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<== Date ==> <== Thread ==>

Subject: Re: Forward Link v.s. Scan them all ?
From: <jun-ichi.odagiri@kek.jp>
To: "Eric Norum" <wenorum@lbl.gov>
Cc: tech-talk@aps.anl.gov
Date: Mon, 06 Jun 2011 11:51:13 +0900
Dear Eric;

> A FLNK chain of several thousand records is likely to cause stack 
overflow on RTEMS or vxWorks and perhaps even on Linux/OS X.

It will never come to my mind if I had not asked the question. I'd like 
to
thank you for your VERY quick response and the pointing out.

Lot's of thanks again!

J. Odagiri


----- Original Message -----
> 
> On Jun 5, 2011, at 7:34 PM, <jun-ichi.odagiri@kek.jp> wrote:
> 
> > Hi, all;
> > 
> > I have a long series of bi record to process, which have an access 
to
> > a hardware register, say, every 5 seconds.
> > 
> > The number of records reaches a few to several thousands. In this 
case,
> > which one of the following two options is better or no essential
> > difference from performance point of view?
> > 
> > 1)Chains all the records by using FLNK and process the first one 
every
> > 5 second
> 
> A FLNK chain of several thousand records is likely to cause stack 
overflow on RTEMS or vxWorks and perhaps even on Linux/OS X.
> 
> > 
> > 2)Put them all into the “5 second” scan list
> > 
> > I recognize that measuring it is no big deal, but I´d like to ask 
the
> > experts first expecting one of you to point out something else to
> > consider, which I may be overlooking, other than performance issue.
> > 
> > Thanks a lot in advance.
> > 
> > J. Odagiri, High Energy Research Organization (KEK)
> > 
> > 
> > 
> 
> -- 
> Eric Norum
> wenorum@lbl.gov
> 
> 
> 
> 



References:
Xenomai Linux Dirk Zimoch
Re: Xenomai Linux Andrew Johnson
Re: Xenomai Linux Dirk Zimoch
Forward Link v.s. Scan them all ? jun-ichi.odagiri
Re: Forward Link v.s. Scan them all ? Eric Norum

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