Date: Mon, 5 Apr 2010 01:25:36 +0400 From: Mikle <nekoexmachina@gmail.com> To: Jeremy Chadwick <freebsd@jdc.parodius.com> Cc: freebsd-fs@freebsd.org Subject: Re: Strange ZFS performance Message-ID: <20100404212536.GA1159@takino.homeftp.org> In-Reply-To: <20100404204127.GA53469@icarus.home.lan> References: <20100404191844.GA5071@takino.homeftp.org> <20100404204127.GA53469@icarus.home.lan>
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--PNTmBPCT7hxwcZjr Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sun, Apr 04, 2010 at 01:41:27PM -0700, Jeremy Chadwick wrote: > Please provide the following output: > > 1) uname -a > 2) sysctl kstat.zfs.misc.arcstats > 3) smartctl -a /dev/ad12 FreeBSD takino.zet 8.0-STABLE FreeBSD 8.0-STABLE #0: Mon Mar 8 06:25:34 MSK 2010 root@takino.zet:/usr/obj/usr/src/sys/TAKINO amd64 (TAKINO is pretty basic untuned config, generic config plus ipfw-related things minus '-g' debug flag) sysctl & smart outputs are in the attaches. > Also, does rebooting the box restore write speed (yes, this is a serious > question/recommendation)? Yes, it did slightly: after reboot i got 6MB/s. Also, one more (may be) related thing: there was a power-crash some time ago. Wbr, --PNTmBPCT7hxwcZjr Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="smartctl.ad12.txt" smartctl 5.39.1 2010-01-28 r3054 [FreeBSD 8.0-STABLE amd64] (local build) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: Western Digital Caviar Green family Device Model: WDC WD10EADS-00M2B0 Serial Number: WD-WMAV50024981 Firmware Version: 01.00A01 User Capacity: 1,000,204,886,016 bytes Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Mon Apr 5 00:53:13 2010 MSD SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x84) Offline data collection activity was suspended by an interrupting command from host. Auto Offline Data Collection: Enabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: (19980) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. Conveyance Self-test supported. Selective Self-test supported. SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported. General Purpose Logging supported. Short self-test routine recommended polling time: ( 2) minutes. Extended self-test routine recommended polling time: ( 230) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x303f) SCT Status supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 1 3 Spin_Up_Time 0x0027 111 107 021 Pre-fail Always - 7441 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 488 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 3 9 Power_On_Hours 0x0032 093 093 000 Old_age Always - 5568 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 290 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 23 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 464 194 Temperature_Celsius 0x0022 114 098 000 Old_age Always - 33 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 1 200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 No self-tests have been logged. [To run self-tests, use: smartctl -t] SMART Selective self-test log data structure revision number 1 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS 1 0 0 Not_testing 2 0 0 Not_testing 3 0 0 Not_testing 4 0 0 Not_testing 5 0 0 Not_testing Selective self-test flags (0x0): After scanning selected spans, do NOT read-scan remainder of disk. If Selective self-test is pending on power-up, resume after 0 minute delay. --PNTmBPCT7hxwcZjr Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="sysctl.kstat.txt" kstat.zfs.misc.arcstats.hits: 10478566 kstat.zfs.misc.arcstats.misses: 2896913 kstat.zfs.misc.arcstats.demand_data_hits: 7189095 kstat.zfs.misc.arcstats.demand_data_misses: 2588712 kstat.zfs.misc.arcstats.demand_metadata_hits: 3289471 kstat.zfs.misc.arcstats.demand_metadata_misses: 308201 kstat.zfs.misc.arcstats.prefetch_data_hits: 