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freebsd-nq/module/zfs
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Prakash Surya f521ce1b9c Allow "arc_p" to drop to zero or grow to "arc_c" 
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
2014-02-21 16:10:27 -08:00
..
arc.c
Allow "arc_p" to drop to zero or grow to "arc_c"
2014-02-21 16:10:27 -08:00
bplist.c
Illumos #3464
2013-09-04 16:01:24 -07:00
bpobj.c
Illumos #3603, #3604: bobj improvements
2013-10-31 14:57:51 -07:00
bptree.c
26126 panic system rather than corrupting pool if we hit bug 26100
2013-11-05 13:18:26 -08:00
dbuf_stats.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
dbuf.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
ddt_zap.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
ddt.c
Add ddt, ddt_entry, and l2arc_hdr caches
2014-01-07 10:33:11 -08:00
dmu_diff.c
Illumos #3598
2013-10-31 14:58:04 -07:00
dmu_object.c
Illumos #3598
2013-10-31 14:58:04 -07:00
dmu_objset.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
dmu_send.c
Add zfs_send_corrupt_data module option
2013-12-18 16:46:35 -08:00
dmu_traverse.c
Illumos 4504 traverse_visitbp: visit group before user
2014-01-29 15:50:49 -08:00
dmu_tx.c
4188 assertion failed in dmu_tx_hold_free(): dn_datablkshift != 0
2014-01-31 10:49:34 -08:00
dmu_zfetch.c
Use enum type(zfetch_dirn_t) instead
2014-01-23 12:56:33 -08:00
dmu.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
dnode_sync.c
Illumos #3742
2013-11-04 10:55:25 -08:00
dnode.c
Illumos #4045 write throttle & i/o scheduler performance work
2013-12-06 09:32:43 -08:00
dsl_dataset.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
dsl_deadlist.c
Illumos #3104: eliminate empty bpobjs
2013-01-08 10:35:43 -08:00
dsl_deleg.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
dsl_destroy.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
dsl_dir.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
dsl_pool.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
dsl_prop.c
Illumos #3742
2013-11-04 10:55:25 -08:00
dsl_scan.c
Add erratum for issue #2094
2014-02-21 12:10:40 -08:00
dsl_synctask.c
Illumos #3598
2013-10-31 14:58:04 -07:00
dsl_userhold.c
Some nvlist allocations in hold processing need to use KM_PUSHPAGE.
2013-12-02 14:02:46 -08:00
fm.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
gzip.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
lz4.c
Force LZ4_FORCE_SW_BITCOUNT for Sparc
2014-01-09 15:54:03 -08:00
lzjb.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
Makefile.in
Add visibility in to cached dbufs
2013-10-25 13:59:40 -07:00
metaslab.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
refcount.c
Illumos #3464
2013-09-04 16:01:24 -07:00
rrwlock.c
Fix several new KM_SLEEP warnings
2013-09-25 15:44:22 -07:00
sa.c
Properly handle updates of variably-sized SA entries.
2013-12-20 13:52:33 -08:00
sha256.c
Add linux sha2 support
2010-08-31 13:41:59 -07:00
spa_boot.c
Add linux kernel module support
2010-08-31 13:41:58 -07:00
spa_config.c
Add generic errata infrastructure
2014-02-21 12:10:40 -08:00
spa_errlog.c
Illumos #3743
2013-11-04 10:55:25 -08:00
spa_history.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
spa_misc.c
Add ddt, ddt_entry, and l2arc_hdr caches
2014-01-07 10:33:11 -08:00
spa_stats.c
Revert changes to zbookmark_t
2014-02-21 12:10:39 -08:00
spa.c
Add generic errata infrastructure
2014-02-21 12:10:40 -08:00
space_map.c
Illumos #3464
2013-09-04 16:01:24 -07:00
txg.c
Call gethrtime() only once per new txg creation
2014-01-23 13:31:51 -08:00
uberblock.c
Illumos #3598
2013-10-31 14:58:04 -07:00
unique.c
Switch KM_SLEEP to KM_PUSHPAGE
2012-08-27 12:01:37 -07:00
vdev_cache.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
vdev_disk.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
vdev_file.c
vdev_file_io_start() to use taskq_dispatch(TQ_PUSHPAGE)
2014-01-23 09:58:07 -08:00
vdev_label.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
vdev_mirror.c
Illumos #4045 write throttle & i/o scheduler performance work
2013-12-06 09:32:43 -08:00
vdev_missing.c
Illumos #3598
2013-10-31 14:58:04 -07:00
vdev_queue.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
vdev_raidz.c
Illumos #4045 write throttle & i/o scheduler performance work
2013-12-06 09:32:43 -08:00
vdev_root.c
Illumos #3598
2013-10-31 14:58:04 -07:00
vdev.c
Illumos #4045 write throttle & i/o scheduler performance work
2013-12-06 09:32:43 -08:00
zap_leaf.c
Illumos #3598
2013-10-31 14:58:04 -07:00
zap_micro.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zap.c
Illumos #3743
2013-11-04 10:55:25 -08:00
zfeature_common.c
Illumos #3035 LZ4 compression support in ZFS and GRUB
2013-01-29 09:28:20 -08:00
zfeature.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zfs_acl.c
Allow chown/chgrp when no ACL SAs exist.
2014-01-23 11:07:29 -08:00
zfs_byteswap.c
Add linux kernel module support
2010-08-31 13:41:58 -07:00
zfs_ctldir.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zfs_debug.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zfs_dir.c
Illumos #4347 ZPL can use dmu_tx_assign(TXG_WAIT)
2013-12-06 09:30:51 -08:00
zfs_fm.c
Illumos #4045 write throttle & i/o scheduler performance work
2013-12-06 09:32:43 -08:00
zfs_fuid.c
Illumos #3522
2013-10-30 14:51:27 -07:00
zfs_ioctl.c
Fix the creation of ZPOOL_HIST_CMD pool history entries.
2014-01-07 09:00:26 -08:00
zfs_log.c
Only commit the ZIL once in zpl_writepages() (msync() case).
2013-11-23 15:08:29 -08:00
zfs_onexit.c
Illumos #3598
2013-10-31 14:58:04 -07:00
zfs_replay.c
Illumos #3598
2013-10-31 14:58:04 -07:00
zfs_rlock.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zfs_sa.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zfs_vfsops.c
Propagate errors when registering "relatime" property callback.
2014-02-12 09:38:28 -08:00
zfs_vnops.c
Fix zfs_getattr_fast types
2014-01-09 15:50:23 -08:00
zfs_znode.c
Implement relatime.
2014-01-29 15:50:44 -08:00
zil.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zio_checksum.c
Illumos #3598
2013-10-31 14:58:04 -07:00
zio_compress.c
Illumos #3598
2013-10-31 14:58:04 -07:00
zio_inject.c
Illumos #3598
2013-10-31 14:58:04 -07:00
zio.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zle.c
Update core ZFS code from build 121 to build 141.
2010-05-28 13:45:14 -07:00
zpl_ctldir.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zpl_export.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zpl_file.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zpl_inode.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zpl_super.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zpl_xattr.c
cstyle: Resolve C style issues
2013-12-18 16:46:35 -08:00
zrlock.c
Export ZFS symbols needed by Lustre.
2010-09-17 16:24:15 -07:00
zvol.c
Use long holds in zvol_set_volsize()
2014-01-14 14:46:12 -08:00