> > I tried using a smaller period_size (about 1/16 of hwbuf_size), snd_pcm_avail returned a better value.
Period bytes = 2Kbytes which is still larger than the default rewind_safeguard 512 bytes > But cpu usage moved from 1% to 4%, since we are using it in a automotive, we don`t care about power saving, I think it is acceptable. > > But I`m not sure if there is any other down side about "time based scheduling" ? > >
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