about send task

about send task

[Breno]

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

Re: about send task[txt]

[Breno]

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Sorry , the body of this mail was not good

please , see the .txt file


thanks

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the idea to transfer a simples task is:



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

- select task by pid			              -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 	
  memory.	    				       -alloc all the buffer of task.
 		      					
							
- send all buffers to thread2			     -re-build structs (alloc_task_struct,page_zone,pte_page...)
 					     
						     -INIT_LIST_HEAD()
						     
						     -wake_up_process()
-send all virtual addresses to thread2



Breno

Re: about send task

[Valdis.Kletnieks]

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On Wed, 02 Jul 2003 14:03:38 -0300, Breno <brenosp@brasilsec.com.br>  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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