* explain the meaning of some informations @ 2016-04-14 9:28 aicha hamza 2016-04-14 11:45 ` Dario Faggioli 0 siblings, 1 reply; 4+ messages in thread From: aicha hamza @ 2016-04-14 9:28 UTC (permalink / raw) To: Xen-devel [-- Attachment #1.1: Type: text/plain, Size: 591 bytes --] hello does any body can explain what mean this (XEN) Cpus: 0-1 (XEN) Scheduler: SMP Credit Scheduler (credit) (XEN) info: (XEN) ncpus = 2 (XEN) master = 0 (XEN) credit = 600 (XEN) credit balance = 107 (XEN) weight = 512 (XEN) runq_sort = 55 (XEN) default-weight = 256 (XEN) tslice = 30ms (XEN) ratelimit = 1000us (XEN) credits per msec = 10 (XEN) ticks per tslice = 3 (XEN) migration delay = 0us (XEN) idlers: 00000000,00000000,00000000,00000000 what's the significance of credit= 600 , runq_sort = 55 , .... i tried to understand it but i found some difficulties in some of it thanks [-- Attachment #1.2: Type: text/html, Size: 9714 bytes --] [-- Attachment #2: Type: text/plain, Size: 126 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: explain the meaning of some informations 2016-04-14 9:28 explain the meaning of some informations aicha hamza @ 2016-04-14 11:45 ` Dario Faggioli 2016-04-14 14:02 ` aicha hamza 0 siblings, 1 reply; 4+ messages in thread From: Dario Faggioli @ 2016-04-14 11:45 UTC (permalink / raw) To: aicha hamza, Xen-devel [-- Attachment #1.1: Type: text/plain, Size: 1833 bytes --] On Thu, 2016-04-14 at 11:28 +0200, aicha hamza wrote: > hello > does any body can explain what mean this > Hello, Start by reading this: http://wiki.xenproject.org/wiki/Asking_Developer_Questions and stopping using HTML for emails. > (XEN) Cpus: 0-1 > (XEN) Scheduler: SMP Credit Scheduler (credit) > (XEN) info: > (XEN) ncpus = 2 > (XEN) master = 0 > (XEN) credit = 600 > (XEN) credit balance = 107 > (XEN) weight = 512 > (XEN) runq_sort = 55 > (XEN) default-weight = 256 > (XEN) tslice = 30ms > (XEN) ratelimit = 1000us > (XEN) credits per msec = 10 > (XEN) ticks per tslice = 3 > (XEN) migration delay = 0us > (XEN) idlers: 00000000,00000000,00000000,00000000 > > > what's the significance of credit= 600 , runq_sort = 55 , .... > i tried to understand it but i found some difficulties in some of it > They're information relevant when you want to either understand or debug the behavior of the Credit scheduler. What they mean in general, as well as what it means to find a specific value in each of this field is only evident if you go check the code and see what each line is actually printing and how the value of the printed quantity evolve through the algorithm, considering the various phases and events. "found some difficulties in some of it" is too broad. What is it that you manage to understood and, for the things that you didn't, what is it specifically that you are not understanding? Also, most of the time, stating your goal is also very very helpful to be able to help you. Regards, Dario -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) [-- Attachment #1.2: This is a digitally signed message part --] [-- Type: application/pgp-signature, Size: 181 bytes --] [-- Attachment #2: Type: text/plain, Size: 126 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: explain the meaning of some informations 2016-04-14 11:45 ` Dario Faggioli @ 2016-04-14 14:02 ` aicha hamza 2016-04-14 14:28 ` Dario Faggioli 0 siblings, 1 reply; 4+ messages in thread From: aicha hamza @ 2016-04-14 14:02 UTC (permalink / raw) To: Dario Faggioli; +Cc: Xen-devel [-- Attachment #1.1: Type: text/plain, Size: 2198 bytes --] thanks for your reply I am actually trying to generate some important information about xen , dom0 ... i have xen runnig on omap board i didn't understand ( credit = 600 ) and the difference between credit and credit balance Regards On Thu, Apr 14, 2016 at 1:45 PM, Dario Faggioli <dario.faggioli@citrix.com> wrote: > On Thu, 2016-04-14 at 11:28 +0200, aicha hamza wrote: > > hello > > does any body can explain what mean this > > > Hello, > > Start by reading this: > http://wiki.xenproject.org/wiki/Asking_Developer_Questions > > and stopping using HTML for emails. > > > (XEN) Cpus: 0-1 > > (XEN) Scheduler: SMP Credit Scheduler (credit) > > (XEN) info: > > (XEN) ncpus = 2 > > (XEN) master = 0 > > (XEN) credit = 600 > > (XEN) credit balance = 107 > > (XEN) weight = 512 > > (XEN) runq_sort = 55 > > (XEN) default-weight = 256 > > (XEN) tslice = 30ms > > (XEN) ratelimit = 1000us > > (XEN) credits per msec = 10 > > (XEN) ticks per tslice = 3 > > (XEN) migration delay = 0us > > (XEN) idlers: 00000000,00000000,00000000,00000000 > > > > > > what's the significance of credit= 600 , runq_sort = 55 , .... > > i tried to understand it but i found some difficulties in some of it > > > They're information relevant when you want to either understand or > debug the behavior of the Credit scheduler. > > What they mean in general, as well as what it means to find a specific > value in each of this field is only evident if you go check the code > and see what each line is actually printing and how the value of the > printed quantity evolve through the algorithm, considering the various > phases and events. > > "found some difficulties in some of it" is too broad. What is it that > you manage to understood and, for the things that you didn't, what is > it specifically that you are not understanding? > > Also, most of the time, stating your goal is also very very helpful to > be able to help you. > > Regards, > Dario > -- > <<This happens because I choose it to happen!>> (Raistlin Majere) > ----------------------------------------------------------------- > Dario Faggioli, Ph.D, http://about.me/dario.faggioli > Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) > > [-- Attachment #1.2: Type: text/html, Size: 3109 bytes --] [-- Attachment #2: Type: text/plain, Size: 126 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: explain the meaning of some informations 2016-04-14 14:02 ` aicha hamza @ 2016-04-14 14:28 ` Dario Faggioli 0 siblings, 0 replies; 4+ messages in thread From: Dario Faggioli @ 2016-04-14 14:28 UTC (permalink / raw) To: aicha hamza; +Cc: Xen-devel [-- Attachment #1.1: Type: text/plain, Size: 1122 bytes --] On Thu, 2016-04-14 at 16:02 +0200, aicha hamza wrote: > thanks for your reply > You are welcome. You are still using HTML, though, and you are top posting. Both should stop. > I am actually trying to generate some important information about > xen , dom0 ... > So "generate some important information" is your end goal? Still a bit vague / unclear to me, I have to admit... > i have xen runnig on omap board > i didn't understand ( credit = 600 ) and the difference between > credit and credit balance > So, to understand credit balance (which prints prv->credit_balance, as you can see from csched_dump()), I recommend looking, inside xen/common/sched_credit.c, at the csched_acct() function. For credit, which prints prv->credits, look at __csched_set_tslice(), csched_free_pdata() and init_pdata(). regards, Dario -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) [-- Attachment #1.2: This is a digitally signed message part --] [-- Type: application/pgp-signature, Size: 181 bytes --] [-- Attachment #2: Type: text/plain, Size: 126 bytes --] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
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