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9639296151
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> |
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