Re: [PLEASE-TESTME] Zerocopy networking patch, 2.4.0-1

[Ingo Molnar <mingo@xxxxxxx>]

On Tue, 9 Jan 2001, Stephen Frost wrote:

>       Now, the interesting bit here is that the processes can grow to be
> pretty large (200M+, up as high as 500M, higher if we let it ;) ) and what
> happens with MOSIX is that entire processes get sent over the wire to
> other machines for work.  MOSIX will also attempt to rebalance the load on
> all of the machines in the cluster and whatnot so it can often be moving
> processes back and forth.

then you'll love the zerocopy patch :-) Just use sendfile() or specify
MSG_NOCOPY to sendmsg(), and you'll see effective memory-to-card
DMA-and-checksumming on cards that support it.

the discussion with Stephen is about various device-to-device schemes.
(which Mosix i dont think wants to use. Mosix wants to use memory to
device zero-copy, right?)

        Ingo