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i was trying to search through my old posts, im sure i asked this before and got a solution, something about configuring hal or something. can't find what im looking for in the wiki though. but im on a clean install now, so i need to fix this problem again
basically, im trying to transfer 7.2 gb of stuff to a flash drive, and its transferring at a whopping 400kbps or so on average, i should be able to see 10mbps
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Uhm, though none of these are HAL-related, I'd check these:
a) run 'dmesg' in a terminal after you insert the drive. What modules are used? Post the output.
b) run 'lsmod | grep -i usb' in a terminal. Is the ehci_hcd module present?
c) what are your kernel boot params? If you've got stuff like noapic, irqpoll, etc. this could be a possible cause.
And AFAIK, possibly unless you've done some special configuration for this particular drive, HAL cannot be responsible for slow transfer speeds - other may correct me if I'm wrong?
Last edited by chochem (2008-09-24 23:55:01)
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heres the dmesg output
usb 2-5: USB disconnect, address 8
ata4: EH complete
ata4: EH complete
usb 2-5: new high speed USB device using ehci_hcd and address 9
usb 2-5: configuration #1 chosen from 1 choice
scsi12 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 9
usb-storage: waiting for device to settle before scanning
ata4: EH complete
ata4: EH complete
ata4: EH complete
scsi 12:0:0:0: Direct-Access OCZ RALLY2 1100 PQ: 0 ANSI: 0 CCS
sd 12:0:0:0: [sdh] 31326208 512-byte hardware sectors (16039 MB)
sd 12:0:0:0: [sdh] Write Protect is off
sd 12:0:0:0: [sdh] Mode Sense: 43 00 00 00
sd 12:0:0:0: [sdh] Assuming drive cache: write through
sd 12:0:0:0: [sdh] 31326208 512-byte hardware sectors (16039 MB)
sd 12:0:0:0: [sdh] Write Protect is off
sd 12:0:0:0: [sdh] Mode Sense: 43 00 00 00
sd 12:0:0:0: [sdh] Assuming drive cache: write through
sdh: sdh1
sd 12:0:0:0: [sdh] Attached SCSI removable disk
sd 12:0:0:0: Attached scsi generic sg9 type 0
usb-storage: device scan complete
heres teh output for the other command
[urmom@urmom-pc ~]$ lsmod | grep -i usb
usbhid 51680 0
hid 49088 2 hidp,usbhid
ff_memless 7816 1 usbhid
hci_usb 17820 3
bluetooth 56868 9 bnep,rfcomm,hidp,l2cap,hci_usb
usb_storage 103872 0
usbcore 154520 6 usbhid,hci_usb,usb_storage,ehci_hcd,ohci_hcd
scsi_mod 112504 5 usb_storage,sg,sd_mod,sr_mod,libata
how do i check kernel boot paramaters?
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basically, im trying to transfer 7.2 gb of stuff to a flash drive, and its transferring at a whopping 400kbps or so on average, i should be able to see 10mbps
USB transfer rates are from 1.5 MBit/s (187Kb/s) up to 12 Mbit/s (1.5 Mb/s). But your mileage may vary a lot, because if the flash drive is slow on write, USB controller will await the device be ready to receive more data, and then the average transfer rate drops.
E.g., I have a Sony-Ericsson cellphone that can be mounted as a generic volume via USB. It connects as USB 2.0, as I'm able to use in modem mode with high speeds. For writing, thought, it uses a slow MicroSD flash, so when I copy files the transfer rate is about 150Kb/s.
So, I wouldn't bet forehand it is a configuration issue with your kernel. Also, HAL doesn't come into play - it plays no role on the way device is acessed, it only detects devices and notifies the kernel and the DBus system bus.
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