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2025-11-24 - 01:53
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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 rackdslot0.osadl.org (updated Sun Nov 23, 2025 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2958799263,5cyclictest0-21swapper/111:33:271
29587992416,7cyclictest0-21swapper/111:27:431
2959299230,5cyclictest0-21swapper/210:48:032
2959299230,3cyclictest0-21swapper/207:49:192
2958799225,2cyclictest26414-21mailstats08:55:271
2958799225,2cyclictest17889-21wc07:45:151
2958799225,16cyclictest32062-21sed09:05:231
2958799225,16cyclictest13593-21awk07:35:211
2958799224,17cyclictest19727-21expr12:35:141
2958799222,19cyclictest0-21swapper/110:55:211
29587992219,2cyclictest28678-21munin-plugin-st11:55:001
29587992219,2cyclictest24527-21grep07:55:221
29587992219,2cyclictest20841-21sed11:40:001
29587992218,3cyclictest3191-21missed_timers10:10:201
2958799214,2cyclictest22415-21expr08:50:141
2958799214,2cyclictest17174-21sed10:35:161
2958799214,16cyclictest8690-21taskset07:29:031
2958799214,16cyclictest7073-21/usr/sbin/munin11:15:121
2958799213,3cyclictest0-21swapper/108:00:171
2958799213,17cyclictest12400-21smartctl12:20:201
2958799213,16cyclictest14882-21cpu09:35:131
2958799212,4cyclictest0-21swapper/109:26:441
29587992118,2cyclictest4524-21grep11:10:151
29587992118,2cyclictest10470-21netstat07:30:181
29587992118,2cyclictest0-21swapper/108:25:151
29587992118,2cyclictest0-21swapper/107:14:551
29587992117,3cyclictest4536-21H212:26:331
2958799210,17cyclictest0-21swapper/112:30:291
2958399211,14cyclictest0-21swapper/010:03:560
2958399210,18cyclictest0-21swapper/009:09:330
2959299203,16cyclictest2897-21smtpd09:11:012
29592992018,1cyclictest0-21swapper/209:25:162
2959299200,16cyclictest4581-21H212:26:332
2958799203,16cyclictest0-21swapper/109:30:191
2958799203,16cyclictest0-21swapper/109:30:181
2958799202,3cyclictest0-21swapper/112:20:001
2958799202,17cyclictest4532-21H212:26:331
2958799202,17cyclictest0-21swapper/110:50:151
2958799202,17cyclictest0-21swapper/107:50:151
29587992018,2cyclictest0-21swapper/108:30:211
29587992017,2cyclictest958-21idleruntime07:15:171
29587992017,2cyclictest5181-21latency_hist12:10:011
29587992017,2cyclictest379-21ntpq10:05:181
29587992017,2cyclictest24199-21taskset10:47:431
29587992017,2cyclictest21-21ksoftirqd/110:03:351
29587992017,2cyclictest19598-21expr10:40:131
29587992017,2cyclictest10186-21expr11:20:141
29587992017,2cyclictest0-21swapper/112:10:181
29587992017,2cyclictest0-21swapper/109:55:171
29587992017,2cyclictest0-21swapper/109:17:521
29587992017,2cyclictest0-21swapper/108:20:151
29587992017,2cyclictest0-21swapper/108:05:151
29587992017,2cyclictest0-21swapper/107:20:211
29587992016,3cyclictest0-21swapper/111:45:131
29587992016,3cyclictest0-21swapper/108:15:021
29587992016,3cyclictest0-21swapper/108:15:021
29587992015,4cyclictest0-21swapper/108:40:201
2958399200,2cyclictest21197-21apt08:50:000
2958399200,17cyclictest0-21swapper/009:41:450
29592991917,1cyclictest0-21swapper/208:29:322
29592991917,1cyclictest0-21swapper/207:32:452
2959299191,17cyclictest13334-21nfsd407:35:172
2959299190,2cyclictest4536-21H212:26:332
2959299190,2cyclictest4536-21H212:26:332
2959299190,2cyclictest4530-21H212:26:332
2959299190,18cyclictest0-21swapper/210:04:012
2959299190,16cyclictest4581-21H212:26:332
2959299190,16cyclictest4538-21H212:26:332
2958799192,3cyclictest0-21swapper/111:05:131
2958799192,2cyclictest0-21swapper/109:00:191
2958799192,16cyclictest4530-21H212:26:331
2958799192,16cyclictest4530-21H212:26:331
2958799192,16cyclictest0-21swapper/109:50:221
29587991916,3cyclictest0-21swapper/110:20:161
29587991916,2cyclictest4593-21H212:26:331
29587991916,2cyclictest20083-21nfsd408:45:201
29587991915,3cyclictest0-21swapper/109:40:211
2958799191,2cyclictest0-21swapper/108:35:451
2958799191,17cyclictest0-21swapper/112:02:481
2958799191,17cyclictest0-21swapper/111:55:211
2958799191,17cyclictest0-21swapper/109:46:591
2958799191,17cyclictest0-21swapper/107:40:151
2958399191,3cyclictest0-21swapper/007:30:180
2958399190,3cyclictest0-21swapper/010:30:180
2958399190,2cyclictest4523-21H212:26:330
2958399190,16cyclictest4534-21H212:26:330
2958399190,16cyclictest4534-21H212:26:330
2959299182,1cyclictest0-21swapper/209:00:002
2959299182,1cyclictest0-21swapper/208:42:052
2959299182,15cyclictest4536-21H212:26:332
2959299182,15cyclictest0-21swapper/209:06:392
29592991814,3cyclictest6998-21sed11:15:022
29592991814,3cyclictest4538-21H212:26:332
29592991814,3cyclictest4530-21H212:26:332
29592991813,2cyclictest4534-21H212:26:332
29592991813,2cyclictest4534-21H212:26:332
2959299181,16cyclictest4538-21H212:26:332
2959299181,16cyclictest414-20systemd-journal09:55:372
2959299180,2cyclictest4581-21H212:26:332
2959299180,2cyclictest4538-21H212:26:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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