Latency test

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11 Jan 2023 23:32 #261641 by NTULINUX
Replied by NTULINUX on topic Latency test
Yes, audit=0 should be specified as a kernel parameter too.. Debian enables so much stuff that I forget all the things that need to be disabled.. audit=0 effectively disables things like Apparmor and SELinux.
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12 Jan 2023 05:35 - 12 Jan 2023 06:21 #261661 by Stanislavz
Replied by Stanislavz on topic Latency test
  All night glxgears with youtube. But only one testing thread.. otherwise we have two processes on core optimised to run only one...
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Last edit: 12 Jan 2023 06:21 by Stanislavz.
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12 Jan 2023 17:15 #261716 by Stanislavz
Replied by Stanislavz on topic Latency test

Would you be interested in trying my Gentoo image + installer? I'm working on a custom built Linux system with the entire userspace + kernel tuned specifically for low-latency, no speed step, no power management, no sleep/hibernate/suspend, no power save etc.. Lots of things stripped out. Debian and other distros only lets you go so far, so I've taken the initiative to try and build the best possible image for LinuxCNC and lowest latency. All that governor/power/CPU stuff should not even exist on a real-time kernel.
 

Ok. I have visited some friends, got 120gb old ssd for testing.
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14 Jan 2023 20:58 #261982 by NTULINUX
Replied by NTULINUX on topic Latency test

Would you be interested in trying my Gentoo image + installer? I'm working on a custom built Linux system with the entire userspace + kernel tuned specifically for low-latency, no speed step, no power management, no sleep/hibernate/suspend, no power save etc.. Lots of things stripped out. Debian and other distros only lets you go so far, so I've taken the initiative to try and build the best possible image for LinuxCNC and lowest latency. All that governor/power/CPU stuff should not even exist on a real-time kernel.
 
Ok. I have visited some friends, got 120gb old ssd for testing.


Awesome! Just to make sure I have all your hardware together, can you post your `lspci -k` and `lsmod` ?

Thanks!
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14 Jan 2023 21:38 - 14 Jan 2023 21:40 #261987 by Stanislavz
Replied by Stanislavz on topic Latency test
Will do it tomorrow. Today finished upgrading my controller. Or not.. it is newer ends. Removed small add on panel.. new lcd was smaller, so i got some place for start stop buttons and leds..
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Last edit: 14 Jan 2023 21:40 by Stanislavz.

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14 Jan 2023 21:52 #261989 by rodw
Replied by rodw on topic Latency test
A very nice console :)
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15 Jan 2023 15:55 - 15 Jan 2023 15:55 #262046 by Stanislavz
Replied by Stanislavz on topic Latency test
Commands result
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Last edit: 15 Jan 2023 15:55 by Stanislavz.

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16 Jan 2023 00:27 #262079 by NTULINUX
Replied by NTULINUX on topic Latency test
Thank you for that! So pretty standard stuff, any idea what you're using the AT24 EEPROM driver for?

RAID/LVM will not be included, I see this in your list. I will add BTRFS (also in your list) and F2FS support probably later, right now it's XFS and EXT4 only.
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16 Jan 2023 05:46 #262099 by Stanislavz
Replied by Stanislavz on topic Latency test

Thank you for that! So pretty standard stuff, any idea what you're using the AT24 EEPROM driver for?
 

Bios acces for uefi modifications ? Will try to find it.

RAID/LVM will not be included, I see this in your list. I will add BTRFS (also in your list) and F2FS support probably later, right now it's XFS and EXT4 only.

Ok.
 

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21 Jan 2023 11:32 - 21 Jan 2023 11:34 #262569 by NTULINUX
Replied by NTULINUX on topic Latency test
I was eager to get BTRFS and F2FS squared away...

Installer now supports BTRFS, EXT4, F2FS and XFS.

1 file changed, 402 insertions(+), 32 deletions(-)
Last edit: 21 Jan 2023 11:34 by NTULINUX.
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