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2026-03-24 - 18:39
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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
Characteristics of the 100 highest latencies:
System rackdslot4.osadl.org (updated Tue Mar 24, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591204170,23phc2sys0-21swapper/307:09:333
221582202168,23sleep10-21swapper/107:06:381
221272202167,23sleep20-21swapper/207:06:132
223222198166,21sleep00-21swapper/007:08:450
138491810,1ptp4l391rcuc/309:10:203
138491800,1ptp4l391rcuc/311:40:193
2272299679,10cyclictest12729-21echo09:00:023
22722996510,17cyclictest6653-21date09:50:243
2272299649,16cyclictest0-21swapper/310:47:323
210012620,2sleep30-21swapper/311:25:183
2272299617,15cyclictest24758-21/usr/sbin/munin10:30:253
22722995610,9cyclictest2315-21gnome-shell11:47:593
121192560,2sleep10-21swapper/112:10:251
22722995510,9cyclictest2302-21latency_hist09:45:003
2272299539,18cyclictest12456-21/usr/sbin/munin10:05:173
2272299538,16cyclictest1319-21snmpd10:37:303
2272299528,16cyclictest22663-21grep09:20:133
2272299519,14cyclictest2315-21gnome-shell08:19:583
2272299517,16cyclictest16758-21cat09:05:253
2272299517,16cyclictest16758-21cat09:05:253
2272299509,18cyclictest17764-21grep08:05:133
2272299505,15cyclictest0-21swapper/310:55:173
2272299498,15cyclictest2315-21gnome-shell09:56:583
2272299488,8cyclictest18657-21phc2sys10:15:223
2272299488,16cyclictest8259-21grep12:05:123
2272299488,14cyclictest23414-21expr11:30:143
2272299487,8cyclictest21674-21mailstats08:10:253
2272299486,9cyclictest11026-21ls11:05:213
2272299485,12cyclictest11101-21ls10:00:193
2272299479,17cyclictest15625-21/usr/sbin/munin12:20:223
2272299469,15cyclictest2315-21gnome-shell08:47:583
2272299467,7cyclictest24733-21ls12:35:263
2272299465,15cyclictest0-21swapper/308:40:163
2272299458,10cyclictest1319-21snmpd07:54:053
2272299457,7cyclictest16028-21ps08:00:213
2272299456,8cyclictest21710-21ls09:15:253
2272299448,15cyclictest27595-21/usr/sbin/munin08:25:293
2272299448,15cyclictest27595-21/usr/sbin/munin08:25:283
2272299447,7cyclictest3011-21ps10:50:193
2272299436,8cyclictest22121-21ls12:30:253
134991430,7getstats2272299cyclictest10:21:093
138491420,0ptp4l401ktimersoftd/307:25:103
2272299418,17cyclictest15256-21/usr/sbin/munin11:15:233
2272299416,7cyclictest30554-21perl09:35:163
138491410,0ptp4l401ktimersoftd/310:29:553
138491410,0ptp4l401ktimersoftd/309:48:553
138491410,0ptp4l401ktimersoftd/308:37:103
22721994032,5cyclictest33-21ksoftirqd/209:30:002
22720994035,3cyclictest25-21ksoftirqd/109:40:001
138491400,0ptp4l401ktimersoftd/309:34:263
138491400,0ptp4l401ktimersoftd/309:25:203
22721993931,5cyclictest33-21ksoftirqd/207:40:112
22721993826,10cyclictest33-21ksoftirqd/211:40:332
2272199380,36cyclictest24833-21dump-pmu-power09:24:592
2272299376,12cyclictest4139-21ls11:55:183
22722993731,4cyclictest41-21ksoftirqd/308:32:073
22721993731,4cyclictest33-21ksoftirqd/210:50:352
22721993731,4cyclictest33-21ksoftirqd/209:07:412
22721993731,4cyclictest33-21ksoftirqd/209:07:412
22720993733,2cyclictest25-21ksoftirqd/109:00:001
22720993732,3cyclictest25-21ksoftirqd/109:10:001
22720993732,3cyclictest25-21ksoftirqd/109:10:001
22720993732,3cyclictest25-21ksoftirqd/107:40:181
22720993732,3cyclictest25-21ksoftirqd/107:15:001
22722993630,4cyclictest41-21ksoftirqd/308:58:233
22721993630,4cyclictest33-21ksoftirqd/211:09:362
22721993630,4cyclictest33-21ksoftirqd/210:41:162
22721993630,4cyclictest33-21ksoftirqd/207:36:462
22721993629,5cyclictest33-21ksoftirqd/211:33:192
22720993631,3cyclictest25-21ksoftirqd/111:10:141
22720993630,4cyclictest25-21ksoftirqd/111:24:081
22720993630,4cyclictest25-21ksoftirqd/109:42:181
22720993630,4cyclictest25-21ksoftirqd/107:45:251
22719993630,4cyclictest9-21ksoftirqd/008:42:520
22719993630,4cyclictest9-21ksoftirqd/008:18:450
50798350,6rtkit-daemon0-21swapper/011:25:310
22722993529,4cyclictest41-21ksoftirqd/311:00:113
22722993515,17cyclictest27753-21cron11:40:003
2272199357,26cyclictest0-21swapper/208:24:132
2272199356,28cyclictest0-21swapper/212:15:332
22721993532,2cyclictest33-21ksoftirqd/212:00:002
22721993529,4cyclictest33-21ksoftirqd/210:32:292
22721993529,4cyclictest33-21ksoftirqd/210:05:342
22721993529,4cyclictest33-21ksoftirqd/209:38:582
22721993529,4cyclictest33-21ksoftirqd/208:30:542
22721993529,4cyclictest33-21ksoftirqd/208:19:122
22721993529,4cyclictest33-21ksoftirqd/207:24:192
22720993530,3cyclictest25-21ksoftirqd/111:35:201
22720993530,3cyclictest25-21ksoftirqd/111:20:001
22720993530,3cyclictest25-21ksoftirqd/110:15:131
22720993530,3cyclictest25-21ksoftirqd/108:14:591
22720993529,4cyclictest25-21ksoftirqd/110:57:001
22720993529,4cyclictest25-21ksoftirqd/110:38:461
22720993529,4cyclictest25-21ksoftirqd/110:34:461
22720993529,4cyclictest25-21ksoftirqd/109:56:261
22720993529,4cyclictest25-21ksoftirqd/108:46:301
22720993529,4cyclictest25-21ksoftirqd/108:37:431
22720993529,4cyclictest25-21ksoftirqd/108:08:431
22720993529,3cyclictest25-21ksoftirqd/110:50:001
22720993528,4cyclictest25-21ksoftirqd/110:15:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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