From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030225 Description of problem: When you plug in a USB disk, such as the <a href="http://www.archos.com/lang=en//products/prw_500277.html?country=us">Archos Jukebox Recorder 20</a> into a pre-booted virgin RedHat 9 system, the system generates several error messages and disables the USB Mouse. `cat`ing /dev/bus/usb/devices hangs for many seconds. Exiting and entering X does not restore mouse movement. I have not tried loading and unloading the USB drivers under RedHat 9, but since I cannot do this when X is running, it is essentially as drastic as rebooting for me. After the first failure, I modified the system to boot with "noapic" on the boot line (suggestion from the net), with no particular success in terms of allowing the disk to be connected after boot--it may or may not have helped the system when the disk was plugged in during boot. If the USB disk is plugged into the system when it reboots, it is recognized by the system and can be used, mounted, etc. You may additionally unplug and replug the device without any ill effects. However, the transfer rate is very slow (600 kb/s). While the system is USB 1.1 instead of USB 2.0, one would assume that the performance would be closer to USB 1.1 speeds (12Mb/s). <a href="http://electronics.cnet.com/electronics/0-6342420-1305-8408812-1.html">CNet claims</a> to get around 8Mb/s on USB 1.1 and 67Mb/s on USB 2.0, so this is not a limitation of the USB device. Additionally, the performance of the *rest* of the system very much sucks, with high load averages, slow and jerky responsiveness and periodic 1-2 second freezes. Version-Release number of selected component (if applicable): RedHat 9 virgin How reproducible: Always Steps to Reproduce: 1.Boot system w/o disk attached w/USB mouse 2.Enter X 3.Hot plug USB Disk 4.Watch mouse freeze, disk not be available Alternately: 1.Boot system w/disk attached w/USB mouse 2.Mount disk 3.Transfer lots of data 4.Watch as performance crawls to halt, system randomly freezes, and data transfer is slow Actual Results: w/o attached at boot USB disk not detected/mouse does not work w/attached at boot System performance slow, random hangs, data transfer slow Expected Results: USB disk should be detected, mouse should work, performance should not be drasticly affected, data transfer should be close to what Windows users get. Additional info: Bugzilla barfs when this is filled out. Will attempt to submit as followup
The following diagnostics are from the system when it was not booted with the USB disk attached, but instead hot-plugged. ---------------------------------------------------------------------- Apr 10 21:54:38 startide kernel: usb-uhci.c: USB UHCI at I/O 0xd400, IRQ 11 Apr 10 21:54:38 startide kernel: usb-uhci.c: Detected 2 ports Apr 10 21:54:38 startide kernel: usb.c: new USB bus registered, assigned bus number 1 Apr 10 21:54:38 startide kernel: hub.c: USB hub found Apr 10 21:54:38 startide kernel: hub.c: 2 ports detected Apr 10 21:54:38 startide kernel: PCI: Found IRQ 11 for device 00:04.3 Apr 10 21:54:38 startide kernel: PCI: Sharing IRQ 11 with 00:04.2 Apr 10 21:54:38 startide kernel: PCI: Sharing IRQ 11 with 00:05.0 Apr 10 21:54:38 startide kernel: usb-uhci.c: USB UHCI at I/O 0xd000, IRQ 11 Apr 10 21:54:38 startide kernel: usb-uhci.c: Detected 2 ports Apr 10 21:54:38 startide kernel: usb.c: new USB bus registered, assigned bus number 2 Apr 10 21:54:38 startide kernel: hub.c: USB hub found Apr 10 21:54:38 startide kernel: hub.c: 2 ports detected Apr 10 21:54:38 startide kernel: usb-uhci.c: v1.275:USB Universal Host Controller Interface driver Apr 10 21:54:38 startide kernel: usb.c: registered new driver hiddev Apr 10 21:54:38 startide kernel: usb.c: registered new driver hid Apr 10 21:54:39 startide kernel: hid-core.c: v1.8.1 Andreas Gal, Vojtech Pavlik <vojtech> Apr 10 21:54:39 startide kernel: