[Xen-devel] RE: Credit scheduler in Xen

[George Dunlap <George.Dunlap@xxxxxxxxxxxxx>]

Because non-multiples of 100 are added?

 -George

-----Original Message-----
From: gaurav somani [mailto:onlineengineer@xxxxxxxxx] 
Sent: 17 June 2009 09:34
To: George Dunlap
Cc: NISHIGUCHI Naoki; Emmanuel Ackaouy; xen-devel
Subject: Re: Credit scheduler in Xen

Hi George
,
If the accounting is done with debiting 100 from credit score for each
10ms. Then why the credits are like -56, 244.


Thanks
Gaurav


(XEN) active vcpus:
(XEN)     1: [7.0] pri=-1 flags=0 cpu=1 credit=-56 [w=256] (244+300)
{a/i=5689/5688 m=79036+0}
(XEN)     2: [0.1] pri=-2 flags=0 cpu=0 credit=-250 [w=256] (-50+150)
{a/i=154671/154670 m=105449+0}
(XEN)     3: [0.0] pri=-2 flags=0 cpu=0 credit=-194 [w=256] (-194+150)
{a/i=199622/199621 m=117084+0}
(XEN) NOW=0x000057DB2EA2EF38
(XEN) CPU[00]  sort=1094203, sibling=0x1, core=0x3
(XEN)   run: [0.1] pri=-2 flags=0 cpu=0 credit=-250 [w=256] (-50+150)
{a/i=154671/154670 m=105449+0}
(XEN)     1: [0.0] pri=-2 flags=0 cpu=0 credit=-194 [w=256] (-194+150)
{a/i=199622/199621 m=117084+0}
(XEN)     2: [32767.0] pri=-64 flags=0 cpu=0
(XEN) CPU[01]  sort=1094203, sibling=0x2, core=0x3
(XEN)   run: [7.0] pri=-1 flags=0 cpu=1 credit=-56 [w=256] (244+300)
{a/i=5689/5688 m=79036+0}
(XEN)     1: [32767.1] pri=-64 flags=0 cpu=1






On 6/17/09, NISHIGUCHI Naoki <nisiguti@xxxxxxxxxxxxxx> wrote:
> gaurav somani wrote:
>> I have seen your preseantion on credit scheduler. It was quite good
>> idea to debit resource according to use. Please tell me about their
>> inclusion in Xen. Are they available in xen?. After
>
> No, my patches to credit scheduler have not been applied in Xen.
> As you knou, new scheduler has been developed by George Dunlap.
>
>> doing
>>
>> # xm debug-keys r
>> #xm dmesg
>>
>> i got credits in odd numbers and negative also and not in the multiple
>> of 100.  So, It seems that this version contains your changes. (It i
>> sXen 3.3.1).
>
> Because of not applying my patches in Xen, I think these things are
> behavior of original credit scheduler.
>
>> Please conform this thing. Also how to get continous accounting
>> information on any thing tike xm dmesg.
>
> I don't know how to get continuous accounting information. I also had
> used "xm debug-keys r" as you do.
>
> Regards,
> Naoki Nishiguchi
>
>


-- 
Gaurav somani
M.Tech (ICT)
Dhirubhai Ambani Institute of ICT,
Gandhinagar
Gujarat, INDIA

onlineengineer@xxxxxxxx
gaurav_somani@xxxxxxxxxxxx
http://dcomp.daiict.ac.in/~gaurav
http://www.linkedin.com/in/gauravsomani

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