Re: nethack, you *will* migrate, really!! : suggestion for double request checking...

Florian Delizy <[email protected]> Mon, 02 Oct 2006 10:00:07 +0200
Newsgroups gmane.linux.cluster.openmosix.devel
Message-ID <[email protected]>
Vincent Hanquez wrote:
> On Fri, Sep 29, 2006 at 11:22:28PM +0200, Florian Delizy wrote:
>   
>> I found the reason why the nethack process would not migrate, tell me if 
>> I am wrong, but it seems that processes can only migrate on sycall enter 
>> (or schedule enter).
>>
>> If the move request gets to the task during a syscall, it is simply 
>> discarded, and the process does not migrate at all. I understand this 
>> makes sense for a normal HPC process (cpu consuming, means, no or nearly 
>> no syscall), but I think it would make sense to try migration on syscall 
>> exit (this is what this patch should do).
>>
>> Vincent, can you please tell me if I am right ? or so ?
>>     
>
> Are you using PREEMPT ?
>
>   
Nope (not yet?)

Anyway, after we discussed on MSN, it seems that there is a hook missing 
in syscall_ret_carefull, I'll check that out today

(just to let the list know ...)

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