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2025-12-14 - 03:11
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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 rack3slot6.osadl.org (updated Sun Dec 14, 2025 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
62639911585,21cyclictest26-21ksoftirqd/122:15:261
62639911585,21cyclictest26-21ksoftirqd/122:15:251
62639911478,22cyclictest26-21ksoftirqd/119:55:141
62639910776,18cyclictest26-21ksoftirqd/100:35:171
62639910342,47cyclictest21249-21users00:20:391
62639910262,27cyclictest26-21ksoftirqd/122:30:181
62559910156,33cyclictest14-21ksoftirqd/020:50:130
62639910057,30cyclictest26-21ksoftirqd/123:20:131
6263999964,25cyclictest26-21ksoftirqd/121:35:141
6263999953,32cyclictest26-21ksoftirqd/123:25:151
6263999748,39cyclictest26-21ksoftirqd/123:40:151
6263999650,34cyclictest26-21ksoftirqd/100:10:161
625599969,74cyclictest21214-21grep00:20:370
6263999554,31cyclictest26-21ksoftirqd/120:35:141
6263999451,33cyclictest26-21ksoftirqd/122:35:141
6255999447,34cyclictest14-21ksoftirqd/023:45:160
6263999311,67cyclictest0-21swapper/120:00:121
6263999311,66cyclictest0-21swapper/120:10:131
6263999245,34cyclictest26-21ksoftirqd/122:45:131
6263999245,33cyclictest26-21ksoftirqd/123:55:171
626399918,66cyclictest7791-21runrttasks23:45:141
6263999143,33cyclictest26-21ksoftirqd/120:30:161
6263999112,63cyclictest0-21swapper/121:40:241
6263999111,67cyclictest0-21swapper/122:50:131
6263999044,32cyclictest26-21ksoftirqd/119:35:171
6263999039,34cyclictest26-21ksoftirqd/119:30:151
6263999011,60cyclictest0-21swapper/123:50:141
626399897,62cyclictest21165-21taskset19:50:151
6263998939,31cyclictest26-21ksoftirqd/121:50:141
6263998912,59cyclictest0-21swapper/121:30:121
6263998911,62cyclictest0-21swapper/123:00:151
626399888,62cyclictest16924-21diskmemload21:10:261
6263998838,32cyclictest26-21ksoftirqd/100:05:161
6255998831,48cyclictest14-21ksoftirqd/022:10:110
6263998741,29cyclictest26-21ksoftirqd/123:05:151
6263998635,34cyclictest26-21ksoftirqd/120:40:121
6263998612,62cyclictest0-21swapper/122:55:141
6263998611,62cyclictest0-21swapper/120:55:121
626399859,54cyclictest0-21swapper/121:20:141
626399856,58cyclictest0-21swapper/120:15:141
626399855,60cyclictest0-21swapper/119:15:191
6263998526,36cyclictest11671-21latency_hist20:55:011
6263998414,53cyclictest0-21swapper/122:40:181
6263998339,34cyclictest0-21swapper/121:45:131
6263998331,33cyclictest0-21swapper/123:30:141
6255998321,43cyclictest14-21ksoftirqd/021:05:140
626399828,59cyclictest0-21swapper/123:15:111
626399827,54cyclictest0-21swapper/119:25:141
6263998241,32cyclictest0-21swapper/120:45:151
6263998216,45cyclictest26-21ksoftirqd/119:20:131
6255998236,32cyclictest0-21swapper/021:25:160
6255998231,36cyclictest0-21swapper/023:35:130
626399814,54cyclictest0-21swapper/120:20:151
6263998134,30cyclictest0-21swapper/121:55:111
6263998131,31cyclictest0-21swapper/100:15:151
6263998129,24cyclictest548-21runrttasks21:15:221
6263998112,54cyclictest0-21swapper/100:00:131
6255998111,25cyclictest14-21ksoftirqd/023:25:140
6263998040,31cyclictest0-21swapper/121:05:161
6263998031,25cyclictest548-21runrttasks20:05:151
6263998031,25cyclictest1343-21runrttasks20:25:211
625599808,50cyclictest204-21jbd2/sda1-819:25:150
6263997933,35cyclictest0-21swapper/122:20:151
6263997931,29cyclictest0-21swapper/123:10:141
6263997833,29cyclictest0-21swapper/121:25:131
6263997829,32cyclictest0-21swapper/100:25:151
6263997829,20cyclictest7880-21awk22:15:001
6263997828,25cyclictest548-21runrttasks22:25:241
6263997828,25cyclictest548-21runrttasks22:25:241
6263997827,26cyclictest5888-21sendmail-msp23:40:011
6263997827,25cyclictest14420-21python321:00:341
6263997739,29cyclictest0-21swapper/119:45:131
6263997730,19cyclictest4525-21taskset22:05:151
6263997726,30cyclictest0-21swapper/119:10:231
6263997726,23cyclictest3286-21wc22:00:251
625599771,53cyclictest0-21swapper/000:25:130
6263997624,27cyclictest17902-21sort19:40:181
625599769,47cyclictest14-21ksoftirqd/021:20:140
625599769,16cyclictest17397-21apt-get21:10:260
6263997528,24cyclictest548-21runrttasks00:30:161
451227531,33sleep10-21swapper/119:05:101
6255997431,27cyclictest0-21swapper/021:45:140
6255997316,41cyclictest14-21ksoftirqd/020:10:110
575827121,41sleep00-21swapper/019:06:380
625599667,18cyclictest10116-21apt-get22:20:160
6255996623,36cyclictest250-21systemd-journal19:11:280
6255996613,33cyclictest0-21swapper/019:45:130
6255996611,34cyclictest0-21swapper/019:30:120
6255996535,23cyclictest14-21ksoftirqd/000:34:210
6255996534,24cyclictest14-21ksoftirqd/023:45:010
6255996512,33cyclictest0-21swapper/020:55:150
6255996429,29cyclictest14-21ksoftirqd/023:30:200
6255996429,19cyclictest14-21ksoftirqd/023:55:170
6255996411,35cyclictest0-21swapper/022:45:130
625599638,19cyclictest2779-21apt-get22:00:140
625599637,18cyclictest4520-21apt-get22:05:140
6255996336,21cyclictest14-21ksoftirqd/022:16:290
6255996336,21cyclictest14-21ksoftirqd/022:16:280
6255996314,31cyclictest0-21swapper/020:40:130
625599625,21cyclictest0-21swapper/020:18:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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