0 kstat.zfs.misc.arcstats.prefetch_data_misses: 0 kstat.zfs.misc.arcstats.prefetch_metadata_hits: 0 kstat.zfs.misc.arcstats.prefetch_metadata_misses: 0 kstat.zfs.misc.arcstats.mru_hits: 4075848 kstat.zfs.misc.arcstats.mru_ghost_hits: 184856 kstat.zfs.misc.arcstats.mfu_hits: 6402718 kstat.zfs.misc.arcstats.mfu_ghost_hits: 59708 kstat.zfs.misc.arcstats.deleted: 2809459 kstat.zfs.misc.arcstats.recycle_miss: 2950531 kstat.zfs.misc.arcstats.mutex_miss: 3149 kstat.zfs.misc.arcstats.evict_skip: 34090903 kstat.zfs.misc.arcstats.hash_elements: 12170 kstat.zfs.misc.arcstats.hash_elements_max: 20747 kstat.zfs.misc.arcstats.hash_collisions: 363681 kstat.zfs.misc.arcstats.hash_chains: 1727 kstat.zfs.misc.arcstats.hash_chain_max: 5 kstat.zfs.misc.arcstats.p: 344023154 kstat.zfs.misc.arcstats.c: 414288960 kstat.zfs.misc.arcstats.c_min: 53456640 kstat.zfs.misc.arcstats.c_max: 427653120 kstat.zfs.misc.arcstats.size: 409855944 kstat.zfs.misc.arcstats.hdr_size: 2531984 kstat.zfs.misc.arcstats.l2_hits: 0 kstat.zfs.misc.arcstats.l2_misses: 0 kstat.zfs.misc.arcstats.l2_feeds: 0 kstat.zfs.misc.arcstats.l2_rw_clash: 0 kstat.zfs.misc.arcstats.l2_writes_sent: 0 kstat.zfs.misc.arcstats.l2_writes_done: 0 kstat.zfs.misc.arcstats.l2_writes_error: 0 kstat.zfs.misc.arcstats.l2_writes_hdr_miss: 0 kstat.zfs.misc.arcstats.l2_evict_lock_retry: 0 kstat.zfs.misc.arcstats.l2_evict_reading: 0 kstat.zfs.misc.arcstats.l2_free_on_write: 0 kstat.zfs.misc.arcstats.l2_abort_lowmem: 0 kstat.zfs.misc.arcstats.l2_cksum_bad: 0 kstat.zfs.misc.arcstats.l2_io_error: 0 kstat.zfs.misc.arcstats.l2_size: 0 kstat.zfs.misc.arcstats.l2_hdr_size: 0 kstat.zfs.misc.arcstats.memory_throttle_count: 39958287 --PNTmBPCT7hxwcZjr Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="sysctl.kstat.after_reboot.txt" kstat.zfs.misc.arcstats.hits: 70211 kstat.zfs.misc.arcstats.misses: 4902 kstat.zfs.misc.arcstats.demand_data_hits: 50240 kstat.zfs.misc.arcstats.demand_data_misses: 2813 kstat.zfs.misc.arcstats.demand_metadata_hits: 19971 kstat.zfs.misc.arcstats.demand_metadata_misses: 2089 kstat.zfs.misc.arcstats.prefetch_data_hits: 0 kstat.zfs.misc.arcstats.prefetch_data_misses: 0 kstat.zfs.misc.arcstats.prefetch_metadata_hits: 0 kstat.zfs.misc.arcstats.prefetch_metadata_misses: 0 kstat.zfs.misc.arcstats.mru_hits: 28017 kstat.zfs.misc.arcstats.mru_ghost_hits: 8 kstat.zfs.misc.arcstats.mfu_hits: 42194 kstat.zfs.misc.arcstats.mfu_ghost_hits: 0 kstat.zfs.misc.arcstats.deleted: 195 kstat.zfs.misc.arcstats.recycle_miss: 0 kstat.zfs.misc.arcstats.mutex_miss: 0 kstat.zfs.misc.arcstats.evict_skip: 1571 kstat.zfs.misc.arcstats.hash_elements: 6036 kstat.zfs.misc.arcstats.hash_elements_max: 6043 kstat.zfs.misc.arcstats.hash_collisions: 781 kstat.zfs.misc.arcstats.hash_chains: 454 kstat.zfs.misc.arcstats.hash_chain_max: 3 kstat.zfs.misc.arcstats.p: 283834368 kstat.zfs.misc.arcstats.c: 427653120 kstat.zfs.misc.arcstats.c_min: 53456640 kstat.zfs.misc.arcstats.c_max: 427653120 kstat.zfs.misc.arcstats.size: 409581888 kstat.zfs.misc.arcstats.hdr_size: 1261312 kstat.zfs.misc.arcstats.l2_hits: 0 kstat.zfs.misc.arcstats.l2_misses: 0 kstat.zfs.misc.arcstats.l2_feeds: 0 kstat.zfs.misc.arcstats.l2_rw_clash: 0 kstat.zfs.misc.arcstats.l2_writes_sent: 0 kstat.zfs.misc.arcstats.l2_writes_done: 0 kstat.zfs.misc.arcstats.l2_writes_error: 0 kstat.zfs.misc.arcstats.l2_writes_hdr_miss: 0 kstat.zfs.misc.arcstats.l2_evict_lock_retry: 0 kstat.zfs.misc.arcstats.l2_evict_reading: 0 kstat.zfs.misc.arcstats.l2_free_on_write: 0 kstat.zfs.misc.arcstats.l2_abort_lowmem: 0 kstat.zfs.misc.arcstats.l2_cksum_bad: 0 kstat.zfs.misc.arcstats.l2_io_error: 0 kstat.zfs.misc.arcstats.l2_size: 0 kstat.zfs.misc.arcstats.l2_hdr_size: 0 kstat.zfs.misc.arcstats.memory_throttle_count: 0 --PNTmBPCT7hxwcZjr--
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