overview for ludrol

Canvas Stats has been updated for 2026 by ludrol in c/canvas@toast.ooo

[-] ludrol@programming.dev 1 points 1 month ago

I didn't remember that I participated in 2025 canvas as I didn't make a design on it. Technically I participated in all of them then, but on different alts.

[Help] Audio crackles when CPU is under heavy load and music is in the background by ludrol in c/linux4noobs@programming.dev

[-] ludrol@programming.dev 1 points 2 months ago* (last edited 2 months ago)

I tried to force a clanker to help me, but it can only get me so far.

I have run sudo perf sched record -- sleep 5 with spotify and stress-ng and without easy effects but it didn't really tell about what was blocking the thread, or what could be the problem.

 -------------------------------------------------------------------------------------------------------------------------------------------
  Task                  |   Runtime ms  |  Count   | Avg delay ms    | Max delay ms    | Max delay start           | Max delay end          |
 -------------------------------------------------------------------------------------------------------------------------------------------
  TaskCon~ller #4:(2)   |      0.083 ms |        3 | avg:   8.605 ms | max:  22.177 ms | max start:  2225.534477 s | max end:  2225.556654 s
  dex-thread-pool:(3)   |      6.973 ms |        7 | avg:   8.459 ms | max:  22.054 ms | max start:  2227.176387 s | max end:  2227.198441 s
  spotify:(5)           |    390.149 ms |      855 | avg:   8.354 ms | max: 198.827 ms | max start:  2227.285930 s | max end:  2227.484757 s
  WRScene~derLP#1:5028  |      2.360 ms |      194 | avg:   7.097 ms | max:  76.383 ms | max start:  2226.890377 s | max end:  2226.966759 s
  ThreadPoolServi:8864  |      0.101 ms |        3 | avg:   6.935 ms | max:  20.742 ms | max start:  2226.356434 s | max end:  2226.377175 s
  Media:8854            |     53.526 ms |      394 | avg:   6.881 ms | max: 107.856 ms | max start:  2226.212405 s | max end:  2226.320261 s
  VizCompositorTh:8780  |     77.461 ms |      562 | avg:   6.859 ms | max:  83.443 ms | max start:  2227.253999 s | max end:  2227.337441 s
  Core Thread:8688      |      7.656 ms |      105 | avg:   6.800 ms | max:  77.954 ms | max start:  2229.299488 s | max end:  2229.377442 s
  Connect Discove:8725  |      0.286 ms |        8 | avg:   6.768 ms | max:  16.469 ms | max start:  2227.202786 s | max end:  2227.219255 s
  Network Thread:8708   |      6.427 ms |       76 | avg:   6.677 ms | max:  40.636 ms | max start:  2229.901403 s | max end:  2229.942039 s
  WRScene~ilder#1:5027  |      3.435 ms |      211 | avg:   6.582 ms | max:  79.265 ms | max start:  2226.887473 s | max end:  2226.966738 s
  File Streamer I:8711  |      9.539 ms |      100 | avg:   5.854 ms | max:  44.024 ms | max start:  2227.061508 s | max end:  2227.105532 s
  ThreadPoolForeg:(6)   |      5.587 ms |       59 | avg:   5.745 ms | max:  32.582 ms | max start:  2225.737484 s | max end:  2225.770066 s
  KIO::WorkerThre:(2)   |      1.832 ms |       22 | avg:   5.452 ms | max:  20.065 ms | max start:  2229.568516 s | max end:  2229.588581 s
  Desktop EventSe:8689  |      0.595 ms |        1 | avg:   5.057 ms | max:   5.057 ms | max start:  2225.703380 s | max end:  2225.708437 s
  spotify:cs0:8750      |     15.509 ms |      245 | avg:   5.056 ms | max:  51.215 ms | max start:  2227.051346 s | max end:  2227.102561 s
  VideoFrameCompo:8855  |     29.563 ms |      337 | avg:   4.979 ms | max:  47.150 ms | max start:  2227.483466 s | max end:  2227.530616 s
  WRRende~ckend#1:5029  |     18.610 ms |      336 | avg:   4.894 ms | max:  69.204 ms | max start:  2227.019314 s | max end:  2227.088517 s
