On Thu, Mar 20, 2025 at 04:41:11AM +0100, Luis Chamberlain wrote: > We've been constrained to a max single 512 KiB IO for a while now on x86_64. > This is due to the number of DMA segments and the segment size. With LBS the > segments can be much bigger without using huge pages, and so on a 64 KiB > block size filesystem you can now see 2 MiB IOs when using buffered IO. Actually up to 8 MiB I/O with 64k filesystem block size with buffered I/O as we can describe up to 128 segments at 64k size. Daniel
