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2026-05-07 - 06:04
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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 rackdslot1.osadl.org (updated Thu May 07, 2026 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
48252740,5sleep34828-21switchtime00:25:253
18399997411,13cyclictest7175-21chrt22:11:022
18399997312,11cyclictest4459-21chrt20:58:162
18399997212,18cyclictest16453-21chrt20:15:042
18399997112,12cyclictest5286-21chrt23:19:222
18399997112,11cyclictest12039-21chrt22:24:132
18399997012,12cyclictest2869-21chrt22:04:442
1839999699,12cyclictest30359-21ls20:45:132
18399996912,16cyclictest9832-21chrt23:28:282
18399996912,12cyclictest1317-21runrttasks23:06:482
18399996912,11cyclictest2980-21chrt23:14:162
18399996911,11cyclictest4617-21chrt19:49:202
18399996910,56cyclictest32076-21ls21:55:262
18399996815,11cyclictest8860-21chrt21:05:382
18399996812,11cyclictest29767-21chrt19:30:422
18399996812,11cyclictest21384-21chrt23:53:192
18399996812,11cyclictest16044-21taskset21:23:242
18399996811,10cyclictest10252-21chrt00:39:132
1839999676,25cyclictest212-21systemd-journal22:05:592
18399996713,11cyclictest7805-21chrt00:32:232
18399996711,11cyclictest21296-21chrt22:41:172
18399996613,11cyclictest14483-21taskset22:27:382
18399996612,20cyclictest25819-21chrt22:50:322
18399996612,18cyclictest1980-21chrt19:40:332
18399996612,11cyclictest8902-21chrt19:55:302
18399996612,11cyclictest20360-21chrt19:13:382
18399996612,11cyclictest14422-21taskset23:37:442
18399996612,10cyclictest13679-21chrt21:17:462
18399996611,12cyclictest16911-21chrt23:44:562
18399996515,11cyclictest23367-21cat21:39:592
18399996513,16cyclictest18120-21chrt21:25:362
18399996513,14cyclictest30103-21seq21:51:092
18399996510,18cyclictest134491ptp4l23:45:262
18399996510,17cyclictest139082sleep220:09:462
1839799651,15cyclictest10579-21grep23:30:160
1839799651,15cyclictest10579-21grep23:30:150
134491650,3ptp4l12677-21grep22:25:131
18399996412,11cyclictest25405-21taskset21:42:302
18399996412,11cyclictest18973-21chrt22:36:122
18399996411,10cyclictest32242-21taskset19:38:012
18399996411,10cyclictest23025-21taskset20:28:312
18399996312,15cyclictest27671-21seq21:47:082
18399996312,11cyclictest6667-21chrt21:01:532
18399996312,11cyclictest28168-21taskset00:06:482
18399996311,9cyclictest20411-21awk20:20:272
18399996311,21cyclictest32569-21chrt20:50:022
18399996311,12cyclictest30020-21chrt20:44:402
18399996311,11cyclictest27609-21chrt20:38:252
18399996311,11cyclictest23528-21chrt23:56:292
134491630,3ptp4l0-21swapper/100:30:001
18399996215,11cyclictest2930-21chrt00:21:312
18399996212,17cyclictest9439-21chrt22:15:432
18399996211,15cyclictest30640-21seq00:11:302
18399996210,10cyclictest616-21chrt00:17:502
18399996115,12cyclictest7418-21chrt23:21:582
18399996112,12cyclictest23807-21seq22:49:062
1839999609,10cyclictest227092sleep219:19:152
1839999607,13cyclictest15386-21ps20:10:242
18399996016,16cyclictest25831-21chrt00:01:182
18399996014,12cyclictest20636-21chrt21:33:152
18399996014,11cyclictest25122-21chrt20:30:552
18399996014,11cyclictest12245-21chrt23:34:572
18399996014,11cyclictest12245-21chrt23:34:572
18399995913,12cyclictest11148-21chrt21:10:322
18399995910,16cyclictest5226-21/usr/sbin/munin19:50:122
134491590,4ptp4l0-21swapper/200:25:522
134491590,4ptp4l0-21swapper/020:25:310
134491590,3ptp4l8164-21meminfo19:55:191
27552580,6sleep30-21swapper/300:20:293
18399995814,12cyclictest16744-21chrt22:32:122
18399995715,17cyclictest27328-21taskset19:26:352
18399995615,16cyclictest28180-21taskset22:56:142
1839799561,11cyclictest7853-21sed23:25:010
134491560,4ptp4l0-21swapper/122:41:411
1839799557,6cyclictest0-21swapper/020:45:140
134491550,5ptp4l0-21swapper/019:55:180
134491550,4ptp4l0-21swapper/119:29:271
134491550,3ptp4l0-21swapper/320:58:553
1839799547,5cyclictest0-21swapper/021:15:190
134491540,3ptp4l0-21swapper/121:01:021
134491540,3ptp4l0-21swapper/120:43:441
18399995313,10cyclictest25241-21taskset19:24:162
1839799531,11cyclictest10425-21cat00:40:010
134491530,4ptp4l0-21swapper/322:23:083
134491530,4ptp4l0-21swapper/121:15:201
134491530,4ptp4l0-21swapper/119:52:391
134491530,4ptp4l0-21swapper/119:47:011
134491530,4ptp4l0-21swapper/119:23:511
134491530,4ptp4l0-21swapper/119:15:331
134491530,3ptp4l0-21swapper/120:24:481
134491530,10ptp4l0-21swapper/121:49:291
1839799520,11cyclictest23164-21switchtime23:55:250
134491520,9ptp4l0-21swapper/321:49:393
134491520,4ptp4l0-21swapper/019:05:110
134491520,3ptp4l0-21swapper/123:19:441
1839799516,5cyclictest0-21swapper/022:20:110
1839799514,6cyclictest0-21swapper/019:50:220
134491510,4ptp4l0-21swapper/320:23:503
134491510,4ptp4l0-21swapper/121:07:571
134491510,3ptp4l0-21swapper/323:50:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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