sysctl.conf

## SECURITY
security.bsd.see_jail_proc=0
security.bsd.unprivileged_proc_debug=0
kern.randompid=1

## I/O TUNING
vfs.usermount=1
vfs.read_max=128
vfs.write_behind=0
kern.coredump=0
kern.filedelay=15
kern.dirdelay=14
kern.metadelay=13

## MISC TUNING
kern.evdev.rcpt_mask=12

## NETWORK
net.inet.tcp.blackhole=2
net.inet.udp.blackhole=1
net.inet.tcp.syncache.rexmtlimit=0
net.inet.tcp.syncookies=0
net.inet.ip.redirect=0
net.inet.icmp.drop_redirect=1
net.inet.tcp.drop_synfin=1
net.inet.tcp.fast_finwait2_recycle=1
net.inet.tcp.icmp_may_rst=0

## DESKTOP
kern.sched.preempt_thresh=224
kern.sched.slice=3
kern.sched.steal_thresh=1
kern.ipc.shm_allow_removed=1
kern.ipc.shm_use_phys=1

## AUDIO CONFIG
kern.timecounter.alloweddeviation=0
hw.usb.uaudio.buffer_ms=2
hw.snd.latency=0
## Use your own default unit
hw.snd.default_unit=7
#hw.snd.default_auto=0

## AUDIO QUALITY
## Change pcm.7 by your own interface
## If you want Bitperfect mode just enable it and disable vchanmode and vchanrate parameters
dev.pcm.7.play.vchanmode=passthrough
dev.pcm.7.play.vchanrate=48000
dev.pcm.7.rec.vchanrate=48000
dev.pcm.7.play.vchanformat=s16le:2.1
#dev.pcm.7.bitperfect=1
hw.snd.feeder_rate_quality=4