> On Jul 16, 2013, at 6:43 PM, Robert O'Callahan <robert@ocallahan.org> wrote: > >> On Wed, Jul 17, 2013 at 1:27 PM, Jer Noble <jer.noble@apple.com> wrote: >>> On Jul 16, 2013, at 1:18 PM, K. Gadd <kg@luminance.org> wrote: >>> This claim has been made dozens of times now on the list and I've seen multiple requests for even a single test case that demonstrates the performance impact. Is there one? I haven't seen one, nor a comment to the effect that one exists, or an explanation of why there isn't one. >> >> Isn't this self-evident? Any solution which involves additional memcopy calls during the normal use of the API will have an inherant and known performance cost at the point of the memcopy. > > It's self-evident that there is some cost. It's not as self-evident that this cost is "unacceptable" or "very very important". That's absolutely true, though I'd argue that a naive "copy everything!" approach is self-evidently "bad enough". :-) -Jer
Received on Wednesday, 17 July 2013 06:31:24 UTC