ZFS Filesystem Post: 302953085

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Operating Systems Solaris ZFS Filesystem Post 302953085 by tharmendran on Tuesday 25th of August 2015 09:34:26 AM

08-25-2015

Registered User

Hi jlliagre,

Currently we use the affected filesystem to store database related files such tables,indexes.

Below is the our current ZFS setting. Mostly i heard arc_max,zfs:zfs_vdev_max_pending,ssd:ssd_max_throttle parameter need to fine tune. Is that rite?

Code:

arc_reduce_dnlc_percent = 0x3
zfs_arc_max = 0x0
zfs_arc_min = 0x0
arc_shrink_shift = 0x7
zfs_mdcomp_disable = 0x0
zfs_prefetch_disable = 0x0
zfetch_max_streams = 0x8
zfetch_min_sec_reap = 0x2
zfetch_block_cap = 0x100
zfetch_array_rd_sz = 0x100000
zfs_default_bs = 0x9
zfs_default_ibs = 0xe
metaslab_aliquot = 0x80000
mdb: variable reference_tracking_enable not found: unknown symbol name
mdb: variable reference_history not found: unknown symbol name
spa_max_replication_override = 0x3
spa_mode_global = 0x3
zfs_flags = 0x0
zfs_txg_synctime_ms = 0x1388
zfs_txg_timeout = 0x1e
zfs_write_limit_min = 0x2000000
zfs_write_limit_max = 0xfb4d0c00
zfs_write_limit_shift = 0x3
zfs_write_limit_override = 0x0
zfs_no_write_throttle = 0x0
zfs_vdev_cache_max = 0x4000
zfs_vdev_cache_size = 0x0
zfs_vdev_cache_bshift = 0x10
vdev_mirror_shift = 0x15
zfs_vdev_max_pending = 0xa
zfs_vdev_min_pending = 0x4
zfs_vdev_future_pending = 0xa
zfs_scrub_limit = 0xa
zfs_no_scrub_io = 0x0
zfs_no_scrub_prefetch = 0x0
zfs_vdev_time_shift = 0x6
zfs_vdev_ramp_rate = 0x2
zfs_vdev_aggregation_limit = 0x20000
fzap_default_block_shift = 0xe
zfs_immediate_write_sz = 0x8000
zfs_read_chunk_size = 0x100000
zfs_nocacheflush = 0x0
zil_replay_disable = 0x0
metaslab_gang_threshold = 0x100001
metaslab_df_alloc_threshold = 0x100000
metaslab_df_free_pct = 0x4
zio_injection_enabled = 0x0
zvol_immediate_write_sz = 0x8000

One more thing the documentation say need to change the logbias setting for database filesystem

My current database fileystem as below;

Code:

NAME           PROPERTY       VALUE         SOURCE
ora2pool/ora2  primarycache   all           default
ora2pool/ora2  recordsize     128K          default
ora2pool/ora2  compressratio  1.00x         -
ora2pool/ora2  compression    off           default
ora2pool/ora2  available      351G          -
ora2pool/ora2  used           484G          -
ora2pool/ora2  quota          none          default
ora2pool/ora2  logbias        latency       default

tharmendran

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tiffprintdirectory

TIFFPrintDirectory(3T)													    TIFFPrintDirectory(3T)

NAME

       TIFFPrintDirectory - print a description of a TIFF directory

SYNOPSIS

       #include <tiffio.h>
       void TIFFPrintDirectory(TIFF* tif, FILE* fd, long flags)

DESCRIPTION

       TIFFPrintDirectory  prints  a  description  of  the current directory in the specified TIFF file to the standard I/O output stream fd.  The
       flags parameter is used to control the level of detail of the printed information; it is a bit-or of the flags defined in tiffio.h:
       #define TIFFPRINT_NONE	       0x0     /* no extra info */
       #define TIFFPRINT_STRIPS        0x1     /* strips/tiles info */
       #define TIFFPRINT_CURVES        0x2     /* color/gray response curves */
       #define TIFFPRINT_COLORMAP      0x4     /* colormap */
       #define TIFFPRINT_JPEGQTABLES   0x100   /* JPEG Q matrices */
       #define TIFFPRINT_JPEGACTABLES  0x200   /* JPEG AC tables */
       #define TIFFPRINT_JPEGDCTABLES  0x200   /* JPEG DC tables */

NOTES

       In C++ the flags parameter defaults to 0.

RETURN VALUES

       None.

DIAGNOSTICS

       None.

SEE ALSO

       libtiff(3T), TIFFOpen(3T), TIFFReadDirectory(3T), TIFFSetDirectory(3T)

								 December 12, 1991					    TIFFPrintDirectory(3T)