hid-core.c: USB HID support drivers Apr 10 21:54:39 startide kernel: mice: PS/2 mouse device common for all mice Apr 10 21:54:39 startide kernel: hub.c: new USB device 00:04.2-1, assigned address 2 Apr 10 21:54:39 startide kernel: usb-uhci.c: interrupt, status 3, frame# 627 Apr 10 21:54:39 startide automount[854]: using kernel protocol version 3 Apr 10 21:54:39 startide kernel: input0: USB HID v1.00 Mouse [Microsoft Microsoft Wheel Mouse Optical&] on usb1:2.0 [...] Apr 10 21:55:25 startide kernel: hub.c: new USB device 00:04.2-2, assigned address 3 Apr 10 21:55:25 startide kernel: usb.c: USB device 3 (vend/prod 0x5ab/0x60) is not claimed by any active driver. Apr 10 21:55:29 startide /etc/hotplug/usb.agent: Setup usb-storage for USB product 5ab/60/1101 Apr 10 21:55:29 startide kernel: Initializing USB Mass Storage driver... Apr 10 21:55:29 startide kernel: usb.c: registered new driver usb-storage Apr 10 21:55:29 startide kernel: usb-uhci.c: interrupt, status 2, frame# 1138 Apr 10 21:55:30 startide kernel: usb_control/bulk_msg: timeout Apr 10 21:55:30 startide kernel: scsi1 : SCSI emulation for USB Mass Storage devices Apr 10 21:55:39 startide kernel: usb-uhci.c: interrupt, status 3, frame# 1142 Apr 10 21:55:44 startide kernel: usb_control/bulk_msg: timeout Apr 10 21:55:49 startide kernel: usb_control/bulk_msg: timeout Apr 10 21:55:49 startide kernel: usb.c: USB disconnect on device 00:04.2-2 address 3 Apr 10 21:55:50 startide devlabel: devlabel service started/restarted Apr 10 21:55:54 startide kernel: usb_control/bulk_msg: timeout Apr 10 21:55:54 startide kernel: hub.c: USB device not accepting new address (error=-110) Apr 10 21:55:54 startide kernel: hub.c: new USB device 00:04.2-2, assigned address 4 Apr 10 21:55:59 startide kernel: usb-storage: host_reset() requested but not implemented Apr 10 21:55:59 startide kernel: usb_control/bulk_msg: timeout Apr 10 21:55:59 startide kernel: usb.c: USB device not accepting new address=4 (error=-110) Apr 10 21:55:59 startide kernel: hub.c: new USB device 00:04.2-2, assigned address 5 Apr 10 21:56:04 startide kernel: usb_control/bulk_msg: timeout Apr 10 21:56:04 startide kernel: usb.c: USB device not accepting new address=5 (error=-110) Apr 10 21:56:09 startide kernel: scsi: device set offline - command error recover failed: host 1 channel 0 id 0 lun 0 Apr 10 21:56:09 startide kernel: USB Mass Storage support registered. Apr 10 21:56:10 startide devlabel: devlabel service started/restarted ---------------------------------------------------------------------- The following diagnostics are from the system when it was booted with the USB disk attached from boot, and while a transfer to the disk was underway. As noted above, general system slowness and hangs galore. /var/log/messages ---------------------------------------------------------------------- Apr 10 21:58:38 startide kernel: usb.c: registered new driver usbdevfs Apr 10 21:58:38 startide kernel: usb.c: registered new driver hub Apr 10 21:58:38 startide kernel: usb-uhci.c: $Revision: 1.275 $ time 17:59:01 Mar 13 2003 Apr 10 21:58:38 startide kernel: usb-uhci.c: High bandwidth mode enabled Apr 10 21:58:38 startide kernel: PCI: Found IRQ 11 for device 00:04.2 Apr 10 21:58:38 startide kernel: PCI: Sharing IRQ 11 with 00:04.3 Apr 10 21:58:38 startide kernel: PCI: Sharing IRQ 11 with 00:05.0 Apr 10 21:58:38 startide kernel: usb-uhci.c: USB UHCI at I/O 0xd400, IRQ 11 Apr 10 21:58:38 startide kernel: usb-uhci.c: Detected 2 ports Apr 10 21:58:38 startide kernel: usb.c: new USB bus registered, assigned bus number 1 Apr 10 21:58:38 startide kernel: hub.c: USB hub found Apr 10 21:58:38 startide kernel: hub.c: 2 ports detected Apr 10 21:58:38 startide kernel: PCI: Found IRQ 11 for device 00:04.3 Apr 10 21:58:38 startide kernel: PCI: Sharing IRQ 11 with 00:04.2 Apr 10 21:58:38 startide kernel: PCI: Sharing IRQ 11 with 00:05.0 Apr 10 21:58:38 startide kernel: usb-uhci.c: