On Mon, 14 Dec 2020, XSLT2.0 via curl-library wrote:
But instructions you don't do are always faster than the one you do,
aren't they? This means efficiency, so less CPU for the same task.
It means less CPU for that particular copy, yes. But it might mean more CPU
for logic around it, it might mean a larger and more complicated source code
to do it and it might mean adding more tests and complexity due to more code
paths and possibilities... which might lead to more bugs etc.
Optimizing is not a one dimension game. It's a balance.
That's why I emphasize that there needs to be a proven benefit to do something
like a zero-copy API for it to be worthwhile. Probably by doing a first
prototype implementation which can be used to run benchmarks.
I mean any "significant" piece of code, not too short like examples in the
official documentation and not too big (the size of fcurl is ideal) that
uses "multi-socket" to get a taste and try to understand the subtle
differences between multi-select and multi-socket!
I don't know. I don't keep any records of what libcurl-using applications use
what libcurl API.
The primary difference is that multi-socket is for event-driven traffic and
multi-select is for select() loops.
--
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