auvinen
March 11th, 2010, 01:34 PM
After it took me 11 hours to tar 15gb of data on my USB disk, I decided to try to figure out what is the bottleneck. I am not very knowledgeable in file systems, USB HDs, etc... So I decided to try and ask here.
Here's the deal:
- The machine I use has only USB 1.1. I use a USB HDD enclosure for back-up.
- I used to back up things onto a 40gb Seagate ST340810A. 14gb tarred in 3h.
- Changed the disk to a 80gb one by WD and tar of 15gb took over 11 hours.
Now a thing came to my mind: maybe 'time' is slowing things down? I used time to calculate the 11h... So the command was something like 'time tar blabla..."
Below is some info about the disks.
Old disk (ST340810A) info
Capacity: 40.8 GB
Speed: 5400 rpm
Average Read Time: 8.9 ms
Cylinders: 1023
Heads: 256
Sectors: 63
New disk ( Barracuda 7200.7 ST380011A) info
Capacity: 80.0gb
Speed: 7200rpm
Average Read Time: 8.5ms
Cylinders: 1023
Heads: 256
Sectors: 63
Bonnie++ benchmark results on the 80gb drive:
Version 1.03c ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
fancy 360M 386 3 386 0 153 0 235 0 254 0 5.3 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 471 93 +++++ +++ +++++ +++ 734 99 +++++ +++ 2633 99
'hwinfo' about the new 80gb disk:
37: SCSI 200.0: 10600 Disk
[Created at block.243]
UDI: /org/freedesktop/Hal/devices/storage_serial_ST_ST380011A_0000000000000062W_0_0
Unique ID: cLrx.yBL3HJZEQBA
Parent ID: sRsQ.M6dR1NkQHEE
SysFS ID: /class/block/sdb
SysFS BusID: 2:0:0:0
SysFS Device Link: /devices/pci0000:00/0000:00:04.2/usb1/1-2/1-2:1.0/host2/target2:0:0/2:0:0:0
Hardware Class: disk
Model: "ST380011A"
Vendor: usb 0x13fd "ST"
Device: usb 0x1040 "ST380011A"
Revision: "1.06"
Serial ID: "0000000000000062W"
Driver: "usb-storage", "sd"
Driver Modules: "usb_storage"
Device File: /dev/sdb (/dev/sg1)
Device Number: block 8:16-8:31 (char 21:1)
Features: Hotpluggable
Geometry (Logical): CHS 9729/255/63
Size: 156301488 sectors a 512 bytes
Speed: 12 Mbps
Module Alias: "usb:v13FDp1040d0106dc00dsc00dp00ic08isc06ip50"
Driver Info #0:
Driver Status: usb_storage is active
Driver Activation Cmd: "modprobe usb_storage"
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #17 (USB Controller)
hwinfo about the USB controller:
17: PCI 04.2: 0c03 USB Controller (UHCI)
[Created at pci.314]
UDI: /org/freedesktop/Hal/devices/pci_1106_3038
Unique ID: sRsQ.M6dR1NkQHEE
SysFS ID: /devices/pci0000:00/0000:00:04.2
SysFS BusID: 0000:00:04.2
Hardware Class: usb controller
Model: "VIA VT82xxxxx UHCI USB 1.1 Controller"
Vendor: pci 0x1106 "VIA Technologies, Inc."
Device: pci 0x3038 "VT82xxxxx UHCI USB 1.1 Controller"
SubVendor: pci 0x0925 "First International Computer, Inc."
SubDevice: pci 0x1234 "VA-502 Mainboard"
Revision: 0x10
Driver: "uhci_hcd"
Driver Modules: "uhci_hcd"
I/O Ports: 0xb400-0xb41f (rw)
IRQ: 6 (200000 events)
Module Alias: "pci:v00001106d00003038sv00000925sd00001234bc0Csc03 i00"
Driver Info #0:
Driver Status: uhci-hcd is not active
Driver Activation Cmd: "modprobe uhci-hcd"
Config Status: cfg=new, avail=yes, need=no, active=unknown
I will post the bonnie++ benchmark of the old drive soon. In the meantime, does anyone have a clue what could be causing this?
