Hi Dario,
2015-12-02 5:19 GMT-06:00 Dario Faggioli :
> On Wed, 2015-12-02 at 11:03 +, Lars Kurth wrote:
>> > On 2 Dec 2015, at 05:54, Meng Xu wrote:
>> >
>> > Maybe we could add some health warning and add a link to this
>> > discussion?
>> > Misconfiguration of the system will usually cause
On Wed, 2015-12-02 at 11:01 +, Ian Campbell wrote:
> On Tue, 2015-12-01 at 23:54 -0600, Meng Xu wrote:
> >
> > What do you guys think which type of information we should include?
>
> I think there is an important distinction between credit2/credit and
> RT
> schedulers such as arinc/rtds etc,
On Wed, 2015-12-02 at 11:03 +, Lars Kurth wrote:
> > On 2 Dec 2015, at 05:54, Meng Xu wrote:
> >
> > Maybe we could add some health warning and add a link to this
> > discussion?
> > Misconfiguration of the system will usually cause performance
> > degradation, even for the other schedulers,
> On 2 Dec 2015, at 05:54, Meng Xu wrote:
>
> Hi Lars and Dario,
>
> 2015-12-01 4:11 GMT-06:00 Lars Kurth :
>>
>> I wonder whether we need to add some health warnings and recommended
>> background reading to http://wiki.xenproject.org/wiki/RTDS-Based-Scheduler
>
>
> Maybe we could add some
On Tue, 2015-12-01 at 23:54 -0600, Meng Xu wrote:
> Hi Lars and Dario,
>
> 2015-12-01 4:11 GMT-06:00 Lars Kurth :
> >
> > I wonder whether we need to add some health warnings and recommended
> > background reading to http://wiki.xenproject.org/wiki/RTDS-Based-Schedu
> > ler
>
>
> Maybe we could
On Tue, Dec 01, 2015 at 11:54:14PM -0600, Meng Xu wrote:
> Hi Lars and Dario,
>
> 2015-12-01 4:11 GMT-06:00 Lars Kurth :
> >
> > I wonder whether we need to add some health warnings and recommended
> > background reading to http://wiki.xenproject.org/wiki/RTDS-Based-Scheduler
>
>
> Maybe we cou
Hi Lars and Dario,
2015-12-01 4:11 GMT-06:00 Lars Kurth :
>
> I wonder whether we need to add some health warnings and recommended
> background reading to http://wiki.xenproject.org/wiki/RTDS-Based-Scheduler
Maybe we could add some health warning and add a link to this discussion?
Misconfigurat
Hi all,
A little update,
so yea when I run with tasks that has utilization less than 0.5. Xen-RTDS
is able to complete all those tasks.
Thank you guys very much for helping me understand the problem!
On Tue, Dec 1, 2015 at 2:11 AM, Lars Kurth wrote:
> I wonder whether we need to add some he
I wonder whether we need to add some health warnings and recommended background
reading to http://wiki.xenproject.org/wiki/RTDS-Based-Scheduler
Lars
> On 1 Dec 2015, at 08:59, Dario Faggioli wrote:
>
> On Sun, 2015-11-29 at 11:44 -0500, Meng Xu wrote:
>> 2015-11-29 11:27 GMT-05:00 Dario Faggiol
On Sun, 2015-11-29 at 11:44 -0500, Meng Xu wrote:
> 2015-11-29 11:27 GMT-05:00 Dario Faggioli
> :
> >
> > Mmmm... As I said many times, I don't remember much of all those RT
> > schedulability formulas, but, is really that simple?
>
> Ah, let me clarify...
> It is not that simple. ;-) I just sim
Hi Meng and Dario,
Thank you both very very much for the explanations! It really help a lot
for understanding RT and what I am doing wrong here! I will do more
research and reconfigure the experiments. Hope to have some good news soon!
Thanks again!
On Sun, Nov 29, 2015 at 8:44 AM, Meng Xu wr
2015-11-29 11:27 GMT-05:00 Dario Faggioli :
> On Sun, 2015-11-29 at 10:38 -0500, Meng Xu wrote:
>>
>>
>> 2015-11-29 7:46 GMT-05:00 Yu-An(Victor) Chen :
>> > Hi Meng,
>> >
>> Hi,
>>
>> >
>> > So I will rewrite my setup here again, but this time I shorten the
>> > period and budget for RTDS like you
On Sun, 2015-11-29 at 10:38 -0500, Meng Xu wrote:
>
>
> 2015-11-29 7:46 GMT-05:00 Yu-An(Victor) Chen :
> > Hi Meng,
> >
> Hi,
>
> >
> > So I will rewrite my setup here again, but this time I shorten the
> > period and budget for RTDS like you suggested:
> >
> Nice! :-)
>
>
> > --
2015-11-29 11:18 GMT-05:00 Dario Faggioli :
>
> On Sun, 2015-11-29 at 04:46 -0800, Yu-An(Victor) Chen wrote:
> > So st_jobs_stats for the missed deadline jobs are:
> >
> > trial #1 composed of 2 tasks: total tasks utilization rate = 1
> >
> > (period, exe, deadline)=(21ms,12.023ms,21ms) -> miss all
On Sun, 2015-11-29 at 04:46 -0800, Yu-An(Victor) Chen wrote:
> So st_jobs_stats for the missed deadline jobs are:
>
> trial #1 composed of 2 tasks: total tasks utilization rate = 1
>
> (period, exe, deadline)=(21ms,12.023ms,21ms) -> miss all deadline
> (period, exe, deadline)=(100ms,37.985ms,100m
2015-11-29 7:46 GMT-05:00 Yu-An(Victor) Chen :
> Hi Meng,
>
Hi,
>
> So I will rewrite my setup here again, but this time I shorten the period
> and budget for RTDS like you suggested:
>
Nice! :-)
>
> --
Hi Meng,
So I will rewrite my setup here again, but this time I shorten the period
and budget for RTDS like you suggested:
-
for xen-credit : 2vms (both vm are given 8 vCPUs
2015-11-28 7:20 GMT-05:00 Yu-An(Victor) Chen :
> Hi Meng,
>
> Thank you so much for being this patience.
