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Re: Allocate length of word vs fixed length

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On 20/07/2021 01:40, DFS wrote:
> On 7/19/2021 7:30 PM, Real Troll wrote:
>> On 19/07/2021 19:29, dfs wrote:
>>>
>>> 0.1 seconds here for (1 * 370103 =  370103) on my old system
>>> 0.5 seconds for (6 * 370103 = 2220618)
>>>
>>
>> How are you measuring the timing? 
>
>
> When I first posted the code I was running Linux (gcc) and it had no 
> timing code so I used the standard:
> $ time ./loadwords wordfile
>
> I later added CLOCK_MONOTONIC_RAW timing to the source code.  You 
> probably know already that on Windows you can use the 
> QueryPerformanceCounter() in the code.
>
> I'm back on Windows now (tcc compiler), and can use an outside timer 
> called ptime.
>
> $ tcc -Wall realtroll.c -o realtroll.exe
> $ ptime realtroll words_alpha.txt
> Total Lines are: 370103
> Execution time: 0.529 s
>
>
>
>
I have always used something like this:

clock_t t;
t = clock();
char **words = loadfile(argv[1], &length);
t = clock() - t;

Then use a printf like so:

double time_taken = ((double)t) / CLOCKS_PER_SEC;
printf("loadfile took %f seconds to execute \n", time_taken);

It is quite rudimentary but works most of the time.

In my code example I tweaked some numbers and the time taken was reduced 
dramatically but not as low as your figures.

The numbers I changed were:

const int STEPSIZE = 100000;
char buf[1000000];

Your timings are still very fast.

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Allocate length of word vs fixed length dfs <nospam@dfs.com> - 2021-07-19 12:50 -0400
  Re: Allocate length of word vs fixed length Bart <bc@freeuk.com> - 2021-07-19 19:01 +0100
    Re: Allocate length of word vs fixed length dfs <nospam@dfs.com> - 2021-07-19 14:29 -0400
      Re: Allocate length of word vs fixed length Bart <bc@freeuk.com> - 2021-07-19 19:49 +0100
        Re: Allocate length of word vs fixed length dfs <nospam@dfs.com> - 2021-07-19 18:01 -0400
          Re: Allocate length of word vs fixed length Bart <bc@freeuk.com> - 2021-07-19 23:25 +0100
      Re: Allocate length of word vs fixed length scott@slp53.sl.home (Scott Lurndal) - 2021-07-19 20:00 +0000
        Re: Allocate length of word vs fixed length Branimir Maksimovic <branimir.maksimovic@gmail.com> - 2021-07-19 23:29 +0000
      Re: Allocate length of word vs fixed length Real Troll <real.troll@trolls.com> - 2021-07-20 00:30 +0100
        Re: Allocate length of word vs fixed length DFS <nospam@dfs.com> - 2021-07-19 20:40 -0400
          Re: Allocate length of word vs fixed length Real Troll <real.troll@trolls.com> - 2021-07-20 17:00 +0000
      Re: Allocate length of word vs fixed length Kaz Kylheku <563-365-8930@kylheku.com> - 2021-07-24 01:07 +0000
  Re: Allocate length of word vs fixed length David Brown <david.brown@hesbynett.no> - 2021-07-19 21:35 +0200
    Re: Allocate length of word vs fixed length dfs <nospam@dfs.com> - 2021-07-19 18:02 -0400
  Re: Allocate length of word vs fixed length Ike Naar <ike@rie.sdf.org> - 2021-07-19 21:11 +0000
    Re: Allocate length of word vs fixed length dfs <nospam@dfs.com> - 2021-07-19 18:03 -0400
      Re: Allocate length of word vs fixed length Ike Naar <ike@sdf.org> - 2021-07-20 05:28 +0000
  Re: Allocate length of word vs fixed length dfs <nospam@dfs.com> - 2021-07-19 18:21 -0400
    Re: Allocate length of word vs fixed length Bart <bc@freeuk.com> - 2021-07-19 23:29 +0100
      Re: Allocate length of word vs fixed length dfs <nospam@dfs.com> - 2021-07-19 18:40 -0400
  Re: Allocate length of word vs fixed length Peter 'Shaggy' Haywood <phaywood@alphalink.com.au> - 2021-07-20 11:44 +1000
  Re: Allocate length of word vs fixed length Real Troll <real.troll@trolls.com> - 2021-07-20 22:15 +0000
    Re: Allocate length of word vs fixed length dfs <nospam@dfs.com> - 2021-07-20 20:22 -0400
      Re: Allocate length of word vs fixed length dfs <nospam@dfs.com> - 2021-07-21 23:23 -0400

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