Hey Maarten, with your test tool svolume-test, i get some new test results shows the patch has a positive performance improvement. please note i made some little change in svolume-test to disable "testing correctness" part, this save some time, the goal is to find out performance difference with fixed volume. i made three times test, one with patch, two without(make sure system stable during the test). i paste piece of data here, details are in attached log. Here's the stastics for format s16, channel 1~4, fixed volume, with patch: ==================== checking s16le - 1 channels - fixed volume ref: 70.4 ms (min = 70.4, max = 71.4, stddev = 0.2) asm: 2.9 ms (min = 2.9, max = 3.0, stddev = 0.0) checking s16le - 2 channels - fixed volume ref: 85.1 ms (min = 85.1, max = 85.7, stddev = 0.1) asm: 5.9 ms (min = 5.9, max = 6.2, stddev = 0.1) checking s16le - 3 channels - fixed volume ref: 127.8 ms (min = 127.7, max = 128.6, stddev = 0.2) asm: 8.9 ms (min = 8.9, max = 8.9, stddev = 0.0) checking s16le - 4 channels - fixed volume ref: 170.2 ms (min = 170.1, max = 170.9, stddev = 0.2) asm: 11.8 ms (min = 11.8, max = 11.9, stddev = 0.0) ===================== while same format/channel/fixed volume without patch: ===================== checking s16le - 1 channels - fixed volume ref: 70.4 ms (min = 70.4, max = 70.8, stddev = 0.1) asm: 2.9 ms (min = 2.9, max = 3.0, stddev = 0.0) checking s16le - 2 channels - fixed volume ref: 141.0 ms (min = 140.9, max = 142.4, stddev = 0.3) asm: 6.0 ms (min = 6.0, max = 6.1, stddev = 0.0) checking s16le - 3 channels - fixed volume ref: 213.7 ms (min = 213.5, max = 214.5, stddev = 0.2) asm: 9.0 ms (min = 8.9, max = 9.3, stddev = 0.1) checking s16le - 4 channels - fixed volume ref: 286.5 ms (min = 285.5, max = 301.0, stddev = 2.6) asm: 12.0 ms (min = 12.0, max = 12.3, stddev = 0.1) ========================== please help review the results. --xingchao -------------- next part -------------- A non-text attachment was scrubbed... Name: screenlog.1 Type: application/octet-stream Size: 9160 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20111020/adee5c8d/attachment-0001.obj>