USB UHCI at I/O 0xd000, IRQ 11 Apr 10 21:58:38 startide kernel: usb-uhci.c: Detected 2 ports Apr 10 21:58:38 startide kernel: usb.c: new USB bus registered, assigned bus number 2 Apr 10 21:58:38 startide kernel: hub.c: USB hub found Apr 10 21:58:38 startide kernel: hub.c: 2 ports detected Apr 10 21:58:38 startide kernel: usb-uhci.c: v1.275:USB Universal Host Controller Interface driver Apr 10 21:58:38 startide kernel: usb.c: registered new driver hiddev Apr 10 21:58:38 startide kernel: usb.c: registered new driver hid Apr 10 21:58:38 startide kernel: hid-core.c: v1.8.1 Andreas Gal, Vojtech Pavlik <vojtech> Apr 10 21:58:38 startide kernel: hid-core.c: USB HID support drivers Apr 10 21:58:38 startide kernel: mice: PS/2 mouse device common for all mice Apr 10 21:58:38 startide kernel: hub.c: new USB device 00:04.2-1, assigned address 2 Apr 10 21:58:38 startide kernel: usb-uhci.c: interrupt, status 3, frame# 626 Apr 10 21:58:39 startide kernel: input0: USB HID v1.00 Mouse [Microsoft Microsoft Wheel Mouse Optical&] on usb1:2.0 Apr 10 21:58:39 startide kernel: hub.c: new USB device 00:04.2-2, assigned address 3 Apr 10 21:58:39 startide kernel: usb.c: USB device 3 (vend/prod 0x5ab/0x60) is not claimed by any active driver. Apr 10 21:58:39 startide kernel: SCSI subsystem driver Revision: 1.00 Apr 10 21:58:39 startide kernel: Initializing USB Mass Storage driver... Apr 10 21:58:39 startide kernel: usb.c: registered new driver usb-storage Apr 10 21:58:39 startide kernel: scsi0 : SCSI emulation for USB Mass Storage devices Apr 10 21:58:39 startide kernel: Vendor: TOSHIBA Model: MK2018GAS Rev: Q2.0 Apr 10 21:58:39 startide kernel: Type: Direct-Access ANSI SCSI revision: 02 Apr 10 21:58:39 startide kernel: USB Mass Storage support registered. [...] Apr 10 22:00:18 startide kernel: Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 Apr 10 22:00:18 startide kernel: SCSI device sda: 39070080 512-byte hdwr sectors (20004 MB) Apr 10 22:00:18 startide kernel: sda: sda1 Apr 10 22:00:30 startide kernel: usb.c: USB disconnect on device 00:04.2-2 address 3 Apr 10 22:00:30 startide devlabel: devlabel service started/restarted Apr 10 22:00:52 startide kernel: hub.c: new USB device 00:04.2-2, assigned address 4 Apr 10 22:00:55 startide /etc/hotplug/usb.agent: Setup usb-storage for USB product 5ab/60/1101 Apr 10 22:01:05 startide kernel: usb-uhci.c: interrupt, status 3, frame# 225 Apr 10 22:01:05 startide devlabel: devlabel service started/restarted Apr 10 22:01:49 startide kernel: usb.c: USB disconnect on device 00:04.2-2 address 4 Apr 10 22:01:50 startide devlabel: devlabel service started/restarted ---------------------------------------------------------------------- iostat -x /dev/sda 60 ---------------------------------------------------------------------- Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util /dev/sda 0.00 1475.95 0.02 8.30 0.03 1484.50 0.02 742.25 178.50 630.04 7958.66 120.24 100.00 /dev/sda 0.00 1356.70 0.55 7.88 0.55 1363.78 0.28 681.89 161.78 516.68 6563.30 117.04 98.70 ---------------------------------------------------------------------- mpstat ---------------------------------------------------------------------- 15:03:40 CPU %user %nice %system %idle intr/s 15:04:10 all 0.20 0.00 3.80 96.00 494.40 15:04:15 all 0.60 0.00 0.80 98.60 464.00 ---------------------------------------------------------------------- cat /proc/interrupts; sleep 5; cat /proc/interrupts; [subtract] ---------------------------------------------------------------------- CPU0 0: 503 XT-PIC timer 1: q XT-PIC keyboard 2: 0 XT-PIC cascade 5: 431 XT-PIC nvidia 8: 0 XT-PIC rtc 9: 16 XT-PIC eth0 10: 236 XT-PIC EMU10K1 11: 1082 XT-PIC usb-uhci, usb-uhci 14: 8 XT-PIC ide0 15: 0 XT-PIC ide1 NMI: 0 ERR: 0 ---------------------------------------------------------------------- cat /proc/bus/usb/devices ---------------------------------------------------------------------- T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 