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2026-04-07 - 14:21
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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 Apr 07, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591204169,23phc2sys0-21swapper/319:09:293
222212202169,21sleep00-21swapper/019:09:580
219652202168,23sleep10-21swapper/119:06:451
219142200167,22sleep20-21swapper/219:06:062
2538421320,2sleep22265199cyclictest23:35:162
290422720,2sleep20-21swapper/220:25:252
2264999637,19cyclictest21100-21latency22:20:191
124232630,4sleep09-21ksoftirqd/022:04:550
164192590,2sleep10-21swapper/123:15:251
2265299495,8cyclictest41-21ksoftirqd/300:10:263
2264999481,46cyclictest10550-21kworker/1:222:06:241
2265299475,6cyclictest41-21ksoftirqd/320:30:113
2265299475,4cyclictest41-21ksoftirqd/323:10:263
2265299473,4cyclictest41-21ksoftirqd/300:35:213
50798460,7rtkit-daemon0-21swapper/000:17:370
2265299462,5cyclictest41-21ksoftirqd/320:35:123
22648994640,4cyclictest23195-21sed20:15:180
22648994640,4cyclictest23195-21sed20:15:180
113682460,4sleep311372-21sendmail_mailqu23:05:243
2265299452,6cyclictest41-21ksoftirqd/300:05:273
2264999451,20cyclictest0-21swapper/123:06:091
2265299443,6cyclictest41-21ksoftirqd/322:20:153
2265299442,5cyclictest41-21ksoftirqd/323:28:093
22649994429,13cyclictest25-21ksoftirqd/100:35:091
2264999440,2cyclictest0-21swapper/119:50:571
138491440,0ptp4l401ktimersoftd/322:35:213
138491440,0ptp4l401ktimersoftd/322:35:213
2265299436,5cyclictest41-21ksoftirqd/321:35:183
2265299433,6cyclictest41-21ksoftirqd/319:51:553
2265299432,5cyclictest41-21ksoftirqd/322:15:123
2265299432,4cyclictest0-21swapper/321:18:153
2265299432,4cyclictest0-21swapper/321:18:153
138491430,0ptp4l401ktimersoftd/323:15:293
138491430,0ptp4l401ktimersoftd/320:27:033
138491430,0ptp4l401ktimersoftd/319:55:283
2265299422,6cyclictest0-21swapper/322:10:003
2265299422,5cyclictest41-21ksoftirqd/322:31:413
2265299421,5cyclictest41-21ksoftirqd/319:50:003
2265299421,5cyclictest41-21ksoftirqd/319:50:003
22652994215,8cyclictest41-21ksoftirqd/300:19:283
22652994214,8cyclictest41-21ksoftirqd/320:45:243
2265199421,39cyclictest14761-21cron21:05:012
138491420,0ptp4l401ktimersoftd/322:10:203
138491420,0ptp4l401ktimersoftd/319:36:363
2265299414,6cyclictest41-21ksoftirqd/320:42:263
2265299412,5cyclictest41-21ksoftirqd/321:00:213
2265299412,5cyclictest41-21ksoftirqd/320:18:183
2265299412,5cyclictest41-21ksoftirqd/320:18:183
2265299412,4cyclictest41-21ksoftirqd/319:14:523
2265299412,3cyclictest41-21ksoftirqd/323:24:523
2265299410,6cyclictest41-21ksoftirqd/300:34:153
2265299404,6cyclictest41-21ksoftirqd/321:25:233
2265299402,7cyclictest41-21ksoftirqd/323:00:103
2265299402,5cyclictest41-21ksoftirqd/321:10:153
2265299402,5cyclictest41-21ksoftirqd/320:00:183
2265299401,4cyclictest0-21swapper/321:22:123
22652994014,8cyclictest41-21ksoftirqd/321:05:113
22652994014,7cyclictest41-21ksoftirqd/323:31:143
2264999400,2cyclictest0-21swapper/119:45:011
2264999400,2cyclictest0-21swapper/119:45:011
22648994035,3cyclictest9-21ksoftirqd/021:40:000
22648994034,3cyclictest9-21ksoftirqd/021:10:000
2265299395,8cyclictest41-21ksoftirqd/322:55:243
2265299393,7cyclictest0-21swapper/322:40:073
22652993933,3cyclictest30379-21fschecks_count23:45:153
2265299392,7cyclictest41-21ksoftirqd/300:00:133
2265299391,5cyclictest41-21ksoftirqd/322:26:473
22651993933,4cyclictest33-21ksoftirqd/222:20:592
22649993918,19cyclictest25-21ksoftirqd/100:07:441
2264999391,35cyclictest12431-21cron22:05:011
22648993935,3cyclictest9-21ksoftirqd/023:35:000
22648993934,3cyclictest9-21ksoftirqd/023:05:010
22648993934,3cyclictest9-21ksoftirqd/020:24:590
22648993933,3cyclictest9-21ksoftirqd/022:00:000
2265299384,8cyclictest41-21ksoftirqd/320:20:243
2265299381,5cyclictest41-21ksoftirqd/321:34:593
2265299381,5cyclictest41-21ksoftirqd/320:50:273
22652993814,7cyclictest41-21ksoftirqd/320:10:393
22648993834,2cyclictest9-21ksoftirqd/000:35:010
22648993833,3cyclictest9-21ksoftirqd/022:20:000
22648993833,3cyclictest9-21ksoftirqd/021:15:000
50798370,5rtkit-daemon0-21swapper/020:45:330
2265299375,6cyclictest0-21swapper/322:48:103
2265299374,6cyclictest41-21ksoftirqd/322:50:133
2265299373,5cyclictest41-21ksoftirqd/319:28:073
2265299372,5cyclictest41-21ksoftirqd/319:43:393
2265299371,4cyclictest41-21ksoftirqd/321:43:023
22651993731,4cyclictest33-21ksoftirqd/200:02:432
22649993731,4cyclictest25-21ksoftirqd/100:27:211
22648993733,3cyclictest9-21ksoftirqd/023:00:010
22648993733,2cyclictest9-21ksoftirqd/019:50:000
22648993733,2cyclictest9-21ksoftirqd/019:50:000
22648993732,3cyclictest9-21ksoftirqd/023:10:170
22648993732,3cyclictest9-21ksoftirqd/020:30:170
50798360,4rtkit-daemon26644-21timerwakeupswit20:20:271
2265299366,2cyclictest41-21ksoftirqd/321:47:413
2265299366,2cyclictest41-21ksoftirqd/321:47:413
2265299366,2cyclictest41-21ksoftirqd/320:05:123
2265299366,2cyclictest41-21ksoftirqd/319:16:453
22652993630,4cyclictest41-21ksoftirqd/320:56:513
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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