Hali,
A doksi szerinti 21 GB/h (azaz kb. 6 MB/sec) a sebessege az USB-s
DAT72-nek, amit tomoritetlen adatra ertenek, amugy 3 MB/sec. A
problemam az, hogy ennek a harmadat sem tudom elerni. Egy nagy fajlnal
(700 MB) 950 kB/sec kornyeken van a sebesseg. Ugy tunik, mintha nem
lenne USB 2.0 kompatibilis a rendszer, hanem csak 1.1 (12 Mbit/sec), pedig
az! Mi lehet az oka a dolognak? Itt az lspci es a cat
/proc/bus/usb/devices kimenete, a kernelem 2.6.18.3-as.
Ja, es vegigprobaltam mind a 4 portot, mert az lspci-bol ugy tunik, hogy 3
port USB 1.1-es, es csak 1 port USB 2.0-s, de ez sem hozta meg a vart
sebesseget. Mind a 4 alaplapi es mind a 4 bovitokartyas USB porton
vegigmentem...
Elore is koszi a segitseget,
Udv,
BB
$ cat /proc/bus/usb/devices
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 8
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 2.06
S: Manufacturer=Linux 2.6.18.3 ehci_hcd
S: Product=EHCI Host Controller
S: SerialNumber=0000:00:10.4
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=256ms
T: Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 4 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=03f0 ProdID=0125 Rev=30.30
S: Manufacturer=Hewlett Packard
S: Product=DAT72 USB Tape
S: SerialNumber=4855310638384D4B
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 2mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
$ lspci
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8377 [KT400/KT600 AGP]
Host Bridge (rev 80)
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge
0000:00:09.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host
Controller (rev 46)
0000:00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
0000:00:0b.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
0000:00:0b.1 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
0000:00:0b.2 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
0000:00:0b.3 USB Controller: ALi Corporation USB 2.0 Controller (rev 01)
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