0.00 S: Product=USB UHCI Root Hub S: SerialNumber=d000 C:* #Ifs= 1 Cfg#= 1 Atr=40 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= 8 Ivl=255ms T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 B: Alloc= 93/900 us (10%), #Int= 1, #Iso= 0 D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 0.00 S: Product=USB UHCI Root Hub S: SerialNumber=d400 C:* #Ifs= 1 Cfg#= 1 Atr=40 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= 8 Ivl=255ms T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=1.5 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=045e ProdID=0040 Rev= 1.21 S: Manufacturer=Microsoft S: Product=Microsoft Wheel Mouse Optical® C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=02 Driver=hid E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=10ms T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#= 6 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=05ab ProdID=0060 Rev=11.01 S: Manufacturer=ARCHOS S: Product=ARCHOS USB2.0 (P4a) S: SerialNumber=wwww.archos.comA C:* #Ifs= 1 Cfg#= 2 Atr=c0 MxPwr= 98mA I: If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=83(I) Atr=03(Int.) MxPS= 2 Ivl=32ms ---------------------------------------------------------------------- lsmod ---------------------------------------------------------------------- Module Size Used by Tainted: P emu10k1 69032 1 (autoclean) ac97_codec 13640 0 (autoclean) [emu10k1] sound 74228 0 (autoclean) [emu10k1] soundcore 6404 7 (autoclean) [emu10k1 sound] nls_iso8859-1 3516 1 (autoclean) nls_cp437 5116 1 (autoclean) vfat 13004 1 (autoclean) fat 38808 0 (autoclean) [vfat] sd_mod 13516 2 (autoclean) agpgart 47776 3 (autoclean) nvidia 1678432 10 (autoclean) parport_pc 19076 1 (autoclean) lp 8996 0 (autoclean) parport 37056 1 (autoclean) [parport_pc lp] nfs 81336 7 (autoclean) nfsd 80176 8 (autoclean) lockd 58704 1 (autoclean) [nfs nfsd] sunrpc 81564 1 (autoclean) [nfs nfsd lockd] iptable_filter 2412 0 (autoclean) (unused) ip_tables 15096 1 [iptable_filter] autofs 13268 1 (autoclean) 8139too 18088 1 mii 3976 0 [8139too] sg 36524 0 (autoclean) sr_mod 18136 0 (autoclean) microcode 4668 0 (autoclean) ide-scsi 12208 0 ide-cd 35708 0 cdrom 33728 0 [sr_mod ide-cd] usb-storage 69332 1 scsi_mod 107160 5 [sd_mod sg sr_mod ide-scsi usb-storage] keybdev 2944 0 (unused) mousedev 5492 1 hid 22148 0 (unused) input 5856 0 [keybdev mousedev hid] usb-uhci 26348 0 (unused) usbcore 78784 1 [usb-storage hid usb-uhci] ext3 70784 5 jbd 51892 5 [ext3] ---------------------------------------------------------------------- cat /etc/modules.conf ---------------------------------------------------------------------- alias usb-controller usb-uhci alias eth0 8139too alias sound-slot-0 emu10k1 alias sound-slot-1 cmpci post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || : pre-remove sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || : post-install sound-slot-1 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || : pre-remove sound-slot-1 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || : ---------------------------------------------------------------------- Motherboard: ASUS CUV4X-E cat /proc/cpuinfo ---------------------------------------------------------------------- processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 10 cpu MHz : 999.752 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1992.29 ----------------------------------------------------------------------
Several updates: 1. Bug 88402 deals with Archos 20G, but running over EHCI HC. This is just FYI, please do not dup! 2. Please try 2.4.20-18. 3. When we discuss performance, please stick with B for bytes and b for bits. The 600KB/s over USB 1.1 would be a very good performance, indeed. Otherwise, a very good report. One minor thing - I would prefer dmesg output with the messages file. Some information does not get to messages.
