Hello, Peter. On Tue, Jun 26, 2018 at 05:49:08PM +0200, Peter Zijlstra wrote: > Well, no, because the Changelog is incomprehensible and the patch > doesn't really have useful comments, so I'll have to reverse engineer > the entire thing, and I've just not had time for that.
Just as an additional data point, we also sometimes see artifacts from cpu_adjust_time() in the form of per-task user or sys time getting stuck for some period (in extreme cases for over a minute) while the application isn't doing anything differently. We're telling the users that it's an inherent sampling artifact but it'd be nice to improve it if possible without adding noticeable overhead. No idea whether this patch's approach is a good one tho. Thanks. -- tejun