Gentoo Archives: gentoo-user

From: Richard Watson <waty@×××××××××××.au>
To: gentoo-user@l.g.o
Subject: [gentoo-user] /dev/hdb performance really sucks ...
Date: Mon, 25 Jul 2005 08:32:17
Message-Id: 000001c590f2$b96fe290$0400a8c0@ECRM
1 Hi - I'm getting vastly different performance results on hda (master) as
2 opposed to hdb (slave). Basically when my root partition mounts (/dev/hdb)
3 I'm warned that DMA is off, yet hdparm -i shows udma as active. Basically
4 /dev/hdb performance sucks ... I've bought both drives in the last few
5 months. The motherboard is quite old (3 years .. I think).
6
7 Any suggestions would be appreciated.
8 --
9 Thanks - Richard
10
11 =============================
12
13 /dev/hda:
14 Timing cached reads: 1360 MB in 2.00 seconds = 678.75 MB/sec
15 Timing buffered disk reads: 146 MB in 3.03 seconds = 48.22 MB/sec
16
17 /dev/hdb:
18 Timing cached reads: 1376 MB in 2.00 seconds = 687.42 MB/sec
19 Timing buffered disk reads: 10 MB in 3.51 seconds = 2.85 MB/sec
20
21 /dev/hda:
22
23 Model=Maxtor 6Y120P0, FwRev=YAR41BW0, SerialNo=Y36DHLVE
24 Config={ Fixed }
25 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
26 BuffType=DualPortCache, BuffSize=7936kB, MaxMultSect=16, MultSect=16
27 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=240121728
28 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
29 PIO modes: pio0 pio1 pio2 pio3 pio4
30 DMA modes: mdma0 mdma1 mdma2
31 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma6
32 AdvancedPM=yes: disabled (255) WriteCache=enabled
33 Drive conforms to: (null):
34
35 * signifies the current active mode
36
37
38 /dev/hdb:
39
40 Model=ST3200826A, FwRev=3.03, SerialNo=5ND0CVYX
41 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
42 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
43 BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=16
44 CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=268435455
45 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
46 PIO modes: pio0 pio1 pio2 pio3 pio4
47 DMA modes: mdma0 mdma1 mdma2
48 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
49 AdvancedPM=no WriteCache=enabled
50 Drive conforms to: device does not report version:
51
52 * signifies the current active mode
53
54
55 --
56 No virus found in this outgoing message.
57 Checked by AVG Anti-Virus.
58 Version: 7.0.338 / Virus Database: 267.9.4/57 - Release Date: 22/07/2005
59
60
61 --
62 gentoo-user@g.o mailing list

Replies

Subject Author
Re: [gentoo-user] /dev/hdb performance really sucks ... Tomas Bohata <gentoo@××××.cz>
[gentoo-user] Re: /dev/hdb performance really sucks ... James <wireless@×××××××××××.com>
[gentoo-user] Re: /dev/hdb performance really sucks ... James <wireless@×××××××××××.com>
Re: [gentoo-user] /dev/hdb performance really sucks ... Richard Fish <bigfish@××××××××××.org>