On 2018.03.22 09:32 Rik van Riel wrote: > On Wed, 2018-03-14 at 13:04 +0100, Peter Zijlstra wrote: > >> On x86 we don't have to use that time_check_counter thing, >> sched_clock() >> is really cheap, not sure if it makes sense on other platforms. > > Are you sure? I saw a 5-10% increase in CPU use, > for a constant query rate to a memcache style > workload, with v3 of this patch.
I would very much like to be able to repeat your test results. However, I am not sure what you mean by "memcache style workload". Is there a test you can point me to? Say a Phoronix type test, for example. All of my tests with the V3 of this patch have been fine. ... Doug
