29 lines
1,019 B
Text
29 lines
1,019 B
Text
The new JACK server comes with a DBUS control interface:
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$ jack_control help
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$ jack_control ds oss
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$ jack_control dp
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$ jack_control eps realtime False
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$ jack_control start
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Only root can grant real-time priority to processes for now, using rtprio(1).
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Upcoming FreeBSD releases will have a MAC policy with a realtime user group.
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Memory locking has to be allowed in /etc/login.conf or ~/.login_conf. Set the
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resource limit ":memorylocked=unlimited:" and don't forget to run
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# cap_mkdb /etc/login.conf
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It's still possible to start JACK server as an RC service for a dedicated user.
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Note that only one JACK server can be run at a time. An /etc/rc.conf example:
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jackd_enable="YES"
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jackd_user="joe"
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jackd_rtprio="YES"
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jackd_args="-R -doss -r48000 -p1024 -n1 -w16 \
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--capture /dev/dsp0 --playback /dev/dsp0"
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Official JACK example clients and tools are available as jack-example-tools.
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JACK 1.9.22 introduces a latency correction fix.
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Latency correction parameters have to be measured again after an update.
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