Re: [Xen-devel] Xen cpu usage limting

["Brian Wolfe" <brianw@xxxxxxxxxxxx>]

Sounds great. :) It's probably that 3com card then that's nailing the cpu.

Anyone thought of starting some kind of wiki for xen yet? If not, I'm
willing to toss up some space as xen.terrabox.com and an install of
phpwiki.

I'm definitly looking froward to the new scheduler's controls. I'll wait
as pantiently as I can (heh, bout as good as a kid in a candy store. ;) ).

Thanks guys!
Again, Xen and ya'll rock!

-- 
Brian Wolfe           | Phone 1-(214)-764-1204
President,            | Email  brianw@xxxxxxxxxxxx
TerraBox.com Inc.     |


pub  1024D/73C5A2DF 2003-03-18 Brian Wolfe <brianw@xxxxxxxxxxxx>
     Key fingerprint = 050E 5E3C CF65 4C1E A183  F48F E3E3 5B22 73C5 A2DF
sub  1024g/BB87A3DD 2003-03-18


Mark Williamson said:
>> I was also wondering if there is a way to assign a percentage of cpu
>> time
>> to a domain. Eg guarantee domain 3 gets 25% of the cpu time no matter
>> how
>> many other domains are in there, or how much cpu time they want.
>
> The Atropos scheduler allows you to specify that a domain should receive x
> nanoseconds of CPU time per y nanoseconds of real time, i.e. what share of
> the
> CPU a domain gets and how regularly it gets scheduled.  Don't overcommit
> the
> CPU, though (i.e. reserve more than [100 minus a small margin for
> overheads]
> percent in total across all domains).
>
> You can select Atropos using sched=atropos as a boot param to Xen.  The
> administrator tools (xc_dom_control.py and friends) don't have support for
> actually configuring it yet (though there's some library calls available
> in
> the Python Xc module if you want to write your own script) but I'll be
> checking in basic support early next week.
>
> Cheers,
>
> Mark
>
>
>
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