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List:       openmosix-general
Subject:    Re: [openMosix-general] OpenMosix not migrating
From:       Lafeyette_Management <lafeyette_management () comcast ! net>
Date:       2003-12-27 0:59:32
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Amol Sapkal wrote:

Hi, Amol.

I'll try to help you if I can....

If /proc/self/lock shows a 0, then migration should be enabled.  If it 
is 1 (or some other value????) then migration will NOT take place--it is 
disabled.

You described your configuration, but not what you were hoping to 
accomplish with your cluster.  If you are trying to, say, load balance 
your database and web-servers, then openMosix probably won't be much 
help to you.  If, on the other hand, you are trying to run some 
processes in parallel for optimum performance (e.g. CPU intensive 
processes such as some bioinformatics packages, SetiAtHome or a 
parallelized batch of MP3 conversion jobs (Or any similar sort of 
cpu-intensive conversion/encoding job) such as voice signal 
processing/voice data processing or other numeric bulk data processing, 
then openMosix should be just the ticket.

Hope this helps!

Vance.


>>What is the result of cat /proc/self/lock on the machine you are 
> 
> running 
> 
>>the stress-test on?
>>
>>(Should be 0 or 1.)
> 
> 
> Vance,
> I did not check this when the stress test was conducted. Will get back 
> to you with the results, after a clean installation of OM on 2 of my 
> boxes. Could you help me with what does a 0 or 1 indicate?
> As suggested by someone here, I may look towards LVS also, as OM may 
> not be the exact solution to my problem.
> 
> 
> 
> Regards,
> Amol
> 
> 
> 
>>--Vance.
>>
>>
>>Amol Sapkal wrote:
>>
>>>Hi All,
>>>I am new to clustering and openmosix.
>>>-----------
>>>Scenario:
>>>I am running 3 nodes (RH releases) which I need to cluster using 
>>>openmosix (or piranha, but I suppose RedHat AS comes with a price 
> 
> tag). 
> 
>>>My servers are running the following:
>>>Server 1: MRTG server, collects data from 100 odd routers. Runs a 
> 
> lot 
> 
>>>of perl and cron jobs.
>>>Server 2: web server, will serve http requests. Pages/data will 
> 
> reside 
> 
>>>on server 1.
>>>Server 3: Planned to be a MySQL server.
>>>
>>>Currently I am running this as a all-in-one server.
>>>I have 2 test boxes (with different kernel versions). I downloaded 
> 
> the 
> 
>>>apporpriate OM patches and the openmosix tools on both boxes. 
>>>Everything runs fine, the servers recognise each other as valid 
>>>openmosix nodes. (showmap gives me this info).
>>>----------
>>>The problem is:
>>>When I put one of my nodes to stress test (using the example sited 
> 
> on 
> 
>>>http://howto.ipng.be/openMosix-HOWTO/c1301.html#AEN1303) *I do not 
> 
> see 
> 
>>>any process migration* to the other node (I used the om tools to 
> 
> check 
> 
>>>for process migration).
>>>
>>>Please help, my filesystem concepts are not very clear, I dont know 
>>>whether this problem is an outcome of a wrong filesystem setting or 
>>>wrong OM installation.
>>>--------
>>>
>>>TIA,
>>>Amol Sapkal
>>>
>>>
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