>
> So a task set is composed of a collection of real-time tasks, and each
> real-time task is a sequence of jobs that are released periodically... All
> jobs are periodic, where each job Ti is
Hi Meng,
Thank you so much for being this patience.
So a task set is composed of a collection of real-time tasks, and each
real-time task is a sequence of jobs that are released periodically... All
jobs are periodic, where each job Ti is defined by a period (and deadline) pi
and a worse-case exec
2015-11-27 14:50 GMT-05:00 Yu-An(Victor) Chen :
> Hi Dario & Meng,
>
> Thanks for your analysis!
>
> VM1 and VM2 both are given 8 vCPUs and sharing physical CPU 0-7. So in
> theory,"VM1 can get the services of 400%"
> And yes, Dario, your explanation about the task utilization is correct.
>
> So th
Hi Dario & Meng,
Thanks for your analysis!
VM1 and VM2 both are given 8 vCPUs and sharing physical CPU 0-7. So in
theory,"VM1 can get the services of 400%"
And yes, Dario, your explanation about the task utilization is correct.
So the resource configuration as I mentioned before is:
for xen-cre
2015-11-27 12:23 GMT-05:00 Dario Faggioli :
> On Fri, 2015-11-27 at 08:36 -0800, Yu-An(Victor) Chen wrote:
>> Hi Dario,
>>
> Hi,
>
>> Thanks for the reply!
>>
> You're welcome. :-)
>
> I'm adding Meng to Cc...
>
Thanks! :-)
>> My goal for the experiment is to show that xen rtds scheduler is
>> be
On Fri, 2015-11-27 at 08:36 -0800, Yu-An(Victor) Chen wrote:
> Hi Dario,
>
Hi,
> Thanks for the reply!
>
You're welcome. :-)
I'm adding Meng to Cc...
> My goal for the experiment is to show that xen rtds scheduler is
> better than credit scheduler when it comes to real time tasks.
> so my set
Hi Dario,
Thanks for the reply!
My goal for the experiment is to show that xen rtds scheduler is better
than credit scheduler when it comes to real time tasks.
so my set up is:
for xen-credit : 2vms sharing 8 cores (cpu 0-7) using credit scheduler(both
with weight of 800 and capacity of 400)
for
On Mon, 2015-11-23 at 07:42 -0800, Yu-An(Victor) Chen wrote:
> Hi all,
>
Hello,
> So I was doing some experiments to evaluate RTDS scheduler
> schedubility of real time tasks using 1vm with period of 1 and
> budget of 1. The experiment results turn out as expected(perform
> better than xe
2015-11-23 23:57 GMT-05:00 Yu-An(Victor) Chen :
> Hi Meng,
>
Hi,
> Thank you again for your kindly reply!
No problem :-)
> I am currently using "litmus-rt-2014.2.patch" and with my labmates' patch
> for IPI interrupt (https://github.com/LITMUS-RT/liblitmus/pull/1/files)
> I asked my labmate about
Hi Meng,
Thank you again for your kindly reply!
I am currently using "litmus-rt-2014.2.patch" and with my labmates' patch
for IPI interrupt (https://github.com/LITMUS-RT/liblitmus/pull/1/files)
I asked my labmate about it, he said he was not sure if there is more IPI
interrupt bug other than then
Hi,
2015-11-23 11:35 GMT-05:00 Yu-An(Victor) Chen :
> Hi Meng,
>
> Thank you very much for replying!
>
> The RT tasks I am running for each trial at a certain utilization rate is a
> collection of real-time tasks, and each real-time task is a sequence of jobs
> that are released periodically. All
Hi Meng,
Thank you very much for replying!
The RT tasks I am running for each trial at a certain utilization rate is a
collection of real-time tasks, and each real-time task is a sequence of
jobs that are released periodically. All jobs are periodic, where each job
is defined by a period (and dea
Hi Yu-An,
2015-11-23 10:42 GMT-05:00 Yu-An(Victor) Chen :
>
> Hi all,
>
> So I was doing some experiments to evaluate RTDS scheduler schedubility of
> real time tasks using 1vm with period of 1 and budget of 1. The
> experiment results turn out as expected(perform better than xen-credit)
Hi all,
So I was doing some experiments to evaluate RTDS scheduler schedubility of
real time tasks using 1vm with period of 1 and budget of 1. The
experiment results turn out as expected(perform better than xen-credit).
But when I tried to perform similar experiments with 2 vms (both with
31 matches
Mail list logo
