Re: Why X11 influences the latency of xenomai？

I'm thinking it's worth as a troubleshooting step to remove the GPU, no graphics at all (nor integrated) and do graphics completely over USB and see if those spikes come back. Alec

Re: Why X11 influences the latency of xenomai？

I have seen latency spikes caused by things in X with all DRM/KMS drivers disabled, only using xf86-video-vesa with Mesa software rasterizer. X can cause spikes without any GPU involvement, and I'm interested in this subject as well. Alec

Re: [xenomai-images PATCH 0/2] Add support for x86(32bit)

Don't you need to modify entry_32.S for IPIPE? Alec

Re: IPIPE 5.4 support?

Does the Dovetail kernel patch offer the same latency as IPIPE? Thank you, Jan. Alec

IPIPE 5.4 support?

Hi, Are there any plans to support kernel 5.4? This kernel is LTS and features Lima+Panfrost with many other notable improvements and performance enhancements such as further optimized x86 FPU code (from kernel 5.2) Alec

Re: issue of hibernate for ipipe

Hibernate/suspend/C-states etc generally cause problems with IPIPE. Best to not have any of that. Alec

Re: Qt application on Xenomai

Can you post your source files somewhere? I can't see what's going on because all the code is a paragraph and word wrapped. Alec

Re: latency test

Firefox bumps latency up too, I wonder if the Xenomai pros have any advice on this. Good question! It'd be nice to do video editing and 4K encoding while doing real-time processes too. Alec

Re: Cobalt compatible distribution

Hi Don, Glad I could help. Sorry for all the confusion! Alec

Re: Cobalt compatible distribution

Oh boy, just when I thought I understood your question. Xenomai git sources currently supports the 4.4 series, 4.9 series, and 4.14. If you want 4.14 support, use this one: https://gitlab.denx.de/Xenomai/ipipe-x86 Then follow this guide, starting at "Installing the Cobalt core:"

Re: Cobalt compatible distribution

>All I was looking to distriwatch for was a >distribution which shipped with a kernel version supported by Cobalt. A, got it!!! Kernel version and distro don't matter at all. People run 4.14 kernels on distros shipped with 2.6.32 and it works fine. The old saying, kernel space always

Re: Cobalt compatible distribution

Hi, Cobalt enabled vs cobalt supported, what is the difference here? Cobalt is part of Xenomai, you patch the kernel using prepare-kernel.sh and you enable the Cobalt kernel config option via Kconfig menu. If you want to write an RTDM driver, the kernel must be patched and configured

Re: Cobalt compatible distribution

Hi. I don't think any distro ships with a cobolt-enabled kernel. If compiling a kernel is too big a task, don't bother with writing any drivers. Alec

Re: Intel Turbo Mode

The kernel is a bit trigger-happy with Kconfig options, I've done similar things with other drivers. The driver developers seriously need to tune their usage of ifdef a bit. I say merge it. Alec

Re: [ANNOUNCE] Xenomai 3.0.8 released

Lookin good! Hope everyone had a happy new year! A great release to start off the great year of 2019! Cheers! Alec

Re: [I-PIPE] ipipe-core-4.14.89-x86-2 released

Hello, I'm not sure if the patch generator was believed to be fixed yet or not, but files for other arches (arch/arm/include/asm/arch_timer.h) are still included. If this still being worked on, disregard this message. Alec

Re: [I-PIPE] ipipe-core-4.9.135-x86-7 released

Hey Philippe, thank you! Alec

Re: [I-PIPE] ipipe-core-4.9.135-x86-7 released

Sounds like a plan, thank you for looking into this! I'm excited! Alec