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2026-04-21 - 17:26
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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 Tue Apr 21, 2026 12:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
396708999860,85cyclictest0-21swapper/111:25:171
3967098997233,38cyclictest0-21swapper/707:20:167
3967092997032,2cyclictest0-21swapper/309:16:003
396709299695,60cyclictest4114089-21python311:35:223
3967092996425,38cyclictest3970224-21aten2.4_rfpower07:15:133
396709299633,39cyclictest3968619-21gcc07:10:193
3967092996224,19cyclictest4033302-21cut09:10:133
3967092996224,19cyclictest4033302-21cut09:10:123
3967092996121,18cyclictest4092126-21awk10:55:233
3967092995714,20cyclictest4016831-21kworker/u32:4+ext4-rsv-conversion09:35:003
396709299570,38cyclictest4040942-21latency_hist09:25:013
3967098995553,1cyclictest3944784-21kworker/7:1+events09:05:197
3967098995553,1cyclictest3944784-21kworker/7:1+events09:05:187
3967092995514,39cyclictest3982277-21ntpq07:35:193
3967092995416,18cyclictest872-21mta-sts-daemon10:25:243
3967092995414,39cyclictest0-21swapper/308:05:003
396709299540,34cyclictest0-21swapper/311:50:333
3967092995335,18cyclictest4096797-21grep11:05:153
3967092995314,39cyclictest511ktimers/308:38:333
3967092995314,39cyclictest0-21swapper/312:33:493
3967092995314,39cyclictest0-21swapper/311:47:503
3967092995314,39cyclictest0-21swapper/308:05:413
3967092995314,39cyclictest0-21swapper/307:59:453
3967089995315,19cyclictest0-21swapper/111:15:161
3967098995214,19cyclictest0-21swapper/709:30:157
3967092995214,19cyclictest4087703-21munin-run10:50:013
3967092995213,39cyclictest0-21swapper/312:16:393
3967092995213,39cyclictest0-21swapper/309:57:553
3967092995213,39cyclictest0-21swapper/309:26:083
3967092995213,39cyclictest0-21swapper/308:55:363
3967089995214,19cyclictest0-21swapper/107:40:171
3967092995133,18cyclictest0-21swapper/308:30:243
3967092995131,20cyclictest0-21swapper/310:05:533
3967092995113,19cyclictest0-21swapper/312:23:073
3967092995113,19cyclictest0-21swapper/308:45:583
3967092995113,19cyclictest0-21swapper/307:29:493
3967092995112,39cyclictest0-21swapper/310:15:543
3967090995114,18cyclictest0-21swapper/207:15:172
3967088995113,19cyclictest0-21swapper/012:15:160
3967089995013,18cyclictest0-21swapper/111:50:171
3967097994911,19cyclictest0-21swapper/610:40:166
3967097994911,19cyclictest0-21swapper/609:50:156
3967095994911,19cyclictest0-21swapper/510:50:175
3967094994911,19cyclictest0-21swapper/409:00:164
3967094994911,19cyclictest0-21swapper/409:00:164
3967092994931,18cyclictest0-21swapper/311:41:253
3967092994931,18cyclictest0-21swapper/308:40:173
3967092994931,18cyclictest0-21swapper/308:15:213
3967092994928,21cyclictest4028378-21cut09:00:153
3967092994928,21cyclictest4028378-21cut09:00:143
3967089994910,39cyclictest0-21swapper/112:10:151
396709599489,19cyclictest0-21swapper/511:40:145
396709299489,39cyclictest0-21swapper/308:23:543
396709299488,39cyclictest0-21swapper/308:28:113
396709299487,39cyclictest0-21swapper/308:50:193
3967090994810,19cyclictest0-21swapper/207:45:172
396709499479,19cyclictest0-21swapper/410:15:154
396709499473,19cyclictest0-21swapper/410:00:154
396709299479,19cyclictest4081334-21grep10:35:243
396709299478,19cyclictest0-21swapper/310:50:123
3967092994729,18cyclictest0-21swapper/312:35:143
3967092994728,0cyclictest0-21swapper/309:05:373
3967092994728,0cyclictest0-21swapper/309:05:373
396709599468,19cyclictest0-21swapper/510:55:175
396709499468,19cyclictest0-21swapper/412:30:154
396709499467,39cyclictest0-21swapper/408:25:184
396709299467,39cyclictest0-21swapper/308:12:023
3967092994526,19cyclictest3979248-21uname07:30:163
3967092994526,19cyclictest0-21swapper/309:40:483
3967092994526,19cyclictest0-21swapper/307:48:373
396708899457,19cyclictest0-21swapper/008:30:160
396708899456,20cyclictest0-21swapper/007:25:160
396709599446,19cyclictest0-21swapper/511:55:225
396709299446,19cyclictest0-21swapper/310:00:403
3967092994426,18cyclictest0-21swapper/312:01:523
3967092994425,19cyclictest0-21swapper/311:19:093
396708899446,19cyclictest221rcuc/011:40:150
396709599430,0cyclictest0-21swapper/509:00:175
396709599430,0cyclictest0-21swapper/509:00:165
3967092994325,18cyclictest0-21swapper/307:53:323
396709599424,19cyclictest0-21swapper/508:45:155
396709099424,19cyclictest0-21swapper/212:25:162
396708999424,19cyclictest0-21swapper/108:35:171
396709899412,38cyclictest0-21swapper/711:20:157
396709799413,19cyclictest0-21swapper/611:10:166
396709499413,19cyclictest0-21swapper/411:50:174
396709499413,19cyclictest0-21swapper/408:50:154
3967094994123,18cyclictest0-21swapper/408:40:164
396708999413,19cyclictest0-21swapper/109:40:151
396709499402,19cyclictest0-21swapper/411:35:174
396709499401,2cyclictest4137259-21latency_hist12:20:014
396708999402,19cyclictest0-21swapper/108:00:161
3967088994022,0cyclictest0-21swapper/007:55:160
396709899391,19cyclictest0-21swapper/708:55:167
396709899391,19cyclictest0-21swapper/707:10:167
396709499390,0cyclictest0-21swapper/409:45:154
396709299390,19cyclictest0-21swapper/311:29:383
396709099390,20cyclictest0-21swapper/212:20:162
3967095993814,19cyclictest0-21swapper/510:35:195
3967094993838,0cyclictest0-21swapper/410:55:234
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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