Date: Mon, 03 Aug 2020 19:44:01 +0200 From: "Ronald Klop" <ronald-lists@klop.ws> To: freebsd-arm@freebsd.org, "Josh Howard" <bsd@zeppelin.net> Subject: Re: ARM64 hosts eventually lockup running net-mgmt/unifi Message-ID: <op.0osbjnp5kndu52@sjakie> In-Reply-To: <87zh7bis29.wl-bsd@zeppelin.net> References: <87zh7bis29.wl-bsd@zeppelin.net>
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On Mon, 03 Aug 2020 18:59:26 +0200, Josh Howard <bsd@zeppelin.net> wrote:
> This one has been sort of a pain to narrow down, but on any of:
> RockPro64,
> RockPi4b, or RPI4, if I run net-mgmt/unifi eventually the host just hard
> locks. Nothing over serial, nothing interesting in the logs, no other
> hints,
> so it's not clear what precisely is causing it. For those unfamiliar,
> unifi
> runs both a Java app and a mongodb server. I've tried with openjdk8
> (their
> only supports version) and openjdk11, neither one made any difference.
> I'm
> not totally sure how a userland app like this could cause this to happen,
> but it's getting consistent that it eventually does kill my host.
>
> Any ideas or hints would be great!
I had the same problem. The default amount of nmbclusters is too low. If
they are full the OS becomes very unresponsive.
I run this script hourly. It doubles the amount of nmbclusters if more
than half are occupied.
@hourly bin/nmbclustercheck.sh
[root@rpi3 ~]# more bin/nmbclustercheck.sh
#! /bin/sh
LINE=$( netstat -m | grep "mbuf clusters" | cut -d ' ' -f 1 )
CURRENT=$( echo $LINE | cut -d '/' -f 1 )
MAX=$( echo $LINE | cut -d '/' -f 4 )
if test $CURRENT -gt $(( $MAX / 2 ))
then
NEW_MAX=$(( $MAX * 2 ))
echo Increase kern.upc.nmbclusters from $MAX to $NEW_MAX
sysctl kern.ipc.nmbclusters=$NEW_MAX
fi
Current amount after 14 days of uptime:
[root@rpi3 ~]# sysctl kern.ipc.nmbclusters
kern.ipc.nmbclusters: 19250
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