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Re: Re: [RFC] Virtualization steps [message #2642 is a reply to message #2636]

Thu, 13 April 2006 06:45

Kirill Korotaev
Messages: 137
Registered: January 2006

Senior Member

Herbert,

Thanks a lot for the details, I will give it a try once again. Looks
like fairness in this scenario simply requires sched_hard settings.

Herbert... I don't know why you've decided that my goal is to prove that
your scheduler is bad or not precise. My goal is simply to investigate
different approaches and make some measurements. I suppose you can
benefit from such a volunteer, don't you think so? Anyway, thanks again
and don't be cycled on the idea that OpenVZ are so cruel bad guys :)

Thanks,
Kirill

> well, your mistake seems to be that you probably haven't
> tested this yet, because with the following (simple)
> setups I seem to get what you consider impossible
> (of course, not as precise as your scheduler does it)
>
>
> vcontext --create --xid 100 ./cpuhog -n 1 100 &
> vcontext --create --xid 200 ./cpuhog -n 1 200 &
> vcontext --create --xid 300 ./cpuhog -n 1 300 &
>
> vsched --xid 100 --fill-rate 1 --interval 6
> vsched --xid 200 --fill-rate 2 --interval 6
> vsched --xid 300 --fill-rate 3 --interval 6
>
> vattribute --xid 100 --flag sched_hard
> vattribute --xid 200 --flag sched_hard
> vattribute --xid 300 --flag sched_hard
>
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 39 root 25 0 1304 248 200 R 74 0.1 0:46.16 ./cpuhog -n 1 300
> 38 root 25 0 1308 252 200 H 53 0.1 0:34.06 ./cpuhog -n 1 200
> 37 root 25 0 1308 252 200 H 28 0.1 0:19.53 ./cpuhog -n 1 100
> 46 root 0 0 1804 912 736 R 1 0.4 0:02.14 top -cid 20
>
> and here the other way round:
>
> vsched --xid 100 --fill-rate 3 --interval 6
> vsched --xid 200 --fill-rate 2 --interval 6
> vsched --xid 300 --fill-rate 1 --interval 6
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 36 root 25 0 1304 248 200 R 75 0.1 0:58.41 ./cpuhog -n 1 100
> 37 root 25 0 1308 252 200 H 54 0.1 0:42.77 ./cpuhog -n 1 200
> 38 root 25 0 1308 252 200 R 29 0.1 0:25.30 ./cpuhog -n 1 300
> 45 root 0 0 1804 912 736 R 1 0.4 0:02.26 top -cid 20
>
>
> note that this was done on a virtual dual cpu
> machine (QEMU 8.0) with 2.6.16-vs2.1.1-rc16 and
> that there were roughly 25% idle time, which I'm
> unable to explain atm ...
>
> feel free to jump on that fact, but I consider
> it unimportant for now ...
>
> best,
> Herbert
>
>
>>Thanks,
>>Kirill
>
>

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[Message index]