Somehow my emailed reply didn't seem to make it into bugzilla. Hrm. Included here: 2. Please try 2.4.20-18. I tried it, with some better issues and some worse issues. * When I plugged in the ArchOS juke, X froze when I tried to `ls /proc/bus/usb` I have a USB mouse, but my *keyboard* isn't USB. Very strange. I was able to Alt-F1 to switch to a different console. In second vty, `ls /proc/bus/usb` did not return From dmesg ---------------------------------------------------------------------- +hub.c: new USB device 00:04.2-2, assigned address 3 +usb.c: USB device 3 (vend/prod 0x5ab/0x60) is not claimed by any active driver. +Initializing USB Mass Storage driver... +usb.c: registered new driver usb-storage +scsi1 : SCSI emulation for USB Mass Storage devices +usb-uhci.c: interrupt, status 3, frame# 1421 +usb_control/bulk_msg: timeout ---------------------------------------------------------------------- * After rebooting, dmesg sez: ---------------------------------------------------------------------- Linux version 2.4.20-18.9 (bhcompile.redhat.com) (gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)) #1 Thu May 29 07:08:16 EDT 2003 [...] usb.c: registered new driver usbdevfs usb.c: registered new driver hub usb-uhci.c: $Revision: 1.275 $ time 07:14:02 May 29 2003 usb-uhci.c: High bandwidth mode enabled PCI: Found IRQ 11 for device 00:04.2 PCI: Sharing IRQ 11 with 00:04.3 PCI: Sharing IRQ 11 with 00:05.0 usb-uhci.c: USB UHCI at I/O 0xd400, IRQ 11 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 1 hub.c: USB hub found hub.c: 2 ports detected PCI: Found IRQ 11 for device 00:04.3 PCI: Sharing IRQ 11 with 00:04.2 PCI: Sharing IRQ 11 with 00:05.0 usb-uhci.c: USB UHCI at I/O 0xd000, IRQ 11 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 2 hub.c: USB hub found hub.c: 2 ports detected usb-uhci.c: v1.275:USB Universal Host Controller Interface driver usb.c: registered new driver hiddev usb.c: registered new driver hid hid-core.c: v1.8.1 Andreas Gal, Vojtech Pavlik <vojtech> hid-core.c: USB HID support drivers mice: PS/2 mouse device common for all mice hub.c: new USB device 00:04.2-1, assigned address 2 usb-uhci.c: interrupt, status 3, frame# 632 input0: USB HID v1.00 Mouse [Microsoft Microsoft Wheel Mouse Optical®] on usb1:2 .0 EXT3 FS 2.4-0.9.19, 19 August 2002 on ide0(3,3), internal journal Adding Swap: 522072k swap-space (priority -1) hub.c: new USB device 00:04.2-2, assigned address 3 usb.c: USB device 3 (vend/prod 0x5ab/0x60) is not claimed by any active driver. SCSI subsystem driver Revision: 1.00 Initializing USB Mass Storage driver... usb.c: registered new driver usb-storage scsi0 : SCSI emulation for USB Mass Storage devices usb-uhci.c: interrupt, status 3, frame# 1847 Vendor: TOSHIBA Model: MK2018GAS Rev: Q2.0 Type: Direct-Access ANSI SCSI revision: 02 WARNING: USB Mass Storage data integrity not assured USB Mass Storage device found at 3 USB Mass Storage support registered. Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 SCSI device sda: 39070080 512-byte hdwr sectors (20004 MB) sda: sda1 [...] ---------------------------------------------------------------------- E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=10ms T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=05ab ProdID=0060 Rev=11.01 S: Manufacturer=ARCHOS S: Product=ARCHOS USB2.0 (P4a) S: SerialNumber=wwww.archos.comA C:* #Ifs= 1 Cfg#= 2 Atr=c0 MxPwr= 98mA I: If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=83(I) Atr=03(Int.) MxPS= 2 Ivl=32ms ---------------------------------------------------------------------- System performance during my transfer of a 466 MB file was very sluggish at best, with frequent hangs of the system (or at least X) for over a minute at a time, high load averages, and all sorts of unacceptable user-level performance behavior. However, during this severe user level performance problem, I was able to write to the disk at 1.2 MB/s. Cannot argue too much with that. I then tried read performance (running md5 on the transferred file, which is not *totally* read performance, but most likely good enough--I got a repeatable 48.7 MB/s using md5sum on the same file from IDE disk). I did not appear to have the user-level performance problems that I experienced during the write operation. Read performance came in at 1.62 MB/s the first time I measured, and .92 MB/s the second time--I have to wonder if caching was somewhat involved even though I md5'd the IDE file between the USB write and read and I only have 512MB of memory, since I was under the impression that USB 1.1 maxed out at 1.5 MB/s. * Unplugging and plugging the USB device This seemed to work without issue. ---------------------------------------------------------------------- usb.c: USB disconnect on device 00:04.2-2 address 3 hub.c: new USB device 00:04.2-2, assigned address 4 WARNING: USB Mass Storage data integrity not assured USB Mass Storage device found at 4 usb-uhci.c: interrupt, status 3, frame# 822 ----------------------------------------------------------------------
See also bug 88402 (don't dup).
So, does FC2 work?
It works, thanks.
The 2.6 has a way better usb-storage, so everyone is happy. Closing.