Re: [RFCv2 00/48] perf tools: Add threads to record command

From: Peter Zijlstra
Date: Fri Sep 14 2018 - 07:15:41 EST

On Fri, Sep 14, 2018 at 11:40:22AM +0200, Ingo Molnar wrote:
> In fact keeping the files separate has scalability advantages for 'perf report' and similar
> parsing tools: they could read all the streams in a per-CPU fashion already, from the very
> beginning.

Also writing to different files from different CPUs is good for record,
less contention on the inode state (which include pagecache).