[gentoo-user] /dev/hdb performance really sucks ...

[gentoo-user] /dev/hdb performance really sucks ...

[Richard Watson]

Hi - I'm getting vastly different performance results on hda (master) as
opposed to hdb (slave). Basically when my root partition mounts (/dev/hdb)
I'm warned that DMA is off, yet hdparm -i shows udma as active. Basically
/dev/hdb performance sucks ... I've bought both drives in the last few
months. The motherboard is quite old (3 years .. I think).

Any suggestions would be appreciated. 
--
Thanks - Richard

=============================

/dev/hda:
 Timing cached reads:   1360 MB in  2.00 seconds = 678.75 MB/sec
 Timing buffered disk reads:  146 MB in  3.03 seconds =  48.22 MB/sec

/dev/hdb:
 Timing cached reads:   1376 MB in  2.00 seconds = 687.42 MB/sec
 Timing buffered disk reads:   10 MB in  3.51 seconds =   2.85 MB/sec

/dev/hda:

 Model=Maxtor 6Y120P0, FwRev=YAR41BW0, SerialNo=Y36DHLVE
 Config={ Fixed }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
 BuffType=DualPortCache, BuffSize=7936kB, MaxMultSect=16, MultSect=16
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=240121728
 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=yes: disabled (255) WriteCache=enabled
 Drive conforms to: (null): 

 * signifies the current active mode


/dev/hdb:

 Model=ST3200826A, FwRev=3.03, SerialNo=5ND0CVYX
 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=16
 CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=268435455
 IORDY=on/off, tPIO={min:240,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 
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: device does not report version: 

 * signifies the current active mode


-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.338 / Virus Database: 267.9.4/57 - Release Date: 22/07/2005
 

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] /dev/hdb performance really sucks ...

[Tomas Bohata]

Richard Watson napsal(a):
> Hi - I'm getting vastly different performance results on hda (master) as
> opposed to hdb (slave). Basically when my root partition mounts (/dev/hdb)
> I'm warned that DMA is off, yet hdparm -i shows udma as active. Basically
> /dev/hdb performance sucks ... I've bought both drives in the last few
> months. The motherboard is quite old (3 years .. I think).
> 
> Any suggestions would be appreciated. 
> --
> Thanks - Richard
> 
> =============================
> 
> /dev/hda:
>  Timing cached reads:   1360 MB in  2.00 seconds = 678.75 MB/sec
>  Timing buffered disk reads:  146 MB in  3.03 seconds =  48.22 MB/sec
> 
> /dev/hdb:
>  Timing cached reads:   1376 MB in  2.00 seconds = 687.42 MB/sec
>  Timing buffered disk reads:   10 MB in  3.51 seconds =   2.85 MB/sec
> 
> /dev/hda:
> 
>  Model=Maxtor 6Y120P0, FwRev=YAR41BW0, SerialNo=Y36DHLVE
>  Config={ Fixed }
>  RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
>  BuffType=DualPortCache, BuffSize=7936kB, MaxMultSect=16, MultSect=16
>  CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=240121728
>  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=yes: disabled (255) WriteCache=enabled
>  Drive conforms to: (null): 
> 
>  * signifies the current active mode
> 
> 
> /dev/hdb:
> 
>  Model=ST3200826A, FwRev=3.03, SerialNo=5ND0CVYX
>  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=16
>  CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=268435455
>  IORDY=on/off, tPIO={min:240,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 
>  AdvancedPM=no WriteCache=enabled
>  Drive conforms to: device does not report version: 
> 
>  * signifies the current active mode
> 
> 

maybe they dont like each other, try to plug second hd to another 
controller (hdc/hdd)

T.B.

-- 
gentoo-user@gentoo.org mailing list

[gentoo-user] Re: /dev/hdb performance really sucks ...

[James]

Richard Watson <waty <at> bigpond.net.au> writes:


> Hi - I'm getting vastly different performance results on hda (master) as
> opposed to hdb (slave). 
> Any suggestions would be appreciated. 

I'd make sure you read the man page on hdparm. Certain actions can kill hardware,
permanently. 

That said, what I do is set the hdparms in /etc/conf.d/hdparm. I believe you
can test each drive, note the best (safe) parameters to adjust. Test the
adjustments, and then make an entry, per hard drive in the
/etc/conf.d/hdparm. Here's what works for me on one system:

all_args="-d1"
hda_args="-d1 -u1 -c1 -a256"


Remember, any device that is seen as a /dev/hd* will be affected by 
settings like [all_args="-d1"]......

If get lesser performance when (2) different drives are on the same
(ide/ata/eide) controller, then try a second pci cotroller card.
or if both are on the same cable, and the MB or controller has a 
second port, add a second cable and move one drive to the other 
port/cable. This sort of performance degradation should effect both drives. 

HTH

James

-- 
gentoo-user@gentoo.org mailing list

[gentoo-user] Re: /dev/hdb performance really sucks ...

[James]

Richard Watson <waty <at> bigpond.net.au> writes:

> 
> Hi - I'm getting vastly different performance results on hda (master) as
> opposed to hdb (slave). 

One more point. The drive tests via hdparm may not be conclusive.
A variety of I/O (drive) benchmark performance tests may be needed.  
In portage there are other tools/tests to benchmark I/O (drive) performance:

bonnie
bonnie++

Other benchmark/diagnostic tools may exist for I/O  drive testing.

HTH,

James

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] /dev/hdb performance really sucks ...

[Richard Fish]

Richard Watson wrote:

>Hi - I'm getting vastly different performance results on hda (master) as
>opposed to hdb (slave). Basically when my root partition mounts (/dev/hdb)
>I'm warned that DMA is off, yet hdparm -i shows udma as active. Basically
>/dev/hdb performance sucks ... I've bought both drives in the last few
>months. The motherboard is quite old (3 years .. I think).
>
>Any suggestions would be appreciated. 
>  
>

Maybe double check the jumpers on both drives... the first one should be 
"master w/slave" if that option is available.

-Richard (um, Fish that is)

-- 
gentoo-user@gentoo.org mailing list