[Xenomai] Analogy with high sample rates

Hi I am trying to read from several DAQ devices (2 National Instruments 6034E for now, 6 analog inputs on each card) at high frequencies (~10kHz) but my computer often locks up when I want to stop the acquisition (by calling a4l_snd_cancel and/or a4l_close) but before that, everything seems to be

Re: [Xenomai] Xenomai v.3.0.7 on Ubuntu 18.04 and kernel 4.9.90

Hi, You may want to disable CONFIG_MAXSMP, some people reported similar issues with this option enabled. Florian On 10/11/18 7:23 PM, Wojciech Domski wrote: Here are kernel configurations files: https://pastebin.com/zuucW3WW (for clean 4.9.90) https://pastebin.com/AvD9T9Lx (for 4.9.90 with

Re: [Xenomai] Latency test shows weird results

Hello, This is very much likely the issue fixed by this patch: https://git.xenomai.org/xenomai-3.git/commit/?h=stable-3.0.x&id=b4188f68e9ac7c9e9da25cf57d9756f0ccb78f4d You may want to try Xenomai 3.0.2 to see if you still have the problem. Xenomai 3.0.2 does indeed correct the "offset" caused b

Re: [Xenomai] Latency test shows weird results

, Florian Richer wrote: Hello, This is very much likely the issue fixed by this patch: https://git.xenomai.org/xenomai-3.git/commit/?h=stable-3.0.x&id=b4188f68e9ac7c9e9da25cf57d9756f0ccb78f4d You may want to try Xenomai 3.0.2 to see if you still have the problem. Xenomai 3.0.2 does indeed cor

Re: [Xenomai] Latency test shows weird results

Hello, In case someone is having similar issues, this problem seems to have disappeared (latency ran for a whole week without any overrun or high latencies) after a microcode update : CONFIG_MICROCODE=y CONFIG_MICROCODE_INTEL=Y & on lubuntu : apt-get install intel-microcode dmesg now shows

Re: [Xenomai] Can't wait on conditions on 3.0.5

_cond_create -> 0 rt_task_spawn -> 0 rt_cond_wait_until took 22047 ticks, ret -110 rt_task_join-> 0 It should wait 10 seconds, but returns immediately with ETIMEOUT. -- Philippe. -- Florian RICHER Institut des Systèmes Intelligents et de Robotique - CNRS Université Pi