64 Studio 3.0 alpha kernel 2.6.26 (Was 2.6.28)

As per my thread http://www.64studio.com/node/1314 **It will run from the Hardy repositories though for all but the cutting edge multimedia and 64 Studio related packages.** Is it possible to add Mixxx 1.7 in there ?

64 Studio 3.0 alpha is currently on 2.6.21 but the beta should be on either 2.6.26 or 2.6.28 Again, 64 Studio will not BE ubuntu, but neither would it be debian. It will run from the Hardy repositories though for all but the cutting edge multimedia and 64 Studio related packages.

I already have a fully functional ubuntu 8.10 x86-64 install so I was wondering if anyone has already tried installing linux-image-2.6.26-1-multimedia-amd64 on intrepid 64? Will it work or will it trash my install? Would I need to revert to Hardy to use it? Has anyone compared Intrepid 64 with linux-image-2.6.26-1-multimedia-amd64 kernel to 64studio 2.1 AMD64? Now that Lenny has been released (which is also using 2.6.26), is 64Studio 3.0 going to be based on Lenny or Hardy?

Daniel wrote: Hi all, Good results from the stock kernel mentioned on the linux-audio-tuning list, but there is a crucial tweak required: Cheers! Daniel = = = = Cheers! dave

After installing the new 2.6.26 kernel, I took a look at Nvidia website and the latest for my graphics card (GeForce 6150SE) is Version: 180.22 Operating System: Linux x86 Release Date: January 8, 2009 but there's is no mention of realtime kernel or even low latency as Nvidia has "sometimes" mentioned in the past. they do however state: **** Fixed an nvidia-settings crash when xorg.conf contains Device and Screen sections but no ServerLayout section. Fixed a problem parsing the monitor sync range X config file options. Improved compatibility with recent Linux kernels. **** I guess this would be helpful for those who have more detailed device and screen sections as well as sync sections for their monitors (as i do) I am going to dive into this new driver as the 177.XX didn't do squawt with the new kernel. hope this helps Nivida users MiCK

installing Linux-Image/headers/kbuild/ headers-common and will report back as to the overall performance. what exactly do you as developers need from my stats? jack output/cpu load etc? cheers MiCK Edit::: (just rebooted) after reboot, I had to kill the Nvidia Driver. Tried the "nv" but display had the "shakes" so i changed it to "vesa" and all is good and up to testing again! SO far this is what i have..... Jack settings: frames:128 sample rate: 44100 Buffer: 2 latency: 5.8 ms DSP load: (on idle) 1.2% With Ardour open: a 7 tracks project loaded: DSP 62% buffers: p:100% c:100% BUT ardour is running at 2.9ms with xruns right at startup Reset Jack to frames: 256 ardour is stable and reporting a 5.8ms @44100 DSP load: 56% thats what i have right now.. let me know what else you might need MiCK

Installed 2.6.26 on clean install 64studio 2.1 etch. (experimental/install/test) You can't install the linux-headers because it depends linux-kbuild-2.6.26 and this results in unmet dependencies. linux-kbuild-2.6.26: Depends libc6 (>=2.7-1) but 2.3.6.ds1-13etch5 is to be installed. So you will need to be dist-upgraded to lenny to install the headers. Installing linux-image-2.6.26 is fine, but for now you wont be able to install nVidia binary drivers. If you add the lenny sources and try to install the headers, libc6 will be upgraded and this will remove important packages. My sound is fine 2.1/etch using 2.6.26 on this intel computer but I'm on the onboard intel graphics system, which is also working fine. Installing the 2.6.26 on 64studio 2.1 etch will fix some problems, but it is very untested. This test was an experiment to see the results, you would be better installing the 3.0 alpha if you can. The more reports posted will see a quicker and more stable final release. Cheers! dave

Can this topic be renamed, to change 2.6.28 to 2.6.26. My original link to the 2.6.28 kernel could also be removed as the 2.6.26 is the kernel we are using now. Cheers! dave

Getting very nice results here also, best yet of all the latest kernels I've tested. Edit: I have installed 2.6.26 on my 64studio etch/lenny. qjackctl max 9% with ardour 2.7 running. I've just had time for a quick check, but all seems fine here at first impressions. It's running more or less the same as 3.0 alpha does with this kernel. I'll report if I find anything more. Cheers! dave

The 2.6.26 kernel is behaving quite well, and I am typing this while doing the performance run (Ardour + Jamin) at low(ish) latency and only 30% CPU usage. Is is surpassing the 2.6.21 multimedia kernel at the moment. Great work!

Free wrote: Hi all, according to my own tests and to the report on the list, I think kernel 2.6.28 is not yet stable enough, rt/latency-wise. So I've just finished packaging a new 2.6.26, with the latest RT patch, and a further patch recently posted to the linux-rt mailing list, which fixes an ALSA midi problem. Full images and headers are available for both i386 and amd64, just add: deb http://apt.64studio.com/backports hardy-backports main to your sources and run: apt-get install linux-image-2.6.26-1-multimedia-686 apt-get install linux-headers-2.6.26-1-multimedia-686 for i386 or: apt-get install linux-image-2.6.26-1-multimedia-amd64 apt-get install linux-headers-2.6.26-1-multimedia-amd64 for amd64, all as sudo. Ciao! Free Cheers! dave

I finally had chance to test performance on my older 32bit laptop Centrino Duo. 2.1 with 2.6.21-multimedia works well, with Ardour and Jamin running at 32 % and no x-runs the same setup with the new kernel starts dropping x-runs just after starting jamin. 3.0 Alpha as is also produces x-runs, and with the new kernel even more... I'll have to stay on 2.1 for the moment on my laptop. My 64bit hardware runs nicely on the 2.1 upgraded to 3.0 alpha at the moment. 2.6.28 might be ok, but is is still not as powerful as our 2.6.21 kernel in terms of realtime performance. Cheers, Q