Slow USB

[ka9qlq]

I got a new 2 TB Fantom FDD2000U and transfers creep. 10Mibs.....Ideas? The 3 y/o 1 TB works fine.

[ka9qlq]

Anyone?

[james147]

Is it any faster on another computer and is it the read or write speed that is slow?

[dibl]

USB file transfers have been an off - and - on again issue for some time: https://bugs.launchpad.net/ubuntu/+s...ux/+bug/500069

Also, what filesystem(s) are on the external drives? On Ubuntu forums you can find many "slow USB" threads, and one thing that seems to make them slow is going from ext3/4 on the computer to NTFS on the external drive.

Also, here's a thread for 10.04: http://ubuntuforums.org/showthread.php?t=1963360

[ka9qlq]

Sorry for the slow reply I'll check the links More info..
I formatted 1 primary ext4 1 primary fat 32 and the system intermittently didn't see the drive.
I formatted 2 primary ext3 1 primary fat 32 and it is s l o w!!!!!!!!
I gave it to a friend with Windows he transferred some files took 5 minutes.
He reformatted the fat 32 partition to NTFS took half a minute.
I get this on my 2 year old 1TB Fantom 1 primary ext3 1 primary fat 32
/dev/sdc1: Timing cached reads: 2088 MB in 2.00 seconds = 1044.27 MB/sec Timing buffered disk reads: 74 MB in 3.03 seconds = 24.42 MB/sec
/dev/sdc2: Timing cached reads: 2116 MB in 2.00 seconds = 1058.28 MB/sec Timing buffered disk reads: 82 MB in 3.00 seconds = 27.29 MB/sec
I am puzzled. I'll post the output of the 2TB when I get it back but I've NEVER had a speed issue with the 1TB. My internal /home partition
/dev/sda3: Timing cached reads: 2072 MB in 2.00 seconds = 1036.70 MB/sec Timing buffered disk reads: 228 MB in 3.01 seconds = 75.69 MB/sec
I'll post the output on the new drive when I get it back
Thanks

[SteveRiley]

Partition names aren't too helpful here. Can you tell us the manufacturers and models of the drives? Also, cached reads are pretty much useless, as they essentially time how fast your CPU, memory, and controller cache are. Buffered reads are a better indicator of drive read speeds. And you mention USB. Are you sure you're using a USB 2.0 port? Have you tried a USB 3.0 port, if you have one?

[ka9qlq]

It's a Fantom FDD200U but I can't find much about the guts. #1 thing to remember my old Fantom usb drive is much faster. How do I get buffered reads?

[james147]

Timing buffered disk reads: 74 MB in 3.03 seconds = 24.42 MB/sec
Timing buffered disk reads: 82 MB in 3.00 seconds = 27.29 MB/sec

These sound about right for a usb2 device (or usb3 connected to a usb2 port) I get about the same for my usb3 devices when connected to a usb2 port. Never seen a speed greater then this on usb2 device.

Timing buffered disk reads: 228 MB in 3.01 seconds = 75.69 MB/sec

That is about what I get on my internal drives.

[SteveRiley]

How do I get buffered reads?

Running hdparm with the -t parameter provides the buffered reads.

Also, note that the filesystem can influence performance. The SSD in my laptop has four partitions:

steve@x1:~$ [B]sudo gdisk -l /dev/sda[/B]

Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 250069680 sectors, 119.2 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): C803B5C9-5912-4046-9F23-E39B626CEEFC
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 250069646
Partitions will be aligned on 8-sector boundaries
Total free space is 13 sectors (6.5 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1              40         1048615   512.0 MiB   EF00  
   2         1048616        63963175   30.0 GiB    8300  
   3        63963176       231735335   80.0 GiB    8300  
   4       231735336       250069639   8.7 GiB     8200

#1 is FAT32 for the UEFI boot loader; #2 and #3 are EXT4; #4 is swap. Here are my buffered read timings:

steve@x1:~$ [B]sudo hdparm -t /dev/sda1[/B]
/dev/sda1:
 Timing buffered disk reads: 134 MB in  3.02 seconds =  44.44 MB/sec

steve@x1:~$ [B]sudo hdparm -t /dev/sda2[/B]
/dev/sda2:
 Timing buffered disk reads: 230 MB in  3.00 seconds =  76.57 MB/sec

steve@x1:~$ [B]sudo hdparm -t /dev/sda3[/B]
/dev/sda3:
 Timing buffered disk reads: 228 MB in  3.02 seconds =  75.52 MB/sec

steve@x1:~$ [B]sudo hdparm -t /dev/sda4[/B]
/dev/sda4:
 Timing buffered disk reads: 230 MB in  3.02 seconds =  76.10 MB/sec

It ought to be faster, but alas, the one item that Lenovo seems to have gone cheap on the X1 is the SATA controller.

[ka9qlq]

Sorry it took so long
I transferred a 700 MB ISO file from the internal HD to the old 1 GB USB HD and to the new 2 GB USB HD
The new drive took almost an hour moving over and 30 minutes moving back!!!!!!!
The old disk les then 5 minutes moving over

[ka9qlq]

Nobody?

