Hi,
I have an old Soekris system with 64MB memory that I upgraded from 10.3 to 11.1
recently. Since then it?s started hanging every few days.
Today I happened to have a ?top? instance running on the serial console. The
system is minimally responsive to the network (ICMP and CARP are working, but no
services).
From the top output it?s not clear what resource it?s out of. There?s no swap
configured, but that what it looks like it?s trying to do?
The ?pf purge? process is suspicious. There are no pf rules configured on the
system (it should be all disabled).
Any suggestions? (Other than ?seriously ? 64MB memory?!?).
Ask
last pid: 2228; load averages: 0.63, 0.65, 0.70 up 0+21:13:56 04:50:47
36 processes: 2 running, 33 sleeping, 1 waiting
CPU: 0.1% user, 0.0% nice, 11.3% system, 2.4% interrupt, 86.2% idle
Mem: 1616K Active, 10M Inact, 28M Wired, 3099K Buf, 1768K Free
Swap:
PID UID THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
11 0 1 155 ki31 0K 8K RUN 16.8H 75.53% idle
0 0 7 -16 - 0K 64K swapin 155:10 12.00% kernel
16 0 3 -16 - 0K 24K psleep 10:04 8.15% pagedaemon
12 0 14 -64 - 0K 112K WAIT 27:21 2.80% intr
6 0 1 -16 - 0K 8K pftm 8:56 0.73% pf purge
1027 0 1 20 0 7272K 1140K RUN 6:04 0.52% top
7 0 1 -16 - 0K 8K - 2:57 0.18% rand_harvestq
21 0 1 16 - 0K 8K syncer 0:22 0.05% syncer
22 0 1 21 - 0K 8K vlruwt 0:07 0.01% vnlru
19 0 1 20 - 0K 8K psleep 0:08 0.01% bufdaemon
788 0 1 20 0 5920K 1752K select 0:04 0.01% syslogd
20 0 1 20 - 0K 8K - 0:07 0.01% bufspacedaemon
911 0 1 20 0 8816K 8844K kmem a 43:41 0.00% ntpd
996 0 1 20 0 13628K 4620K kmem a 0:06 0.00% sshd
985 0 1 20 0 5952K 584K kmem a 0:07 0.00% cron
709 0 1 20 0 7300K 3364K kmem a 0:01 0.00% devd
2227 0 1 24 0 5952K 1232K kmem a 0:00 0.00% cron
12.02.2018 11:56, Ask Bj?rn Hansen ?????:> Hi, > > I have an old Soekris system with 64MB memory that I upgraded from 10.3 to 11.1 recently. Since then it?s started hanging every few days. > > Today I happened to have a ?top? instance running on the serial console. The system is minimally responsive to the network (ICMP and CARP are working, but no services). > >>From the top output it?s not clear what resource it?s out of.I suspect it is out of many types of kernel memory including mbuf clusters, hence no working TCP/UDP but ICMP works.> There?s no swap configured, but that what it looks like it?s trying to do? > > The ?pf purge? process is suspicious. There are no pf rules configured on the system (it should be all disabled). > > Any suggestions? (Other than ?seriously ? 64MB memory?!?).Please show output of commands: grep memory /var/run/dmesg.boot top -ores -d1 sysctl kern.ipc.nmbclusters It would be also very useful to obtain output of "vmstat -z" in a moment of breakage.
Hi, I do not know if this helps here. I faced also memory problems on the older Raspberry generations. Enabling swap helped even with no swap in use. Maybe, you also try it. Erich On Sun, 11 Feb 2018 20:56:02 -0800 Ask Bj?rn Hansen <ask at develooper.com> wrote:> Hi, > > I have an old Soekris system with 64MB memory that I upgraded from > 10.3 to 11.1 recently. Since then it?s started hanging every few days. > > Today I happened to have a ?top? instance running on the serial > console. The system is minimally responsive to the network (ICMP and > CARP are working, but no services). > > From the top output it?s not clear what resource it?s out of. > There?s no swap configured, but that what it looks like it?s trying > to do? > > The ?pf purge? process is suspicious. There are no pf rules > configured on the system (it should be all disabled). > > Any suggestions? (Other than ?seriously ? 64MB memory?!?). > > > Ask > > > last pid: 2228; load averages: 0.63, 0.65, 0.70 up > 0+21:13:56 04:50:47 36 processes: 2 running, 33 sleeping, 1 > waiting CPU: 0.1% user, 0.0% nice, 11.3% system, 2.4% interrupt, > 86.2% idle Mem: 1616K Active, 10M Inact, 28M Wired, 3099K Buf, 1768K > Free Swap: > > PID UID THR PRI NICE SIZE RES STATE TIME WCPU > COMMAND 11 0 1 155 ki31 0K 8K RUN 16.8H 75.53% > idle 0 0 7 -16 - 0K 64K swapin 155:10 12.00% > kernel 16 0 3 -16 - 0K 24K psleep 10:04 8.15% > pagedaemon 12 0 14 -64 - 0K 112K WAIT 27:21 > 2.80% intr 6 0 1 -16 - 0K 8K pftm 8:56 > 0.73% pf purge 1027 0 1 20 0 7272K 1140K RUN > 6:04 0.52% top 7 0 1 -16 - 0K 8K - > 2:57 0.18% rand_harvestq 21 0 1 16 - 0K 8K > syncer 0:22 0.05% syncer 22 0 1 21 - 0K 8K > vlruwt 0:07 0.01% vnlru 19 0 1 20 - 0K 8K > psleep 0:08 0.01% bufdaemon 788 0 1 20 0 5920K > 1752K select 0:04 0.01% syslogd 20 0 1 20 - > 0K 8K - 0:07 0.01% bufspacedaemon 911 0 1 > 20 0 8816K 8844K kmem a 43:41 0.00% ntpd 996 0 1 > 20 0 13628K 4620K kmem a 0:06 0.00% sshd 985 0 1 > 20 0 5952K 584K kmem a 0:07 0.00% cron 709 0 1 > 20 0 7300K 3364K kmem a 0:01 0.00% devd 2227 0 1 > 24 0 5952K 1232K kmem a 0:00 0.00% cron > _______________________________________________ > freebsd-stable at freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable To > unsubscribe, send any mail to "freebsd-stable-unsubscribe at freebsd.org"