Hi Arnaldo, On Wed, Oct 17, 2018 at 5:11 AM Arnaldo Carvalho de Melo <arnaldo.m...@gmail.com> wrote: > > Adding Alexey, Jiri and Namhyung as they worked/are working on > multithreading 'perf record'.
I have read Alexey's work on enabling aio for perf-record (https://lkml.org/lkml/2018/10/15/169). But I feel it is not really related to this work. Did I miss anything here? For VIP events, I think we need more mmap. Currently, the default setting uses 1 mmap per cpu. To capture VIP events, I think we need another mmap per CPU. The VIP events will be send to the special mmap. Then, user space will process these event before the end of perf-record. Does this approach make sense? Thanks! Song
