Server gets a high load, but no CPU use, and then later stops respond on the network
Руслан Бурханов
r100500b at gmail.com
Wed Sep 21 09:16:31 UTC 2016
I have same problem with ipfw nat and shaping with dummynet module. Can you
post you firewall settings?
2016-09-21 12:14 GMT+03:00 Руслан Бурханов <r100500b at gmail.com>:
> I have same problem with ipfw nat and shaping with dummynet module. Can
> you post you firewall settings?
>
> 2016-09-21 10:35 GMT+03:00 Michael Schuster <michaelsprivate at gmail.com>:
>
>> Hi,
>>
>> While I'm not very familiar with FreeBSD internals, I'd like to point out
>> two things that I think may be relevant:
>>
>> 1) note that '[idle]' seems to be the only thread/process doing
>> significant
>> work - at a guess, I'd say that's the kernel doing work that cannot be
>> ascribed to anything else ... housekeeping? (someone who knows FreeBSD
>> better will have to answer that)
>>
>> On Wed, Sep 14, 2016 at 1:23 AM, Stxe5le Bordal Kristoffersen <
>> chiller at putsch.kolbu.ws> wrote:
>>
>> > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
>> > COMMAND
>> > 11 root 24 155 ki31 0K 384K CPU23 23 1206.3 2396.63%
>> > [idle]
>> > 5 root 1 -16 - 0K 16K ipmire 14 100:17 0.00%
>> > [ipmi0: kcs]
>> > 0 root 407 -8 - 0K 6512K - 22 56:20 0.00%
>> > [kernel]
>> > 7 root 2 -16 - 0K 32K umarcl 3 6:21 0.00%
>> > [pagedaemon]
>> > 18 root 1 16 - 0K 16K syncer 14 3:37 0.00%
>> > [syncer]
>> > 12 root 38 -76 - 0K 608K WAIT 255 3:04 0.00%
>> > [intr]
>> > 2 root 6 -16 - 0K 96K - 0 2:41 0.00%
>> > [cam]
>> > 14 root 1 -16 - 0K 16K - 16 1:40 0.00%
>> > [rand_harvestq]
>> > 3 root 9 -8 - 0K 176K tx->tx 20 1:13 0.00%
>> > [zfskern]
>> > 17 root 1 -16 - 0K 16K vlruwt 13 1:10 0.00%
>> > [vnlru]
>> > 762 root 1 20 0 50040K 15212K select 18 0:10 0.00%
>> > /usr/local/bin/perl -wT /usr/local/sbin/munin-node
>> > 620 root 1 20 0 14520K 2044K select 20 0:06 0.00%
>> > /usr/sbin/syslogd -s
>> > 15 root 40 -68 - 0K 640K - 0 0:05 0.00%
>> > [usb]
>> > 686 root 1 20 0 26128K 18044K select 15 0:05 0.00%
>> > /usr/sbin/ntpd -c /etc/ntp.conf -p /var/run/ntpd.pid -f
>> /var/db/ntpd.drift
>> > 823 root 1 20 0 24156K 5420K select 13 0:02 0.00%
>> > sendmail: accepting connections (sendmail)
>> > 6 root 1 -16 - 0K 16K idle 16 0:02 0.00%
>> > [enc_daemon0]
>> > 16 root 1 -16 - 0K 16K psleep 19 0:00 0.00%
>> > [bufdaemon]
>> > 830 root 1 20 0 16624K 712K nanslp 16 0:00 0.00%
>> > /usr/sbin/cron -s
>> > 826 smmsp 1 20 0 24156K 1056K pause 23 0:00 0.00%
>> > sendmail: Queue runner at 00:30:00 for /var/spool/clientmqueue (sendmail)
>> > 52778 chiller 1 20 0 31060K 5356K pause 23 0:00 0.00%
>> > -zsh (zsh)
>> > 800 root 1 20 0 61316K 5164K select 17 0:00 0.00%
>> > /usr/sbin/sshd
>> > 1 root 1 20 0 9492K 460K wait 22 0:00 0.00%
>> > [init]
>> > 54395 chiller 1 23 0 31060K 5388K pause 23 0:00 0.00%
>> > -zsh (zsh)
>> > 52777 chiller 1 20 0 86584K 7576K select 23 0:00 0.00%
>> > sshd: chiller at pts/0 (sshd)
>> > 54394 chiller 1 20 0 86584K 7616K select 19 0:00 0.00%
>> > sshd: chiller at pts/1 (sshd)
>> > 473 root 1 20 0 13628K 4504K select 22 0:00 0.00%
>> > /sbin/devd
>> > 54441 root 1 20 0 24392K 4064K pause 15 0:00 0.00%
>> -su
>> > (zsh)
>> > 52774 root 1 20 0 86584K 7532K select 19 0:00 0.00%
>> > sshd: chiller [priv] (sshd)
>> > 54050 root 1 20 0 24392K 4064K ttyin 20 0:00 0.00%
>> -su
>> > (zsh)
>> > 13 root 3 -8 - 0K 48K - 4 0:00 0.00%
>> > [geom]
>> > 54389 root 1 20 0 86584K 7568K select 13 0:00 0.00%
>> > sshd: chiller [priv] (sshd)
>> >
>> > [...]
>> >
>> >
>> 2) look at 'sr' (using a fixed-width font probably helps). In Solaris
>> (which is where I come from ... a long time ago ;-)) this is "scan rate",
>> ie the number of pages (per second) the paging mechanism is looking at -
>> (again on Solaris) this would mean that your system is under some kind of
>> fairly constant memory pressure - where from I cannot even guess, and
>> given
>> the "avm" and "fre" columns, this does look very strange ... but that's
>> what I'd continue my investigation with.
>>
>> pusen# vmstat 1
>> > procs memory page disks faults
>> > cpu
>> > r b w avm fre flt re pi po fr sr da0 da1 in sy cs
>> > us sy id
>> > 0 0 0 858M 1449M 335 0 0 1 355 4954 0 0 1917 4403
>> 5302
>> > 0 0 99
>> > 0 0 0 858M 1449M 0 0 0 0 0 265 0 0 1 120 80
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 265 0 0 0 124 81
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 265 0 0 1 120 68
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 265 0 0 1 127 92
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 265 0 0 0 120 91
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 265 0 0 1 121 82
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 265 0 0 0 120 75
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 265 0 0 2 121 96
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 265 0 0 1 126 83
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 217 0 0 1 121 68
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 215 0 0 1 120 88
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 215 0 0 0 121 92
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 215 0 0 0 120 83
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 215 0 0 1 127 90
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 196 0 0 5 120 94
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 196 0 0 1 121 80
>> > 0 0 100
>> > 0 0 0 858M 1449M 0 0 0 0 0 196 0 0 0 123 79
>> > 0 0 100
>> > 1 0 0 858M 1449M 0 0 0 0 0 196 0 0 2 121 76
>> > 0 0 100
>> > 1 0 0 858M 1449M 0 0 0 0 0 196 0 0 4 118 106
>> > 0 0 100
>> > 1 0 0 858M 1449M 0 0 0 0 0 196 0 0 0 112 87
>> > 0 0 100
>> >
>>
>> HTH
>> Michael
>> --
>> Michael Schuster
>> http://recursiveramblings.wordpress.com/
>> recursion, n: see 'recursion'
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