  Chrome_IOThread:(2)   |      9.801 ms |      132 | avg:   4.686 ms | max:  35.030 ms | max start:  2229.786608 s | max end:  2229.821638 s
  glean.dispatche:4896  |      7.905 ms |      379 | avg:   4.599 ms | max:  71.021 ms | max start:  2226.969815 s | max end:  2227.040835 s
  WebExtensions:5078    |     83.091 ms |      254 | avg:   3.902 ms | max:  43.411 ms | max start:  2227.657268 s | max end:  2227.700679 s
  Chrome_ChildIOT:(5)   |     38.349 ms |      940 | avg:   3.864 ms | max:  57.356 ms | max start:  2225.249786 s | max end:  2225.307142 s
  ThreadPoolSingl:(2)   |     37.049 ms |      570 | avg:   3.811 ms | max:  58.063 ms | max start:  2227.475541 s | max end:  2227.533604 s
  TaskCon~ller #1:(2)   |      5.080 ms |       83 | avg:   3.688 ms | max:  34.766 ms | max start:  2227.041677 s | max end:  2227.076443 s
  TaskCon~ller #0:(4)   |     17.486 ms |      162 | avg:   3.036 ms | max:  39.163 ms | max start:  2227.452333 s | max end:  2227.491496 s
  Audio Driver Th:8718  |     15.663 ms |      513 | avg:   2.887 ms | max:  48.186 ms | max start:  2227.368253 s | max end:  2227.416439 s
  firefox:cs0:4943      |      4.029 ms |       56 | avg:   2.884 ms | max:   9.819 ms | max start:  2228.624509 s | max end:  2228.634328 s
  Renderer:4966         |     16.666 ms |      133 | avg:   2.751 ms | max:  36.844 ms | max start:  2227.794477 s | max end:  2227.831321 s
  bazaar:8465           |      0.190 ms |        3 | avg:   2.720 ms | max:   8.111 ms | max start:  2227.223328 s | max end:  2227.231439 s
  IPC I/O Parent:4898   |      5.250 ms |      206 | avg:   2.573 ms | max:  22.691 ms | max start:  2227.468762 s | max end:  2227.491453 s
  Media Mixer Ren:8882  |     39.110 ms |      478 | avg:   2.484 ms | max:  39.760 ms | max start:  2229.637725 s | max end:  2229.677485 s
  mpris-proxy:2576      |      0.648 ms |        5 | avg:   2.477 ms | max:   5.067 ms | max start:  2226.065870 s | max end:  2226.070938 s
  JS Watchdog:(5)       |      0.480 ms |       21 | avg:   2.434 ms | max:  23.796 ms | max start:  2226.863646 s | max end:  2226.887442 s
  SteamUIWatchdog:4443  |      0.025 ms |        1 | avg:   2.391 ms | max:   2.391 ms | max start:  2229.533194 s | max end:  2229.535585 s
  DOM Worker:15552      |      4.313 ms |       28 | avg:   2.111 ms | max:   8.721 ms | max start:  2225.547973 s | max end:  2225.556694 s
  Compositor:(2)        |    125.776 ms |     2106 | avg:   2.076 ms | max: 119.343 ms | max start:  2229.776914 s | max end:  2229.896257 s
  Timer:(10)            |      8.823 ms |      416 | avg:   2.054 ms | max:  42.432 ms | max start:  2226.970019 s | max end:  2227.012451 s
  dolphin:9296          |     31.250 ms |      117 | avg:   1.963 ms | max:  21.491 ms | max start:  2228.605754 s | max end:  2228.627245 s
  TaskCon~ller #3:(2)   |      1.196 ms |       35 | avg:   1.848 ms | max:  22.169 ms | max start:  2225.534467 s | max end:  2225.556635 s
  TaskCon~ller #2:(2)   |      3.287 ms |       50 | avg:   1.644 ms | max:  22.594 ms | max start:  2225.534012 s | max end:  2225.556605 s
  pipewire-loop:8884    |     20.933 ms |      511 | avg:   1.583 ms | max:  42.681 ms | max start:  2227.302468 s | max end:  2227.345149 s

[…]

  pipewire-pulse:3296   |     19.050 ms |      727 | avg:   0.123 ms | max:   0.994 ms | max start:  2229.906447 s | max end:  2229.907441 s

https://pastebin.com/nZnGf2fP

clanker has seen cyclictest and sudo trace-cmd record -e sched -e irq -e timer -e workqueue -e power -e signal so I tried running that

sudo cyclictest --mlockall --smp --priority=80 --interval=200 --breaktrace=1000
# /dev/cpu_dma_latency set to 0us
policy: fifo: loadavg: 8.00 2.89 2.49 24/1847 16763          

