Date: Mon, 3 May 2021 13:14:53 +0200 From: =?UTF-8?Q?Christian_St=c3=a6rk?= <xi@borderworlds.dk> To: freebsd-virtualization@freebsd.org Subject: Re: FreeBSD 13 on bhyve freezes under load Message-ID: <9ddd42be-e316-c813-8132-b7b90b694f34@borderworlds.dk> In-Reply-To: <20210503123144.134c209c@bsd64.grem.de> References: <587b3653-0433-ef46-a53d-d6ab0841f993@borderworlds.dk> <20210503123144.134c209c@bsd64.grem.de>
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Hi Michael, I am not using ZFS and have plenty of free diskspace: Filesystem Size Used Avail Capacity Mounted on /dev/ada0p2 190G 92G 83G 52% / top looks like this on a not-hung system: last pid: 38292; load averages: 0.91, 0.87, 0.88 up 0+01:13:16 13:12:12 32 processes: 2 running, 29 sleeping, 1 zombie CPU: 5.5% user, 0.0% nice, 7.8% system, 7.0% interrupt, 79.7% idle Mem: 59M Active, 3549M Inact, 1090M Wired, 610M Buf, 2250M Free Swap: 24G Total, 24G Free PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 38079 root 1 22 0 99M 43M RUN 0:03 14.02% pkg-static 38285 xi 1 20 0 14M 3612K RUN 0:00 0.10% top 37889 root 1 22 0 15M 3680K nanslp 0:02 0.05% sh 759 root 1 20 0 17M 6200K select 0:04 0.01% tmux 37881 xi 1 20 0 21M 9252K select 0:00 0.00% sshd 600 ntpd 1 20 0 17M 4980K select 0:00 0.00% ntpd 749 xi 1 20 0 21M 8804K select 0:03 0.00% sshd 37882 xi 1 20 0 15M 5584K pause 0:00 0.00% zsh 37603 root 1 20 0 15M 3900K select 0:02 0.00% sh 78529 root 1 26 0 15M 3892K piperd 0:00 0.00% sh 36203 root 1 47 0 23M 10M wait 0:00 0.00% perl 750 xi 1 25 0 15M 5296K pause 0:00 0.00% zsh 542 root 1 20 0 13M 2632K select 0:00 0.00% syslogd 341 root 1 20 0 11M 1424K select 0:00 0.00% devd 753 root 1 20 0 16M 4428K pause 0:00 0.00% csh 37826 root 1 20 0 21M 9228K select 0:00 0.00% sshd 37790 root 1 52 0 15M 3896K wait 0:00 0.00% sh It occurred to me that I could try using ahci-hd instead of virtio-blk, so I am trying that now to see if it makes a difference. Best regards Christian On 5/3/21 12:31 PM, Michael Gmelin wrote: > > > On Mon, 3 May 2021 11:14:45 +0200 > Christian Stærk <xi@borderworlds.dk> wrote: > >> Hello, >> >> I recently upgraded one of my bhyve guests to FreeBSD 13.0-RELEASE. >> The host is running 12.2-RELEASE-p4. >> >> The guest in question is used for building packages with poudriere >> and is always the first one to get upgraded to new releases. >> >> The guest freezes consistently every time poudriere tries to build >> the thunderbird package. Although it is not a complete freeze. It >> responds to ping and programs like top and systat continue updating. >> However, all I/O operations seem to hang. >> >> systat looks like this when it happens: >> https://borderworlds.dk/~xi/FreeBSD%2013%20frozen.png >> <https://borderworlds.dk/~xi/FreeBSD%2013%20frozen.png>; >> >> What is the best way to debug this? > Sharing top output might help (memory/swap and ZFS arc usage). Also, > make sure you're not low on diskspace (these are the two most common > issues I encountered with hanging bhyve VMs - out of non-virtual memory > and out of diskspace of the host machine filesystem). > > Some basic info on the host and your VM configuration might also help > others to reproduce the problem. > > -m >
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