Hi

I've noticed since I've switched to slackware...my external hdd is very slow at reading. It practically took 30 minutes just to read all of my mp3's in amarok (to build a database)...and now I'm scanning my files on nicotine and it's taking a very long time. It was never this slow before.

Any suggestions?

-RoaCh

If you still have the box or the manual check the RPM speed, if it's below 7000 rpm then that will make it slower. What filesystem are you using? ext2 is slower, I think than something like ReiserFS or ext3.

I'm using ReiserFS...and have no idea where the manual is .

It's a 'wego' and it's usb 2.0.

edit : oh, i don't think it (=usb) will have a dma setting then ?

egag

Well..here is the output:

/dev/sda:
readonly = 0 (off)
readahead = 256 (on)
geometry = 14593/255/63, sectors = 234441648, start = 0


Doesn't say anything about DMA. I will look at the manpage though..and see.

If it doesn't say anything about DMA, does that mean it can't use it?

it's just used the way usb devices are used.
maybe check the kerneloutput when you plug it in.

type " tail -f /var/log/messages " in a console and plug the drive in.
maybe post the output here...

egag

Is the ehci-hcd module loaded ?
see with lsmod

Jun 29 12:05:28 darkstar kernel: usb 4-2: USB disconnect, address 3
Jun 29 12:05:37 darkstar kernel: usb 4-2: new full speed USB device using uhci_hcd and address 6
Jun 29 12:05:38 darkstar kernel: usb 4-2: not running at top speed; connect to a high speed hub
Jun 29 12:05:38 darkstar kernel: scsi1 : SCSI emulation for USB Mass Storage devices
Jun 29 12:05:43 darkstar kernel: Vendor: WDC WD12 Model: 00BB-00GUA0 Rev: 0811
Jun 29 12:05:43 darkstar kernel: Type: Direct-Access ANSI SCSI revision: 00
Jun 29 12:05:43 darkstar kernel: SCSI device sdb: 234441648 512-byte hdwr sectors (120034 MB)
Jun 29 12:05:43 darkstar kernel: SCSI device sdb: 234441648 512-byte hdwr sectors (120034 MB)
Jun 29 12:05:43 darkstar kernel: sdb: sdb2
Jun 29 12:05:43 darkstar kernel: Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0
Jun 29 12:06:12 darkstar kernel: : rejecting I/O to dead device

Well, I typed that...and it wasn't in the list...so I modprobed it. Checked again and it still wasn't listed by lsmod

Try dmesg just after you modprobe the module or tail /var/log/syslog
there is surelly an explanation

Hmm..one thought. Recently..I installed ubuntu..and for the first time kept getting the error

"hub 1-0:1.0: over-current change on port 2
hub 1-0:1.0: over-current change on port 2
hub 1-0:1.0: over-current change on port 2
"

Flood in virtual consoles. I switched to slack...and still get the message..like if I type dmesg. I also get it when restarting or shutting down. Could this have something to do with it?

Have you a laptop ?
How many USB port are physically present ?
What is the output with :
/sbin/lspci -v | grep -i usb

...and did you try other usb ports..?

egag

root@darkstar:/home/ravencrow# /sbin/lspci -v | grep -i usb
00:1f.2 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #1) (rev 04) (prog-if 00 [UHCI])
00:1f.4 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #2) (rev 04) (prog-if 00 [UHCI])
02:07.0 USB Controller: NEC Corporation USB (rev 41) (prog-if 10 [OHCI])
02:07.1 USB Controller: NEC Corporation USB (rev 41) (prog-if 10 [OHCI])
02:07.2 USB Controller: NEC Corporation USB 2.0 (rev 02) (prog-if 20 [EHCI])


Hope that helps.

I have one USB card in the back that has 4 plugs (one is broken). Then another in the back with 2..that I'm guessing are 1.0. Then I have 2 in the front as well.


Actually, I did awhile ago. I had my hddrive plugged into a 1.0 port I think! Go figure..I should have checked that first. The performance is better now.

However, that error...does that make a difference? Also...that module that isn't being loaded...is that also a problem?

That would explain the log message 'hub 1-0:1.0: over-current change on port 2'
it means that the (maximum) voltage has changed, this is detected by the usb chipset
built to provide electricity for all your USB port.

ehci-hcd is the USB 2.0 linux driver