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Low transfer hard drives
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miikew
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Joined: 28 Oct 2009
Posts: 77

PostPosted: Thu Jan 26, 2017 8:41 am    Post subject: Low transfer hard drives Reply with quote

Hi
how can i check if drives are properly setup and has maximum performance ?

i have 4x1tb drives, and 1x80gb for system (sda),
hdparm -t /dev/sdx :
sda Timing buffered disk reads: 212 MB in 3.02 seconds = 70.42 MB/sec
sdb Timing buffered disk reads: 428 MB in 3.02 seconds = 142.42 MB/sec
sdc Timing buffered disk reads: 374 MB in 3.02 seconds = 124.42 MB/sec
sdd Timing buffered disk reads: 10 MB in 3.02 seconds = 2.04 MB/sec
sde Timing buffered disk reads: 300 MB in 3.02 seconds = 99.42 MB/sec

moving big files between drives (5GB mkv) for sdd i get ~500KB/s on others i have 10-20MB/s but not stable,
i start googling and i found about some bug in kernels regarding DMA but dont know how to check it , webmin is rejecting any changes on ide parameters tab, can some1 help to figure it out whats going on ? from windows environment i know that transfer between this kind of drives should be on lvl 50-70MB/s
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gerasimos_h
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Joined: 09 Aug 2007
Posts: 1733
Location: Greece

PostPosted: Thu Jan 26, 2017 5:33 pm    Post subject: Reply with quote

Hi,

first of all, which kernel do you use and which bug are you referring to?

Also have you try from LiveCD to benchmark with "hdparm -Tt" , and also what is the result of SMART on sdd
Code:
smartctl -d auto -a /dev/sdd


Transfers may vary from disk to disk, especially those new green powered or advanced format crappy ones, in addition to poor SATA controllers on some MB e.t.c. but despite the above your sdd is not acting normal, have you try to at least fsck it, to clear out the filesystem failure?

gerasimos_h

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miikew
Member


Joined: 28 Oct 2009
Posts: 77

PostPosted: Fri Jan 27, 2017 6:35 am    Post subject: Reply with quote

here is smart status

root@mediaserv:~# smartctl -d auto -a /dev/sdd
smartctl 5.43 2012-06-30 r3573 [i686-linux-3.14.40-smp] (local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Model Family: Western Digital Caviar Green
Device Model: WDC WD10EADS-00R6B0
Serial Number: WD-WCAVY5104214
LU WWN Device Id: 5 0014ee 25a215650
Firmware Version: 01.00A01
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
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: Fri Jan 27 07:43:24 2017 CET
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: (26460) 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: ( 303) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x303f) SCT Status supported.
SCT Error Recovery Control 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 144 140 021 Pre-fail Always - 9758
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 845
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 059 059 000 Old_age Always - 30549
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 - 745
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 711
193 Load_Cycle_Count 0x0032 196 196 000 Old_age Always - 14513
194 Temperature_Celsius 0x0022 114 090 000 Old_age Always - 38
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 199 199 000 Old_age Always - 222
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 183 070 000 Old_age Offline - 2732

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.
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miikew
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Joined: 28 Oct 2009
Posts: 77

PostPosted: Fri Jan 27, 2017 6:38 am    Post subject: Reply with quote

here my system
System operacyjny Slackware Linux 14.0
Wersja Webmin 1.831
Czas systemowy Fri Jan 27 07:49:17 2017
Kernel i CPU Linux 3.14.40-smp na i686
Informacje o procesorze AMD Athlon(tm) II X2 250u Processor, 2 rdzeni
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gerasimos_h
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Joined: 09 Aug 2007
Posts: 1733
Location: Greece

PostPosted: Fri Jan 27, 2017 8:37 am    Post subject: Reply with quote

Your sdd drive is failing, according to Current pending sectors which are 222 and they will grow when days passed...

gerasimos_h

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