[SteveRiley]

Nobody?

We need more specificity from you to help. If I may, I'd ask you to take a look at what you wrote earlier:

I formatted 1 primary ext4 1 primary fat 32 and the system intermittently didn't see the drive.
I formatted 2 primary ext3 1 primary fat 32 and it is s l o w!!!!!!!!
I gave it to a friend with Windows he transferred some files took 5 minutes.
He reformatted the fat 32 partition to NTFS took half a minute.
I get this on my 2 year old 1TB Fantom 1 primary ext3 1 primary fat 32
/dev/sdc1: Timing cached reads: 2088 MB in 2.00 seconds = 1044.27 MB/sec Timing buffered disk reads: 74 MB in 3.03 seconds = 24.42 MB/sec
/dev/sdc2: Timing cached reads: 2116 MB in 2.00 seconds = 1058.28 MB/sec Timing buffered disk reads: 82 MB in 3.00 seconds = 27.29 MB/sec
I am puzzled. I'll post the output of the 2TB when I get it back but I've NEVER had a speed issue with the 1TB. My internal /home partition
/dev/sda3: Timing cached reads: 2072 MB in 2.00 seconds = 1036.70 MB/sec Timing buffered disk reads: 228 MB in 3.01 seconds = 75.69 MB/sec

The first two lines are very difficult to decipher. It's unclear what you're referring to: are you writing about different partitions on different drives, different partitions on the same drive, or different drives? A few sentences later you indicate device names, but there's nothing in your post that tells us which drive is which device.

If you can be more specific about what you've tried with each drive (mention the brand and model), what kinds and sizes of partitions you've created, and whether you're using USB2 or USB3 ports, that will help us immensely.

[ka9qlq]

Sorry I got in to it with my ISP but I'm back

New USB drive
I formatted 1 primary ext4 1 primary fat 32 and the system intermittently didn't see the drive.
New USB drive
I formatted 2 primary ext3 1 primary fat 32 and it is s l o w!!!!!!!!
I gave it to a friend with Windows he transferred some files took 5 minutes.
He reformatted the fat 32 partition to NTFS took half a minute.
I get this on my 2 year old 1TB Fantom 1 primary ext3 1 primary fat 32
/dev/sdc1: Timing cached reads: 2088 MB in 2.00 seconds = 1044.27 MB/sec Timing buffered disk reads: 74 MB in 3.03 seconds = 24.42 MB/sec
/dev/sdc2: Timing cached reads: 2116 MB in 2.00 seconds = 1058.28 MB/sec Timing buffered disk reads: 82 MB in 3.00 seconds = 27.29 MB/sec
I am puzzled. I'll post the output of the 2TB when I get it back but I've NEVER had a speed issue with the 1TB. My internal /home partition
Internal drive
/dev/sda3: Timing cached reads: 2072 MB in 2.00 seconds = 1036.70 MB/sec Timing buffered disk reads: 228 MB in 3.01 seconds = 75.69 MB/sec

I only know they're Fantom I don't know what's in the box but the old drive has an esata port the new drive doesn't. I did get ext4 going on the new drive, still takes 2 hours to transfer an ISO from the internal drive that the old drove takes 5 minutes.

[verndog]

ka9qlq,

What's the output of,

dmesg | grep USB

,with the new usb hard drive plugged in.

[ka9qlq]

