Thank you again for all the info. It's been very useful and of great clarification to me.
raboof wrote:are you on the latest version of the script?
Aaah, nope, sorry, just noticed. I found that script a long time ago, and kept it in my computer; I didn't know that it was an "alive" project, and was afraid of not finding it later when I needed it, as I use it only the times I have to reinstall my audio distro (which I do as seldom as possible). I've tested the latest version now, and it works with both versions of the perl command (with or without the -I option). Other than that, the outputs are the same as in the older version.
Thank you for the addition, I haven't used GitHub in my life, but I finally figured out that I had to copy that piece of code and paste it in the script from line 73 (correct me if I'm wrong). The script says "did not find multiple, ok", so great on that side...
CrockoDuck wrote:Aw no! I will perhaps make a better one in the future.
That would be great, I understand that you gods of Terminal only need an approximation to the thing, you can skip steps... But we poor power users sometimes thank being taken by the hand, command by command...
thetotalchaos wrote: just out of curiosity - What are those extra checks, that appear if you give the IRQ value properly?
As I mentioned at the bottom of post #4 of this thread, other than removing the "**set $SOUND_CARD_IRQ..." message, the script shows no change, no additional checks -I was intrigued too
-. I apologize if my previous answer was not elaborate or emphatic enough. I requote for convenience:
Nachei wrote:...it works, but all it does is suppressing the message "** Set $SOUND_CARD_IRQ ..." at the bottom. Does it mean there are no more tests available for my machine, or should I do something else?
With this, I've gone through the whole QuickScan script and everything shows "good", except "Kernel with Real-Time Preemption", which, if I'm correct, is no longer needed (I'm optimizing Ubuntu Studio 19, which has a low latency kernel).
In addition to this, as my computer has SSD, I applied this optimization for SSD https://linuxmusicians.com/viewtopic.php?t=14970
by Crocoduck I found via his site (https://thecrocoduckspond.wordpress.com/2016/05/15/a-look-at-ubuntu-studio-16-04/
. Great article, by the way):
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="threadirqs quiet elevator=noop"
Stability has been greatly improved, and I can now record at 5.8ms latency with Guitarix and Reaper, but I still get occasional pops and Xruns, which I don't know where they come from. My laptop is 2 years old, it has 16Gb Ram, SSD and an i7 processor (2.70GhZ, 2 cores, 4 threads), and yet I've had these pops both in this distro and its predecessor Ubuntu Studio 16 (never had this problem with my previous 32 bits machine). Could you suggest what I could test next, for further optimization? Thank you.