From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4AA93B24.8010802@domain.hid> Date: Thu, 10 Sep 2009 19:45:08 +0200 From: Gilles Chanteperdrix MIME-Version: 1.0 References: <7a15153d0909081259o47b0fcb7k46f679e7dfe83456@domain.hid> <4AA6BC5D.8020704@domain.hid> <7a15153d0909090803o309c5883q5c02ebef4fa794d8@domain.hid> <4AA7C4F7.6000903@domain.hid> <7a15153d0909091206y5d16ffcck32d0c8cc3c120f6c@domain.hid> <4AA820D4.8000302@domain.hid> <7a15153d0909101028p11716996q7929815b6b65ccb0@domain.hid> In-Reply-To: <7a15153d0909101028p11716996q7929815b6b65ccb0@domain.hid> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] High Latency on PXA List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Felipe Castro Cc: xenomai@xenomai.org Felipe Castro wrote: > I'm a little bit lost about this issues cause when running the xenomai > 2.4.8 with the patch that you send me it worked, but with new version it > doesn't work. > Acctually i using the kernel 2.6.27 and i understand what you told me , > in version 2.4.9.1 there aren't a patch to this kernel version, neither > xenomai 2.4.8. :S 2.4.8 appeared to work, but it had a bug. See https://mail.gna.org/public/xenomai-core/2009-08/msg00021.html > > The problem is, I'm using a Voipac development kit, and the have only > the kernel 2.6.27 BSP. > > So , i tried to disable the float point emulation but the kernel didn't > load OK . It proves that your user-space support is compiled for hardware float, but not PXA hardware floats. This is a pure waste of CPU power. See: http://www.arm.linux.org.uk/mailinglists/faq.php#f3 Note that Xenomai applications compiled that way will not work either. -- Gilles