> As far as i know jiffies will give time in seconds.
>
Are you sure?
One way I usually measure time on ia32 architecture based machines:
#include <asm/msr.h> /* where asm should point to asm-i386 by a symb
* link
*/
time_measure{
u_int32_t low, high;
rdtsc(low,high);
}
Of course, there are plenty of other ways. If anyone can recommend
another one, I look forward to read...
Regards,
Lukas
On Tue, 12 Mar 2002, Rupa wrote:
> As far as i know jiffies will give time in seconds.
>
> Regards,
> R.Rupa
> Ionidea Enterprise Solutions Pvt Ltd.,
> 38-40,Export Promotion
> Industrial Park,Whitefield,
> Bangalore-560066
>
>
>
> -----Original Message-----
> From: kernelnewbies-bounce@nl.linux.org
> [mailto:kernelnewbies-bounce@nl.linux.org] On Behalf Of Joerg Eggink
> Sent: Monday, March 11, 2002 4:27 PM
> To: kernelnewbies@nl.linux.org
> Subject: time measurements
>
>
> Hello all
>
> How can i make time measurements smaller than 1 milliseconds in a kernel
>
> module.
>
> I try it with the jiffies value but I get always the same output value
> because the time is to short.
> But I'm not sure what jiffies is. Is it time in seconds, milliseconds or
> time
> ticks or something else ?
>
> Thanks for your help in advance
>
> Regards
>
> Jörg
>
>
>
> --------------------------------------------------------
> Joerg Eggink
> Network Laboratories Heidelberg NEC Europe Ltd.
> Adenauerplatz 6
> D-69115 Heidelberg, Germany
>
> email: joerg.eggink@ccrle.nec.de
> http://www.ccrle.nec.de
> --
> Kernelnewbies: Help each other learn about the Linux kernel.
> Archive: http://mail.nl.linux.org/kernelnewbies/
> FAQ: http://kernelnewbies.org/faq/
>
>
> --
> Kernelnewbies: Help each other learn about the Linux kernel.
> Archive: http://mail.nl.linux.org/kernelnewbies/
> FAQ: http://kernelnewbies.org/faq/
--
Lukas Ruf Swiss Federal Institute of Technology
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