Lennart Poettering wrote On 23-02-2009 04:05: > > Yes, you can use alsa-time-test for this. When you run it it will spin > in a busy loop always querying system and sound card time. The first > column contains the system time in ?s. Simply calculate the difference > between subsequent lines. If the differences get too large > (i.e. multiple ms) something is fishy. If they get as large as 210 ms > (i.e. 210000 ?s) then things are really bad. The difference in the first column between subsequent lines is 20~24 when the load average is ~0.04 and the output of the test is *not* redirected to a file. If I don't redirect the output, I get the famous assertion after nearly 1 second of execution: 798848 798845 118321 4396 19 4 1 3 798872 798870 118344 4397 19 4 1 3 798897 798894 118367 4397 19 4 1 3 817175 817172 136643 5202 -786 4 1 3 If I redirect it to a file, it keeps running and running without assertion. And finally: ozan at cyclope tests $ head -n1 /proc/asound/card?/codec* Codec: Analog Devices AD1986A ozan at cyclope tests $ cat /proc/asound/pcm 00-00: AD198x Analog : AD198x Analog : playback 1 : capture 1 00-01: AD198x Digital : AD198x Digital : playback 1 Thanks. -- Ozan ?a?layan
