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2021-01-27 - 08:10

Intel(R) Atom(TM) Processor E3950 @ 1.60GHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -n -p90 -i200 -h400 -a0-2 -t3 -q done
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 50 highest latencies:
System rackdslot6.osadl.org (updated Sat Feb 29, 2020 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16422982232178,46sleep20-21swapper/207:06:212
16424722226180,18sleep30-21swapper/307:08:363
16423722223182,33sleep10-21swapper/107:07:161
16423442219180,31sleep00-21swapper/007:06:560
169781021780,4sleep1164271990cyclictest09:05:091
169781021780,4sleep1164271990cyclictest09:05:081
174402521720,4sleep30-21swapper/310:40:093
16492922580,5sleep11649288-21grep07:20:201
16492922580,5sleep11649288-21grep07:20:191
17061072500,1sleep00-21swapper/009:20:200
16502932480,3sleep20-21swapper/207:25:062
17301392450,1sleep335-21ksoftirqd/310:10:133
17301392450,1sleep335-21ksoftirqd/310:10:133
164272090441,25cyclictest1725710-21/usr/sbin/munin10:00:162
164272090441,25cyclictest1714605-21munin-run09:40:012
164272090436,28cyclictest1670373-21cat08:05:172
164272090430,24cyclictest1738566-21sed10:30:012
164272090420,23cyclictest1691665-21cat08:50:192
164272090420,23cyclictest1691665-21cat08:50:182
164272090411,25cyclictest1792235-21/usr/sbin/munin12:20:162
164272090411,23cyclictest0-21swapper/210:32:272
164272090411,21cyclictest1789583-21awk12:15:112
164272090411,21cyclictest0-21swapper/209:11:352
164272090410,26cyclictest1649461-21chrt07:21:372
164272090410,26cyclictest1649461-21chrt07:21:362
164272090410,25cyclictest1783607-21chrt12:02:552
164272090410,25cyclictest1783607-21chrt12:02:542
164272090410,24cyclictest16470002chrt07:15:242
164272090410,23cyclictest1664985-21/usr/sbin/munin07:55:102
164272090410,23cyclictest1664985-21/usr/sbin/munin07:55:092
164271890418,15cyclictest1721759-21munin-run09:55:020
164272090401,29cyclictest1696872-21chrt09:02:242
164272090401,25cyclictest17692922sleep211:32:222
164272090401,25cyclictest16804032sleep208:28:442
164272090401,24cyclictest1693140-21fw_conntrack08:55:072
164272090401,23cyclictest1730432-21/usr/sbin/munin10:10:162
164272090401,23cyclictest1730432-21/usr/sbin/munin10:10:162
164272090401,23cyclictest16780762sleep208:24:142
164272090400,30cyclictest1663706-21chrt07:52:052
164272090400,25cyclictest1661456-21chrt07:48:372
164272090400,23cyclictest1698700-21/usr/sbin/munin09:05:192
164272090400,23cyclictest1698700-21/usr/sbin/munin09:05:192
164272090400,21cyclictest1687684-21sed08:45:012
164272090400,20cyclictest1772940-21seq11:40:112
164272090391,27cyclictest1776697-21munin-run11:50:002
164272090391,24cyclictest1723138-21/usr/sbin/munin09:55:172
164272090391,23cyclictest1764706-21taskset11:24:272
164272090391,23cyclictest1764706-21taskset11:24:272
164272090391,22cyclictest1735894-21taskset10:22:152
164272090391,22cyclictest1688627-21/usr/sbin/munin08:45:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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