Here's the deal:
- The machine I use has only USB 1.1. I use a USB HDD enclosure for back-up.
- I used to back up things onto a 40gb Seagate ST340810A. 14gb tarred in 3h.
- Changed the disk to a 80gb one by WD and tar of 15gb took over 11 hours.
Now a thing came to my mind: maybe 'time' is slowing things down? I used time to calculate the 11h... So the command was something like 'time tar blabla..."
Below is some info about the disks.
Old disk (ST340810A) info
Capacity: 40.8 GB
Speed: 5400 rpm
Average Read Time: 8.9 ms
Cylinders: 1023
Heads: 256
Sectors: 63
New disk ( Barracuda 7200.7 ST380011A) info
Capacity: 80.0gb
Speed: 7200rpm
Average Read Time: 8.5ms
Cylinders: 1023
Heads: 256
Sectors: 63
Bonnie++ benchmark results on the 80gb drive:
Version 1.03c ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
fancy 360M 386 3 386 0 153 0 235 0 254 0 5.3 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 471 93 +++++ +++ +++++ +++ 734 99 +++++ +++ 2633 99
'hwinfo' about the new 80gb disk:
37: SCSI 200.0: 10600 Disk
[Created at block.243]
UDI: /org/freedesktop/Hal/devices/storage_serial_ST_ST380011A_0000000000000062W_0_0
Unique ID: cLrx.yBL3HJZEQBA
Parent ID: sRsQ.M6dR1NkQHEE
SysFS ID: /class/block/sdb
SysFS BusID: 2:0:0:0
SysFS Device Link: /devices/pci0000:00/0000:00:04.2/usb1/1-2/1-2:1.0/host2/target2:0:0/2:0:0:0
Hardware Class: disk
Model: "ST380011A"
Vendor: usb 0x13fd "ST"
Device: usb 0x1040 "ST380011A"
Revision: "1.06"
Serial ID: "0000000000000062W"
Driver: "usb-storage", "sd"
Driver Modules: "usb_storage"
Device File: /dev/sdb (/dev/sg1)
Device Number: block 8:16-8:31 (char 21:1)
Features: Hotpluggable
Geometry (Logical): CHS 9729/255/63
Size: 156301488 sectors a 512 bytes
Speed: 12 Mbps
Module Alias: "usb:v13FDp1040d0106dc00dsc00dp00ic08isc06ip50"
Driver Info #0:
Driver Status: usb_storage is active
Driver Activation Cmd: "modprobe usb_storage"
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #17 (USB Controller)
hwinfo about the USB controller:
17: PCI 04.2: 0c03 USB Controller (UHCI)
[Created at pci.314]
UDI: /org/freedesktop/Hal/devices/pci_1106_3038
Unique ID: sRsQ.M6dR1NkQHEE
SysFS ID: /devices/pci0000:00/0000:00:04.2
SysFS BusID: 0000:00:04.2
Hardware Class: usb controller
Model: "VIA VT82xxxxx UHCI USB 1.1 Controller"
Vendor: pci 0x1106 "VIA Technologies, Inc."
Device: pci 0x3038 "VT82xxxxx UHCI USB 1.1 Controller"
SubVendor: pci 0x0925 "First International Computer, Inc."
SubDevice: pci 0x1234 "VA-502 Mainboard"
Revision: 0x10
Driver: "uhci_hcd"
Driver Modules: "uhci_hcd"
I/O Ports: 0xb400-0xb41f (rw)
IRQ: 6 (200000 events)
Module Alias: "pci:v00001106d00003038sv00000925sd00001234bc0Csc03 i00"
Driver Info #0:
Driver Status: uhci-hcd is not active
Driver Activation Cmd: "modprobe uhci-hcd"
Config Status: cfg=new, avail=yes, need=no, active=unknown
I will post the bonnie++ benchmark of the old drive soon. In the meantime, does anyone have a clue what could be causing this?