alvin@dittohead:~$ dmesg | grep USB
[ 0.414519] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.414678] ehci_hcd 0000:00:12.2: new USB bus registered, assigned bus number 1
[ 0.414739] ehci_hcd 0000:00:12.2: applying AMD SB600/SB700 USB freeze workaround
[ 0.424203] ehci_hcd 0000:00:12.2: USB 2.0 started, EHCI 1.00
[ 0.424396] hub 1-0:1.0: USB hub found
[ 0.424654] ehci_hcd 0000:00:13.2: new USB bus registered, assigned bus number 2
[ 0.424714] ehci_hcd 0000:00:13.2: applying AMD SB600/SB700 USB freeze workaround
[ 0.436140] ehci_hcd 0000:00:13.2: USB 2.0 started, EHCI 1.00
[ 0.436334] hub 2-0:1.0: USB hub found
[ 0.436467] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.436635] ohci_hcd 0000:00:12.0: new USB bus registered, assigned bus number 3
[ 0.494254] hub 3-0:1.0: USB hub found
[ 0.494495] ohci_hcd 0000:00:12.1: new USB bus registered, assigned bus number 4
[ 0.554497] hub 4-0:1.0: USB hub found
[ 0.554742] ohci_hcd 0000:00:13.0: new USB bus registered, assigned bus number 5
[ 0.610108] hub 5-0:1.0: USB hub found
[ 0.610320] ohci_hcd 0000:00:13.1: new USB bus registered, assigned bus number 6
[ 0.666106] hub 6-0:1.0: USB hub found
[ 0.666318] ohci_hcd 0000:00:14.5: new USB bus registered, assigned bus number 7
[ 0.722100] hub 7-0:1.0: USB hub found
[ 0.722218] uhci_hcd: USB Universal Host Controller Interface driver
[ 0.736024] usb 1-2: new high speed USB device using ehci_hcd and address 2
[ 0.869795] hub 1-2:1.0: USB hub found
[ 1.204017] usb 2-2: new high speed USB device using ehci_hcd and address 2
[ 1.362413] Initializing USB Mass Storage driver...
[ 1.362598] scsi6 : SCSI emulation for USB Mass Storage devices
[ 1.362754] USB Mass Storage support registered.
[ 1.620021] usb 4-3: new full speed USB device using ohci_hcd and address 2
[ 2.060023] usb 3-3: new full speed USB device using ohci_hcd and address 2
[ 2.304926] usb 1-2.1: new high speed USB device using ehci_hcd and address 5
[ 2.398041] hub 1-2.1:1.0: USB hub found
[ 2.468762] usb 1-2.2: new low speed USB device using ehci_hcd and address 6
[ 2.578569] generic-usb 0003:1267:0103.0001: input,hidraw0: USB HID v1.10 Keyboard [HID 1267:0103] on usb-0000:00:12.2-2.2/input0
[ 2.583733] generic-usb 0003:1267:0103.0002: input,hidraw1: USB HID v1.10 Device [HID 1267:0103] on usb-0000:00:12.2-2.2/input1
[ 2.584125] usbhid: v2.6:USB HID core driver
[ 2.637277] usb 1-2.3: new high speed USB device using ehci_hcd and address 7
[ 2.730276] scsi7 : SCSI emulation for USB Mass Storage devices
[ 2.800785] usb 1-2.5: new full speed USB device using ehci_hcd and address 8
[ 2.973171] usb 1-2.6: new full speed USB device using ehci_hcd and address 9
[ 3.136630] usb 1-2.1.3: new high speed USB device using ehci_hcd and address 10
[ 3.230754] scsi8 : SCSI emulation for USB Mass Storage devices
[ 3.300348] usb 1-2.1.4: new low speed USB device using ehci_hcd and address 11
[ 3.400038] generic-usb 0003:1C4F:0003.0003: input,hidraw2: USB HID v1.10 Mouse [SIGMACHIP Usb Mouse] on usb-0000:00:12.2-2.1.4/input0
[ 30.609568] usblp0: USB Bidirectional printer dev 2 if 1 alt 0 proto 2 vid 0x03F0 pid 0x3F11
[ 30.620840] USB Serial support registered for generic
[ 32.509184] usbserial: USB Serial Driver core
[ 32.511224] USB Serial support registered for FTDI USB Serial Device
[ 32.511321] ftdi_sio 1-2.5:1.0: FTDI USB Serial Device converter detected
[ 32.511950] usb 1-2.5: FTDI USB Serial Device converter now attached to ttyUSB0
[ 32.511978] ftdi_sio: v1.5.0:USB FTDI Serial Converters Driver
[ 32.556934] USB Serial support registered for pl2303
[ 32.559072] usb 1-2.6: pl2303 converter now attached to ttyUSB1
[ 32.559095] pl2303: Prolific PL2303 USB to serial adaptor driver
[ 521.043616] usb 4-3: USB disconnect, address 2
[ 526.132037] usb 4-3: new full speed USB device using ohci_hcd and address 3
[ 526.317988] usblp0: USB Bidirectional printer dev 3 if 1 alt 0 proto 2 vid 0x03F0 pid 0x3F11
[ 527.632407] type=1503 audit(1339809664.493:18): operation="open" pid=3208 parent=3203 profile="/usr/sbin/cupsd" requested_mask="w::" denied_mask="w::" fsuid=0 ouid=0 name="/dev/ttyUSB0"
[ 527.632455] type=1503 audit(1339809664.493:19): operation="open" pid=3208 parent=3203 profile="/usr/sbin/cupsd" requested_mask="w::" denied_mask="w::" fsuid=0 ouid=0 name="/dev/ttyUSB1"
[ 571.618183] usb 4-3: USB disconnect, address 3
[323554.144200] usb 1-2.1.1: new high speed USB device using ehci_hcd and address 13
[323554.193202] hub 1-2.1:1.0: unable to enumerate USB device on port 1
[323554.400206] usb 1-2.1.1: new high speed USB device using ehci_hcd and address 14
[323554.416424] hub 1-2.1:1.0: unable to enumerate USB device on port 1
[323554.600370] hub 1-2.1:1.0: unable to enumerate USB device on port 1
[323554.860947] hub 1-2.1:1.0: unable to enumerate USB device on port 1
[323555.112396] hub 1-2.1:1.0: unable to enumerate USB device on port 1
[323555.424250] usb 1-2.1.1: new high speed USB device using ehci_hcd and address 18
[323555.944461] hub 1-2.1:1.0: unable to enumerate USB device on port 1
[323556.144678] usb 1-2.1.1: new high speed USB device using ehci_hcd and address 20
[323556.288442] hub 1-2.1:1.0: unable to enumerate USB device on port 1
[323556.492803] usb 1-2.1.1: new high speed USB device using ehci_hcd and address 22
[323556.585196] scsi9 : SCSI emulation for USB Mass Storage devices
[324899.467429] usb 1-2.1.1: USB disconnect, address 22