Re: unusable migration daemon for 2.6

Very cool, Niels!! I can't wait to try the migration daemon!

Moshe


On 9/21/05, Niels de Vos <[email protected]> wrote:
> Hello everyone,
>
> Today I'be put up an anonymous svn-server for downloading my python
> migration daemon. As I'm only having my laptop for testing at the
> moment, the daemon is NOT TESTED AT ALL. My previous message was about
> kernel-panics on manual migration. As long as I'm not able to migrate a
> process by hand, I won't be testing migration-functionality... That far
> for a migration-daemon :(
>
> The principle of the daemon is fairly easy. There is an agent and a
> master implemented. The master should run on a
> 'master-server' (processes are started from here), the agent runs on
> dumb-nodes. Every second or so, the /proc-directory is checked for
> processes to migrate. When a candidate is found, the master sends a
> migration-request to a free (load <= 0.50 - for now) agent. The agent
> checks the migration-request (containing all info from /proc/<pid>/stat
> and more) and decides to accept/decline migration.
>
> An agent anounces itself every 30 seconds, by broadcasting it's
> load-info and ip-address. The master keeps a list of migrated-processes,
> agents, migratable-processes and things like that.
>
> The real schedulers are very simple, a port of the 2.4-om-scheduler is
> planned. Because of the little documentation, this is not expected to be
> done soon. For the moment the agent doesn't do any scheduling (always
> accepts migrationrequests) and the master takes a random process to
> migrate.
>
> If someone could have a look at this and make suggestions of some kind,
> I would really be pleased.
>
> You can download my code like this:
> $ svn co http://nixbox.nixpanic.net/repos/dev/om-userspace nixpanic-omus
>
> All scripts are than located in 'nixpanic-omus/trunk/src'. The
> start-script is called 'omd', use it like './omd agent' or './omd
> master'. All debugging is turned on by default, no cmd-line-options to
> turn it off at the moment. As said before, it's only tested on
> 'localhost' without really migrating anything...
>
> Thanks for reading this and sending a reply :)
> Niels
>
> PS: As I'm in the middle of moving between appartments, I can only read
> my email rarely; living in Berlin (GMT+1) earliest friday afternoon,
> don't expect fast replies...sorry
>
>
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>


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