Messages in this thread |  | | Date | Sat, 1 Aug 2009 17:44:08 -0500 | Subject | Re: Extremely slow IO with a PCMCIA CompactFlash adapter | From | Jack Byer <> |
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> Can you post the dmesg output from detecting the device?
I was originally getting this error:
irq 3: nobody cared (try booting with the "irqpoll" option) Pid: 23488, comm: modprobe Not tainted 2.6.31-rc4 #2 Call Trace: [<c104e3f4>] ? __report_bad_irq+0x24/0x90 [<c104e5b7>] ? note_interrupt+0x157/0x1a0 [<c104edcb>] ? handle_level_irq+0xbb/0x100 [<c1004ec7>] ? handle_irq+0x17/0x20 [<c100490a>] ? do_IRQ+0x3a/0xb0 [<c1003329>] ? common_interrupt+0x29/0x30 [<c10284b5>] ? __do_softirq+0x35/0xf0 [<c104d4ed>] ? handle_IRQ_event+0x2d/0xc0 [<c102859d>] ? do_softirq+0x2d/0x40 [<c102874d>] ? irq_exit+0x5d/0x80 [<c1004913>] ? do_IRQ+0x43/0xb0 [<c1003329>] ? common_interrupt+0x29/0x30 [<c104dc0a>] ? __setup_irq+0x17a/0x2c0 [<f80fa7f0>] ? ata_sff_interrupt+0x0/0xf0 [libata] [<c104de11>] ? request_threaded_irq+0xc1/0x100 [<c104f2c4>] ? devm_request_threaded_irq+0x34/0xa0 [<f80fa7f0>] ? ata_sff_interrupt+0x0/0xf0 [libata] [<c104f2ee>] ? devm_request_threaded_irq+0x5e/0xa0 [<f80e9c3f>] ? ata_host_activate+0x8f/0x110 [libata] [<f80fa7f0>] ? ata_sff_interrupt+0x0/0xf0 [libata] [<f99a6466>] ? pcmcia_init_one+0x2c6/0x340 [pata_pcmcia] [<c10c8e81>] ? sysfs_find_dirent+0x21/0x30 [<f8359a26>] ? pcmcia_device_probe+0xf6/0x1b0 [pcmcia] [<c10c9fa1>] ? sysfs_do_create_link+0xa1/0x140 [<c1155b24>] ? driver_probe_device+0x74/0x180 [<f835a0eb>] ? pcmcia_bus_match+0x1bb/0x4a0 [pcmcia] [<c1155cb1>] ? __driver_attach+0x81/0x90 [<f83597b0>] ? pcmcia_device_remove+0x0/0x140 [pcmcia] [<c1155474>] ? bus_for_each_dev+0x54/0x80 [<f83597b0>] ? pcmcia_device_remove+0x0/0x140 [pcmcia] [<c11559c6>] ? driver_attach+0x16/0x20 [<c1155c30>] ? __driver_attach+0x0/0x90 [<c1154d06>] ? bus_add_driver+0xb6/0x250 [<f83597b0>] ? pcmcia_device_remove+0x0/0x140 [pcmcia] [<c1155f27>] ? driver_register+0x67/0x150 [<f835ab51>] ? pcmcia_register_driver+0x91/0x110 [pcmcia] [<f99ab000>] ? pcmcia_init+0x0/0xa [pata_pcmcia] [<c100102a>] ? _stext+0x2a/0x160 [<c104b3c3>] ? sys_init_module+0xb3/0x1f0 [<c1081ca1>] ? sys_read+0x41/0x80 [<c1002cf4>] ? sysenter_do_call+0x12/0x26 handlers: [<f80fa7f0>] (ata_sff_interrupt+0x0/0xf0 [libata]) Disabling IRQ #3
Now I rebooted with irqpoll and everything looks good in dmesg:
yenta_cardbus 0000:00:0a.0: CardBus bridge found [103c:0024] yenta_cardbus 0000:00:0a.0: O2: res at 0x94/0xD4: 00/ea yenta_cardbus 0000:00:0a.0: O2: enabling read prefetch/write burst yenta_cardbus 0000:00:0a.0: ISA IRQ mask 0x00b8, PCI irq 11 yenta_cardbus 0000:00:0a.0: Socket status: 30000007 pcmcia_socket pcmcia_socket0: cs: IO port probe 0x100-0x3af: excluding 0x200-0x207 0x220-0x22f 0x330-0x337 0x378-0x37f 0x388-0x38f pcmcia_socket pcmcia_socket0: cs: IO port probe 0x3e0-0x4ff: clean. pcmcia_socket pcmcia_socket0: cs: IO port probe 0x820-0x8ff: clean. pcmcia_socket pcmcia_socket0: cs: IO port probe 0xc00-0xcf7: clean. pcmcia_socket pcmcia_socket0: cs: IO port probe 0x3c0-0x3d2: clean. pcmcia_socket pcmcia_socket0: cs: IO port probe 0x3d4-0x3df: clean. pcmcia_socket pcmcia_socket0: cs: IO port probe 0x1000-0x17ff: clean. pcmcia_socket pcmcia_socket0: cs: IO port probe 0xa00-0xaff: clean. pcmcia_socket pcmcia_socket0: pccard: PCMCIA card inserted into slot 0 pcmcia_socket pcmcia_socket0: cs: memory probe 0xa0000000-0xa0ffffff: clean. pcmcia 0.0: pcmcia: registering new device pcmcia0.0 scsi2 : pata_pcmcia ata3: PATA max PIO0 cmd 0x100 ctl 0x10e irq 3 ata3.01: both IDENTIFYs aborted, assuming NODEV ata3.00: CFA: IBM-DMDM-10340, MD2IC501, max PIO1 ata3.00: 700560 sectors, multi 0: LBA ata3.00: configured for PIO0 isa bounce pool size: 16 pages scsi 2:0:0:0: Direct-Access ATA IBM-DMDM-10340 MD2I PQ: 0 ANSI: 5 sd 2:0:0:0: [sdb] 700560 512-byte logical blocks: (358 MB/342 MiB) sd 2:0:0:0: [sdb] Write Protect is off sd 2:0:0:0: [sdb] Mode Sense: 00 3a 00 00 sd 2:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA sd 2:0:0:0: Attached scsi generic sg2 type 0 sdb: sdb1 sd 2:0:0:0: [sdb] Attached SCSI removable disk
Now my transfer rate has increased to 20 kilobyte / second read, about 4 times faster than before but still pretty slow.
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