Messages in this thread | | | From | (Larry McVoy) | Subject | Re: Lets get this right (WAS RE:MOSIX and kernel mods) | Date | Sun, 07 Mar 1999 00:28:14 -0800 |
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: Sounds good for the different processes case. But I was thinking of : the shared VM case (threads), where you don't (ideally) even have to : do that. : : Perhaps the best approach is to define extended send semantics to : "send and I don't mind if my buffer is modified". That would be much : simpler than stuffing around in the VM layer to do all kinds of : tricks. Tricks that probably won't work in a shared VM environment : anyway.
Yes, except that those semantics aren't what people are willing to accept.
And the tricks work just fine in a shared VM - you can mark anything copy on write. Besides, SGI uses sproc() for threads (an early version of clone() ).
: > For small data, it was just a copy and a wakeup. : : How small is "small"?
Anything less than a page.
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