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2026-01-09 - 06:23
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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 Fri Jan 09, 2026 00:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
183512234219,10sleep10-21swapper/119:05:421
186842192176,11sleep30-21swapper/319:09:583
184342191174,12sleep00-21swapper/019:06:450
186812183167,12sleep20-21swapper/219:09:572
120732450,0sleep30-21swapper/323:28:393
278152420,0sleep10-21swapper/122:49:131
188032420,0sleep10-21swapper/122:45:011
269252390,0sleep00-21swapper/020:30:000
23102380,0sleep10-21swapper/123:55:141
291442100,0sleep30-21swapper/321:16:153
19222100,0sleep30-21swapper/322:36:053
4114290,0sleep20-21swapper/223:09:082
22838280,0sleep00-21swapper/021:13:510
188889970,7cyclictest0-21swapper/323:20:093
188849964,0cyclictest31-21ksoftirqd/221:10:102
188849960,6cyclictest8323-21ntp_states20:55:162
188849960,5cyclictest0-21swapper/220:40:112
188849960,1cyclictest31-21ksoftirqd/222:35:112
188789961,3cyclictest0-21swapper/120:40:101
188789961,3cyclictest0-21swapper/119:40:101
18182260,1sleep00-21swapper/000:35:100
28201250,0sleep30-21swapper/322:49:273
188889951,2cyclictest0-21swapper/320:20:103
188889950,5cyclictest14256-21diskmemload22:20:133
188889950,5cyclictest0-21swapper/321:55:373
188889950,4cyclictest0-21swapper/323:00:103
188849955,0cyclictest0-21swapper/223:03:282
188849954,1cyclictest31-21ksoftirqd/222:05:142
188849954,1cyclictest31-21ksoftirqd/219:35:112
188849951,2cyclictest0-21swapper/219:55:102
188849950,5cyclictest19351-21ssh21:58:122
188849950,5cyclictest0-21swapper/221:26:252
188849950,4cyclictest0-21swapper/223:15:112
188849950,0cyclictest0-21swapper/222:41:552
188789951,2cyclictest0-21swapper/123:25:111
188789951,2cyclictest0-21swapper/121:00:101
188789950,0cyclictest0-21swapper/123:30:111
188749955,0cyclictest1044-21kworker/0:023:02:150
188749955,0cyclictest1044-21kworker/0:022:39:550
188749955,0cyclictest1044-21kworker/0:022:28:410
188749955,0cyclictest1044-21kworker/0:022:06:170
188749955,0cyclictest1044-21kworker/0:020:59:060
188749955,0cyclictest1044-21kworker/0:000:09:260
188749953,1cyclictest2986-21ssh23:40:120
188749950,5cyclictest14256-21diskmemload23:05:120
188749950,0cyclictest0-21swapper/023:52:360
188889944,0cyclictest0-21swapper/319:25:183
188889943,1cyclictest7535-21latency_hist00:30:003
188889943,1cyclictest16240-21grep21:10:163
188889942,1cyclictest30410-21ssh21:47:533
188889941,3cyclictest728-21snmpd19:42:413
188889941,3cyclictest30645-21cat22:50:153
188889941,3cyclictest23508-21cron21:45:013
188889941,2cyclictest0-21swapper/323:35:113
188889941,2cyclictest0-21swapper/320:50:113
188889941,2cyclictest0-21swapper/320:05:113
188889941,2cyclictest0-21swapper/319:35:113
188889941,1cyclictest0-21swapper/321:00:103
188889941,1cyclictest0-21swapper/319:30:103
188889940,4cyclictest32001-21apt-get00:10:133
188889940,4cyclictest2977-21apt-get23:40:123
188889940,4cyclictest28266-21sh21:31:063
188889940,4cyclictest23443-21apt-get23:50:113
188889940,4cyclictest10352-21diskmemload21:38:323
188889940,4cyclictest0-21swapper/323:55:113
188889940,4cyclictest0-21swapper/323:30:113
188889940,4cyclictest0-21swapper/323:13:293
188889940,4cyclictest0-21swapper/322:40:113
188889940,4cyclictest0-21swapper/322:15:123
188889940,4cyclictest0-21swapper/321:50:133
188889940,4cyclictest0-21swapper/321:26:213
188889940,4cyclictest0-21swapper/321:20:123
188889940,4cyclictest0-21swapper/320:55:103
188889940,4cyclictest0-21swapper/320:45:233
188889940,4cyclictest0-21swapper/320:10:113
188889940,4cyclictest0-21swapper/319:10:103
188889940,4cyclictest0-21swapper/300:30:113
188889940,4cyclictest0-21swapper/300:09:003
188889940,3cyclictest30471-21cat22:35:003
188889940,3cyclictest30284-21perl20:35:133
188889940,3cyclictest29424-21memory23:05:153
188889940,3cyclictest22739-21diskstats19:15:133
188889940,3cyclictest22131-21cat20:20:013
188889940,3cyclictest18219-21ssh00:35:093
188889940,3cyclictest14256-21diskmemload00:15:013
188889940,3cyclictest13199-21ssh23:45:113
188889940,3cyclictest11290-21/usr/sbin/munin22:10:193
188849944,0cyclictest0-21swapper/223:46:392
188849944,0cyclictest0-21swapper/223:22:052
188849943,1cyclictest5734-21head21:20:212
188849943,1cyclictest31-21ksoftirqd/223:55:112
188849943,1cyclictest31-21ksoftirqd/220:45:122
188849942,1cyclictest25230-21diskstats19:20:122
188849941,3cyclictest0-21swapper/200:15:172
188849941,2cyclictest0-21swapper/200:10:122
188849940,4cyclictest0-21swapper/223:35:012
188849940,4cyclictest0-21swapper/223:29:572
188849940,4cyclictest0-21swapper/223:10:102
188849940,4cyclictest0-21swapper/222:50:122
188849940,4cyclictest0-21swapper/222:29:422
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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