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dmz

Member

From: Sweden

Registered: 2008-08-27

Posts: 881

Website

Extremely slow performance with NEW hdd

Ok guys, this is pretty frustrating. Today I bought 2 new external hdd's, same manufacturer, same model. One of them seems to work great, but the other one.. well  look at this:

/dev/sdk1:
 Timing buffered disk reads:   96 MB in  3.04 seconds =  31.53 MB/sec
bash-3.2# hdparm -t /dev/sdj1

/dev/sdj1:
 Timing buffered disk reads:    4 MB in  4.30 seconds = 951.52 kB/sec

As you can see, my sdj is extremely slow - what could possibly be wrong here?

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fukawi2

Ex-Administratorino

From: .vic.au

Registered: 2007-09-28

Posts: 6,224

Website

Re: Extremely slow performance with NEW hdd

Is DMA enabled in the BIOS?

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dmz

Member

From: Sweden

Registered: 2008-08-27

Posts: 881

Website

Re: Extremely slow performance with NEW hdd

Is DMA enabled in the BIOS?

Probably - If it wasn't the other drive shouldnt behave like normal.

By the way:

bash-3.2# dmesg | grep -i ata.*dma
ata1: SATA max UDMA/133 abar m1024@0xfe02f000 port 0xfe02f100 irq 22
ata2: SATA max UDMA/133 abar m1024@0xfe02f000 port 0xfe02f180 irq 22
ata3: SATA max UDMA/133 abar m1024@0xfe02f000 port 0xfe02f200 irq 22
ata4: SATA max UDMA/133 abar m1024@0xfe02f000 port 0xfe02f280 irq 22
ata1.00: ATA-8: SAMSUNG HD501LJ, CR100-11, max UDMA7
ata1.00: configured for UDMA/133
ata2.00: ATA-7: ST3320820AS, 3.AAD, max UDMA/133
ata2.00: configured for UDMA/133
ata3.00: ATA-8: SAMSUNG HD501LJ, CR100-12, max UDMA7
ata3.00: configured for UDMA/133
bash-3.2#

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ls++ | LS_COLORS project | file management in vim | tons of utilities | configs | japh.se

lilsirecho

Veteran

Registered: 2003-10-24

Posts: 5,000

Re: Extremely slow performance with NEW hdd

Interchange the two drives and see what occurs!!

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dmz

Member

From: Sweden

Registered: 2008-08-27

Posts: 881

Website

Re: Extremely slow performance with NEW hdd

Ok.. I rebooted.. and now it seems fine.. I'm still curious what was going on though...

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ls++ | LS_COLORS project | file management in vim | tons of utilities | configs | japh.se

Evanlec

Member

From: NH, USA

Registered: 2007-12-16

Posts: 141

Website

Re: Extremely slow performance with NEW hdd

i might venture to ask how the drives are connected.. u said they were external so... USB? make sure you're using a usb 2.0 port

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dmz

Member

From: Sweden

Registered: 2008-08-27

Posts: 881

Website

Re: Extremely slow performance with NEW hdd

i might venture to ask how the drives are connected.. u said they were external so... USB? make sure you're using a usb 2.0 port

Yep, USB 2.0.

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ls++ | LS_COLORS project | file management in vim | tons of utilities | configs | japh.se