So, I have a server at home that has four VMs running inside it.
All are managed via puppet. The physical host runs puppetmasterd.
I don't recall noticing this before, but puppetmasterd has decided
to be kind of crazy. Here's the physical host with no puppetmasterd
running:
top - 11:36:15 up 271 days, 15:16, 1 user, load average: 5.68, 5.50, 6.45
Tasks: 129 total, 1 running, 128 sleeping, 0 stopped, 0 zombie
Cpu(s): 3.6%us, 1.8%sy, 0.0%ni, 80.4%id, 14.3%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8128776k total, 6991020k used, 1137756k free, 408756k buffers
Swap: 8388604k total, 552356k used, 7836248k free, 185220k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
10296 qemu 20 0 2366m 1.5g 8884 S 6.2 19.6 6:37.65 qemu-kvm
17334 qemu 20 0 2788m 1.7g 544 S 2.7 22.3 4576:25 qemu-kvm
9904 qemu 20 0 2358m 581m 8820 S 0.9 7.3 3:55.78 qemu-kvm
1 root 20 0 46880 8076 1372 S 0.0 0.1 0:27.00 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:10.48 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 322:04.84 ksoftirqd/0
6 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
7 root RT 0 0 0 0 S 0.0 0.0 0:11.57 watchdog/0
8 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/1
10 root 20 0 0 0 0 S 0.0 0.0 551:03.31 ksoftirqd/1
And here it is with puppetmasterd running:
top - 11:25:07 up 271 days, 15:05, 1 user, load average: 12.59, 8.68, 7.05
Tasks: 131 total, 3 running, 128 sleeping, 0 stopped, 0 zombie
Cpu(s): 15.2%us, 36.4%sy, 0.0%ni, 6.6%id, 39.7%wa, 0.0%hi, 2.0%si, 0.0%st
Mem: 8128776k total, 6830276k used, 1298500k free, 381356k buffers
Swap: 8388604k total, 555328k used, 7833276k free, 180096k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
10660 puppet 20 0 214m 107m 4040 S 61.9 1.3 8:46.81 puppetmasterd
3 root 20 0 0 0 0 S 21.4 0.0 320:38.54 ksoftirqd/0
10 root 20 0 0 0 0 R 20.2 0.0 549:30.88 ksoftirqd/1
10296 qemu 20 0 2470m 1.4g 8888 S 13.1 18.1 4:23.70 qemu-kvm
17334 qemu 20 0 2788m 1.7g 540 S 8.3 22.0 4574:54 qemu-kvm
9904 qemu 20 0 2422m 572m 8820 S 3.6 7.2 3:07.15 qemu-kvm
24980 qemu 20 0 1824m 1.4g 612 S 3.6 18.3 15046:11 qemu-kvm
12209 rlpowell 20 0 15256 1228 908 R 1.2 0.0 0:00.04 top
1 root 20 0 46880 7992 1356 S 0.0 0.1 0:26.97 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:10.48 kthreadd
The high CPU use by puppetmasterd is bad enough, but what makes me
be all like "wait, what?" is the ksoftirqd usage.
Puppet master version is 2.16.
This is *without* a client running; there's no traffic on 8140
according to tcpdump, and there's nothing happening in the log.
http://users.digitalkingdom.org/~rlpowell/media/public/puppetmasterd_strace.txt
has strace output; it's pretty boring, but there are a few select
and rt_sigprocmask calls near the bottom.
I'm totally stumped here. Any ideas?
-Robin
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