Brian Behlendorf 0b1401ee91 Add visibility in to txg sync behavior ... This change is an attempt to add visibility in to how txgs are being formed on a system, in real time. To do this, a list was added to the in memory SPA data structure for a pool, with each element on the list corresponding to txg. These entries are then exported through the kstat interface, which can then be interpreted in userspace. For each txg, the following information is exported: * Unique txg number (uint64_t) * The time the txd was born (hrtime_t) (*not* wall clock time; relative to the other entries on the list) * The current txg state ((O)pen/(Q)uiescing/(S)yncing/(C)ommitted) * The number of reserved bytes for the txg (uint64_t) * The number of bytes read during the txg (uint64_t) * The number of bytes written during the txg (uint64_t) * The number of read operations during the txg (uint64_t) * The number of write operations during the txg (uint64_t) * The time the txg was closed (hrtime_t) * The time the txg was quiesced (hrtime_t) * The time the txg was synced (hrtime_t) Note that while the raw kstat now stores relative hrtimes for the open, quiesce, and sync times. Those relative times are used to calculate how long each state took and these deltas and printed by output handlers. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>		2013-10-25 13:57:25 -07:00
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fm	3246 ZFS I/O deadman thread	2013-05-01 17:05:52 -07:00
fs	Illumos #2882, #2883, #2900	2013-09-04 15:49:00 -07:00
arc.h	Illumos #3464	2013-09-04 16:01:24 -07:00
avl_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
avl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
bplist.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
bpobj.h	Illumos #3104: eliminate empty bpobjs	2013-01-08 10:35:43 -08:00
bptree.h	Illumos #2619 and #2747	2013-01-08 10:35:35 -08:00
dbuf.h	Illumos #3464	2013-09-04 16:01:24 -07:00
ddt.h	Add ddt_object_count() error handling	2012-10-29 08:57:45 -07:00
dmu_impl.h	Illumos #2703: add mechanism to report ZFS send progress	2012-09-19 13:39:06 -07:00
dmu_objset.h	Illumos #3464	2013-09-04 16:01:24 -07:00
dmu_send.h	Illumos #3464	2013-09-04 16:01:24 -07:00
dmu_traverse.h	Illumos #3498 panic in arc_read()	2013-07-02 13:34:31 -07:00
dmu_tx.h	Illumos #3464	2013-09-04 16:01:24 -07:00
dmu_zfetch.h	Add missing ZFS tunables	2011-05-04 10:02:37 -07:00
dmu.h	Illumos #3464	2013-09-04 16:01:24 -07:00
dnode.h	Illumos #3122 zfs destroy filesystem should prefetch blocks	2013-07-02 13:34:02 -07:00
dsl_dataset.h	Illumos #3464	2013-09-04 16:01:24 -07:00
dsl_deadlist.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_deleg.h	Illumos #2882, #2883, #2900	2013-09-04 15:49:00 -07:00
dsl_destroy.h	Illumos #3464	2013-09-04 16:01:24 -07:00
dsl_dir.h	Illumos #3464	2013-09-04 16:01:24 -07:00
dsl_pool.h	Revert "Add txgs-<pool> kstat file"	2013-10-25 13:57:25 -07:00
dsl_prop.h	Illumos #3464	2013-09-04 16:01:24 -07:00
dsl_scan.h	Illumos #2619 and #2747	2013-01-08 10:35:35 -08:00
dsl_synctask.h	Illumos #3464	2013-09-04 16:01:24 -07:00
dsl_userhold.h	Illumos #3464	2013-09-04 16:01:24 -07:00
efi_partition.h	Move partition scanning from userspace to module.	2012-07-17 09:17:31 -07:00
Makefile.am	Illumos #3464	2013-09-04 16:01:24 -07:00
metaslab_impl.h	Illumos #3552, #3564	2013-06-19 16:22:39 -07:00
metaslab.h	Illumos #3464	2013-09-04 16:01:24 -07:00
