u-boot producing long delay when $serverip is unavailable...

Is it just me, or does u-boot w/ 2017_environment wait a really long time to boot if $serverip can be reach?

Is the best way to speed this up by altering this netconsole related line in the envars?

<<
fw_setenv preboot_nc 'setenv nc_ready 0; for pingstat in 1 2 3 4 5; do; sleep 1; if run if_netconsole; then setenv nc_ready 1; fi; done; if test $nc_ready -eq 1; then run start_netconsole; fi'


>>
fw_setenv preboot_nc 'setenv nc_ready 0; for pingstat in 1 2; do; sleep 1; if run if_netconsole; then setenv nc_ready 1; fi; done; if test $nc_ready -eq 1; then run start_netconsole; fi'

Or maybe I've missed something super obvious?

TIA,
davy

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• davy's Github Repo's rescue-dg

Edited 1 time(s). Last edit at 09/15/2021 11:26PM by davygravy.

Hi davy,

> Is it just me, or does u-boot w/ 2017_environment
> wait a really long time to boot if $serverip can
> be reach?

It is the normal behavior for mainine u-boot too, to produce a false positive sometime (it might have something to do with router behavior). So that's why I scripted 5 pings to make sure that if the serverip is not online, it would produce a real negative.


> Is the best way to speed this up by altering this
> netconsole related line in the envars?

You can go back the original envs as Jeff did long time ago, and do only 1 ping, too. If 5-pings is too long.

However, in the case of a false positive, the result is netconsole will take about 2 minutes to time out. And then the rest will proceed normally.

This is something I meant to look at in u-boot network driver to fix it, but never got around to do that.

-bodhi
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Edited 1 time(s). Last edit at 09/16/2021 03:44PM by bodhi.

I have it set for 2 and for me that is perfect. I imagine different network sizes and topologies might benefit from a bit more time. Easy fix for me. <thumbs up>.

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• davy's Github Repo's rescue-dg