From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 11 Aug 2015 21:51:32 +0200 From: Gilles Chanteperdrix Message-ID: <20150811195132.GD29076@hermes.click-hack.org> References: <2a853db9.e8c8.14f1bf15b2f.Coremail.ericvic@163.com> <20150811194457.GC29076@hermes.click-hack.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20150811194457.GC29076@hermes.click-hack.org> Subject: Re: [Xenomai] x86 xenomai-2.6.4 linux-3.10.32 with i915 enble and CONFIG_PCI_MSI enble List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: eric Cc: xenomai@xenomai.org On Tue, Aug 11, 2015 at 09:44:57PM +0200, Gilles Chanteperdrix wrote: > On Tue, Aug 11, 2015 at 04:47:26PM +0800, eric wrote: > > Hi Gilles：I have a proble with Intel(R) Atom(TM) CPU E3827 @ > > 1.74GHz . We have fpga on pcie and fpga give 250us > > interrupt signal to our task . The interrupt type is > > MSI .The proble is when we start gpu test glxgears the > > task latency just 15us when we start without glxgears > > the latency is about 120us . We tested a week‘s time > > always the same situation. We don’t know why？ > > Thanks！！！ > > Hi, I do not answer for free to private support requests. If you > want support for free, then please use the mailing list. If you are > looking for consulting, then let us first agree on what you are > looking for exactly. Sorry, you actually used the list. Seems like I just made a fool of myself. The answer is to use the I-pipe trace. -- Gilles. https://click-hack.org