Lethargic rpi3, but seemingly still running

[Robert Crowston]

If you compiled -CURRENT with the default options it will have a bunch of debug enabled including witness. Are you spending a long time in syscalls?

On Thu, Jul 18, 2019 at 04:48, bob prohaska <fbsd at www.zefox.net> wrote:

> I'm playing with an RPI3 running -current at r349989 and trying to build
> a port (firefox) with the ports tree at (....long delay to svnlite info
> command.....) 506825 using portmaster under the portmaster-devel script.
>
> The system is still running and mostly idle, as reported by top:
>
> last pid: 8739; load averages: 0.00, 0.02, 0.00 up 1+12:03:29 20:29:20
> 36 processes: 1 running, 35 sleeping
> CPU: 0.0% user, 0.0% nice, 0.1% system, 0.1% interrupt, 99.8% idle
> Mem: 22M Active, 720M Inact, 2324K Laundry, 137M Wired, 57M Buf, 27M Free
> Swap: 6349M Total, 23M Used, 6326M Free
>
> PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAN
> 8374 root 1 26 0 27M 9160K biord 1 1:21 0.00% bsdtar
> 8739 root 1 21 0 21M 8108K sbwait 3 0:00 0.00% sshd
> 21314 bob 1 20 0 14M 1120K CPU2 2 3:44 0.20% top
> 21512 bob 1 21 0 13M 1108K ttyin 1 0:00 0.00% tcsh
> 970 root 1 20 0 16M 848K select 0 0:09 0.02% sendma
> 957 root 1 21 0 20M 688K select 0 0:05 0.00% sshd
> 38012 root 1 52 0 15M 656K wait 2 0:58 0.00% bash
> 973 smmsp 1 20 0 16M 548K pause 3 0:00 0.00% sendma
> 2036 bob 1 20 0 22M 544K select 1 0:22 0.02% sshd
> 977 root 1 20 0 12M 412K nanslp 0 0:03 0.00% cron
> 21511 bob 1 20 0 22M 408K select 0 0:00 0.00% sshd
> 826 root 1 20 0 11M 404K select 3 0:03 0.00% syslog
> 2001 bob 1 20 0 22M 244K select 1 0:04 0.00% sshd
> 2007 root 1 20 0 14M 140K pause 2 0:00 0.00% csh
>
> Every once in a while bsdtar will use a fraction of a percent of cpu, but
> that seems to be all that's happening. The timestamp updates every other
> second, typing echoes as expected but something like pwd takes twenty
> seconds to answer. The controlling terminal for portmaster-devel has been
> sitting at
>
> => SHA256 Checksum OK for rust/2019-05-23/cargo-0.36.0-aarch64-unknown-freebsd.tar.gz.
> for about two hours.
>
> There are sporadic reports of
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 516, size: 4096
> on the console, but they're sparse. At least according to top there's
> no significant swap usage.
>
> This behavior isn't entirely new, but this is the first time it's been
> bad enough to seem worth reporting. The filesystem is 74% full, so it's
> not out of storage:
> Filesystem 1K-blocks Used Avail Capacity Mounted on
> /dev/ufs/rootfs 116766684 78989800 28435552 74% /
> devfs 1 1 0 100% /dev
> /dev/msdosfs/MSDOSBOOT 51096 13552 37544 27% /boot/msdos
>
> Meanwhile an RPI2 running 11.3-BETA1 #0 r348441 is happily grinding away
> on the same problem with ports at 506786. It answered svnlite info /usr/ports
> in less than a second.
>
> Thanks for reading, and any thoughts.
>
> bob prohaska
>
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