nvpair_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
nvpair.h	Illumos #3464	2013-09-04 16:01:24 -07:00
refcount.h	Illumos #3464	2013-09-04 16:01:24 -07:00
rrwlock.h	Illumos #3464	2013-09-04 16:01:24 -07:00
sa_impl.h	Illumos #3208 cross-endian incorrect user/group accounting	2013-01-14 09:32:22 -08:00
sa.h	Add sa_spill_rele() interface	2012-03-07 16:28:00 -08:00
spa_boot.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
spa_impl.h	Add visibility in to arc_read	2013-10-25 13:57:25 -07:00
spa.h	Add visibility in to txg sync behavior	2013-10-25 13:57:25 -07:00
space_map.h	Illumos #3464	2013-09-04 16:01:24 -07:00
txg_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
txg.h	Illumos #3464	2013-09-04 16:01:24 -07:00
u8_textprep_data.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
u8_textprep.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uberblock_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uberblock.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uio_impl.h	Add basic uio support	2011-02-10 09:21:43 -08:00
unique.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uuid.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
vdev_disk.h	Linux 2.6.x compat, blkdev_compat.h	2011-02-23 12:29:38 -08:00
vdev_file.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
vdev_impl.h	Illumos #3618 ::zio dcmd does not show timestamp data	2013-08-12 16:46:50 -07:00
vdev.h	3246 ZFS I/O deadman thread	2013-05-01 17:05:52 -07:00
xvattr.h	Add xvattr support	2011-03-02 11:43:50 -08:00
zap_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zap_leaf.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zap.h	Illumos #3104: eliminate empty bpobjs	2013-01-08 10:35:43 -08:00
zfeature.h	Illumos #3464	2013-09-04 16:01:24 -07:00
zfs_acl.h	Fix build failures on PaX/GRSecurity patched kernels	2012-07-17 09:22:43 -07:00
zfs_context.h	Add visibility in to arc_read	2013-10-25 13:57:25 -07:00
zfs_ctldir.h	Linux 3.7 compat, schedule_delayed_work()	2012-12-12 10:47:05 -08:00
zfs_debug.h	Illumos #3464	2013-09-04 16:01:24 -07:00
zfs_dir.h	Prototype/structure update for Linux	2011-02-10 09:27:21 -08:00
zfs_fuid.h	Prototype/structure update for Linux	2011-02-10 09:27:21 -08:00
zfs_ioctl.h	Illumos #3464	2013-09-04 16:01:24 -07:00
zfs_onexit.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zfs_rlock.h	Range lock performance improvements	2011-03-08 12:44:06 -08:00
zfs_sa.h	Implement SA based xattrs	2011-11-28 15:45:51 -08:00
zfs_stat.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zfs_vfsops.h	Fix 'zfs rollback' on mounted file systems	2013-01-17 09:51:20 -08:00
zfs_vnops.h	Linux 3.11 compat: fops->iterate()	2013-08-15 16:19:07 -07:00
zfs_znode.h	Illumos #3464	2013-09-04 16:01:24 -07:00
zil_impl.h	Illumos #3086: unnecessarily setting DS_FLAG_INCONSISTENT on async	2013-01-08 10:35:43 -08:00
zil.h	Illumos #3464	2013-09-04 16:01:24 -07:00
zio_checksum.h	Constify structures containing function pointers	2013-03-04 08:49:32 -08:00
zio_compress.h	Linux 3.11 compat: Rename LZ4 symbols	2013-10-22 10:12:39 -07:00
zio_impl.h	Illumos #3329, #3330, #3331, #3335	2013-05-06 12:39:34 -07:00
zio.h	Add visibility in to arc_read	2013-10-25 13:57:25 -07:00
zpl.h	Linux 3.11 compat: fops->iterate()	2013-08-15 16:19:07 -07:00
zrlock.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zvol.h	Illumos #3464	2013-09-04 16:01:24 -07:00