release-notes: add info about disabled QML cache
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@ -937,6 +937,19 @@
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Add udev rules for the Teensy family of microcontrollers.
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</para>
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</listitem>
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<listitem>
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<para>
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The Qt QML disk cache is now disabled by default. This fixes a
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long-standing issue where updating Qt/KDE apps would sometimes
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cause them to crash or behave strangely without explanation.
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Those concerned about the small (~10%) performance hit to
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application startup can re-enable the cache (and expose
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themselves to gremlins) by setting the envrionment variable
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<literal>QML_FORCE_DISK_CACHE</literal> to
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<literal>1</literal> using e.g. the
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<literal>environment.sessionVariables</literal> NixOS option.
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</para>
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</listitem>
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<listitem>
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<para>
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systemd-oomd is enabled by default. Depending on which systemd
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@ -298,6 +298,14 @@ Available as [services.patroni](options.html#opt-services.patroni.enable).
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- Add udev rules for the Teensy family of microcontrollers.
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- The Qt QML disk cache is now disabled by default. This fixes a
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long-standing issue where updating Qt/KDE apps would sometimes cause
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them to crash or behave strangely without explanation. Those concerned
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about the small (~10%) performance hit to application startup can
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re-enable the cache (and expose themselves to gremlins) by setting the
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envrionment variable `QML_FORCE_DISK_CACHE` to `1` using e.g. the
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`environment.sessionVariables` NixOS option.
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- systemd-oomd is enabled by default. Depending on which systemd units have
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`ManagedOOMSwap=kill` or `ManagedOOMMemoryPressure=kill`, systemd-oomd will
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SIGKILL all the processes under the appropriate descendant cgroups when the
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