[systemd-devel] udev took too long to start

[Chen Jie]

2011/5/18 Kay Sievers <kay.sievers at vrfy.org>:
>
> Completely different! That's an Intel Core Duo 1.4 GHz laptop:
>  systemd-analyze blame | grep udev
>  87ms udev-trigger.service
>  13ms udev.service
I updated systemd(to v26) and udev(to 168), still got ~1s startup time
of udev.service plus udev-trigger.service.

May be some distribution added udev rules cause this? I'll do a
bootchart to see the detail.

>
>>> Care to provide the full output of:
>>>  time udevadm test /class/block/sda1
>>> ?
>> real    0m0.146s
>> user    0m0.084s
>> sys     0m0.048s
>> See udevadm_sda2.txt in detail.
>
> It seems not slow. But it looks a bit weird. You are sure there is
> nothing missing in the file?
It was gathered by redirecting the output, shouldn't miss anything...
What's wrong with the log? No scsi_id invocation message present?

> We never call scsi_id, ata_id in your output, but get the links from it?
>  udev_rules_new: rules use 153420 bytes tokens (12785 * 12 bytes),
> 29178 bytes buffer
>  ...
>  udev_rules_apply_to_event: LINK
> 'disk/by-id/scsi-SATA_SAMSUNG_HM121HCS12SJD0S208504-part2'
> /lib/udev/rules.d/60-persistent-storage.rules:99