Hello Deng Zhengrong, > The usage model for this ring buffer is that we can peek into what's going on > under the hood without restarting pulseaudio daemon, we enable this via logging > all level's messages. what is the expected memory usage? 512*200 bytes + 200 timestamps? is this per thread? can this be made compile-time configurable? regards, p. -- Peter Meerwald +43-664-2444418 (mobile)