Since I see people are suggesting more and more hallucinatory solutions
without providing any documentation, so I'll add my own :-)
Use the sound card as a scheduler. If it works for audio, it can work for you!
And for a more serious answer, look in:
http://www.gardena.net/benno/linux/audio/
A
Rafi Gordon wrote:
Hello,
Thanks.
You said
If you really meant 1 microsecond (as opposed to 1 millisecond)
Yes ,I mean it. In short: it's for a video-audio app; this app can be
termed soft (or semi) real time; The terminology is not important at
all. The fact is that there are scenarios w
On Sat, 20 Aug 2005, Rafi Gordon wrote:
> may I ask ehat is the recommnded way to write a a busy wait loop?
> If I am not wrong there is no "noop" command in "C" ; is there a noop
> is asm to achieve this ? or simply a loop which just do dummy
> operation
> like incrementing some integer ?
i sug
On Fri, 19 Aug 2005, Amos Shapira wrote:
> On 8/19/05, guy keren <[EMAIL PROTECTED]> wrote:
>
> > perhaps your machine is slower for this because it has SMP, and hence
> > requires locking (i tested on single processor machines).
>
> Maybe, I dunno.
> I've just test on my home machine (a single C
Hello,
Thanks.
You said
> If you really meant 1 microsecond (as opposed to 1 millisecond)
Yes ,I mean it. In short: it's for a video-audio app; this app can be
termed soft (or semi) real time; The terminology is not important at
all. The fact is that there are scenarios when
the timing is crit
On 8/19/05, guy keren <[EMAIL PROTECTED]> wrote:
>
> On Fri, 19 Aug 2005, Amos Shapira wrote:
>
> > > the fact is, that i kept getting very close values - closer then the
> >
> > That's the statement I was looking for (and didn't see) in your first
> > message - if they are identical then it coul
On Fri, 19 Aug 2005, Amos Shapira wrote:
> > the fact is, that i kept getting very close values - closer then the
>
> That's the statement I was looking for (and didn't see) in your first
> message - if they are identical then it could be that the call was simply
> faster than system's the clock
On 8/19/05, guy keren <[EMAIL PROTECTED]> wrote:
>
> On Fri, 19 Aug 2005, Amos Shapira wrote:
>
> > On 8/19/05, guy keren <[EMAIL PROTECTED]> wrote:
> > > actually, it _looks_ like gettimeofday() sometimes takes less then a
> > > micro-second to execute. i tested it a few years ago on redhat 7.3,
On Fri, 19 Aug 2005, Amos Shapira wrote:
> On 8/19/05, guy keren <[EMAIL PROTECTED]> wrote:
> > actually, it _looks_ like gettimeofday() sometimes takes less then a
> > micro-second to execute. i tested it a few years ago on redhat 7.3, on a
> > pentium 1.8MHz and an AMD athlon 2200+, and on both
On Fri, Aug 19, 2005 at 08:09:57AM +1000, Amos Shapira wrote:
> I'm not sure this is a correct way to measure - gettimeofday(2)'s *interface
> definition* is to count nanoseconds, but that doesn't mean that the system's
> clock can measure at this resolution.
Don't forget that clock interupts are
On 8/19/05, guy keren <[EMAIL PROTECTED]> wrote:
> actually, it _looks_ like gettimeofday() sometimes takes less then a
> micro-second to execute. i tested it a few years ago on redhat 7.3, on a
> pentium 1.8MHz and an AMD athlon 2200+, and on both of them running
> gettimeofday in a tight loop ver
On Thu, 18 Aug 2005, Rafi Gordon wrote:
Hello,
Is there a way to create a delay of 1 microsec in a user space
applcation in 2.4
or 2.6 kernel?
What you want is posix high resolution timers kernel patch.
http://high-res-timers.sf.net
--
Matan Ziv-Av. [EMAIL PROTECTED
On Thu, 18 Aug 2005, Gilad Ben-Yossef wrote:
> Rafi Gordon wrote:
> > Hello,
> >
> > Is there a way to create a delay of 1 microsec in a user space
> > applcation in 2.4
> > or 2.6 kernel?
>
> If you really meant 1 microsecond (as opposed to 1 millisecond) then the
> answer is to do a busy wait l
Use SCHED_FIFO and it will work.
Peter
=
To unsubscribe, send mail to [EMAIL PROTECTED] with
the word "unsubscribe" in the message body, e.g., run the command
echo unsubscribe | mail [EMAIL PROTECTED]
Rafi Gordon wrote:
Hello,
Is there a way to create a delay of 1 microsec in a user space
applcation in 2.4
or 2.6 kernel?
If you really meant 1 microsecond (as opposed to 1 millisecond) then the
answer is to do a busy wait loop for the duration of the time required.
Any system call will ta
Hello,
Is there a way to create a delay of 1 microsec in a user space
applcation in 2.4
or 2.6 kernel?
I had tried using nanosleep() or usleep() and got ,when doing it in a
loop,results which are on the average really much higher than 1
microsec.
man nanosleep on RH9 says:
The current impl
16 matches
Mail list logo
