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2025-11-29 - 01:24
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack9slot2.osadl.org (updated Fri Nov 28, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286462299260,26sleep10-21swapper/11
2882299269264,3cyclictest13886-21idleruntime-cro3
285262266210,44sleep30-21swapper/33
284362261189,24sleep00-21swapper/00
2881499239232,4cyclictest13859-21munin-run1
284332228191,24sleep20-21swapper/22
2880999164157,5cyclictest13878-21perf0
2881799154141,11cyclictest0-21swapper/22
39982680,3sleep10-21swapper/11
81022540,2sleep30-21swapper/33
164932490,2sleep12881499cyclictest1
278182440,1sleep00-21swapper/00
147492430,1sleep00-21swapper/00
301262410,2sleep20-21swapper/22
299432390,2sleep10-21swapper/11
323942350,2sleep30-21swapper/33
2882299320,30cyclictest5220-21kworker/3:03
242762270,4sleep1201rcuc/11
78512260,4sleep27849-21cron2
28822992418,4cyclictest9512-21plymouth3
2881799240,12cyclictest310712timerandwakeup2
28814992419,3cyclictest16001-21idleruntime-cro1
2882299234,8cyclictest35-21ksoftirqd/33
28822992319,3cyclictest25507-21sh3
2881799233,17cyclictest0-21swapper/22
149522230,4sleep114951-21latency_hist1
41402220,2sleep20-21swapper/22
2882299227,12cyclictest12915-21cron3
28822992211,7cyclictest22251-21apt-get3
2881799223,17cyclictest529-21cat2
2881799223,17cyclictest3522-21latency_hist2
2881799222,17cyclictest22746-21cat2
2881799222,17cyclictest13951-21latency_hist2
2881799221,18cyclictest5814-21munin-run2
2881799221,18cyclictest5814-21munin-run2
28814992216,4cyclictest17418-21sed1
28809992216,3cyclictest14567-21uptime0
25412220,1sleep10-21swapper/11
28822992117,2cyclictest4491-21idleruntime-cro3
28822992116,3cyclictest35-21ksoftirqd/33
28822992115,4cyclictest21661-21cut3
28822992114,4cyclictest24842-21date3
2881799213,16cyclictest30849-21awk2
2881799213,16cyclictest29892-21latency_hist2
2881799212,17cyclictest17396-21awk2
28817992116,3cyclictest12631-21switchtime2
28817992116,3cyclictest10877-21sh2
28817992115,4cyclictest30041-21seq2
28817992114,4cyclictest6977-21sed2
2881799211,3cyclictest18104-1kworker/2:2H2
2881799211,18cyclictest18027-21lockfile-remove2
2881799211,18cyclictest11268-21munin-run2
2881799211,17cyclictest26828-21lockfile-remove2
2881799211,17cyclictest19181-21apt-config2
28817992111,5cyclictest22953-21apt-get2
28814992115,4cyclictest5188-21ls1
28809992116,3cyclictest20013-21diskstats0
28809992116,3cyclictest16232-21/usr/sbin/munin0
28809992114,5cyclictest7460-21apt-get0
28809992113,5cyclictest5038-21apt-get0
246192210,1sleep10-21swapper/11
59452200,3sleep30-21swapper/33
2882299202,15cyclictest14446-21cut3
28822992015,3cyclictest5394-21cat3
28822992015,3cyclictest3534-21acpi3
28822992015,3cyclictest2666-21threads3
28822992015,3cyclictest13090-21open_inodes3
2881799207,11cyclictest0-21swapper/22
28817992015,3cyclictest28134-21df2
28817992015,3cyclictest18641-21forks2
28817992015,3cyclictest18030-21apt-get2
28817992015,3cyclictest14221-21sh2
2881799201,4cyclictest9868-21munin-run2
28817992014,4cyclictest28-21ksoftirqd/22
28817992014,4cyclictest28-21ksoftirqd/22
28817992014,4cyclictest26013-21seq2
28817992014,4cyclictest12013-21date2
2881799201,3cyclictest28446-1kworker/2:0H2
2881799201,3cyclictest1762-21perf2
2881799201,17cyclictest3789-21latency_hist2
2881799201,17cyclictest18104-1kworker/2:2H2
2881799201,17cyclictest15395-1kworker/2:0H2
28814992016,2cyclictest8482-21ntp_states1
28814992015,3cyclictest8274-21cpu1
28814992015,3cyclictest7134-21seq1
28814992015,3cyclictest31708-21seq1
28814992015,3cyclictest27620-21sed1
28814992015,3cyclictest21055-21seq1
28814992014,4cyclictest5563-21/usr/sbin/munin1
28814992014,4cyclictest5563-21/usr/sbin/munin1
28814992014,4cyclictest22233-21cat1
28814992014,4cyclictest22233-21cat1
28814992014,4cyclictest21-21ksoftirqd/11
28814992014,4cyclictest12557-21cat1
28814992013,4cyclictest4724-21ls1
28814992013,4cyclictest4724-21ls1
2881499200,18cyclictest13307-21cron1
28809992015,3cyclictest7048-21/usr/sbin/munin0
28809992015,3cyclictest2691-21/usr/sbin/munin0
28809992015,3cyclictest26001-21ps0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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