forked from unom/punktfunk
enricobuehler
52df9c59af
A new shared drop-in, packaging/linux/50-punktfunk-nice.conf (user@.service.d, LimitNICE=-15), raises the user-session nice hard limit so the direct setpriority() path works on rtkit-less boxes — a limit, not a grant, effective from the next login. Shipped by rpm (%files + install, flows into the Bazzite sysext via rpm2cpio), Arch, and deb; the Steam Deck installer writes it to /etc/systemd/system/user@.service.d instead (SteamOS /usr is read-only), following its existing sudo-to-/etc pattern. rpm and deb gain a weak Recommends: rtkit and Arch an optdepends hint — with rtkit the fix needs no relogin at all. The NixOS module instead sets security.rtkit.enable = mkDefault true (rtkit is not a given there; mkDefault keeps it operator-overridable). It remains true on every channel that the host binary must never carry a file capability — the spec's no-caps note now names the two fallback rungs instead of calling the thread nice a best-effort no-op.
14 lines
799 B
Plaintext
14 lines
799 B
Plaintext
# Punktfunk: let the streaming host's data-plane threads renice themselves.
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#
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# The host raises its capture/encode/send and audio threads to nice -10/-5 so a CPU-saturating
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# game (or its shader-compile storm at launch) cannot deschedule them mid-stream. That call needs
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# CAP_SYS_NICE or a raised RLIMIT_NICE — and the host binary must never carry a file capability
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# (it would make the process unidentifiable to KWin and kill desktop streaming), so the limit is
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# the right lever. Desktops with RealtimeKit don't need this file (the host falls back to rtkit);
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# it covers rtkit-less installs, from the next login onward.
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#
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# This raises only the LIMIT for user sessions. Nothing is reprioritized by itself: a process
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# still has to call setpriority(), exactly as before.
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[Service]
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LimitNICE=-15
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