diff options
| author | Daniel Wagner <dwagner@suse.de> | 2023-12-18 17:59:54 +0100 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2023-12-19 09:10:13 -0800 |
| commit | 963929615194d163a25e3b536cd990a05d7e9439 (patch) | |
| tree | 97b72d232cfed6fe1cf47b239257a869d3f20a4c /tools/perf/scripts/python/stackcollapse.py | |
| parent | a1a825ab6a60380240ca136596732fdb80bad87a (diff) | |
nvme: repack struct nvme_ns_head
ns_id, lba_shift and ms are always accessed for every read/write I/O in
nvme_setup_rw. By grouping these variables into one cacheline we can
safe some cycles.
4k sequential reads:
baseline patched
Bandwidth: 1620 1634
IOPs 66345579 66910939
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions