[ug-bosug] Belenix 0.7 can boot from RAM

Ajey Gore ajey at thoughtworks.net
Sun May 4 19:10:26 PDT 2008 

Okay this has taken a very wrong turn here.

I simply meant ­ a practical use of this application where we want to run a
production size build and deploy pipeline will require a good amount of RAM.
I did not say that minimum requirement is 2 GB.

Nothing more and nothing less.


On 5/4/08 8:58 PM, "sham pavman" <shampavman.cg at gmail.com> wrote:

> Hi all,
> The aim of this project is to,
> Provide boottime option to load cdrom contents into ramdisk or a harddisk
> partition. This will speed up subsequent bootup. The Ramdisk module currently
> depends on contiguous chunk of physical memory available to do this. This may
> not be available early on in Boot. It needs to be investigated whether the
> Ramdisk module can be extended to use an array of non-contiguous storage
> chunks. 
>  
> (flicked from belenix.org <http://belenix.org>  :))
>  
> Regards
> Shampavman
> 
> On Mon, May 5, 2008 at 7:24 AM, sham pavman <shampavman.cg at gmail.com> wrote:
>> Hi all,
>> This is in response to Ajey's queries!!!
>> I am not clearing understanding what your trying to say?
>> Could you be more specific?
>> If your telling that one needs to have atleast 2gb of ram for all this to be
>> working then its worng!!
>> I did all my testing ,on virtualbox and i had allocated a gb of ram ...
>> I did not see any performance hits at all,also if its the case on Virtualbox
>> then i guess you could be pretty sure that performace hits are unlikely when
>> run on the physical machine itslef!!!!
>> Could you be more specific?
>>  
>> Regards
>> Shampavman
>> 
>> On Mon, May 5, 2008 at 7:05 AM, Ajey Gore <ajey at thoughtworks.net> wrote:
>>> No.. I am not. Basically, What I did not realize that mail did not go
>>> throught completely.
>>> 
>>> That means we need 160 GB Ram :-)
>>> 
>>> If we have to run one of the build and deployment environment of live CD.
>>> 
>>> Or if want to do a LOT of stuff on high computing. Then I do not think that
>>> you can eventually do everything off normal 2 - 4 GB Ram.
>>> 
>>> It was not a criticism, its kind of realization that whats happening in
>>> other world. Google already has almost everything in Ram.
>>> 
>>> 
>>> On 5/4/08 3:56 PM, "Sriram Narayanan" <sriramnrn at gmail.com> wrote:
>>> 
>>>> What does "That means we need 160 GB Ram :-) " mean ?
>>>> 
>>>> Other folks on this list are like me - we take things literally and
>>>> would assume that you have either mis understood or are criticizing
>>>> this notion.
>>>> 
>>>> -- Ram
>>>> 
>>>> ---------- Forwarded message ----------
>>>> From: Ajey Gore <ajey at thoughtworks.net>
>>>> Date: Sun, May 4, 2008 at 1:23 PM
>>>> Subject: Re: [ug-bosug] Belenix 0.7 can boot from RAM
>>>> To: Bangalore OpenSolaris User Group <ug-bosug at opensolaris.org>,
>>>> Moinak Ghosh <moinakg at gmail.com>
>>>> 
>>>> 
>>>> That means we need 160 GB Ram :-)
>>>> 
>>>> 
>>>> 
>>>> 
>>>>  On 5/4/08 2:11 PM, "Moinak Ghosh" <moinakg at gmail.com> wrote:
>>>> 
>>>>> On Mon, May 5, 2008 at 12:29 AM, Sriram Narayanan
>>>> <sriramnrn at gmail.com> wrote:
>>>>>> Wow ! :) Now that is a cool thing :)
>>>>>> 
>>>>>> 
>>>>>>  On Sun, May 4, 2008 at 10:52 AM, Joseph George <Joe.G at sun.com> wrote:
>>>>>>> I am not sure everyone on this list understands what this means to
>>>>>>>  BeleniX or another OpenSolaris LiveCD.
>>>>>>> 
>>>>>> 
>>>>>>  I agree.
>>>>>> 
>>>>>>  I can think of three different meanings for "Belenix boots from RAM" :D
>>>>>> 
>>>>>>  Some questions for you:
>>>>>>  - Would I now be able to do a PXE boot of Belenix ?
>>>>> 
>>>>>    No. This is a different piece. Loading the compressed image from
>>>>>    CDROM to RAM.
>>>>> 
>>>>>>  - Does this mean that I now have a means to remove the LiveCD
>>>> after bootup ?
>>>>> 
>>>>>    Yes.
>>>>> 
>>>>>>  - Would this mean that Xen could now boot the OS off RAM ?
>>>>> 
>>>>>    Should be yes.
>>>>> 
>>>>>>                 High speed bootups of VM instances containing Tomcat +
>>>>>>  a web app is a common use case in the Build + Virtualization world.
>>>>> 
>>>>>   If you want to do that you are better off using a different method.
>>>>> Create
>>>>>   a ramdisk using ramdiskadm and boot a VM off that.
>>>>> 
>>>>>   This work essentially gives a slow bootup (5+mins) but blinding fast
>>>>>   execution and very fast installation after being booted - since
>>>>> everything
>>>>>   is running off RAM.
>>>>> 
>>>>> Regards,
>>>>> Moinak.
>>>>> 
>>>>>> 
>>>>>>  It's really great to see new stuff, and I'm looking forward to seeing
>>>>>>  your presentation at BOSUG !
>>>>>> 
>>>>>>  -- Sriram
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>>>  ~Joe
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>>  On 04-May-08, at 10:32 PM, S h i v wrote:
>>>>>>> 
>>>>>>>> On Sun, May 4, 2008 at 9:55 AM, sham pavman
>>>>>>>> <shampavman.cg at gmail.com> wrote:
>>>>>>>>> Hi all,
>>>>>>>>> 
>>>>>>>>> Its done now.
>>>>>>>>> Belenix 0.7 can now boot from RAM!!!!
>>>>>>>>> 
>>>>>>>> 
>>>>>>>> Sounds good !
>>>>>>>> You should talk about it in the next UG meeting.
>>>>>>>> 
>>>>>>>> -Shiv
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