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2022-07-05 - 20:29

x86 Intel Atom E3950 @1600 MHz, Linux 5.6.19-rt12 (Profile)

Latency plot of system in rack #9, slot #2
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 -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 100 highest latencies:
System rack9slot2 (updated Tue Jul 05, 2022 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
173942300262,25sleep30-21swapper/33
173542246183,50sleep00-21swapper/00
158232231189,16sleep10-21swapper/11
157172228190,25sleep20-21swapper/22
2019821250,4sleep01761799cyclictest0
72182590,5sleep113507-21cups-browsed1
145002500,2sleep10-21swapper/11
89402410,1sleep10-21swapper/11
249562320,1sleep20-21swapper/22
249562320,1sleep20-21swapper/22
1761799318,4cyclictest9-21ksoftirqd/00
1762599281,24cyclictest322-21systemd-journal2
17617992711,4cyclictest9-21ksoftirqd/00
17625992613,12cyclictest28-21ksoftirqd/22
1762599261,22cyclictest13919-21sh2
17617992517,5cyclictest505-21dbus-daemon0
17617992511,6cyclictest9-21ksoftirqd/00
1761799251,11cyclictest158012aten2_r9power_v0
17630992417,4cyclictest19402-21grep3
1761799245,4cyclictest9-21ksoftirqd/00
1761799245,4cyclictest9-21ksoftirqd/00
1761799243,3cyclictest111rcu_preempt0
17617992415,5cyclictest19477-21idleruntime-cro0
17617992412,4cyclictest9-21ksoftirqd/00
17630992316,4cyclictest322-21systemd-journal3
17630992316,4cyclictest19095-21sh3
1762599234,17cyclictest13145-21latency_hist2
17625992317,4cyclictest16392-21processes2
17621992317,4cyclictest28539-21idleruntime-cro1
1761799238,3cyclictest9-21ksoftirqd/00
17630992216,4cyclictest5546-21sh3
17630992214,5cyclictest505-21dbus-daemon3
1762599227,13cyclictest31056-21memory2
1762599223,4cyclictest530-21rs:main2
1762599223,4cyclictest530-21rs:main2
1762599223,17cyclictest3565-21latency_hist2
1762599221,19cyclictest17441-1kworker/2:2H2
1762599221,18cyclictest17729-21tr2
1761799228,4cyclictest9-21ksoftirqd/00
1761799227,4cyclictest9-21ksoftirqd/00
1761799226,4cyclictest9-21ksoftirqd/00
17617992217,3cyclictest9-21ksoftirqd/00
17617992217,3cyclictest9-21ksoftirqd/00
17617992216,3cyclictest27495-21grep0
17617992215,4cyclictest9509-21sh0
17617992213,3cyclictest9-21ksoftirqd/00
17617992210,3cyclictest125742ntp_offset0
17630992116,3cyclictest7449-21/usr/sbin/munin3
17630992115,4cyclictest35-21ksoftirqd/33
1762599213,16cyclictest24126-21sed2
1762599212,17cyclictest9484-21cat2
1762599212,17cyclictest32486-21latency_hist2
1762599212,17cyclictest28657-21cat2
17625992116,3cyclictest10009-21rt-features2
17625992114,4cyclictest27763-21sh2
1762599211,3cyclictest25344-21munin-run2
1762599211,18cyclictest23376-21munin-run2
1762599211,18cyclictest23376-21munin-run2
1762599211,17cyclictest30059-21munin-run2
1762599211,17cyclictest15332-21cat2
1762599210,19cyclictest8741-21munin-run2
17621992116,3cyclictest1612-21unixbench_singl1
17617992115,4cyclictest6448-21seq0
17617992115,3cyclictest9-21ksoftirqd/00
17617992115,3cyclictest9-21ksoftirqd/00
17617992110,3cyclictest9-21ksoftirqd/00
17630992015,3cyclictest27670-21ntp_states3
17630992015,3cyclictest14249-21idleruntime3
17630992015,3cyclictest10277-21awk3
17630992014,4cyclictest30067-21cron3
17630992014,4cyclictest25374-21idleruntime-cro3
17630992014,4cyclictest22715-21sed3
17630992014,4cyclictest22715-21sed3
17630992014,4cyclictest19497-21perf3
17630992013,4cyclictest322-21systemd-journal3
17630992013,4cyclictest322-21systemd-journal3
17630992012,5cyclictest505-21dbus-daemon3
17625992015,3cyclictest6517-21swap2
17625992015,3cyclictest4712-21gltestperf2
17625992015,3cyclictest4634-21ntp_kernel_err2
17625992015,3cyclictest3589-21aten2_r9power_p2
17625992015,3cyclictest29906-21expr2
17625992015,3cyclictest29458-21latency2
17625992015,3cyclictest24486-21entropy2
17625992015,3cyclictest20182-21idleruntime2
17625992014,4cyclictest8831-21cat2
17625992014,4cyclictest530-21rs:main2
1762599201,17cyclictest29860-21cat2
17621992016,2cyclictest12184-21/usr/sbin/munin1
17621992015,3cyclictest32295-21find1
17621992015,3cyclictest19183-21seq1
17621992015,3cyclictest1835-21/usr/sbin/munin1
17621992015,3cyclictest10159-21df1
17621992014,4cyclictest31995-21seq1
17621992014,4cyclictest27882-21seq1
17621992014,4cyclictest23709-21seq1
17621992014,4cyclictest21728-21seq1
17621992013,4cyclictest7355-21expr1
17621992013,4cyclictest17879-21idleruntime1
1761799208,2cyclictest9-21ksoftirqd/00
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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