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2026-06-28 - 06:56
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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 rackfslot7.osadl.org (updated Sun Jun 28, 2026 00:46:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36094159910829,39cyclictest3769410-21/usr/sbin/munin00:00:144
36094159910829,39cyclictest3769410-21/usr/sbin/munin00:00:134
3609415998627,20cyclictest3709656-21perl22:10:144
3609415997333,40cyclictest0-21swapper/419:35:394
3609415997314,19cyclictest3688608-21ps21:30:194
3609415996928,19cyclictest3721274-21ntp_states22:30:184
3609415996730,37cyclictest225-1kworker/4:1H+kblockd21:13:004
360941599601,20cyclictest3756025-21cpuspeed_turbos23:35:144
360941199602,39cyclictest16-21ksoftirqd/023:55:160
3609415995920,0cyclictest3687127-21systemctl21:30:024
3609415995819,18cyclictest0-21swapper/423:45:134
360941599580,57cyclictest0-21swapper/400:10:134
3609415995739,18cyclictest875-21mta-sts-daemon00:05:484
3609415995719,19cyclictest3696217-21if_err_eno121:45:164
3609415995718,19cyclictest3723764-21memory22:35:174
360941599570,57cyclictest3729434-21awk22:45:194
3609415995617,20cyclictest3612039-21munin-plugin-st19:15:004
3609415995614,40cyclictest1-21systemd20:10:064
360941599560,16cyclictest0-21swapper/421:36:144
360941199560,37cyclictest0-21swapper/019:35:170
3609415995538,17cyclictest601ktimers/421:09:164
3609415995516,39cyclictest601ktimers/423:51:224
3609415995514,19cyclictest3694083-21grep21:40:214
3609415995514,19cyclictest0-21swapper/423:40:224
3609415995416,38cyclictest3704190-21perl22:00:164
3609415995415,19cyclictest3718677-21ps22:25:214
3609415995414,19cyclictest0-21swapper/422:57:304
360941599540,15cyclictest0-21swapper/421:58:044
3609414995416,19cyclictest3725059-21kworker/3:223:00:083
3609415995314,39cyclictest3642464-21grep20:05:244
3609415995314,19cyclictest0-21swapper/423:05:144
3609415995313,19cyclictest3671959-21ps21:00:224
3609415995313,19cyclictest3635863-21lpstat19:55:184
3609415995313,19cyclictest3635863-21lpstat19:55:174
3609415995313,19cyclictest0-21swapper/421:55:014
3609415995313,0cyclictest3746242-21systemctl23:15:224
3609415995233,19cyclictest3715540-21meminfo22:20:184
3609415995233,19cyclictest0-21swapper/420:45:434
3609415995214,38cyclictest0-21swapper/423:25:044
3609415995214,19cyclictest1-21systemd21:00:014
3609415995213,39cyclictest0-21swapper/419:15:174
3609415995213,19cyclictest0-21swapper/422:05:134
3609415995213,19cyclictest0-21swapper/419:45:024
3609415995212,19cyclictest0-21swapper/420:35:024
3609415995211,19cyclictest3653747-21latency_hist20:30:014
3609415995210,20cyclictest3731789-21if_err_enxbe3af22:50:184
3609413995214,19cyclictest0-21swapper/223:30:162
3609415995112,39cyclictest0-21swapper/423:32:254
3609415995112,39cyclictest0-21swapper/422:15:114
3609415995112,19cyclictest0-21swapper/400:25:024
3609415995112,0cyclictest0-21swapper/421:20:144
3609415995112,0cyclictest0-21swapper/419:30:114
3609415995112,0cyclictest0-21swapper/419:30:104
3609413995113,19cyclictest0-21swapper/200:30:162
3609418995013,18cyclictest0-21swapper/723:40:167
3609417995012,19cyclictest0-21swapper/619:10:186
3609415995031,19cyclictest0-21swapper/420:18:044
3609415995012,19cyclictest591rcuc/421:15:154
3609415995011,39cyclictest0-21swapper/419:54:504
3609415995011,39cyclictest0-21swapper/419:54:494
3609415995010,19cyclictest0-21swapper/420:40:014
360941599499,19cyclictest0-21swapper/423:10:174
3609415994931,18cyclictest0-21swapper/420:23:324
3609415994930,19cyclictest0-21swapper/419:28:014
3609415994930,19cyclictest0-21swapper/400:37:354
3609415994928,19cyclictest0-21swapper/400:34:084
3609415994910,19cyclictest0-21swapper/420:00:454
3609413994931,18cyclictest0-21swapper/222:40:162
3609413994910,39cyclictest0-21swapper/222:30:132
3609415994829,19cyclictest0-21swapper/423:02:394
3609415994810,19cyclictest0-21swapper/422:44:544
3609416994728,19cyclictest0-21swapper/522:05:175
360941599478,39cyclictest0-21swapper/419:20:184
360941599478,0cyclictest0-21swapper/423:55:014
360941599477,40cyclictest0-21swapper/420:50:184
360941599477,39cyclictest3749855-21awk23:24:594
360941399479,38cyclictest0-21swapper/223:00:172
360941899468,19cyclictest0-21swapper/720:30:177
360941899468,19cyclictest0-21swapper/700:15:187
3609415994628,18cyclictest0-21swapper/400:17:324
360941399468,19cyclictest0-21swapper/223:10:162
360941199468,19cyclictest0-21swapper/000:10:180
360941899457,19cyclictest0-21swapper/721:00:167
360941599456,19cyclictest0-21swapper/400:20:134
360941599456,0cyclictest0-21swapper/420:40:184
360941599455,19cyclictest0-21swapper/419:40:024
360941599455,19cyclictest0-21swapper/419:40:014
360941799435,19cyclictest0-21swapper/623:35:166
360941199434,39cyclictest0-21swapper/021:35:170
3609418994223,19cyclictest0-21swapper/700:35:147
360941199402,19cyclictest16-21ksoftirqd/020:25:150
3609418993939,0cyclictest0-21swapper/721:30:147
360941899390,0cyclictest0-21swapper/719:30:147
360941899390,0cyclictest0-21swapper/719:30:137
360941399391,19cyclictest0-21swapper/219:10:182
3609418993819,0cyclictest0-21swapper/722:05:167
3609414993820,0cyclictest0-21swapper/323:05:153
360941499380,19cyclictest0-21swapper/321:00:153
3609413993819,0cyclictest0-21swapper/220:10:142
3609417993719,18cyclictest0-21swapper/621:45:156
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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