timeout udevd too hort

timeout udevd too hort

[Kay Sievers]

Bahh, I thought we introduced a bug in udevd with the recent changes,
but it seems I have a really slow device here.

We currently have a event timeout of 5 seconds to wait for a missing
event. I can catch it by activating my Thinkpad's builtin bluetooth
hardware. Sometimes the kernel needs 6 seconds to submit all the
hotplug events for this device.
Should we increase it to 10 seconds?

thanks,
Kay


device:
  Bus 001 Device 004: ID 0aec:3260 Neodio Technologies Corp.

udevdsend log:
  Apr  1 02:54:08 pim udevsend[12119]: main: version 023_bk
  Apr  1 02:54:08 pim udevsend[12119]: main: subsystem = 'tty'
  Apr  1 02:54:08 pim udevsend[12119]: main: DEVPATH = '/class/tty/ttyUB0'
  Apr  1 02:54:08 pim udevsend[12119]: main: ACTION = 'remove'
  Apr  1 02:54:08 pim udevsend[12119]: main: SEQNUM = '340'
  Apr  1 02:54:08 pim udevsend[12120]: main: version 023_bk
  Apr  1 02:54:08 pim udevsend[12120]: main: subsystem = 'usb'
  Apr  1 02:54:08 pim udevsend[12120]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1'
  Apr  1 02:54:08 pim udevsend[12120]: main: ACTION = 'remove'
  Apr  1 02:54:08 pim udevsend[12120]: main: SEQNUM = '344'
  Apr  1 02:54:09 pim udevsend[12133]: main: version 023_bk
  Apr  1 02:54:09 pim udevsend[12133]: main: subsystem = 'usb'
  Apr  1 02:54:09 pim udevsend[12133]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.1'
  Apr  1 02:54:09 pim udevsend[12133]: main: ACTION = 'remove'
  Apr  1 02:54:09 pim udevsend[12133]: main: SEQNUM = '342'
  Apr  1 02:54:10 pim udevsend[12136]: main: version 023_bk
  Apr  1 02:54:10 pim udevsend[12136]: main: subsystem = 'usb'
  Apr  1 02:54:10 pim udevsend[12136]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.2'
  Apr  1 02:54:10 pim udevsend[12136]: main: ACTION = 'remove'
  Apr  1 02:54:10 pim udevsend[12136]: main: SEQNUM = '343'
  Apr  1 02:54:13 pim udevsend[12141]: main: version 023_bk
  Apr  1 02:54:13 pim udevsend[12141]: main: subsystem = 'usb'
  Apr  1 02:54:13 pim udevsend[12141]: main: DEVPATH = '/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0'
  Apr  1 02:54:13 pim udevsend[12141]: main: ACTION = 'remove'
  Apr  1 02:54:13 pim udevsend[12141]: main: SEQNUM = '341'


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Re: timeout udevd too hort

[Greg KH]

On Thu, Apr 01, 2004 at 03:07:26AM +0200, Kay Sievers wrote:
> Bahh, I thought we introduced a bug in udevd with the recent changes,
> but it seems I have a really slow device here.
> 
> We currently have a event timeout of 5 seconds to wait for a missing
> event. I can catch it by activating my Thinkpad's builtin bluetooth
> hardware. Sometimes the kernel needs 6 seconds to submit all the
> hotplug events for this device.

Ouch, that log trail was pretty bad.  It's nice to see we can duplicate
out-of-order messages :)

> Should we increase it to 10 seconds?

I don't have a problem with doing that.  Anyone else?

thanks,

greg k-h


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