Re: writev performance
Re: writev performance
- Subject: Re: writev performance
- From: Quinn <email@hidden>
- Date: Mon, 8 Feb 2010 12:23:48 +0000
At 20:35 +1100 7/2/10, Godfrey van der Linden wrote:
I'm pretty sure that the 4Gbyte KVA on 32 bit is going to make the
uio_copyin() operations relatively expensive
Correct.
but what about the 64bit kernels do they naturally have better
access to user space mappings?
Yes.
K64 definitely changes the landscape for this sort of thing, but I
don't know whether it's enough to tip a balance like this.
S+E
--
Quinn "The Eskimo!" <http://www.apple.com/developer/>
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
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