgroups comp.lang.c
Subject Re: stdcbench benchmark
Date 2018-04-16 22:42 +1200
Message-ID <fjjd0dFoi67U1@mid.individual.net> (permalink)
References (1 earlier) <tWNAC.645818$a15.98543@fx22.am4> <pb0crv$fs7$1@dont-email.me> <LmQAC.1594032$jx2.496088@fx03.am4> <pb1lm0$pj0$1@dont-email.me> <y1%AC.962735$fn3.874925@fx32.am4>

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On 04/16/2018 10:37 PM, bartc wrote:
> On 16/04/2018 09:08, David Brown wrote:
>> On 16/04/18 00:29, bartc wrote:
> 
>>> (I ran the tests again with optimisations off. Then the difference
>>> between fastest and slowest compiler was 1.3:1 instead of 3:1 (with gcc
>>> 4th fastest). Here at least I know it is doing the work it has been told
>>> to do.
>>
>> But you also know that the results are totally and utterly meaningless.
>>    Testing compiler speed with optimisation turned off is like comparing
>> the speeds of cars in first gear.
> 
> It is making sure that all cars are taking the same route /and/ do the
> same number of full circuits. Since they are all identical cars with the
> same engine, it's a useful way of finding out why the fastest one is 30%
> faster than the slowest.

Testing cars with the handbrake on is a better analogy!

-- 
Ian.

