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authorMike McGowen <[email protected]>2022-02-01 15:48:48 -0600
committerMartin K. Petersen <[email protected]>2022-02-07 23:38:35 -0500
commit5d8fbce04d36dfd837d655e3d1b66e44b8fafbe5 (patch)
treef549a907dcf07b5a36394ffefb81be2fe1dd27e1 /tools/perf/scripts/python/bin/stackcollapse-report
parent3ada501d602abf02353445c03bb3258146445d90 (diff)
scsi: smartpqi: Speed up RAID 10 sequential reads
Use all data disks for sequential read operations. Testing discovered inconsistent performance on RAID 10 volumes when performing 256K sequential reads. The driver was only using a single tracker to determine which physical drive to send a request to for AIO requests. Change the single tracker (next_bypass_group) to an array of trackers based on the number of data disks in a row of the RAID map. Link: https://lore.kernel.org/r/[email protected] Reviewed-by: Kevin Barnett <[email protected]> Reviewed-by: Mike McGowen <[email protected]> Reviewed-by: Scott Benesh <[email protected]> Reviewed-by: Scott Teel <[email protected]> Signed-off-by: Mike McGowen <[email protected]> Signed-off-by: Don Brace <[email protected]> Signed-off-by: Martin K. Petersen <[email protected]>
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