Hi Schooner TQVM. With the "latency-test 50us 1m" the result show much accurate results also with glxgear.
Regards, KL Chin On Wednesday, 29 August 2018 16:37:17 UTC+8, Schooner wrote: > > If you run a dummy base thread, but don't actually connect anything to it, > it can improve latency with rt-preempt on multi-core processors. > > I suspect it just prevents cache hopping, by keeping all the code in one > cache whilst the other processor deals with the base thread. > > Experiment using 'latency-test 50us 1ms' as opposed to just 'latency-test' > which will start just a 1ms servo thread by default. > > Linuxcnc is still oriented towards software step generation, so always > runs a base thread on a latency test unless specifically told otherwise. > > > On 29/08/18 09:18, KL Chin wrote: > > Hi Tim, > > TQVM.. With latency-histogram —nobase, the latency look good under > LinuxCNC. > > Regards, > KL Chin > > On Wednesday, 29 August 2018 01:02:30 UTC+8, Timothy March wrote: >> >> KL Chin I do believe the difference between latency test are LinuxCnc has >> both Base thread and Servo thread running. Machinekit just has Servo >> thread. With LinuxCnc you might want to try command line: >> >> latency-histogram —nobase >> >> Lantecy test then may be comparable >> >> Tim > > -- > website: http://www.machinekit.io blog: http://blog.machinekit.io github: > https://github.com/machinekit > --- > You received this message because you are subscribed to the Google Groups > "Machinekit" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > Visit this group at https://groups.google.com/group/machinekit. > For more options, visit https://groups.google.com/d/optout. > > > -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