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stdcbench benchmark Philipp Klaus Krause <pkk@spth.de> - 2018-04-15 10:38 +0200
  Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-15 02:31 -0700
  Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-15 13:42 +0100
    Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-15 18:00 +0100
      Re: stdcbench benchmark Melzzzzz <Melzzzzz@zzzzz.com> - 2018-04-15 18:11 +0000
        Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-15 19:30 +0100
          Re: stdcbench benchmark Melzzzzz <Melzzzzz@zzzzz.com> - 2018-04-15 18:52 +0000
        Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-15 20:15 -0700
  Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-15 20:42 +0100
    Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-15 22:31 +0200
      Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-15 23:29 +0100
        Re: stdcbench benchmark Philipp Klaus Krause <pkk@spth.de> - 2018-04-16 07:48 +0200
          Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-15 23:22 -0700
          Re: stdcbench benchmark Philipp Klaus Krause <pkk@spth.de> - 2018-04-16 11:52 +0200
        Re: stdcbench benchmark Philipp Klaus Krause <pkk@spth.de> - 2018-04-16 09:56 +0200
          Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-16 01:58 -0700
        Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-16 10:08 +0200
          Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-16 11:37 +0100
            Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-16 22:42 +1200
            Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-16 12:54 +0200
              Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-16 13:02 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-16 14:39 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-16 14:53 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-16 16:32 +0200
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-16 14:41 +0000
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-16 15:56 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-16 17:21 +0200
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-16 15:43 +0000
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-16 17:00 +0100
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-16 16:09 +0000
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-16 17:22 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 09:35 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 11:42 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 14:14 +0200
                Re: stdcbench benchmark Philipp Klaus Krause <pkk@spth.de> - 2018-04-17 15:49 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 18:45 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 23:00 +0200
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-17 21:18 +0000
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 23:20 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 09:27 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-18 11:30 +0100
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-18 03:43 -0700
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-18 22:58 +1200
                Re: stdcbench benchmark mark.bluemel@gmail.com - 2018-04-18 04:01 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-18 12:39 +0100
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-18 06:52 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-18 13:59 +0100
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-18 06:14 -0700
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-19 07:39 +1200
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-18 06:14 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 16:31 +0200
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-18 08:00 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 17:26 +0200
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-18 08:37 -0700
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-18 16:12 +0000
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-18 18:15 +0100
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-18 04:01 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 13:01 +0200
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-18 04:15 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 13:41 +0200
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-18 05:35 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-18 12:26 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 13:58 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-18 22:29 +0100
                Re: stdcbench benchmark Keith Thompson <kst-u@mib.org> - 2018-04-18 10:34 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 22:34 +0200
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 22:35 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-19 20:05 +0100
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-20 08:07 +1200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-19 23:34 +0100
                Re: stdcbench benchmark Keith Thompson <kst-u@mib.org> - 2018-04-19 16:05 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 00:18 +0100
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-25 23:12 +0000
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-20 16:15 +1200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 11:39 +0100
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-20 23:46 +1200
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-20 05:04 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 13:27 +0100
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-20 06:06 -0700
                Re: stdcbench benchmark supercat@casperkitty.com - 2018-04-20 13:05 -0700
                Re: stdcbench benchmark mark.bluemel@gmail.com - 2018-04-20 01:23 -0700
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-20 01:40 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 12:04 +0100
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-20 04:16 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 13:48 +0100
                Re: stdcbench benchmark Tim Rentsch <txr@alumni.caltech.edu> - 2018-04-23 11:53 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-23 20:33 +0100
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-26 01:00 -0700
                Re: stdcbench benchmark Keith Thompson <kst-u@mib.org> - 2018-04-20 09:17 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 19:25 +0100
                Re: stdcbench benchmark Keith Thompson <kst-u@mib.org> - 2018-04-20 11:58 -0700
                Re: stdcbench benchmark supercat@casperkitty.com - 2018-04-20 12:30 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 21:03 +0100
                Re: stdcbench benchmark Ben Bacarisse <ben.usenet@bsb.me.uk> - 2018-04-20 22:16 +0100
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 23:09 +0100
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 14:42 +0100
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-20 09:30 -0700
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-21 07:24 +1200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 20:43 +0100
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-21 07:59 +1200
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-21 08:01 +1200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 21:18 +0100
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-21 09:17 +1200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-20 23:15 +0100
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-18 02:14 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 09:54 +0200
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-18 01:21 -0700
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-18 11:40 +0100
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-18 11:26 +1200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-18 01:48 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-18 09:58 +0200
                Re: stdcbench benchmark Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-04-16 16:45 +0000
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-16 17:31 +0000
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-16 18:53 +0100
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-16 17:55 +0000
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-16 19:01 +0100
                Re: stdcbench benchmark Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-04-16 20:28 +0000
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-16 21:57 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 09:45 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 12:24 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 14:31 +0200
                Re: stdcbench benchmark Robert Wessel <robertwessel2@yahoo.com> - 2018-04-16 16:59 -0500
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 01:02 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 09:47 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 13:16 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 14:38 +0200
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-17 13:18 +0000
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 14:37 +0100
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-17 06:44 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 15:58 +0200
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-17 15:43 +0000
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-17 08:47 -0700
                Re: stdcbench benchmark Ian Collins <ian-news@hotmail.com> - 2018-04-17 08:04 +1200
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-16 20:30 +0000
                Re: stdcbench benchmark Melzzzzz <Melzzzzz@zzzzz.com> - 2018-04-16 16:31 +0000
                Re: stdcbench benchmark Keith Thompson <kst-u@mib.org> - 2018-04-20 14:22 -0700
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-17 00:42 -0700
              Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-16 07:00 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-16 16:35 +0200
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-16 09:28 -0700
                Re: stdcbench benchmark scott@slp53.sl.home (Scott Lurndal) - 2018-04-16 17:42 +0000
                Re: stdcbench benchmark Robert Wessel <robertwessel2@yahoo.com> - 2018-04-16 17:07 -0500
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-17 02:50 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 12:42 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 11:58 +0100
                Re: stdcbench benchmark Philipp Klaus Krause <pkk@spth.de> - 2018-04-17 14:01 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 13:40 +0100
                Re: stdcbench benchmark Philipp Klaus Krause <pkk@spth.de> - 2018-04-17 15:41 +0200
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 14:46 +0200
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-17 06:09 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 16:07 +0200
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 14:43 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 15:26 +0100
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-17 07:42 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 16:51 +0200
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-17 08:07 -0700
                Re: stdcbench benchmark Steven Petruzzellis <frelwizzen@gmail.com> - 2018-04-17 08:16 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 23:17 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 17:12 +0100
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 23:26 +0200
                Re: stdcbench benchmark bartc <bc@freeuk.com> - 2018-04-17 23:38 +0100
                Re: stdcbench benchmark Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2018-04-17 05:52 -0700
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 16:10 +0200
                Re: stdcbench benchmark David Brown <david.brown@hesbynett.no> - 2018-04-17 10:02 +0200
    Re: stdcbench benchmark Philipp Klaus Krause <pkk@spth.de> - 2018-04-15 23:20 +0200

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