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2025-09-19 - 01:10
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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 highest latencies:
System rack3slot6.osadl.org (updated Thu Sep 18, 2025 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9495999857,23cyclictest26-21ksoftirqd/110:35:131
778329137,38sleep00-21swapper/007:05:160
9495999052,21cyclictest26-21ksoftirqd/109:05:151
9495998150,18cyclictest26-21ksoftirqd/111:55:161
774128032,35sleep10-21swapper/107:05:141
9489997655,10cyclictest14-21ksoftirqd/008:30:120
9489997625,44cyclictest6595-21aten2.4-expect10:00:170
9495997453,13cyclictest26-21ksoftirqd/107:20:121
949599742,56cyclictest23150-21needreboot09:15:331
9489997246,15cyclictest14-21ksoftirqd/009:30:160
9489997145,15cyclictest14-21ksoftirqd/011:20:150
9489997143,19cyclictest14-21ksoftirqd/008:45:150
9489997140,18cyclictest0-21swapper/009:55:140
9489997042,19cyclictest14-21ksoftirqd/008:15:240
9489997042,15cyclictest14-21ksoftirqd/010:20:190
9489996943,17cyclictest14-21ksoftirqd/011:30:120
9489996942,17cyclictest14-21ksoftirqd/012:10:130
9489996941,17cyclictest14-21ksoftirqd/008:10:140
9489996842,15cyclictest14-21ksoftirqd/009:45:210
9489996841,22cyclictest14-21ksoftirqd/012:30:140
9489996840,21cyclictest14-21ksoftirqd/010:30:130
9489996839,22cyclictest14-21ksoftirqd/011:45:130
9489996639,21cyclictest14-21ksoftirqd/011:00:130
9489996639,20cyclictest14-21ksoftirqd/010:35:130
9489996639,17cyclictest14-21ksoftirqd/007:50:120
9489996637,16cyclictest0-21swapper/008:20:250
9489996636,21cyclictest14-21ksoftirqd/010:50:020
9489996537,18cyclictest553-21runrttasks08:05:130
9489996536,16cyclictest0-21swapper/009:10:120
241512650,6sleep124148-21awk10:50:011
9489996440,14cyclictest14-21ksoftirqd/011:15:150
9489996438,21cyclictest14-21ksoftirqd/010:10:320
948999643,35cyclictest254-21systemd-journal11:58:400
9489996333,23cyclictest14-21ksoftirqd/007:15:110
9495996214,42cyclictest0-21swapper/110:20:301
9489996242,13cyclictest13590-21apt-get07:20:130
9489996237,18cyclictest9482-21cyclictest12:25:130
9489996234,21cyclictest14-21ksoftirqd/011:25:190
9489996232,20cyclictest14-21ksoftirqd/012:35:220
9489996231,17cyclictest0-21swapper/008:50:250
9489996138,17cyclictest14-21ksoftirqd/007:40:200
9489996134,22cyclictest14-21ksoftirqd/009:00:120
9489996134,22cyclictest14-21ksoftirqd/007:45:260
948999613,23cyclictest16205-21ntp_kernel_pll_08:55:280
9489996132,20cyclictest14-21ksoftirqd/008:35:140
9489996132,16cyclictest0-21swapper/012:15:210
9489996131,16cyclictest0-21swapper/010:25:130
9495996030,25cyclictest26-21ksoftirqd/112:32:221
9489996037,18cyclictest14-21ksoftirqd/010:58:490
9489996035,16cyclictest14-21ksoftirqd/010:15:130
9489996032,16cyclictest0-21swapper/010:05:150
9489995936,17cyclictest14-21ksoftirqd/007:10:310
9489995931,19cyclictest17351-21grep12:00:260
9489995924,30cyclictest13077-21aten2.4-expect11:50:180
9489995922,32cyclictest15494-21aten2.4-expect07:25:210
9489995921,32cyclictest254-21systemd-journal09:23:070
9489995921,26cyclictest0-21swapper/008:25:120
9495995834,10cyclictest504-21snmpd09:51:251
9495995815,38cyclictest0-21swapper/110:10:191
9489995838,16cyclictest14-21ksoftirqd/011:10:180
9489995831,21cyclictest10300-21df08:40:190
9489995829,21cyclictest14-21ksoftirqd/007:35:110
9489995828,25cyclictest14-21ksoftirqd/009:50:160
9489995820,32cyclictest254-21systemd-journal12:08:420
9495995734,18cyclictest26-21ksoftirqd/110:15:181
