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Re: [Vserver] Re: Container Test Campaign [message #4270 is a reply to message #4265]

Tue, 04 July 2006 14:52

kir
Messages: 1645
Registered: August 2005
Location: Moscow, Russia

Senior Member

Clément Calmels wrote:
> Hi,
>
>
>>> I'm wondering why a default 'guest' creation implies some resources
>>> restrictions? Couldn't the resources be unlimited? I understand the need
>>> for resource management, but the default values look a little bit
>>> tiny...
>>>
>>>
>> The reason is security. A guest is untrusted by default, though sane
>> limits are applied. Same as ulimit which has some sane defaults (check
>> output of ulimit -a). Same as those kernel settings from /proc/sys --
>> should /proc/sys/fs/file-max be 'unlimited' by default?
>>
>
> Ok. So as our benchmarks have no security concern, you will see no
> objection if I set all the parameters in the 'guest' to their value in
> the host, won't you?
Sure.

In case you are testing performance (but not, say, isolation), you can
definitely set all the UBCs to unlimited values (i.e. both barrier and
limit for each parameter should be set to MAX_LONG). The only issues is
with vmguarpages parameter, because this is a guarantee but not limit --
but unless you are doing something weird it should be OK to set to to
MAX_LONG as well.

Another approach is to generate sample config (for the given server)
using vzsplit utility with the number of VEs set to 1, like this:
# vzsplit -f one-ve -n 1 [-s xxx]
and use it for new VE creation:
# vzctl create 123 --config one-ve

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[Message index]

		Container Test Campaign By: Clement Calmels on Wed, 07 June 2006 14:20
		RE: Container Test Campaign By: mef on Wed, 21 June 2006 19:25
		Re: Container Test Campaign By: serue on Thu, 22 June 2006 11:31
		Re: Container Test Campaign By: Sam Vilain on Thu, 22 June 2006 23:39
		Re: Container Test Campaign By: Cedric Le Goater on Thu, 22 June 2006 21:51
		RE: Container Test Campaign By: mef on Fri, 23 June 2006 07:40
		Re: Container Test Campaign By: Mark Huang on Fri, 23 June 2006 17:31
		RE: Container Test Campaign By: mef on Mon, 26 June 2006 08:57
		RE: Container Test Campaign By: mef on Wed, 21 June 2006 19:25
		RE: Container Test Campaign By: Clement Calmels on Thu, 22 June 2006 16:33
		Re: Container Test Campaign By: Cedric Le Goater on Thu, 22 June 2006 21:39
		Re: Container Test Campaign By: Sam Vilain on Fri, 23 June 2006 03:40
		RE: Container Test Campaign By: mef on Fri, 23 June 2006 07:40
		Re: Container Test Campaign By: Sam Vilain on Sun, 25 June 2006 22:00
		Re: Container Test Campaign By: serue on Thu, 22 June 2006 11:33
		Re: Container Test Campaign By: Clement Calmels on Fri, 30 June 2006 17:28
		Re: [Vserver] Re: Container Test Campaign By: Herbert Poetzl on Sun, 02 July 2006 15:32
		Re: [Vserver] Re: Container Test Campaign By: Clement Calmels on Tue, 04 July 2006 11:10
		Re: [Vserver] Re: Container Test Campaign By: dev on Tue, 04 July 2006 14:32
		Re: [Vserver] Re: Container Test Campaign By: Cedric Le Goater on Tue, 04 July 2006 15:28
		Re: [Vserver] Re: Container Test Campaign By: Herbert Poetzl on Wed, 05 July 2006 12:13
		Re: Container Test Campaign By: Kirill Korotaev on Mon, 03 July 2006 07:49
		RE: Container Test Campaign By: mef on Mon, 03 July 2006 18:23
		Re: Container Test Campaign By: kir on Mon, 03 July 2006 08:14
		Re: Container Test Campaign By: Clement Calmels on Tue, 04 July 2006 09:42
		Re: [Vserver] Re: Container Test Campaign By: kir on Tue, 04 July 2006 12:19
		Re: [Vserver] Re: Container Test Campaign By: Clement Calmels on Tue, 04 July 2006 13:54
		Re: [Vserver] Re: Container Test Campaign By: kir on Tue, 04 July 2006 14:52
		Re: [Vserver] Re: Container Test Campaign By: Cedric Le Goater on Tue, 04 July 2006 15:45
		Re: [Vserver] Re: Container Test Campaign By: Herbert Poetzl on Wed, 05 July 2006 14:02
		Re: Container Test Campaign By: Clement Calmels on Tue, 04 July 2006 12:34
		Re: Container Test Campaign By: Clement Calmels on Tue, 04 July 2006 13:02
		Re: [Vserver] Re: Container Test Campaign By: kir on Tue, 04 July 2006 16:30
		Re: [Vserver] Re: Container Test Campaign By: Clement Calmels on Wed, 05 July 2006 07:40
		Re: [Vserver] Re: Container Test Campaign By: kir on Wed, 05 July 2006 08:34
		Re: [Vserver] Re: Container Test Campaign By: dev on Wed, 05 July 2006 10:43
		Re: [Vserver] Re: Container Test Campaign By: Cedric Le Goater on Wed, 05 July 2006 13:06
		Re: [Vserver] Re: Container Test Campaign By: Gerrit Huizenga on Wed, 05 July 2006 22:37
		Re: [Vserver] Re: Container Test Campaign By: dev on Thu, 06 July 2006 10:44
		Re: [Vserver] Re: Container Test Campaign By: Gerrit Huizenga on Thu, 06 July 2006 14:12
		Re: [Vserver] Re: Container Test Campaign By: dev on Mon, 10 July 2006 08:16
		Re: [Vserver] Re: Container Test Campaign By: Herbert Poetzl on Thu, 06 July 2006 10:54
		Re: [Vserver] Re: Container Test Campaign By: Cedric Le Goater on Wed, 05 July 2006 12:31
		Re: [Vserver] Re: Container Test Campaign By: Herbert Poetzl on Thu, 06 July 2006 10:51
		Re: [Vserver] Re: Container Test Campaign By: dev on Thu, 06 July 2006 11:30
		Container Test Campaign By: Clement Calmels on Tue, 11 July 2006 08:45
		Re: Container Test Campaign By: Kirill Korotaev on Tue, 11 July 2006 09:18
		Re: Container Test Campaign By: Clement Calmels on Wed, 12 July 2006 16:31
		Re: [Vserver] Re: Container Test Campaign By: Herbert Poetzl on Thu, 13 July 2006 02:07

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