Messages in this thread | | | Date | Mon, 20 Jan 2020 09:19:36 -0600 | From | Segher Boessenkool <> | Subject | Re: [RFC PATCH v4 00/11] powerpc: switch VDSO to C implementation. |
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On Mon, Jan 20, 2020 at 02:56:00PM +0000, Christophe Leroy wrote: > >Nice! Much better. > > > >It should be tested on more representative hardware, too, but this looks > >promising alright :-) > > mpc832x (e300c2 core) at 333 MHz: > > Before: > > gettimeofday: vdso: 235 nsec/call > clock-gettime-realtime: vdso: 244 nsec/call > > With the series: > > gettimeofday: vdso: 271 nsec/call > clock-gettime-realtime: vdso: 281 nsec/call
Those are important, and degrade ~15%. That is acceptable IMO, but do you see a way to optimise this (later)?
Anyway, excellent results, thanks for your persistence!
Segher
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