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Prakash Surya
f521ce1b9c
Setting a limit on the minimum value of "arc_p" has been shown to have detrimental effects on the arc hit rate for certain "metadata" intensive workloads. Specifically, this has been exhibited with a workload that constantly dirties new "metadata" but also frequently touches a "small" amount of mfu data (e.g. mkdir's). What is seen is that the new anon data throttles the mfu list to a negligible size (because arc_p > anon + mru in arc_get_data_buf), even though the mfu ghost list receives a constant stream of hits. To remedy this, arc_p is now allowed to drop to zero if the algorithm deems it necessary. Signed-off-by: Prakash Surya <surya1@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #2110
Native ZFS for Linux!
ZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the Illumos community.
ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers.
Full documentation for installing ZoL on your favorite Linux distribution can be found at: http://zfsonlinux.org