[SciPy-User] Multiprocessing and shared memory

Sturla Molden sturla@molden...
Sun Oct 18 23:50:12 CDT 2009


Felix Schlesinger skrev:
> Now that you say it, I agree, that really show be true (unless the kernel does
> some magic 'optimization' here and gets it very wrong). 
>   
It's not the kernel that actually does the copy-on-write. It's 
implemented in hardware (the paging memory management unit). A page (4k) 
will be copied if it's marked for copy on write.

S.M.


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