Hi,
- Chris McCormick chris@mccormick.cx [2018-07-11 10:41]:
Hi,
On 11/07/18 04:13, Peter P. wrote:
Furthermore, does anyone know if the 'tc' user can be added to an audiogroup, whose permissions could be elevated through /etc/security/limits.conf (currently not present in piCore).
I think you could do this by settings the rtprio limit directly in: /opt/bootscript.sh
It seems that sysctl and ulimit can't set this but maybe this will help:
https://serverfault.com/questions/889635/seting-rtprio-limit-in-system-witho...
Thanks for that link! In this case I could run the patch as root anyway I think.
Interestingly, starting pd from /opt/bootlocal.sh as root at startup will make Pd use all of the CPU and hence produce stuttering audio. When I change the corresponding line in /opt/bootlocal.sh to start as user tc sudo -u tc /home/tc/myPdStartupScript.sh Pd runs normally.
This might be off-topic, but has anyone managed to create a persisntent home directory inside /dev/mmcblk0p2 (the ext2/3 partition created by piCore itself, which I did maximize already)?
You can use the command
filetool.sh -bto backup a snapshot of the homedir to the SD card and it will be returned to that state on reboot.
This is what I read from the docs and what I am currently using. Albeit, I am having a 300MB sound file in my home dir and it being part of the filetool.sh backup immensely slows down startup as the OS has to uncompress the audiofile.
There is also a kernel boot parameter to make the homedir persist automatically:
This is the method I am trying to use with a directory inside /dev/mmcblk0p2 (the ext2/3 partition created by piCore itself, which I did maximize to the full available space on the memory card). Possibly I have to try to shrink that partition to make space for yet another partition as dedicated /home. Any hints appreciated!
I am so happy my patch runs without dropouts on the RPi 1 and that it boots so fast!
I'm a huge fan of this platform too! I had the original RPi 1 rendering mod files to Alsa out and only using 4% CPU.
Probably OT but I gave a talk about my experience with piCore last night at the local Linux users group:
Nice, great talk!
P