Paul E. McKenney wrote:
> On Wed, Jan 30, 2008 at 11:45:01AM +0100, Wolfgang Grandegger wrote:
>> Paul E. McKenney wrote:
>>> On Wed, Jan 30, 2008 at 09:18:49AM +0100, Wolfgang Grandegger wrote:
Paul E. McKenney wrote:
> On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
Hi,
On Wed, Jan 30, 2008 at 02:57:16AM -0800, Paul E. McKenney wrote:
..
> > Yes, I used "$ cyclictest -n -t1 -p80 -i1000" to measure the latency. So
> > far, I have not done other tests. Any recommendation?
> > As no-rt load I used "while ls; do ls /bin; done" in one telnet window
> > and
On Wed, Jan 30, 2008 at 11:45:01AM +0100, Wolfgang Grandegger wrote:
> Paul E. McKenney wrote:
> > On Wed, Jan 30, 2008 at 09:18:49AM +0100, Wolfgang Grandegger wrote:
> >> Paul E. McKenney wrote:
> >>> On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
> Luotao Fu wrote:
>
Paul E. McKenney wrote:
> On Wed, Jan 30, 2008 at 09:18:49AM +0100, Wolfgang Grandegger wrote:
>> Paul E. McKenney wrote:
>>> On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
Luotao Fu wrote:
> Hi,
>
> Wolfgang Grandegger wrote:
> ..
>> Do you
On Wed, Jan 30, 2008 at 09:18:49AM +0100, Wolfgang Grandegger wrote:
> Paul E. McKenney wrote:
> > On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
> >> Luotao Fu wrote:
> >>> Hi,
> >>>
> >>> Wolfgang Grandegger wrote:
> >>> ..
> Do you still get high latencies
Paul E. McKenney wrote:
> On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
>> Luotao Fu wrote:
>>> Hi,
>>>
>>> Wolfgang Grandegger wrote:
>>> ..
Do you still get high latencies with:
CONFIG_PREEMPT_RCU_BOOST=y
CONFIG_RCU_TRACE=y
Paul E. McKenney wrote:
On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
Luotao Fu wrote:
Hi,
Wolfgang Grandegger wrote:
..
Do you still get high latencies with:
CONFIG_PREEMPT_RCU_BOOST=y
CONFIG_RCU_TRACE=y
CONFIG_NO_HZ is not set
With this setting I
On Wed, Jan 30, 2008 at 11:45:01AM +0100, Wolfgang Grandegger wrote:
Paul E. McKenney wrote:
On Wed, Jan 30, 2008 at 09:18:49AM +0100, Wolfgang Grandegger wrote:
Paul E. McKenney wrote:
On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
Luotao Fu wrote:
Hi,
Paul E. McKenney wrote:
On Wed, Jan 30, 2008 at 11:45:01AM +0100, Wolfgang Grandegger wrote:
Paul E. McKenney wrote:
On Wed, Jan 30, 2008 at 09:18:49AM +0100, Wolfgang Grandegger wrote:
Paul E. McKenney wrote:
On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
Luotao Fu
On Wed, Jan 30, 2008 at 09:18:49AM +0100, Wolfgang Grandegger wrote:
Paul E. McKenney wrote:
On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
Luotao Fu wrote:
Hi,
Wolfgang Grandegger wrote:
..
Do you still get high latencies with:
Paul E. McKenney wrote:
On Wed, Jan 30, 2008 at 09:18:49AM +0100, Wolfgang Grandegger wrote:
Paul E. McKenney wrote:
On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
Luotao Fu wrote:
Hi,
Wolfgang Grandegger wrote:
..
Do you still get high latencies with:
Hi,
On Wed, Jan 30, 2008 at 02:57:16AM -0800, Paul E. McKenney wrote:
..
Yes, I used $ cyclictest -n -t1 -p80 -i1000 to measure the latency. So
far, I have not done other tests. Any recommendation?
As no-rt load I used while ls; do ls /bin; done in one telnet window
and while
On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
> Luotao Fu wrote:
> > Hi,
> >
> > Wolfgang Grandegger wrote:
> > ..
> >> Do you still get high latencies with:
> >>
> >> CONFIG_PREEMPT_RCU_BOOST=y
> >> CONFIG_RCU_TRACE=y
> >> CONFIG_NO_HZ is not set
> >>
> >>
Luotao Fu wrote:
> Hi,
>
> Wolfgang Grandegger wrote:
> ..
>> Do you still get high latencies with:
>>
>> CONFIG_PREEMPT_RCU_BOOST=y
>> CONFIG_RCU_TRACE=y
>> CONFIG_NO_HZ is not set
>>
>> With this setting I have not yet realized latencies > 150us. Could you
>> please give it a try?
Hi,
Wolfgang Grandegger wrote:
..
> Do you still get high latencies with:
>
> CONFIG_PREEMPT_RCU_BOOST=y
> CONFIG_RCU_TRACE=y
> CONFIG_NO_HZ is not set
>
> With this setting I have not yet realized latencies > 150us. Could you
> please give it a try? If I change one of the
Hi,
Wolfgang Grandegger wrote:
..
