2003-07-02 16:50:36

by Breno

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Subject: about send task

Hi people , i am thinking about process migration.
And the idea to transfer a simples task is:



Thread1 in NODE A <-------TCP CONN-----------> Thread2 in NODE B
__________________
__________________

- select task by
-verify the availability of these virtual addresses.

if it busy , free the memory of these virtual addresses.
- get structs mm , vma , task , zone , page
and copy all buffers existing in the

-alloc all the buffer of task.


- send all buffers to
-re-build structs (alloc_task_struct,page_zone,pte_page...)


-INIT_LIST_HEAD()


-wake_up_process()
-send all virtual addresses to thread2



Please , i?d like some comments/ideas about this.

thanks
Breno


2003-07-02 17:08:11

by Valdis Klētnieks

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Subject: Re: about send task

On Wed, 02 Jul 2003 14:03:38 -0300, Breno <[email protected]> said:

> if it busy , free the memory of these virtual addresses.
> - get structs mm , vma , task , zone , page
> and copy all buffers existing in the

> Please , i?d like some comments/ideas about this.

1) You forgot little details like "current working directory", "open files",
"file locks", "open TCP connections" and all the other process-state issues.
These turn out to be the real problems in migration.

2) http://www.mosix.org - it's not as easy as it looks.


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