[linux-audio-user] timer resolution

[Emanuel Rumpf]

hi

When starting rosegarden (cvs), I get the message "System timer
resolution to low".

However, AFAICT the high resolution timer is enabled (?)
How would I test it manually?
What to do?


kernel-config:
CONFIG_HPET_TIMER=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_HIGH_RES_RESOLUTION=1000


Muse output:
cannot set ticks 1024 on /dev/rtc: No right
precise timer not available
set timer ticks failed


$ cat /proc/sys/dev/rtc/max-user-freq
1024


$ ls -lh /dev/rtc
crw-rw----  1 root audio 10, 135 2005-12-15 12:27 /dev/rtc

$ cat /proc/asound/seq/timer
Timer for queue 0 : system timer
  Period time : 0.004000000
  Skew : 65536 / 65536

$ cat /proc/asound/timers
G0: system timer : 4000.000us (10000000 ticks)
  Client sequencer queue 0 : running : lost interrupts 0
P0-0-0: PCM playback 0-0-0 : SLAVE
P0-0-1: PCM capture 0-0-1 : SLAVE
P1-0-0: PCM playback 1-0-0 : SLAVE
P1-0-1: PCM capture 1-0-1 : SLAVE

$ cat /proc/driver/rtc
rtc_time        : 13:58:36
rtc_date        : 2005-12-15
rtc_epoch       : 1900
alarm           : 17:50:32
DST_enable      : no
BCD             : yes
24hr            : yes
square_wave     : no
alarm_IRQ       : no
update_IRQ      : no
periodic_IRQ    : no
periodic_freq   : 1024
batt_status     : okay