Re: "route_enqueue: queue full, dropped message" blast from a 8.99.32 amd64 domU

[Roy Marples <roy%marples.name@localhost>]

On 10/05/2019 00:40, Greg A. Woods wrote:
> [Thu May  9 09:24:08 2019][ 6442662.0806318] route_enqueue: queue 
> full, dropped message
>
> There were thousands of identical lines, all separated by a few 
> microseconds.  No doubt this spew was the real cause of the apparent
>  interrupt storm and the resulting sluggishness.

https://nxr.netbsd.org/xref/src/sys/net/rtsock_shared.c#1602

I would imagine that if an interface is interupting that much then it's 
constantly sending messages to route(4) to say that it's up/down and 
addresses are detached/tentative in a tight loop. The queueing mechanism 
has a fixed length and while we go out of our way to notify userland if 
there's an error sending these messages, we can't send this one at all 
so we just log it.

So it's an artifact of your interupt storm, but not the cause.

Roy