Saturday, January 19, 2019

PDS 0.99l release

PDS 0.99l is released with the following changes

1. Fix wrong task priority issue. Now, RT(non-normal) tasks has their proper priority, can be verified by 'RT' priority shown in top/htop.

This is a bug fix release.

Enjoy PDS 0.99l for v4.20 kernel, :)

Code are available at https://gitlab.com/alfredchen/linux-pds
All-in-one patch is available too. 

18 comments:

  1. Builds/boots and works fine. Thanks!

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  2. Back from vacation and compiled nohz_full kernel from Oleksandrs git.
    Works fine on i7@work, some tome later will try gaming on Ryzen@home.
    Thanks Alfred and Oleksandr.
    Br, Eduardo

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    Replies
    1. nohz_full was no good on Ryzen@home for gaming, frame consistency was bad and it kinda/sorta microstuttered a lot, so I went for nohz_idle w/ 100Hz which was is a lot better. So I'm sticking to nohz_idle at this point.
      Br, Eduardo

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  3. I saw some previous benchmarks where PDS was comparable with MUQSS+MC. I was wondering if there are more recent benchmarks to help me choose a scheduler (for desktop use, compiling, retrogaming)?

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  4. i5 7600k, gigabyte h110m-s2, freezing when i starting dxvk-wine games ( battlefield 4, quake champions )
    in dmesg i'm not have errors

    in journalctl -xb i have only:
    pulseaudio[640]: W: [alsa-source-USB Audio] asyncq.c: q overrun, queuing locally
    pulseaudio[640]: W: [alsa-source-USB Audio] ratelimit.c: 4170 events suppressed
    acpid[426]: client 452[0:0] has disconnected

    and 3 or 4 cores start to load at 100% (in turn)

    on muqss i'm not have problems!(sry for bad english)

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    Replies
    1. 100hz, nohz_full

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    2. Most common suggestion for wine and gaming will be try different yield_type.

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    3. I use 1000hz, CONFIG_NO_HZ_IDLE. And when gaming i use yield_type=2, rr_interval=1

      I have huge issues with running either MuQSS or PDS with CONFIG_NO_HZ_FULL for some reason, as i think things seem to still be dependent on kernel ticks (perhaps wine more than anything?).

      If you are interested Mr. Anonymous, you can take a look at a example config i made on my github kernel repo for pds and 4.20 kernel. https://github.com/SveSop/kernel_cybmod and look at patch 0014_config.patch.

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  5. @Alfred Chen, @Sveinar Søpler, thanks guys! yield_type=2, rr_interval=1 helped me!

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    Replies
    1. i'm tested bf4 dxvk 0.96, wine-tkg-4.0, + esync + virtual desktop
      in singleplayer
      muqss(rqshare=smt) 90-102fps ( all cores load 100% )
      pds-mq 83-98 ( all cores load max 75-90~ )

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    2. Please give more details: NOHZ_FULL or NOHZ_IDLE?
      Br, Eduardo

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  6. NOHZ_FULL, 1000hz

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    Replies
    1. Please try NOHZ_IDLE, from my experience latest PDS / kernel version was not particulary good at gaming, I was getting microstutters a lot and fps was not good w/ NOHZ_FULL...
      At least it might help Alfred to figure out the circumstances of this behaviour and I'll see whethwr this is universally true at this version of PDS.
      Br, Eduardo

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    2. It is somewhat confusing that ppl are just named "Anonymous", cos it sometimes looks like there is just one person speaking... to himself :)

      I did some testing with the -ck patchset, and ref Con Kolivas the -ck patchset should be configured with NO_HZ_IDLE:
      ---
      I mean intrinsically it doesn't depend on ticks as such, but the configuration of ticks should be nohz idle as you correctly figured out.
      ---
      I do however see that Arch -ck kernel from aur is configured with NO_HZ_FULL. This does not immediately mean it is "the right thing to do".

      Testing PDS vs MuQSS on 4.19 kernel, it seemed as PDS > MuQSS in performance. So far from my testing with 4.20 MuQSS (-ck) is slightly ahead of PDS when it comes to wine gaming atleast. Very minor differences found from the little testing i have done tho, so i guess its "in the eyes of the beholder" :)

      What i DID conclude was atleast on my hardware i had problems with NO_HZ_FULL.

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  7. I got an error with 4.20.8-rc1

    Setup is 17180 bytes (padded to 17408 bytes).
    System is 5629 kB
    CRC ea1d1ea
    Kernel: arch/x86/boot/bzImage is ready (#1)
    ERROR: "sched_smt_present" [arch/x86/kvm/kvm-intel.ko] undefined!
    make[1]: *** [scripts/Makefile.modpost:92: __modpost]

    https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?h=linux-4.20.y&id=f4a0d4d3c1532bfa0882f7880764e56c851215fa

    Best regards

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    Replies
    1. PDS 0.99m has been released to pick up this sync-up.

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