[mythtvnz] Recording dropouts and disk performance...
Douglas Pearless
Douglas.Pearless at pearless.co.nz
Mon Feb 18 08:12:50 GMT 2013
I had a similar problem a while ago and it turned out to be the IRQ that the SATA controller was using was shared with the video card and a whole bunch of other things.You may want to turn off as many peripherals in the motherboard BIOS (e.g. COM1, LPT1, etc) that you are not using and try to move the SATA controller onto its own IRQ, is there anything else on the SATA controller?Perhaps a DVD, try disconnecting that?Also, you may want to consider putting each of the drives (I recall you are using software raid-1?) on their own controller as a last resort.Cheers DouglasQuoting Rob Connolly <rob at webworxshop.com>:
> On Sun, Feb 17, 2013 at 06:00:54PM +1300, Steve Hodge wrote:
>> Yeah, it's frustrating when something that was fine suddenly has
>> problems. I saw your hdparm speed tests - they look fine and they're
>> definitely using DMA - you can't hit 100MB/s without DMA. One thing I'd
>> check is the SMART data (e.g. using smartctl). If one of the drives is
>> starting to fail that might explain it.
>> Cheers,
>> Steve
>>
>
> Below is the output from smartctl -a for both drives. I can't see
> anything untoward, but I thought I'd post them for a second opinion.
>
> Cheers,
>
> Rob
>
> sda:
>
> smartctl 6.0 2012-10-10 r3643 [i686-linux-3.6.5-1-ARCH] (local build)
> Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org
>
> === START OF INFORMATION SECTION ===
> Model Family: Western Digital Caviar Green (AF)
> Device Model: WDC WD20EARX-008FB0
> Serial Number: WD-WCAZAD986001
> LU WWN Device Id: 5 0014ee 207099b85
> Firmware Version: 51.0AB51
> User Capacity: 2,000,398,934,016 bytes [2.00 TB]
> Sector Sizes: 512 bytes logical, 4096 bytes physical
> Device is: In smartctl database [for details use: -P show]
> ATA Version is: ATA8-ACS (minor revision not indicated)
> SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
> Local Time is: Mon Feb 18 19:47:49 2013 NZDT
> 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: (0x82) Offline data collection activity
> was completed without error.
> 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: (33960) 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: ( 365) minutes.
> Conveyance self-test routine
> recommended polling time: ( 5) minutes.
> SCT capabilities: (0x30b5) 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 - 0
> 3 Spin_Up_Time 0x0027 201 185 021 Pre-fail
> Always - 4908
> 4 Start_Stop_Count 0x0032 100 100 000 Old_age
> Always - 12
> 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail
> Always - 0
> 7 Seek_Error_Rate 0x002e 200 200 000 Old_age
> Always - 0
> 9 Power_On_Hours 0x0032 093 093 000 Old_age
> Always - 5543
> 10 Spin_Retry_Count 0x0032 100 253 000 Old_age
> Always - 0
> 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age
> Always - 0
> 12 Power_Cycle_Count 0x0032 100 100 000 Old_age
> Always - 12
> 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age
> Always - 7
> 193 Load_Cycle_Count 0x0032 200 200 000 Old_age
> Always - 20
> 194 Temperature_Celsius 0x0022 114 110 000 Old_age
> Always - 36
> 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 - 0
> 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
> Num Test_Description Status Remaining
> LifeTime(hours) LBA_of_first_error
> # 1 Extended offline Completed without error 00% 5503
> -
> # 2 Extended offline Completed without error 00% 5252
> -
>
> 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.
>
> sdb:
>
> smartctl 6.0 2012-10-10 r3643 [i686-linux-3.6.5-1-ARCH] (local build)
> Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org
>
> === START OF INFORMATION SECTION ===
> Model Family: Western Digital Caviar Green (AF)
> Device Model: WDC WD20EARX-00PASB0
> Serial Number: WD-WCAZAA880394
> LU WWN Device Id: 5 0014ee 2065c06a8
> Firmware Version: 51.0AB51
> User Capacity: 2,000,398,934,016 bytes [2.00 TB]
> Sector Sizes: 512 bytes logical, 4096 bytes physical
> Device is: In smartctl database [for details use: -P show]
> ATA Version is: ATA8-ACS (minor revision not indicated)
> SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
> Local Time is: Mon Feb 18 19:47:56 2013 NZDT
> 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: (0x82) Offline data collection activity
> was completed without error.
> 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: (38400) 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: ( 370) minutes.
> Conveyance self-test routine
> recommended polling time: ( 5) minutes.
> SCT capabilities: (0x3035) 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 181 163 021 Pre-fail
> Always - 5925
> 4 Start_Stop_Count 0x0032 100 100 000 Old_age
> Always - 60
> 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail
> Always - 0
> 7 Seek_Error_Rate 0x002e 200 200 000 Old_age
> Always - 0
> 9 Power_On_Hours 0x0032 085 085 000 Old_age
> Always - 11192
> 10 Spin_Retry_Count 0x0032 100 253 000 Old_age
> Always - 0
> 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age
> Always - 0
> 12 Power_Cycle_Count 0x0032 100 100 000 Old_age
> Always - 57
> 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age
> Always - 19
> 193 Load_Cycle_Count 0x0032 198 198 000 Old_age
> Always - 6159
> 194 Temperature_Celsius 0x0022 112 107 000 Old_age
> Always - 38
> 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 - 0
> 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
> Num Test_Description Status Remaining
> LifeTime(hours) LBA_of_first_error
> # 1 Extended offline Completed without error 00% 11152
> -
> # 2 Extended offline Completed without error 00% 10901
> -
>
> 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.
>
>
> _______________________________________________
> mythtvnz mailing list
> mythtvnz at lists.linuxnut.co.nz
> http://lists.ourshack.com/mailman/listinfo/mythtvnz
> Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ourshack.com/pipermail/mythtvnz/attachments/20130218/e6bf4fa5/attachment-0001.html>
More information about the mythtvnz
mailing list