[K12OSN] Re: [openMosix-general] openMosix OpenOffice, Mozilla: Migrate or
Moshe Bar (moshe@Moelabs.com)
Mon, 14 Oct 2002 18:49:08 +0200 (IST)
>
> Instead of having the threads migrate to seperate nodes, and use DSM on the
> seperate nodes, couldn't you migrate the shared memory to one node, all
> shared memory, all threads, all pids to one node. The only difference is
> that they are not on the home node.
You are asking to migrate considerably more than just a hitherto
non-migrateable application. You are asking to migrate potentially much
more than that. Consider that migration often doesn't make sense because
of the latency involved in shipping the address space over the network.
Your solution fails exactly on this issue.
>
> While mozilla and openoffice will fit into 64mb now, if you add another large
> threaded app the node will have to swap.
But there are many other processes next to mozilla and openoffice (I won't
even start to complain why one has to have a half-gigabyte machine to type
a letter or do some spreadshit, while I did exactly the same thing, 15
years ago with a 32KB Apple.) that can be sent away. Basically everything,
including sendmail, gpm, and what have you not can be moved away.
> I inderstand this also, I'm just asking if there couldn't be an intermediate
> step. Is that step possible? If it is, would it move the code in the right
> direction, or would it have to be removed once full DSM is implemented?
I am afraid not.
Moshe
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