03.09.2011 00:03, Michael Shigorin пишет:
> On Fri, Sep 02, 2011 at 06:34:12PM +1000, Occisor wrote:
>> Свежеустановленный kdesktop 6, скорость копирования на и с
>> usb-накопителей (флешек, hdd) с разными файловыми системами, сразу
>> падает до 1-го мегабайта. На P5 было нормально. Куда копнуть?
>
> dmesg | grep hci
>
> (обратите внимание на порядок загрузки -- ehci_hcd
> должен загружаться до uhci_hcd/ohci_hcd, о чём сам
> и рассказывает, если это не так)
>

# dmesg | grep hci
[    8.638545] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    8.653997] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    8.654002] Warning! ehci_hcd should always be loaded before uhci_hcd 
and ohci_hcd, not after
[    9.577278] uhci_hcd: USB Universal Host Controller Interface driver
[    9.585306] ohci_hcd 0000:00:02.0: PCI INT A -> Link[APCF] -> GSI 21 
(level, high) -> IRQ 21
[    9.585337] ohci_hcd 0000:00:02.0: setting latency timer to 64
[    9.585342] ohci_hcd 0000:00:02.0: OHCI Host Controller
[    9.585379] ohci_hcd 0000:00:02.0: new USB bus registered, assigned 
bus number 1
[    9.585428] ohci_hcd 0000:00:02.0: irq 21, io mem 0xe4080000
[    9.642102] usb usb1: Manufacturer: Linux 3.0.3-std-def-alt0.M60P.1 
ohci_hcd
[    9.644284] ohci_hcd 0000:00:02.1: PCI INT B -> Link[APCG] -> GSI 20 
(level, high) -> IRQ 20
[    9.644321] ohci_hcd 0000:00:02.1: setting latency timer to 64
[    9.644326] ohci_hcd 0000:00:02.1: OHCI Host Controller
[    9.644354] ohci_hcd 0000:00:02.1: new USB bus registered, assigned 
bus number 2
[    9.644398] ohci_hcd 0000:00:02.1: irq 20, io mem 0xe4083000
[    9.719186] usb usb2: Manufacturer: Linux 3.0.3-std-def-alt0.M60P.1 
ohci_hcd
[    9.719740] ehci_hcd 0000:00:02.2: PCI INT C -> Link[APCL] -> GSI 22 
(level, high) -> IRQ 22
[    9.719770] ehci_hcd 0000:00:02.2: setting latency timer to 64
[    9.719775] ehci_hcd 0000:00:02.2: EHCI Host Controller
[    9.719790] ehci_hcd 0000:00:02.2: new USB bus registered, assigned 
bus number 3
[    9.719839] ehci_hcd 0000:00:02.2: debug port 1
[    9.719849] ehci_hcd 0000:00:02.2: cache line size of 32 is not supported
[    9.719880] ehci_hcd 0000:00:02.2: irq 22, io mem 0xe4086000
[    9.719991] uhci_hcd 0000:01:08.0: PCI INT A -> Link[APC1] -> GSI 16 
(level, high) -> IRQ 16
[    9.720065] uhci_hcd 0000:01:08.0: UHCI Host Controller
[    9.720077] uhci_hcd 0000:01:08.0: new USB bus registered, assigned 
bus number 4
[    9.720121] uhci_hcd 0000:01:08.0: irq 16, io base 0x0000c000
[    9.720188] usb usb4: Manufacturer: Linux 3.0.3-std-def-alt0.M60P.1 
uhci_hcd
[    9.720476] uhci_hcd 0000:01:08.1: PCI INT B -> Link[APC2] -> GSI 17 
(level, high) -> IRQ 17
[    9.720486] uhci_hcd 0000:01:08.1: UHCI Host Controller
[    9.720496] uhci_hcd 0000:01:08.1: new USB bus registered, assigned 
bus number 5
[    9.720528] uhci_hcd 0000:01:08.1: irq 17, io base 0x0000c400
[    9.720588] usb usb5: Manufacturer: Linux 3.0.3-std-def-alt0.M60P.1 
uhci_hcd
[    9.728074] ehci_hcd 0000:00:02.2: USB 2.0 started, EHCI 1.00
[    9.728148] usb usb3: Manufacturer: Linux 3.0.3-std-def-alt0.M60P.1 
ehci_hcd
[    9.728706] ehci_hcd 0000:01:08.2: PCI INT C -> Link[APC3] -> GSI 18 
(level, high) -> IRQ 18
[    9.728745] ehci_hcd 0000:01:08.2: EHCI Host Controller
[    9.728758] ehci_hcd 0000:01:08.2: new USB bus registered, assigned 
bus number 6
[    9.728839] ehci_hcd 0000:01:08.2: irq 18, io mem 0xe3010000
[    9.740374] ehci_hcd 0000:01:08.2: USB 2.0 started, EHCI 1.00
[    9.740446] usb usb6: Manufacturer: Linux 3.0.3-std-def-alt0.M60P.1 
ehci_hcd
[   10.088876] firewire_ohci 0000:00:0d.0: PCI INT A -> Link[APCM] -> 
GSI 20 (level, high) -> IRQ 20
[   10.088885] firewire_ohci 0000:00:0d.0: setting latency timer to 64
[   10.152180] firewire_ohci: Added fw-ohci device 0000:00:0d.0, OHCI 
v1.10, 4 IR + 4 IT contexts, quirks 0x0
[   10.588031] usb 3-6: new high speed USB device number 4 using ehci_hcd
[   11.252018] usb 1-1: new full speed USB device number 2 using ohci_hcd
[   11.996052] usb 1-2: new low speed USB device number 3 using ohci_hcd
[   12.448043] usb 5-1: new low speed USB device number 2 using uhci_hcd
[   12.888035] usb 5-2: new low speed USB device number 3 using uhci_hcd
[ 6034.164042] usb 3-3: new high speed USB device number 5 using ehci_hcd
[ 6034.732036] usb 3-3: new high speed USB device number 6 using ehci_hcd
[ 6035.300039] usb 3-3: new high speed USB device number 7 using ehci_hcd
[ 6035.828042] usb 3-3: new high speed USB device number 8 using ehci_hcd
[ 6036.628039] usb 2-1: new full speed USB device number 2 using ohci_hcd

В top параметр %iowait под 100%.
Порядок, я так понимаю, нарушен, как это вылечить?