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

[David S. Miller]

   Date: 	Wed, 10 Jan 2001 09:41:24 +0100
   From: Manfred Spraul <[e-mail]>

   That means sendmsg() changes the page tables?

Not in the zerocopy patch I am proposing and asking people to test.  I
stated in another email that MSG_NOCOPY was considered experimental
and thus left out of my patches.

   I measures smp_call_function on my Dual Pentium 350, and it took
   around 1950 cpu ticks.

And this is one of several reasons why the MSG_NOCOPY facility is
considered experimental.

Later,
David S. Miller
[e-mail]