Do you still get high latencies with:
CONFIG_PREEMPT_RCU_BOOST=y
CONFIG_RCU_TRACE=y
CONFIG_NO_HZ is not set
With this setting I have not yet realized latencies 150us. Could you
please give it a try? If I change one of the parameters above,
Luotao Fu wrote:
Hi,
Wolfgang Grandegger wrote:
..
Do you still get high latencies with:
CONFIG_PREEMPT_RCU_BOOST=y
CONFIG_RCU_TRACE=y
CONFIG_NO_HZ is not set
With this setting I have not yet realized latencies 150us. Could you
please give it a try? If I change one of
On Tue, Jan 29, 2008 at 02:38:04PM +0100, Wolfgang Grandegger wrote:
Luotao Fu wrote:
Hi,
Wolfgang Grandegger wrote:
..
Do you still get high latencies with:
CONFIG_PREEMPT_RCU_BOOST=y
CONFIG_RCU_TRACE=y
CONFIG_NO_HZ is not set
With this setting I have not yet
Hi Fu,
Luotao Fu wrote:
> Hi,
>
> I took some time today and went through Wolfgangs scenarios partly. Now
> some results from my side. I ran my tests on a 2.6.24-rt1
>
> Wolfgang Grandegger wrote:
> > I also did some more measurements and made, by chance, interesting
>> observations. I will
Hi,
I took some time today and went through Wolfgangs scenarios partly. Now
some results from my side. I ran my tests on a 2.6.24-rt1
Wolfgang Grandegger wrote:
> I also did some more measurements and made, by chance, interesting
observations. I will summarize in more detail later on. Here
Hi,
I took some time today and went through Wolfgangs scenarios partly. Now
some results from my side. I ran my tests on a 2.6.24-rt1
Wolfgang Grandegger wrote:
I also did some more measurements and made, by chance, interesting
observations. I will summarize in more detail later on. Here
Hi Fu,
Luotao Fu wrote:
Hi,
I took some time today and went through Wolfgangs scenarios partly. Now
some results from my side. I ran my tests on a 2.6.24-rt1
Wolfgang Grandegger wrote:
I also did some more measurements and made, by chance, interesting
observations. I will summarize in
Wolfgang Grandegger wrote:
> Hi Fu,
>
> Luotao Fu wrote:
>> Hi folks,
>>
>> On Thu, Jan 17, 2008 at 11:13:26AM +0100, Wolfgang Grandegger wrote:
>>> It builds and runs fine on my Icecube-MPC5200 board, now also with the
>>> latency tracer enabled. That's great. Still, "cyclictest -n -p80 -i1000"
Wolfgang Grandegger wrote:
Hi Fu,
Luotao Fu wrote:
Hi folks,
On Thu, Jan 17, 2008 at 11:13:26AM +0100, Wolfgang Grandegger wrote:
It builds and runs fine on my Icecube-MPC5200 board, now also with the
latency tracer enabled. That's great. Still, cyclictest -n -p80 -i1000
reports
Hi Fu,
Luotao Fu wrote:
> Hi folks,
>
> On Thu, Jan 17, 2008 at 11:13:26AM +0100, Wolfgang Grandegger wrote:
>> It builds and runs fine on my Icecube-MPC5200 board, now also with the
>> latency tracer enabled. That's great. Still, "cyclictest -n -p80 -i1000"
>> reports latencies up to 400 us and
On Wed, 2008-01-23 at 15:53 +0100, Luotao Fu wrote:
> I was doing some tests on my mpc5200b Board to reproduce the high latency as
> measured by wolfgang.
>
> I ran some tests with
> while [ 1 ]; do ls /bin;done
> as non-rt workload, as in Wolfgangs Scenario.
>
Can you try enabling
Hi folks,
On Thu, Jan 17, 2008 at 11:13:26AM +0100, Wolfgang Grandegger wrote:
> It builds and runs fine on my Icecube-MPC5200 board, now also with the
> latency tracer enabled. That's great. Still, "cyclictest -n -p80 -i1000"
> reports latencies up to 400 us and therefore I tried to trigger and
Hi folks,
On Thu, Jan 17, 2008 at 11:13:26AM +0100, Wolfgang Grandegger wrote:
It builds and runs fine on my Icecube-MPC5200 board, now also with the
latency tracer enabled. That's great. Still, cyclictest -n -p80 -i1000
reports latencies up to 400 us and therefore I tried to trigger and save
On Wed, 2008-01-23 at 15:53 +0100, Luotao Fu wrote:
I was doing some tests on my mpc5200b Board to reproduce the high latency as
measured by wolfgang.
I ran some tests with
while [ 1 ]; do ls /bin;done
as non-rt workload, as in Wolfgangs Scenario.
Can you try enabling
Hi Fu,
Luotao Fu wrote:
Hi folks,
On Thu, Jan 17, 2008 at 11:13:26AM +0100, Wolfgang Grandegger wrote:
It builds and runs fine on my Icecube-MPC5200 board, now also with the
latency tracer enabled. That's great. Still, cyclictest -n -p80 -i1000
reports latencies up to 400 us and therefore
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