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 - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
