Garrett D'Amore a38718a63d Illumos #734: Use taskq_dispatch_ent() interface ... It has been observed that some of the hottest locks are those of the zio taskqs. Contention on these locks can limit the rate at which zios are dispatched which limits performance. This upstream change from Illumos uses new interface to the taskqs which allow them to utilize a prealloc'ed taskq_ent_t. This removes the need to perform an allocation at dispatch time while holding the contended lock. This has the effect of improving system performance. Reviewed by: Albert Lee <trisk@nexenta.com> Reviewed by: Richard Lowe <richlowe@richlowe.net> Reviewed by: Alexey Zaytsev <alexey.zaytsev@nexenta.com> Reviewed by: Jason Brian King <jason.brian.king@gmail.com> Reviewed by: George Wilson <gwilson@zfsmail.com> Reviewed by: Adam Leventhal <ahl@delphix.com> Approved by: Gordon Ross <gwr@nexenta.com> References to Illumos issue: https://www.illumos.org/issues/734 Ported-by: Prakash Surya <surya1@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #482		2011-12-14 09:19:30 -08:00
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kernel.c	Fix block device-related issues in zdb.	2010-12-14 09:52:46 -08:00
Makefile.am	Add proper library versioning	2011-07-06 09:20:28 -07:00
Makefile.in	Simplify BDI integration	2011-11-08 10:19:03 -08:00
taskq.c	Illumos #734: Use taskq_dispatch_ent() interface	2011-12-14 09:19:30 -08:00
util.c	Fix gcc cast warnings	2010-08-27 15:33:32 -07:00