Hi I have observed similar behavior with newer non-RT kernels but there were something strange to me ; Same results (very few X-runs, if any) with : - on one hand, on an Asus laptop with a Core i3 : latency 2.3 msec with the 2.6.33.7.2-rt kernel and 23 msec with a 2.6.37 preempt kernel; - on the other hand, on a Lenovo Thinkpad Core i5 : latency 2.3 msec with the 2.6.33.7.2-rt kernel and 2.3 msec (yes the same) with a 2.6.37 preempt kernel !! Of course the Lenovo Thinkpad is a very good laptop, but how come that there is such a big difference? So, I have observed the same quality of performance as Madovsky but not on every machine I've used... I don't have a clue why.... Victor ---------------------------------------- > From: infos@xxxxxxxxxxxx > To: linux-rt-users@xxxxxxxxxxxxxxx > Subject: Re: 2.6.33-7-rt30 and 2.6.38 comparison > Date: Fri, 18 Mar 2011 16:34:51 -0400 > > I compiled 2.6.38 with exactly the same > config so I made different audio/video task > and very stable with short latency > > > ----- Original Message ----- > From: "Madovsky" > To: "linux-rt-users" > Sent: Friday, March 18, 2011 4:28 PM > Subject: Re: 2.6.33-7-rt30 and 2.6.38 comparison > > > > not a lot, I'm only a rt user, not linux developer. > > so my compare is only a view of for example > > latency in audio/video.... > > > > > >> ----- Original Message ----- > >> From: "Ilyes Gouta" > >> To: "Madovsky" > >> Cc: > >> Sent: Friday, March 18, 2011 4:16 PM > >> Subject: Re: 2.6.33-7-rt30 and 2.6.38 comparison > >> > >> > >>> Hi, > >>> > >>> Would you please elaborate a bit more? > >>> > >>> Thanks, > >>> > >>> -Ilyes > >>> > >>> On Fri, Mar 18, 2011 at 9:15 PM, Madovsky wrote: > >>>> Just tried to compare real time app > >>>> at work with 2.6.33.7-rt30 and 2.6.38 and > >>>> the result is 2.6.38 is very impressive... > >>>> -- > >>>> To unsubscribe from this list: send the line "unsubscribe > >>>> linux-rt-users" in > >>>> the body of a message to majordomo@xxxxxxxxxxxxxxx > >>>> More majordomo info at http://vger.kernel.org/majordomo-info.html > >>>> > >>> -- > >>> To unsubscribe from this list: send the line "unsubscribe > >>> linux-rt-users" in > >>> the body of a message to majordomo@xxxxxxxxxxxxxxx > >>> More majordomo info at http://vger.kernel.org/majordomo-info.html > >> > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
