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CAM. This can significantly improve performance particularly for SSDs which don't suffer from seek latencies. The sysctl / tunable kern.cam.sort_io_queues provides the systems default setting where:- 0 = queued BIOs are NOT sorted 1 = queued BIOs are sorted (default) Each device gets its own sysctl kern.cam.<type>.<id>.sort_io_queue Valid values are:- -1 = use system default (default) 0 = queued BIOs are NOT sorted 1 = queued BIOs are sorted Note: Additional patch will look to add automatic use of none sorted queues for none rotating media e.g. SSD's Reviewed by: scottl Approved by: pjd (mentor) MFC after: 2 weeks |
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ata_all.c | ||
ata_all.h | ||
ata_da.c | ||
ata_pmp.c | ||
ata_xpt.c |