www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.learn - Time some code using Tango

reply Matthias Walter <walter mail.math.uni-magdeburg.de> writes:
Hi there,

I'd like to time some functions using Tango, but only including the really used
CPU-time. StopWatch and the other time functions I've found don't mind on the
CPU usage, which means if I time multiple processes at once which share a
single CPU, their times increase...

Best regards
Matthias Walter
Feb 03 2009
parent reply Jarrett Billingsley <jarrett.billingsley gmail.com> writes:
On Tue, Feb 3, 2009 at 5:54 PM, Matthias Walter
<walter mail.math.uni-magdeburg.de> wrote:

 Hi there,

 I'd like to time some functions using Tango, but only including the reall=


y used CPU-time. StopWatch and the other time functions I've found don't mi=
nd on the CPU usage, which means if I time multiple processes at once which=
 share a single CPU, their times increase...

 Best regards
 Matthias Walter


That's something that the OS could do for you, like the "timex"
command on unix.  There's probably something magical in /proc/ that
you can use.  I have no idea what the corresponding functionality
would be in Windows, but it probably has something.
Feb 03 2009
parent reply grauzone <none example.net> writes:
Jarrett Billingsley wrote:

 On Tue, Feb 3, 2009 at 5:54 PM, Matthias Walter
 <walter mail.math.uni-magdeburg.de> wrote:

 Hi there,

 I'd like to time some functions using Tango, but only including the really
used CPU-time. StopWatch and the other time functions I've found don't mind on
the CPU usage, which means if I time multiple processes at once which share a
single CPU, their times increase...

 Best regards
 Matthias Walter


 
 That's something that the OS could do for you, like the "timex"
 command on unix.  There's probably something magical in /proc/ that
 you can use.  I have no idea what the corresponding functionality
 would be in Windows, but it probably has something.


If he had to use OS specific APIs (which would be another sad thing 
about Tango), I'd suggest to use clock_gettime() with 
CLOCK_THREAD_CPUTIME_ID under Unix.

What is timex?
Feb 03 2009
next sibling parent Jarrett Billingsley <jarrett.billingsley gmail.com> writes:
On Tue, Feb 3, 2009 at 7:15 PM, grauzone <none example.net> wrote:

 If he had to use OS specific APIs (which would be another sad thing about
 Tango), I'd suggest to use clock_gettime() with CLOCK_THREAD_CPUTIME_ID
 under Unix.

 What is timex?


http://en.wikipedia.org/wiki/Timex_(Unix)
Feb 03 2009
prev sibling parent Jarrett Billingsley <jarrett.billingsley gmail.com> writes:
On Tue, Feb 3, 2009 at 7:40 PM, Jarrett Billingsley
<jarrett.billingsley gmail.com> wrote:

 On Tue, Feb 3, 2009 at 7:15 PM, grauzone <none example.net> wrote:

 If he had to use OS specific APIs (which would be another sad thing about
 Tango), I'd suggest to use clock_gettime() with CLOCK_THREAD_CPUTIME_ID
 under Unix.

 What is timex?


 http://en.wikipedia.org/wiki/Timex_(Unix)


I realize why I know it as timex and not as time - our school uses
Solaris on many of its machines.
Feb 03 2009