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2026-01-12 - 07:47
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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 Mon Jan 12, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
283946998325,39cyclictest1087-21snmpd22:34:550
283946998324,39cyclictest291633-21cat19:20:240
283946997921,19cyclictest1087-21snmpd22:35:180
283946997736,39cyclictest1086-21runrttasks23:04:370
283946997536,38cyclictest408924-21cut22:50:130
283946997517,39cyclictest385824-21munin-run22:10:010
283946997315,39cyclictest288363-21ntpq19:15:310
283946997234,38cyclictest0-21swapper/021:58:130
283946997234,38cyclictest0-21swapper/020:15:480
283946997233,18cyclictest171ktimers/022:15:170
283946997230,39cyclictest420102-21/usr/sbin/munin23:10:190
283948997171,0cyclictest0-21swapper/220:00:212
283946996910,39cyclictest386874-21/usr/sbin/munin22:10:140
283946996728,20cyclictest316555-21lpstat20:05:180
28394699650,63cyclictest0-21swapper/021:25:100
28394699613,39cyclictest418606-21ntpq23:05:200
28394699612,39cyclictest0-21swapper/020:31:470
283951995819,38cyclictest0-21swapper/522:10:165
283946995839,18cyclictest171ktimers/021:32:230
283946995839,18cyclictest171ktimers/021:32:220
283946995818,38cyclictest428578-21aten2.4-expect23:25:130
283946995817,39cyclictest406783-21interrupts22:45:180
283946995719,19cyclictest422316-21kworker/0:1+ice23:50:120
283946995718,19cyclictest283572-21kworker/0:2+ice19:35:390
283946995637,19cyclictest350373-21irqstats21:05:170
283946995636,19cyclictest0-21swapper/020:35:250
283946995617,38cyclictest357353-21apt-get21:20:000
283946995616,39cyclictest171ktimers/021:51:490
283946995517,19cyclictest303687-21taskset19:44:100
283946995515,38cyclictest455797-21sed00:10:230
283946995435,18cyclictest0-21swapper/020:13:410
283946995416,19cyclictest283572-21kworker/0:2+ice20:57:250
283946995414,39cyclictest0-21swapper/000:26:220
283948995353,0cyclictest0-21swapper/221:05:162
283946995314,39cyclictest0-21swapper/022:21:110
283946995314,39cyclictest0-21swapper/020:04:510
283946995314,19cyclictest434138-21/usr/sbin/munin23:35:230
283946995313,39cyclictest0-21swapper/023:19:430
28395199529,25cyclictest0-21swapper/519:55:165
283951995214,19cyclictest0-21swapper/520:00:175
283947995214,19cyclictest0-21swapper/121:45:151
283946995232,19cyclictest0-21swapper/023:57:530
283946995232,19cyclictest0-21swapper/022:41:010
283946995232,19cyclictest0-21swapper/022:25:210
283946995213,39cyclictest0-21swapper/021:35:510
283946995212,39cyclictest0-21swapper/021:24:290
283951995113,19cyclictest0-21swapper/520:50:165
283949995113,38cyclictest0-21swapper/300:05:163
283946995132,19cyclictest0-21swapper/020:45:170
283946995131,19cyclictest0-21swapper/020:53:000
283946995131,19cyclictest0-21swapper/019:12:370
283946995113,19cyclictest444664-21kworker/0:0+ice00:20:050
283946995113,19cyclictest426505-21if_eno123:20:140
283946995113,19cyclictest283572-21kworker/0:2+ice22:55:480
283946995112,39cyclictest0-21swapper/000:19:280
283946995112,39cyclictest0-21swapper/000:07:410
283946995111,39cyclictest0-21swapper/019:48:410
283953995012,19cyclictest0-21swapper/722:35:187
283953995010,38cyclictest0-21swapper/719:45:157
283949995012,38cyclictest0-21swapper/323:30:153
283946995032,18cyclictest0-21swapper/021:43:130
283946995032,18cyclictest0-21swapper/021:43:120
283946995032,18cyclictest0-21swapper/000:30:450
283946995031,19cyclictest450254-21sshd00:00:440
283946995030,19cyclictest0-21swapper/019:51:350
283946995012,19cyclictest0-21swapper/019:30:440
283946995010,39cyclictest0-21swapper/020:25:170
28395199499,39cyclictest1086-21runrttasks21:45:165
283946994930,19cyclictest0-21swapper/019:58:210
283946994910,39cyclictest0-21swapper/021:03:110
283946994910,19cyclictest283572-21kworker/0:2+ice20:44:360
283951994810,38cyclictest0-21swapper/521:10:155
283947994810,19cyclictest0-21swapper/123:30:161
28394699488,39cyclictest0-21swapper/020:24:550
283946994810,19cyclictest383023-21/usr/sbin/munin22:05:000
28395099478,39cyclictest0-21swapper/422:46:184
283950994728,19cyclictest0-21swapper/422:50:164
283946994729,18cyclictest0-21swapper/023:40:360
283946994729,18cyclictest0-21swapper/021:48:270
28395099468,19cyclictest304203-21kworker/u32:5+flush-8:019:46:054
28395099466,39cyclictest0-21swapper/421:22:124
28394799457,19cyclictest0-21swapper/100:10:141
28394699457,19cyclictest171ktimers/023:34:340
283946994527,18cyclictest352192-21/usr/sbin/munin21:10:130
283946994525,19cyclictest0-21swapper/023:45:170
28395399445,39cyclictest0-21swapper/721:30:167
28395399445,39cyclictest0-21swapper/721:30:157
283953994444,0cyclictest0-21swapper/720:35:187
283951994426,0cyclictest0-21swapper/522:50:155
28395099446,19cyclictest0-21swapper/421:50:144
28394699435,19cyclictest283572-21kworker/0:2+ice19:27:490
28394999425,18cyclictest0-21swapper/322:55:133
28394799424,19cyclictest0-21swapper/121:50:141
28394699422,39cyclictest0-21swapper/000:36:180
283947994021,0cyclictest0-21swapper/119:45:151
28394799391,19cyclictest0-21swapper/120:25:161
28394799391,19cyclictest0-21swapper/119:35:171
28394799390,20cyclictest0-21swapper/119:15:271
283953993818,19cyclictest101550irq/39-eno2-TxRx-023:10:157
28395399380,19cyclictest0-21swapper/722:30:237
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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