感觉硬盘老是读盘！

bluebear720

感觉硬盘老是读盘！ 没有打开程序时，有时也这样，用不iotop也没找到是哪个程序在读.所以怀疑硬盘设置问题：
日立 5400   8m  120G

# hdparm -i /dev/sda

/dev/sda:

Model=Hitachi HTS542512K9SA00, FwRev=BB2OC31P, SerialNo=
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=7229kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=234441648
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes:  pio0 pio1 pio2 pio3 pio4

# hdparm -Tt /dev/sda

/dev/sda:
Timing cached reads:   1630 MB in  2.00 seconds = 815.31 MB/sec
Timing buffered disk reads: 162 MB in  3.03 seconds =  53.40 MB/sec


写的性能我知道是没问题的，只读盘的性能，我看到的一些测试都在 1000m 以上，甚至有1800m 的，我的还不到他的 一半, 这是怎么回事。

loki

sudo hdparm -i /dev/sda

/dev/sda:

Model=ST3160815AS                             , FwRev=4.ADA   , SerialNo=            5RX7RRZV
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=?8?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=312500000
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes:  pio0 pio1 pio2 pio3 pio4
DMA modes:  mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

sudo hdparm -Tt /dev/sda

/dev/sda:
Timing cached reads:   2054 MB in  2.00 seconds = 1026.68 MB/sec
Timing buffered disk reads:  228 MB in  3.00 seconds =  75.91 MB/sec

trumpeterswan

# hdparm -Tt /dev/sda   

/dev/sda:
Timing cached reads:   2864 MB in  2.00 seconds = 1431.82 MB/sec
Timing buffered disk reads: 320 MB in  3.00 seconds = 106.49 MB/sec

# hdparm -i /dev/sda

/dev/sda:

Model=WDC WD1600AAJS-00B4A0, FwRev=01.03A01, SerialNo=WD-WMAT14213679
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=312579695
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes:  pio0 pio3 pio4
DMA modes:  mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

linuxier

一直以为我的硬盘很慢，没想比你们都快，

/dev/sda:
Timing cached reads:   3412 MB in  2.00 seconds = 1707.67 MB/sec
Timing buffered disk reads: 312 MB in  3.02 seconds = 103.39 MB/sec

delectate

/dev/sda:
Timing cached reads:   2572 MB in  2.00 seconds = 1287.05 MB/sec
Timing buffered disk reads: 210 MB in  3.01 seconds =  69.71 MB/sec

bluebear720

我.....
我的破硬盘！ 谁告诉我到底是怎么了！我的 “日立” 怎么这么差！！！

linuxier

不错了，我的是笔记本的 7200转/秒 的，有时也感觉卡。最近不是内核更新有增加硬盘 io 速度限制么，那样的话应该不会有狂读硬盘的问题了，

bluebear720

希望是这吧,不过 源里没有的话,我没有编译的欲望了!

看了一下自己的 Gnome , 发现很多读写盘 的地方, 一个就是打开文档的历史记录:
这个最恶心,关都关不掉! 用网上把它的文件改成 文件夹的方法, 结果 它就一直向.xsession-errors 里写记录了:
(nautilus:2710): Gtk-WARNING **: Attempting to store changes into `/home/XXX/.recently-used.xbel', but failed: 将文件“/home/XXX/.recently-used.xbel.FO6APV”重命名为“/home/XXX/.recently-used.xbel”失败：g_rename() 失败：是一个目录

对 Gnome 失望中, 正在找如何最小化安装一个 KDE , 换之.
考虑 GTK 是不是也换了, 开始QT的学习.
以前的一个个日日夜夜...
咳!!!!

superekcah

我现在有点怀疑hdparm测的真是准确的吗?

1. Durandal ~ $ sudo hdparm -tT /dev/sdb
2. /dev/sdb:
3. Timing cached reads:   17160 MB in  2.00 seconds = 8593.22 MB/sec
4. Timing buffered disk reads: 366 MB in  3.00 seconds = 121.93 MB/sec
5. Durandal ~ $ sudo hdparm -i /dev/sdb
6. /dev/sdb:
8. Model=ST31000528AS, FwRev=CC37, SerialNo=5VP11XCP
9. Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
10. RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
11. BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=off
12. CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
13. IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
14. PIO modes:  pio0 pio1 pio2 pio3 pio4
15. DMA modes:  mdma0 mdma1 mdma2
16. UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
17. AdvancedPM=no WriteCache=enabled
18. Drive conforms to: unknown:  ATA/ATAPI-4,5,6,7
20. * signifies the current active mode

复制代码

whatiwant

我觉得hdparm的测试不靠谱...

/dev/sda:
Timing cached reads:   15992 MB in  2.00 seconds = 8002.99 MB/sec
Timing buffered disk reads:  570 MB in  3.00 seconds = 189.84 MB/sec

/dev/sdb:
Timing cached reads:   16066 MB in  2.00 seconds = 8040.27 MB/sec
Timing buffered disk reads:  398 MB in  3.01 seconds = 132.15 MB/sec