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Jackdbus wakes up every 200ms #962

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StefanBruens opened this issue Dec 13, 2023 · 0 comments · May be fixed by #963
Open

Jackdbus wakes up every 200ms #962

StefanBruens opened this issue Dec 13, 2023 · 0 comments · May be fixed by #963
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@StefanBruens
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Even when jackdbus is just listening for DBus events it continuously wakes up every 200 ms.

Environment

  • JACK Version: 1.9.22
  • Operating System: Linux (openSUSE Tumbleweed 20231212)
  • Installation: Distribution packages

Steps To Reproduce

Start jackbus
Attach strace

Expected vs. actual behavior

When jackdbus is idle, it should not wake up.

Waking up, even when there are no actual events pending, shortens runtime on battery. This is especially important as jackdbus is often just running in the background.

jack2/dbus/jackdbus.c

Line 950 in 886b35c

while (!g_exit_command && dbus_connection_read_write_dispatch (g_connection, 200))

The only actual need for the timed wakeup is a pending save.
StefanBruens added a commit to StefanBruens/jack2 that referenced this issue Dec 13, 2023
@StefanBruens
jackdbus: Stop recurrent wakeups when no save is pending
fd1ac14 
Most processing happens as a result of an incoming
DBus event. The only case when a timed processing
is needed is due to an pending save.

Instead of implementing a full event loop just run the
timed loop while a save is pending, and use an
infinite timeout otherwise.

Fixes: jackaudio#962
@StefanBruens StefanBruens linked a pull request Dec 13, 2023 that will close this issue
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jackdbus: Stop recurrent wakeups when no save is pending StefanBruens/jack2
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@StefanBruens