Max Grossman 36283ca233 Illumos 5138 - add tunable for maximum number of blocks freed in one txg ... Reviewed by: Adam Leventhal <adam.leventhal@delphix.com> Reviewed by: Mattew Ahrens <mahrens@delphix.com> Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net> Reviewed by: Richard Elling <richard.elling@gmail.com> Reviewed by: George Wilson <george.wilson@delphix.com> Approved by: Dan McDonald <danmcd@omniti.com> References: https://www.illumos.org/issues/5138 https://github.com/illumos/illumos-gate/commit/af3465d Porting notes: Because support for exposing a uint64_t parameter wasn't added until v3.17-rc1 the zfs_free_max_blocks variable has been declared as a unsigned long. This is already far larger than required and it allows us to avoid additional autoconf compatibility code. The default value has been set to 100,000 on Linux instead of ULONG_MAX which is used on Illumos. This was done to limit the number of outstanding IOs in the system when snapshots are destroyed. This helps ensure individual TXG sync times are kept reasonable and memory isn't wasted managing a huge backlog of outstanding IOs. Ported by: Turbo Fredriksson <turbo@bayour.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2675 Closes #2581		2014-09-23 14:26:34 -07:00
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Makefile.am	Initial attempt to document events and payloads.	2014-07-25 11:58:36 -07:00
vdev_id.conf.5	vdev_id: support per-channel slot mappings	2014-01-17 11:17:54 -08:00
zfs-events.5	Initial attempt to document events and payloads.	2014-07-25 11:58:36 -07:00
zfs-module-parameters.5	Illumos 5138 - add tunable for maximum number of blocks freed in one txg	2014-09-23 14:26:34 -07:00
zpool-features.5	Illumos 4757, 4913	2014-08-01 14:28:05 -07:00