T: 0 (16700) P:80 I:200 C: 144467 Min:      6 Act:   13 Avg:   11 Max:     376
T: 1 (16701) P:80 I:700 C:  41270 Min:      7 Act:   15 Avg:   11 Max:      98
T: 2 (16702) P:80 I:1200 C:  24071 Min:      7 Act:   12 Avg:   12 Max:     130
T: 3 (16703) P:80 I:1700 C:  16989 Min:      8 Act:   15 Avg:   12 Max:     107
T: 4 (16704) P:80 I:2200 C:  13126 Min:      7 Act:   19 Avg:   12 Max:     104
T: 5 (16705) P:80 I:2700 C:  10694 Min:      8 Act:   20 Avg:   12 Max:      58
T: 6 (16706) P:80 I:3200 C:   9022 Min:      8 Act:   16 Avg:   13 Max:      56
T: 7 (16707) P:80 I:3700 C:   7802 Min:      8 Act:   12 Avg:   13 Max:     101
T: 8 (16708) P:80 I:4200 C:   6872 Min:      8 Act:   10 Avg:   12 Max:      27
T: 9 (16709) P:80 I:4700 C:   6140 Min:      9 Act:   12 Avg:   13 Max:      47
T:10 (16710) P:80 I:5200 C:   5549 Min:      9 Act:   15 Avg:   13 Max:      83
T:11 (16711) P:80 I:5700 C:   5061 Min:      9 Act:   14 Avg:   14 Max:      31
# Thread Ids: 16700 16701 16702 16703 16704 16705 16706 16707 16708 16709 16710 16711
# Break thread: 16705
# Break value: 3337

I have extracted the scheduler events between ~8ms delay of 16705 thread, but I don't know how to tackle it.

https://pastebin.com/D4bbzqT7

[Help] Audio crackles when CPU is under heavy load and music is in the background by ludrol in c/linux4noobs@programming.dev

[-] ludrol@programming.dev 1 points 2 months ago* (last edited 2 months ago)

I have read through the article and I am 99% sure it's schedule issue

after dozens of seconds without load I get this output:

sudo cyclictest --mlockall --smp --priority=80 --interval=200 --distance=0             
# /dev/cpu_dma_latency set to 0us
policy: fifo: loadavg: 4.86 7.85 6.59 6/2385 19280             

T: 0 (17848) P:80 I:200 C:2016327 Min:      3 Act:   29 Avg:   16 Max:    3939
T: 1 (17849) P:80 I:200 C:2016322 Min:      3 Act:   25 Avg:   15 Max:    3910
T: 2 (17850) P:80 I:200 C:2015361 Min:      4 Act:   32 Avg:   16 Max:    4195
T: 3 (17851) P:80 I:200 C:2016059 Min:      4 Act:   26 Avg:   16 Max:    4057
T: 4 (17852) P:80 I:200 C:2016323 Min:      3 Act:   31 Avg:   15 Max:     495
T: 5 (17853) P:80 I:200 C:2016278 Min:      4 Act:   23 Avg:   16 Max:    4686
T: 6 (17854) P:80 I:200 C:2016153 Min:      4 Act:   23 Avg:   16 Max:    4259
T: 7 (17855) P:80 I:200 C:2016166 Min:      4 Act:   28 Avg:   18 Max:    3922
T: 8 (17856) P:80 I:200 C:2015946 Min:      4 Act:   28 Avg:   16 Max:    3724
T: 9 (17857) P:80 I:200 C:2015942 Min:      3 Act:   40 Avg:   16 Max:    4621
T:10 (17858) P:80 I:200 C:2015718 Min:      3 Act:   29 Avg:   17 Max:    3520
T:11 (17859) P:80 I:200 C:2015339 Min:      4 Act:   26 Avg:   16 Max:    2046

What are the most simple free engines and tools for a beginner? by ludrol in c/gamedev@programming.dev

[-] ludrol@programming.dev 0 points 9 months ago

IDK what are you about. I have made couple of game jams with it and it was fine engine.

Robocraft servers emu v1.0.0 by ludrol in c/opensource@programming.dev

[-] ludrol@programming.dev 1 points 9 months ago

Is this different than robocraft 2015 project?