系统配置：戴尔 Inspiron N5010- 英特尔酷睿 i3 380M 2.53 GHz、4 GB DDR3 RAM、1 GB AMD RADEON 显卡、500 GB SATA 5400rpm HDD、Ubuntu MATE 15.10（这应该比 Ubuntu Unity 更轻量）
我使用 Windows 7 64 位双启动。
我的系统运行时非常慢，Ubuntu 比 Windows 更慢。视频一开始播放就卡住了。点击需要一两秒钟才能响应。即使 CTRL+ALT+T 也能加载 GUI，但提示需要 3-5 秒才能显示出来，我才能开始输入。更糟糕的是，大多数时候（10 次中有 8 次），它无法启动。它只是说 -未找到该分区（或类似的东西），然后进入 BIOS 显示循环。我不得不运行文件系统检查我已数不清有多少次手动操作过 /dev/sda6 了。
在这种情况下，瓶颈似乎是什么？是 RAM 还是 HDD？
请回复。谢谢。
smartctl 输出
ka@KA-Inspiron-N5010:~$ sudo smartctl --all /dev/sda
[sudo] password for ka:
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-4.2.0-16-generic] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Toshiba 2.5" HDD MK..76GSX
Device Model: TOSHIBA MK5076GSX
Serial Number: X1MLC0FMT
LU WWN Device Id: 5 000039 393d02240
Firmware Version: GS002D
User Capacity: 500,107,862,016 bytes [500 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 5400 rpm
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS (minor revision not indicated)
SATA Version is: SATA 2.6, 3.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Wed Dec 2 16:25:07 2015 IST
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: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 25) The self-test routine was aborted by
the host.
Total time to complete Offline
data collection: ( 120) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 168) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 128
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 100 100 050 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 100 100 001 Pre-fail Always - 2012
5 Reallocated_Sector_Ct 0x0033 100 100 050 Pre-fail Always - 136
9 Power_On_Minutes 0x0032 058 058 000 Old_age Always - 17088h+03m
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 3396
191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 4580
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 166
193 Load_Cycle_Count 0x0032 092 092 000 Old_age Always - 81673
194 Temperature_Celsius 0x0022 100 100 000 Old_age Always - 48 (Min/Max 15/61)
199 UDMA_CRC_Error_Count 0x0032 100 100 000 Old_age Always - 195210357
200 Multi_Zone_Error_Rate 0x0032 100 100 000 Old_age Always - 587019845
240 Head_Flying_Hours 0x0032 070 070 000 Old_age Always - 724753
241 Total_LBAs_Written 0x0032 100 100 000 Old_age Always - 39961001311
242 Total_LBAs_Read 0x0032 100 100 000 Old_age Always - 44507460961
254 Free_Fall_Sensor 0x0032 100 100 000 Old_age Always - 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 Short offline Aborted by host 90% 17088 -
# 2 Extended offline Aborted by host 90% 17088 -
# 3 Short offline Completed without error 00% 1330 -
# 4 Short offline Completed without error 00% 1274 -
# 5 Short offline Completed without error 00% 1264 -
# 6 Short offline Completed without error 00% 946 -
# 7 Short offline Completed without error 00% 899 -
# 8 Short offline Completed without error 00% 252 -
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.
hdparm 输出
ka@KA-Inspiron-N5010:~$ sudo hdparm -Tt /dev/sda6
/dev/sda6:
Timing cached reads: 1140 MB in 2.00 seconds = 569.92 MB/sec
Timing buffered disk reads: 2 MB in 5.80 seconds = 353.24 kB/sec
答案1
请立即停止使用该磁盘并：
- 购买比现有磁盘更大、更快的新磁盘
dd使用或将旧磁盘的完整磁盘到磁盘映像复制到新磁盘克隆Zilla- 从你的机器上移除几乎损坏的磁盘
- 添加刚刚创建的克隆
- 如果你购买了更大的磁盘：
- 对您的工作系统进行全新的完整备份。
为什么？
以下所有参数：
1 Raw_Read_Error_Rate 0x000b 100 100 050 Pre-fail Always - 0
3 Spin_Up_Time 0x0027 100 100 001 Pre-fail Always - 2012
5 Reallocated_Sector_Ct 0x0033 100 100 050 Pre-fail Always - 136
在预先失败，这意味着在不久的将来，你将真实的像硬盘崩溃这样的麻烦。
更多信息请阅读：HDD 的死亡就像癌症一样缓慢而痛苦和1 台 PC 的最佳备份策略是什么。