Strange behavior after running under high load

[Stefan Esser]

Am 29.03.21 um 03:11 schrieb Mateusz Guzik:
> This may be the problem fixed in
> e9272225e6bed840b00eef1c817b188c172338ee ("vfs: fix vnlru marker
> handling for filtered/unfiltered cases").

My system was up for less than 24 hours and using a kernel and world
built on the latest -CURRENT of less than 1 hour before the reboot:

FreeBSD 14.0-CURRENT #33 main-n245694-90d2f7c413f9-dirty: Sat Mar 27 15:35:37 
CET 2021

The fix had been committed some 9 days before that kernel was built.

> However, there is a long standing performance bug where if vnode limit
> is hit, and there is nothing to reclaim, the code is just going to
> sleep for one second.

There are no log entries that give any hint to what occurred.
But I do assume that these events are not logged ... (?)

Yes, I could have checked that and will do so if the issue occurs
again. I plan to generate more output files in the same way that
triggered the issue yesterday, and since the system is very slow
but still able to execute commands, I can try to debug it, just
have to know where to start looking ...

Thank you for your reply!

Regards, STefan

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