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MacBook Pro Getting ... Slooowwww...
My MacBook Pro has been acting rather sluggish lately. I’m getting pinwheels more often and sometimes a completely unresponsive system. I’ve monitored the CPU activity and there’s nothing unusual there. That has had me considering the disk. When the system slows down, I do tend to hear the disk softly clicking away. I had errors with the disk a month or two ago. The disk effectively disappeared and I had to boot from the OS X disk and repair it.
Since then the Disk Utility diagnositics report everything is fine, but even Jenny can tell that something is wrong. So this morning I installed smartmontools and this is what I found:
=== START OF INFORMATION SECTION ===
Device Model: Hitachi HTS541616J9SA00
Serial Number: SB2404SJH1TX0D
Firmware Version: SB4AC7CP
User Capacity: 160,041,885,696 bytes
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 7
ATA Standard is: ATA/ATAPI-7 T13 1532D revision 1
Local Time is: Wed Oct 31 09:53:17 2007 HKT
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
...
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 0x000b 100 100 062 Pre-fail Always - 0
2 Throughput_Performance 0x0005 100 100 040 Pre-fail Offline - 0
3 Spin_Up_Time 0x0007 222 222 033 Pre-fail Always - 1
4 Start_Stop_Count 0x0012 099 099 000 Old_age Always - 2599
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0
8 Seek_Time_Performance 0x0005 100 100 040 Pre-fail Offline - 0
9 Power_On_Hours 0x0012 089 089 000 Old_age Always - 4883
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 817
191 G-Sense_Error_Rate 0x000a 100 100 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 146046451720
193 Load_Cycle_Count 0x0012 075 075 000 Old_age Always - 257869
194 Temperature_Celsius 0x0002 152 152 000 Old_age Always - 36 (Lifetime Min/Max 19/45)
195 Hardware_ECC_Recovered 0x000a 076 076 000 Old_age Always - 20709376
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 1
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 253 000 Old_age Always - 0
223 Load_Retry_Count 0x000a 100 100 000 Old_age Always - 0
That Power-Off_Retract_Count is absurdly high, but
I’m not sure what that really means. If anyone has some ideas, let me know.
About Cubicle Muses
Cubicle Muses is a weblog written by J. Aaron Farr and William Taysom, co-founders of JadeTower. We write about software programming, startups and life in Asia.
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