* time function behaving strane
@ 2006-02-03 4:15 Conio sandiago
2006-02-03 19:19 ` john stultz
0 siblings, 1 reply; 3+ messages in thread
From: Conio sandiago @ 2006-02-03 4:15 UTC (permalink / raw)
To: linux-kernel
Hi all,
i am using time function in my application.
When i call the try function in a loop of say 1 lac iterations then i
m facing strange behaviour.
What i am doing is that i am making a call twice to time function
inside every iteration and i compare the time of both the calls.
But sometimes the time obtained from recent call is 1 second less than
the previous call.
Has anybody observed such kind of problem??
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: time function behaving strane
2006-02-03 4:15 time function behaving strane Conio sandiago
@ 2006-02-03 19:19 ` john stultz
2006-02-03 19:30 ` Thomas Gleixner
0 siblings, 1 reply; 3+ messages in thread
From: john stultz @ 2006-02-03 19:19 UTC (permalink / raw)
To: Conio sandiago; +Cc: linux-kernel
On Fri, 2006-02-03 at 09:45 +0530, Conio sandiago wrote:
> Hi all,
> i am using time function in my application.
> When i call the try function in a loop of say 1 lac iterations then i
> m facing strange behaviour.
>
> What i am doing is that i am making a call twice to time function
> inside every iteration and i compare the time of both the calls.
> But sometimes the time obtained from recent call is 1 second less than
> the previous call.
>
> Has anybody observed such kind of problem??
Time inconsistencies are possible with some hardware, although full
second inconsistencies are a bit large.
Please open a bug at http://bugzilla.kernel.org
Attach a full dmesg log and assign it to me.
thanks
-john
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: time function behaving strane
2006-02-03 19:19 ` john stultz
@ 2006-02-03 19:30 ` Thomas Gleixner
0 siblings, 0 replies; 3+ messages in thread
From: Thomas Gleixner @ 2006-02-03 19:30 UTC (permalink / raw)
To: john stultz; +Cc: Conio sandiago, linux-kernel
On Fri, 2006-02-03 at 11:19 -0800, john stultz wrote:
> On Fri, 2006-02-03 at 09:45 +0530, Conio sandiago wrote:
> > Hi all,
> > i am using time function in my application.
> > When i call the try function in a loop of say 1 lac iterations then i
> > m facing strange behaviour.
> >
> > What i am doing is that i am making a call twice to time function
> > inside every iteration and i compare the time of both the calls.
> > But sometimes the time obtained from recent call is 1 second less than
> > the previous call.
> >
> > Has anybody observed such kind of problem??
>
> Time inconsistencies are possible with some hardware, although full
> second inconsistencies are a bit large.
>
> Please open a bug at http://bugzilla.kernel.org
>
> Attach a full dmesg log and assign it to me.
Please provide also test code which makes that problem visible.
tglx
^ permalink raw reply [flat|nested] 3+ messages in thread
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2006-02-03 4:15 time function behaving strane Conio sandiago
2006-02-03 19:19 ` john stultz
2006-02-03 19:30 ` Thomas Gleixner
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