On Sun, 2017-05-14 at 10:43 +0200, Tomasz Buchert wrote: > On 12/05/17 18:54, Nathaniel Beaver wrote: > > [...] > > Thank you, Nathaniel. > > I confirm the problem. A safe bet is that > https://lkml.org/lkml/2016/1/11/587 is the cause. You can verify that > /proc/sys/kernel/perf_event_paranoid contains "3". By running > > echo 2 | sudo tee /proc/sys/kernel/perf_event_paranoid > > you should be able to use tiptop as a normal user again. > > I doubt that we can switch the default value in Debian kernels to "2", > so I have to say that simply the tiptop website is not up-to-date, at > least with respect to the Debian kernels (but also likely to other > distributions as well). I'm CCing Ben to let him comment on this.
The Debian kernel default is not going to be changed in the short term. In the long term it's conceivable that performance events will eventually become sufficiently robust that it would be reasonable to change the default. Ben. -- Ben Hutchings - Debian developer, member of kernel, installer and LTS teams
signature.asc
Description: This is a digitally signed message part
