[systemd-devel] How to delete device units presented in systemd-analyze plot.
Mantas Mikulėnas
grawity at gmail.com
Thu Aug 8 02:52:15 PDT 2013
On Thu, Aug 8, 2013 at 4:10 AM, Tony Seo <tonyseo7 at gmail.com> wrote:
>
> I understand what you mean, but I think that I will cut the time for
> loading device unit if I keep those from appearing on my plot.
No, just hiding them will not change anything.
> What do think that loading time for device units doesn't affect to boot
> speed at machine?
It doesn't, because the units do not *exist*.
That's the part you keep misunderstanding. Device units by themselves
will not *make* systemd wait for a device. They exist only to *show*
that systemd *knows about* that device.
If you turn on the computer, and it takes several seconds for a device
like /sys/devices/platform/soc-audio/sound/card0 to appear, then it
*will* take several seconds for that device to appear, whether a
systemd shows it as a .device unit or not.
/sys/devices/platform/soc-audio/sound/card0
/sys/devices/platform/tcc-gmac/net/eth0
/sys/devices/platform/tcc-uart.0/tty/ttyTCC0
/sys/devices/platform/dwc_otg.0/gadget/tty/ttyGS0
...what kind of a device is it, anyway? A raspberryπ?
--
Mantas Mikulėnas <grawity at gmail.com>
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