I went to the datacenter and I have reinstalled my server last week. Unfortunately the hdparm results are terrible. The server hdparms with only 3.5 megabyte per second.....
This is a CentOS 5.3 server with software raid(1). Minimal install. Normal servers produce 40 MB/second for buffered disk reads with the same configuration.
Code:
[root@srv13 log]# ls -al /dev/hd*
brw-r----- 1 root disk 3, 0 May 14 19:38 /dev/hda
brw-r----- 1 root disk 3, 1 May 14 19:38 /dev/hda1
brw-r----- 1 root disk 3, 2 May 14 19:38 /dev/hda2
brw-r----- 1 root disk 22, 0 May 14 19:38 /dev/hdc
brw-r----- 1 root disk 22, 1 May 14 19:38 /dev/hdc1
brw-r----- 1 root disk 22, 2 May 14 19:38 /dev/hdc2
[root@srv13 log]# hdparm /dev/hdc
/dev/hdc:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 156301488, start = 0
[root@srv13 log]# hdparm -tT /dev/hdc
/dev/hdc:
Timing cached reads: 15868 MB in 1.99 seconds = 7963.41 MB/sec
Timing buffered disk reads: 12 MB in 3.10 seconds = 3.87 MB/sec
[root@srv13 log]# hdparm -tT /dev/hdc1
/dev/hdc1:
Timing cached reads: 15784 MB in 1.99 seconds = 7921.41 MB/sec
Timing buffered disk reads: 12 MB in 3.09 seconds = 3.89 MB/sec
[root@srv13 log]# ls
acpid anaconda.syslog boot.log btmp conman.old cron.1 dmesg lastlog maillog messages pm prelink rpmpkgs.1 secure.1 spooler.1 wtmp
anaconda.log audit boot.log.1 conman cron cups faillog mail maillog.1 messages.1 ppp rpmpkgs secure spooler tallylog yum.log
[root@srv13 log]# hdparm /dev/hdc
[root@srv13 log]# hdparm /dev/hda1
/dev/hda1:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 147894390, start = 8401995
[root@srv13 log]# hdparm -A1 /dev/hda
/dev/hda:
setting drive read-lookahead to 1 (on)
[root@srv13 log]# hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 15864 MB in 1.99 seconds = 7963.03 MB/sec
Timing buffered disk reads: 12 MB in 3.05 seconds = 3.93 MB/sec
[root@srv13 log]# hdparm -c1 -u1 /dev/hda
/dev/hda:
setting 32-bit IO_support flag to 1
setting unmaskirq to 1 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
[root@srv13 log]# hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 15756 MB in 1.99 seconds = 7908.56 MB/sec
Timing buffered disk reads: 24 MB in 3.08 seconds = 7.78 MB/sec
[root@srv13 log]# hdparm -c1 -u1 /dev/hdc
/dev/hdc:
setting 32-bit IO_support flag to 1
setting unmaskirq to 1 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
[root@srv13 log]# hdparm -Tt /dev/md0
/dev/md0:
Timing cached reads: 16256 MB in 1.99 seconds = 8159.62 MB/sec
Timing buffered disk reads: 24 MB in 3.06 seconds = 7.84 MB/sec
[root@srv13 log]# locate hdparm.conf
[root@srv13 log]#
Code:
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x02) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Disabled.
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: (1848) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No 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: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 30) minutes.
SCT capabilities: (0x003f) 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 0x000f 100 100 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0007 100 100 025 Pre-fail Always - 3968
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 54
5 Reallocated_Sector_Ct 0x0033 253 253 010 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 253 253 051 Pre-fail Always - 0
8 Seek_Time_Performance 0x0025 253 253 015 Pre-fail Offline - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 22464
10 Spin_Retry_Count 0x0033 253 253 051 Pre-fail Always - 0
11 Calibration_Retry_Count 0x0012 253 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 54
187 Reported_Uncorrect 0x0032 253 253 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 136 088 000 Old_age Always - 34
194 Temperature_Celsius 0x0022 136 088 000 Old_age Always - 34
195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 6251683
196 Reallocated_Event_Count 0x0032 253 253 000 Old_age Always - 0
197 Current_Pending_Sector 0x0012 253 253 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 253 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x000a 100 100 000 Old_age Always - 0
201 Soft_Read_Error_Rate 0x000a 100 100 000 Old_age Always - 0
202 TA_Increase_Count 0x0032 253 253 000 Old_age Always - 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 (0) should be 1
SMART Selective self-test log data structure revision number 0
Warning: ATA Specification requires 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.
[root@srv13 log]# smartctl -a /dev/hda1
smartctl version 5.38 [i686-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Model Family: SAMSUNG SpinPoint P80 SD series
Device Model: SAMSUNG HD080HJ
Serial Number: S08EJ20L502009
Firmware Version: ZH100-41
User Capacity: 80,026,361,856 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 7
ATA Standard is: ATA/ATAPI-7 T13 1532D revision 4a
Local Time is: Sun May 17 23:09:28 2009 CEST
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: (0x02) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Disabled.
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: (1848) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No 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: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 30) minutes.
SCT capabilities: (0x003f) 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 0x000f 100 100 051 Pre-fail Always - 0
3 Spin_Up_Time 0x0007 100 100 025 Pre-fail Always - 3968
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 54
5 Reallocated_Sector_Ct 0x0033 253 253 010 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 253 253 051 Pre-fail Always - 0
8 Seek_Time_Performance 0x0025 253 253 015 Pre-fail Offline - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 22464
10 Spin_Retry_Count 0x0033 253 253 051 Pre-fail Always - 0
11 Calibration_Retry_Count 0x0012 253 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 54
187 Reported_Uncorrect 0x0032 253 253 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0022 136 088 000 Old_age Always - 34
194 Temperature_Celsius 0x0022 136 088 000 Old_age Always - 34
195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 6251683
196 Reallocated_Event_Count 0x0032 253 253 000 Old_age Always - 0
197 Current_Pending_Sector 0x0012 253 253 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 253 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x000a 100 100 000 Old_age Always - 0
201 Soft_Read_Error_Rate 0x000a 100 100 000 Old_age Always - 0
202 TA_Increase_Count 0x0032 253 253 000 Old_age Always - 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 (0) should be 1
SMART Selective self-test log data structure revision number 0
Warning: ATA Specification requires 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.