Brian Behlendorf 0c5493d470 Add zfs_arc_memory_throttle_disable module option ... The way in which virtual box ab(uses) memory can throw off the free memory calculation in arc_memory_throttle(). The result is the txg_sync thread will effectively spin waiting for memory to be released even though there's lots of memory on the system. To handle this case I'm adding a zfs_arc_memory_throttle_disable module option largely for virtual box users. Setting this option disables free memory checks which allows the txg_sync thread to make progress. By default this option is disabled to preserve the current behavior. However, because Linux supports direct memory reclaim it's doubtful throttling due to perceived memory pressure is ever a good idea. We should enable this option by default once we've done enough real world testing to convince ourselve there aren't any unexpected side effects. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #938		2013-02-01 11:17:14 -08:00
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avl	Add script for builtin module building.	2012-07-26 13:45:09 -07:00
nvpair	Illumos #2619 and #2747	2013-01-08 10:35:35 -08:00
unicode	Add script for builtin module building.	2012-07-26 13:45:09 -07:00
zcommon	Illumos #3035 LZ4 compression support in ZFS and GRUB	2013-01-29 09:28:20 -08:00
zfs	Add zfs_arc_memory_throttle_disable module option	2013-02-01 11:17:14 -08:00
zpios	call_usermodehelper() should wait for process	2013-01-09 16:54:52 -08:00
.gitignore	Add .gitignore files to exclude build products	2010-01-08 11:35:17 -08:00
Makefile.in	Add script for builtin module building.	2012-07-26 13:45:09 -07:00