> On Jul 24, 2018, at 6:39 AM, Pavel Machek <pavel@xxxxxx> wrote: > >> On Mon 2018-07-23 12:00:08, Linus Torvalds wrote: >>> On Mon, Jul 23, 2018 at 7:09 AM Pavel Machek <pavel@xxxxxx> wrote: >>> >>> Meanwhile... it looks like gcc is not slowed down significantly, but >>> other stuff sees 30% .. 40% slowdowns... which is rather >>> significant. >> >> That is more or less expected. > > Ok, so I was wrong. bzip2 showed 30% slowdown, but running test in a > loop, I get (on v4.18) that, too. > > ... The obvious cause would be thermal issues, which are increasingly common in laptops. You could get cycle counts from perf stat, perhaps.
