From: David Howells

Sent: 14 September 2023 23:15

Add kunit tests to benchmark 256MiB copies to a UBUF iterator and an IOVEC
iterator.  This attaches a userspace VM with a mapped file in it
temporarily to the test thread.

Isn't that going to be completely dominated by the cache fills
from memory?

I'd have thought you'd need to use something with a lot of
small fragments so that the iteration code dominates the copy.

Some measurements can be made using readv() and writev()
on /dev/zero and /dev/null.

	David

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