Sandy Rutherford wrote:
On Mon, 13 Dec 2004 09:59:51 -0600,
Nikolas Britton <[EMAIL PROTECTED]> said:
> In FreeBSD 5.3 you can change the buffersize by adding
> hint.pcm.0.buffersize="foo" to /boot/loader.conf, have you try'ed this
> with 4.x?
Yes. Here are the contents of my /boot/loader.conf file:
[szamoca:6] cat /boot/loader.conf
# -- sysinstall generated deltas -- #
userconfig_script_load="YES"
hint.pcm.0.buffersize=8192
I'm not sure if it makes a difference but 8192 is not in "quotes" like I
have in my working example and man device.hints says it should look like
this: hint.driver.unit.keyword="value", also, have you tried playing
with targetirqrate?
http://www.freebsd.org/cgi/man.cgi?query=snd&apropos=0&sektion=0&manpath=FreeBSD+5.3-RELEASE+and+Ports&format=html
spectra# more /boot/loader.conf
## Video Support
nvidia_load="YES"
linux_load="YES"
#vesa_load="YES"
## Sound Support
#sound_load="YES"
#snd_emu10k1_load="YES"
#snd_driver_load="YES"
hw.snd.maxautovchans=4
hw.snd.targetirqrate=48
hint.pcm.0.buffersize="8192"
## Misc.
loader_color="YES" #Color Boot Menu
spectra# sysctl hw.snd
hw.snd.targetirqrate: 48
hw.snd.report_soft_formats: 1
hw.snd.verbose: 1
hw.snd.unit: 0
hw.snd.maxautovchans: 4
hw.snd.pcm0.buffersize: 8192
hw.snd.pcm0.vchans: 0
However,
[szamoca:7] sysctl -a | grep snd
hw.snd.targetirqrate: 32
hw.snd.report_soft_formats: 1
hw.snd.verbose: 1
hw.snd.maxautovchans: 0
hw.snd.pcm0.buffersize: 4096
hw.snd.pcm0.vchans: 4
So it seems to have ignored the entry in loader.conf. No errors or
warnings were generated during boot. It just ignored the entry.
Also, here is my /dev/sndstat:
[szamoca:8] cat /dev/sndstat
FreeBSD Audio Driver (newpcm)
Installed devices:
pcm0: <SB16 DSP 4.02> at io 0x220 irq 5 drq 1:0 bufsz 4096d (1p/1r/4v channels
duplex)
Also,
[szamoca:9] uname -a
FreeBSD szamoca.krvarr.bc.ca 4.10-RELEASE FreeBSD 4.10-RELEASE #35: Sat Sep 18 02:19:02 PDT 2004 [EMAIL PROTECTED]:/usr/src/sys/compile/SZAMOCA i386
> Sandy Rutherford wrote:
>> Is it possible to change the sysctl variable hw.snd.pcm0.buffersize
>> (DMA buffer size for the soundcard) in FreeBSD 4.10? I know that in
>> 5.x this is changed in devices.hints. I'm guessing that something in
>> the kernel config file will do the job, but haven't been able to
>> figure out what.
>> ....
Thanks,
Sandy
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