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2026-03-23 - 17:18
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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 rack5slot2.osadl.org (updated Mon Mar 23, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
233872236221,10sleep10-21swapper/107:06:111
235872197180,12sleep00-21swapper/007:08:460
236622187170,12sleep30-21swapper/307:09:463
234702184167,12sleep20-21swapper/207:07:162
138642430,0sleep20-21swapper/210:09:562
57962120,0sleep35798-21sh10:05:193
234452100,0sleep30-21swapper/312:05:133
238589991,4cyclictest8824-21basename10:55:010
16300290,0sleep30-21swapper/307:55:163
238589960,6cyclictest0-21swapper/011:22:180
238589960,5cyclictest0-21swapper/012:15:120
238589960,5cyclictest0-21swapper/008:50:120
31993250,0sleep10-21swapper/111:37:381
31566250,0sleep10-21swapper/109:46:211
238679953,1cyclictest9057-21ssh10:55:013
238679950,5cyclictest27152-21sh12:39:313
238679950,5cyclictest17316-21apt-get09:40:013
238679950,5cyclictest0-21swapper/312:24:143
238679950,5cyclictest0-21swapper/312:12:093
238679950,5cyclictest0-21swapper/309:22:133
238679950,0cyclictest2907-21ssh11:07:243
238679950,0cyclictest0-21swapper/310:01:553
238619955,0cyclictest0-21swapper/211:27:382
238619955,0cyclictest0-21swapper/211:17:522
238619955,0cyclictest0-21swapper/210:51:422
238619954,1cyclictest31-21ksoftirqd/207:50:012
238619953,1cyclictest21886-21diskstats10:45:112
238619950,5cyclictest4022-21ssh09:17:332
238619950,5cyclictest0-21swapper/211:12:382
238619950,5cyclictest0-21swapper/207:24:292
238619950,4cyclictest0-21swapper/209:36:582
238619950,0cyclictest0-21swapper/211:07:242
238599950,5cyclictest0-21swapper/111:23:371
238599950,5cyclictest0-21swapper/111:19:071
238599950,5cyclictest0-21swapper/110:32:421
238599950,3cyclictest0-21swapper/108:40:121
238599950,0cyclictest0-21swapper/112:37:161
238589955,0cyclictest19873-21diskmemload12:13:400
238589950,5cyclictest0-21swapper/011:39:360
238589950,5cyclictest0-21swapper/010:47:060
238589950,5cyclictest0-21swapper/009:25:460
238589950,5cyclictest0-21swapper/008:15:020
238589950,5cyclictest0-21swapper/008:15:010
238589950,4cyclictest0-21swapper/010:30:100
238589950,1cyclictest32160-21awk07:25:000
238589950,1cyclictest26223-21munin-run07:15:000
238589950,0cyclictest0-21swapper/011:08:020
238679944,0cyclictest7879-21ssh09:19:523
238679944,0cyclictest26441-21kworker/3:108:59:363
238679944,0cyclictest26441-21kworker/3:108:26:013
238679944,0cyclictest26441-21kworker/3:107:52:243
238679944,0cyclictest26441-21kworker/3:107:41:163
238679944,0cyclictest0-21swapper/311:42:283
238679943,1cyclictest7083-21/usr/sbin/munin09:35:163
238679943,1cyclictest6120-21cut11:25:133
238679943,1cyclictest25513-21tr08:15:113
238679943,1cyclictest25513-21tr08:15:113
238679943,1cyclictest2420-21/usr/sbin/munin07:30:153
238679943,1cyclictest23574-21tail08:10:133
238679942,2cyclictest0-21swapper/309:45:183
238679942,1cyclictest24362-21ssh09:27:223
238679941,2cyclictest0-21swapper/308:45:113
238679940,4cyclictest8218-21apt-get12:30:103
238679940,4cyclictest30247-21apt-get12:25:003
238679940,4cyclictest27795-21apt-get08:20:123
238679940,3cyclictest809-21runrttasks07:35:013
238679940,3cyclictest7962-21sh10:22:223
238679940,3cyclictest26433-21munin-node07:15:003
238679940,3cyclictest26013-21chrt11:35:033
238679940,3cyclictest21769-21latency_hist12:04:593
238679940,3cyclictest20335-21sshd08:05:023
238679940,3cyclictest14891-21perl11:45:153
238679940,3cyclictest10242-21perl10:55:143
238679940,1cyclictest5264-21/usr/sbin/munin08:40:153
238679940,1cyclictest32729-21/usr/sbin/munin08:30:143
238679940,1cyclictest25507-21perl10:15:153
238679940,1cyclictest15122-21diskstats10:10:133
238679940,0cyclictest57250irq/130-eth009:12:103
238679940,0cyclictest0-21swapper/309:58:093
238619944,0cyclictest0-21swapper/212:05:182
238619944,0cyclictest0-21swapper/210:30:102
238619944,0cyclictest0-21swapper/209:12:102
238619944,0cyclictest0-21swapper/208:55:332
238619943,1cyclictest636-21ssh10:35:042
238619943,1cyclictest5457-21cut07:35:142
238619943,1cyclictest5277-21ssh11:56:052
238619943,1cyclictest4110-21sed10:20:192
238619943,1cyclictest31-21ksoftirqd/211:00:112
238619943,1cyclictest13198-21ssh09:21:502
238619943,1cyclictest11623-21ssh10:55:222
238619943,1cyclictest0-21swapper/207:58:572
238619942,1cyclictest5774-21ssh09:34:322
238619942,1cyclictest32430-21ssh12:10:102
238619942,1cyclictest24677-21ssh10:15:072
238619941,2cyclictest1192-21ntpq07:25:182
238619940,4cyclictest30497-21apt-get12:25:112
238619940,4cyclictest15170-21apt-get09:00:122
238619940,4cyclictest1396-21ssh10:03:332
238619940,4cyclictest11378-21grep10:40:112
238619940,4cyclictest0-21swapper/212:35:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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