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2025-12-04 - 14:25
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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 100 highest latencies:
System rackfslot7.osadl.org (updated Thu Dec 04, 2025 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
922504999436,39cyclictest1032102-21tune2fs22:20:145
922504997619,38cyclictest1090301-21timerandwakeup00:00:245
922504997437,18cyclictest691ktimers/520:10:075
922504997232,39cyclictest0-21swapper/519:21:515
922504997214,39cyclictest1024441-21ntpq22:05:225
922504997013,0cyclictest1087115-21ntpq23:55:205
922504996912,38cyclictest954726-21awk20:05:015
922504996810,39cyclictest951270-21users19:55:255
922504996628,38cyclictest0-21swapper/519:11:595
922504996021,39cyclictest982862-21sshd20:52:395
922504995921,19cyclictest691ktimers/520:44:475
922504995921,19cyclictest1036832-21/usr/sbin/munin22:30:015
922504995920,39cyclictest691ktimers/521:45:515
92250499591,39cyclictest973327-21collect220:35:225
92250499580,39cyclictest1060292-21cat23:10:155
922504995613,40cyclictest1021600-21ntpq22:00:185
922504995613,19cyclictest0-21swapper/520:20:195
92250499560,56cyclictest0-21swapper/521:54:175
92250499560,55cyclictest0-21swapper/521:35:055
92250499550,55cyclictest0-21swapper/523:38:415
922504995419,35cyclictest0-21swapper/500:39:545
922504995419,34cyclictest0-21swapper/520:58:405
922504995419,15cyclictest0-21swapper/523:17:025
922504995415,39cyclictest0-21swapper/523:29:065
922504995414,39cyclictest956280-21memory20:05:215
922504995414,39cyclictest0-21swapper/522:38:275
922504995414,39cyclictest0-21swapper/521:16:195
922504995414,39cyclictest0-21swapper/521:08:155
922504995414,39cyclictest0-21swapper/500:24:305
922504995319,34cyclictest0-21swapper/523:31:105
922504995319,15cyclictest0-21swapper/519:25:355
922504995315,38cyclictest1045112-21taskset22:44:425
922504995314,39cyclictest0-21swapper/523:53:265
922504995314,39cyclictest0-21swapper/522:18:225
922504995314,39cyclictest0-21swapper/521:58:515
922504995314,39cyclictest0-21swapper/521:26:315
922504995313,39cyclictest0-21swapper/519:45:475
922504995313,39cyclictest0-21swapper/519:18:035
922504995312,40cyclictest0-21swapper/522:11:255
922504995311,19cyclictest948836-21munin-run19:55:025
922504995233,19cyclictest0-21swapper/522:45:265
922504995232,19cyclictest0-21swapper/523:21:585
922504995232,19cyclictest0-21swapper/521:13:475
922504995214,19cyclictest0-21swapper/500:30:165
922504995213,39cyclictest0-21swapper/523:44:305
922504995213,39cyclictest0-21swapper/520:26:435
922504995133,18cyclictest0-21swapper/521:31:275
922504995133,18cyclictest0-21swapper/521:31:275
922504995133,18cyclictest0-21swapper/520:46:275
922504995133,18cyclictest0-21swapper/519:33:355
922504995133,18cyclictest0-21swapper/500:16:105
922504995132,19cyclictest0-21swapper/522:32:545
922504995132,19cyclictest0-21swapper/521:40:325
922504995132,19cyclictest0-21swapper/521:40:315
922504995132,19cyclictest0-21swapper/521:20:115
922504995132,19cyclictest0-21swapper/519:38:395
922504995132,19cyclictest0-21swapper/500:08:225
922504995113,38cyclictest0-21swapper/520:15:155
922504995112,39cyclictest0-21swapper/523:47:145
922504995112,39cyclictest0-21swapper/522:51:385
922504995112,39cyclictest0-21swapper/521:01:235
922504995112,39cyclictest0-21swapper/520:32:595
922504995112,0cyclictest0-21swapper/519:45:015
922504995032,18cyclictest0-21swapper/500:10:555
922504995031,19cyclictest0-21swapper/523:06:545
922504995031,19cyclictest0-21swapper/523:01:225
922504995031,19cyclictest0-21swapper/500:26:025
922504995011,39cyclictest0-21swapper/522:55:025
922503995012,19cyclictest0-21swapper/419:50:164
922501995011,39cyclictest0-21swapper/223:00:172
922499995013,18cyclictest0-21swapper/021:35:160
922503994911,38cyclictest0-21swapper/421:10:174
922500994829,19cyclictest0-21swapper/123:05:161
922499994830,18cyclictest0-21swapper/022:45:150
92250399468,19cyclictest0-21swapper/420:25:144
92249999457,19cyclictest0-21swapper/021:20:180
92249999446,38cyclictest0-21swapper/020:05:180
922499994426,18cyclictest0-21swapper/022:30:170
92250399425,18cyclictest0-21swapper/422:50:174
92250399424,19cyclictest0-21swapper/420:50:174
92250599410,40cyclictest0-21swapper/623:00:246
92250399413,19cyclictest0-21swapper/422:00:154
92250099412,39cyclictest0-21swapper/121:30:181
92250099412,39cyclictest0-21swapper/121:30:171
92250099412,39cyclictest0-21swapper/120:10:161
92249999413,38cyclictest0-21swapper/021:50:170
922503994014,20cyclictest0-21swapper/421:00:164
922500994021,19cyclictest0-21swapper/120:00:171
92250599391,19cyclictest0-21swapper/622:25:176
92250499390,38cyclictest0-21swapper/519:10:035
922501993920,19cyclictest0-21swapper/220:30:162
92249999391,19cyclictest0-21swapper/023:30:150
92249999390,20cyclictest0-21swapper/022:15:190
922506993814,19cyclictest0-21swapper/723:10:177
922503993814,19cyclictest0-21swapper/420:10:164
92250099380,19cyclictest0-21swapper/121:40:161
92250099380,19cyclictest0-21swapper/121:40:161
922506993713,24cyclictest0-21swapper/720:00:177
922506993713,0cyclictest0-21swapper/723:50:167
922503993712,20cyclictest0-21swapper/420:05:194
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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