		[RFC] Virtualization steps By: dev on Fri, 24 March 2006 17:19
		Re: [RFC] Virtualization steps By: Nick Piggin on Fri, 24 March 2006 17:33
		Re: [RFC] Virtualization steps By: Dave Hansen on Fri, 24 March 2006 19:25
		Re: [RFC] Virtualization steps By: ebiederm on Fri, 24 March 2006 19:53
		Re: [RFC] Virtualization steps By: Bill Davidsen on Tue, 28 March 2006 04:28
		Re: Re: [RFC] Virtualization steps By: kir on Tue, 28 March 2006 06:45
		Re: Re: [RFC] Virtualization steps By: Sam Vilain on Tue, 28 March 2006 21:59
		Re: Re: [RFC] Virtualization steps By: Kir Kolyshkin on Tue, 28 March 2006 22:24
		Re: Re: [RFC] Virtualization steps By: Sam Vilain on Tue, 28 March 2006 23:28
		Re: Re: [RFC] Virtualization steps By: Kirill Korotaev on Wed, 29 March 2006 09:13
		Re: Re: [RFC] Virtualization steps By: Sam Vilain on Wed, 29 March 2006 11:08
		Re: Re: [RFC] Virtualization steps By: Herbert Poetzl on Wed, 29 March 2006 13:45
		Re: Re: [RFC] Virtualization steps By: dev on Wed, 29 March 2006 14:47
		Re: Re: [RFC] Virtualization steps By: Herbert Poetzl on Wed, 29 March 2006 17:29
		Re: Re: [RFC] Virtualization steps By: Sam Vilain on Wed, 29 March 2006 21:37
		Re: Re: [RFC] Virtualization steps By: dev on Wed, 12 April 2006 08:22
		Re: Re: [RFC] Virtualization steps By: Herbert Poetzl on Thu, 13 April 2006 01:05
		Re: Re: [RFC] Virtualization steps By: Kirill Korotaev on Thu, 13 April 2006 06:45
		Re: Re: [RFC] Virtualization steps By: Herbert Poetzl on Thu, 13 April 2006 13:42
		Re: Re: [RFC] Virtualization steps By: Cedric Le Goater on Thu, 13 April 2006 21:33
		Re: Re: [RFC] Virtualization steps By: Herbert Poetzl on Thu, 13 April 2006 22:45
		Re: Re: [RFC] Virtualization steps By: dev on Fri, 14 April 2006 07:35
		Re: Re: [RFC] Virtualization steps By: Cedric Le Goater on Fri, 14 April 2006 09:56
		Re: Re: [RFC] Virtualization steps By: Herbert Poetzl on Sat, 15 April 2006 19:29
		Re: Re: [RFC] Virtualization steps By: kir on Thu, 13 April 2006 22:51
		Re: Re: [RFC] Virtualization steps By: Cedric Le Goater on Fri, 14 April 2006 10:08
		Re: Re: [RFC] Virtualization steps By: Herbert Poetzl on Sat, 15 April 2006 19:31
		Re: [RFC] Virtualization steps By: dev on Tue, 28 March 2006 09:00
		Re: [RFC] Virtualization steps By: Bill Davidsen on Tue, 28 March 2006 14:38
		Re: [RFC] Virtualization steps By: ebiederm on Tue, 28 March 2006 15:03
		Re: [RFC] Virtualization steps By: Jeff Dike on Tue, 28 March 2006 17:47
		Re: [RFC] Virtualization steps By: Sam Vilain on Tue, 28 March 2006 23:07
		Re: [RFC] Virtualization steps By: Bill Davidsen on Wed, 29 March 2006 20:56
		Re: Re: [RFC] Virtualization steps By: Jun OKAJIMA on Tue, 28 March 2006 20:26
		Re: Re: [RFC] Virtualization steps By: kir on Tue, 28 March 2006 20:50
		Re: Re: [RFC] Virtualization steps By: Jun OKAJIMA on Tue, 28 March 2006 21:35
		Re: Re: [RFC] Virtualization steps By: ebiederm on Tue, 28 March 2006 21:51
		Re: Re: [RFC] Virtualization steps By: Sam Vilain on Tue, 28 March 2006 23:17
		Re: [RFC] Virtualization steps By: dev on Tue, 28 March 2006 09:02
		Re: [RFC] Virtualization steps By: Nick Piggin on Tue, 28 March 2006 09:15
		Re: [RFC] Virtualization steps By: Herbert Poetzl on Tue, 28 March 2006 15:35
		Re: [RFC] Virtualization steps By: ebiederm on Tue, 28 March 2006 16:31
		Re: [RFC] Virtualization steps By: Nick Piggin on Tue, 28 March 2006 15:53
		Re: [RFC] Virtualization steps By: Bill Davidsen on Wed, 29 March 2006 21:37
		Re: [RFC] Virtualization steps By: ebiederm on Tue, 28 March 2006 16:15
		Re: [RFC] Virtualization steps By: dev on Wed, 29 March 2006 01:39
		Re: [RFC] Virtualization steps By: Herbert Poetzl on Wed, 29 March 2006 13:47
		Re: Re: [RFC] Virtualization steps By: TheWiseOne on Tue, 28 March 2006 15:48
		Re: Re: [RFC] Virtualization steps By: ebiederm on Tue, 28 March 2006 16:42
		Re: Re: [RFC] Virtualization steps By: TheWiseOne on Tue, 28 March 2006 17:04
		Re: Re: [RFC] Virtualization steps By: Kirill Korotaev on Wed, 29 March 2006 00:55
		Re: [RFC] Virtualization steps By: ebiederm on Fri, 24 March 2006 18:36
		Re: [RFC] Virtualization steps By: Herbert Poetzl on Fri, 24 March 2006 21:19
		Re: [RFC] Virtualization steps By: ebiederm on Mon, 27 March 2006 18:45
		Re: [RFC] Virtualization steps By: dev on Tue, 28 March 2006 08:51
		Re: [RFC] Virtualization steps By: serue on Tue, 28 March 2006 12:53
		Re: [RFC] Virtualization steps By: Sam Vilain on Tue, 28 March 2006 22:50
		Re: [RFC] Virtualization steps By: Dave Hansen on Wed, 29 March 2006 20:30
		Re: [RFC] Virtualization steps By: ebiederm on Wed, 29 March 2006 20:47
		Re: [RFC] Virtualization steps By: Sam Vilain on Wed, 29 March 2006 22:44
		Re: [RFC] Virtualization steps By: dev on Thu, 30 March 2006 13:51
		Re: [RFC] Virtualization steps By: ebiederm on Tue, 28 March 2006 21:58

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