9495995734,18cyclictest26-21ksoftirqd/108:51:211
9489995739,9cyclictest14-21ksoftirqd/008:00:270
9489995739,9cyclictest14-21ksoftirqd/007:55:300
9489995738,11cyclictest14-21ksoftirqd/010:40:360
9489995735,17cyclictest14-21ksoftirqd/012:20:360
9489995734,19cyclictest14-21ksoftirqd/011:41:390
9489995734,17cyclictest14-21ksoftirqd/011:05:340
9489995730,21cyclictest14-21ksoftirqd/007:30:290
9489995729,19cyclictest487-21gdbus09:39:000
949599566,44cyclictest0-21swapper/109:00:181
9495995640,10cyclictest26-21ksoftirqd/109:34:591
9495995612,39cyclictest0-21swapper/110:30:241
9489995619,30cyclictest31781-21aten2.4-expect09:40:200
9489995612,19cyclictest22622-21aten2.4-expect09:15:230
949599559,27cyclictest26-21ksoftirqd/107:54:121
9495995524,25cyclictest26-21ksoftirqd/107:18:571
9489995540,9cyclictest14-21ksoftirqd/011:35:190
9489995538,9cyclictest14-21ksoftirqd/010:50:290
9489995538,11cyclictest14-21ksoftirqd/009:25:220
9489995538,11cyclictest14-21ksoftirqd/009:05:270
949599546,42cyclictest0-21swapper/111:25:241
949599545,44cyclictest0-21swapper/110:05:301
9495995439,9cyclictest26-21ksoftirqd/111:15:211
9495995439,10cyclictest0-21swapper/107:35:121
9495995438,11cyclictest27608-21cron11:00:001
9495995438,11cyclictest0-21swapper/112:02:251
9495995437,10cyclictest26-21ksoftirqd/112:25:171
9495995437,10cyclictest26-21ksoftirqd/108:45:271
9495995433,15cyclictest14619-21latency_hist11:55:021
9495995424,25cyclictest0-21swapper/110:50:181
9495995422,26cyclictest29907-21cat08:05:251
949599539,39cyclictest0-21swapper/111:23:151
949599539,10cyclictest0-21swapper/111:10:351
949599537,40cyclictest0-21swapper/109:40:211
949599535,41cyclictest0-21swapper/107:50:001
9495995338,9cyclictest26-21ksoftirqd/108:30:191
9495995337,10cyclictest26-21ksoftirqd/111:00:331
9495995337,10cyclictest26-21ksoftirqd/110:00:251
9495995337,10cyclictest0-21swapper/108:15:211
9495995337,10cyclictest0-21swapper/108:10:261
949599533,44cyclictest20777-21/usr/sbin/munin09:10:401
9495995315,32cyclictest254-21systemd-journal12:14:591
949599528,10cyclictest0-21swapper/112:15:241
949599527,40cyclictest0-21swapper/108:20:321
949599526,41cyclictest0-21swapper/111:30:331
949599526,11cyclictest0-21swapper/111:35:291
949599525,42cyclictest0-21swapper/111:40:181
949599525,41cyclictest0-21swapper/107:25:281
9495995236,9cyclictest26-21ksoftirqd/110:43:051
9495995236,9cyclictest26-21ksoftirqd/109:45:331
9495995236,10cyclictest26-21ksoftirqd/107:10:211
9495995234,13cyclictest26-21ksoftirqd/112:40:001
9495995229,8cyclictest26-21ksoftirqd/107:30:191
9495995136,9cyclictest26-21ksoftirqd/112:05:191
9495995136,9cyclictest26-21ksoftirqd/108:40:311
9495995135,10cyclictest26-21ksoftirqd/109:20:301
949599513,41cyclictest20819-21aten2.4_r3power07:40:181
9495995134,11cyclictest26-21ksoftirqd/107:55:411
949599503,9cyclictest26-21ksoftirqd/108:55:281
9495995035,9cyclictest26-21ksoftirqd/112:20:231
9495995034,10cyclictest26-21ksoftirqd/111:05:301
9495995034,10cyclictest26-21ksoftirqd/109:55:201
9495995034,10cyclictest26-21ksoftirqd/109:25:171
9495995033,10cyclictest26-21ksoftirqd/111:45:311
9495995014,18cyclictest9482-21cyclictest10:25:321
9495994933,10cyclictest26-21ksoftirqd/109:35:261
47742493,7sleep10-21swapper/108:25:141
9495994834,9cyclictest26-21ksoftirqd/108:00:161
9495994832,10cyclictest26-21ksoftirqd/108:35:331
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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