On Fri, Jun 14, 2024 at 10:50:29AM +0000, Pankaj Raghav (Samsung) wrote: > From: Pankaj Raghav <[email protected]> > > Filesystems that support large folios can set the fgf order before > buffered write(see XFS iomap_write_begin()) that can provide as a hint > to page cache to allocate large folios, if possible. > > The first patch is a minor cleanup. > The second patch sets fgf order before starting the buffered write. > > I tested the performance on Samsung SSD 990 pro on a system with 64GB > RAM as follows: > > $ bcachefs format -f /dev/nvme0n1; > $ mount -t bcachefs /dev/nvme0n1 /mnt > $ fio --name=bcachefs --filename=/mnt/test --size=100G \ > --ioengine=io_uring --iodepth=16 --rw=write --bs=128k > > I measured the BW(MB/s) across three runs on 6.10-rc3: > Before patches: 2730 > After patches: 3430 (1.25x boost) > > With -o no_data_io mount option: > Before patches: 2920 > After patches: 4630 (1.5x boost) > > I was not able to test the patches with ktest due to some issue with > debian(some broken package issue). Maybe Kent can run it in his CI while > I try to fix ktest locally?
It's in my testing branch, results will be showing up here: https://evilpiepirate.org/~testdashboard/ci?branch=bcachefs-testing
