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2026-03-26 - 10:09
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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 rack5slot3.osadl.org (updated Thu Mar 26, 2026 00:55:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
170499972283,381cyclictest0-21swapper/323:45:383
170499972283,381cyclictest0-21swapper/323:45:383
1704699697441,253cyclictest0-21swapper/023:14:410
170519966774,127cyclictest0-21swapper/523:10:475
170489965824,2cyclictest0-21swapper/200:15:292
17050996370,84cyclictest0-21swapper/400:34:274
1705399635251,381cyclictest25233-21diskmemload23:29:077
170469962533,85cyclictest0-21swapper/023:44:180
170519962070,84cyclictest121rcu_preempt22:55:255
1705299617109,126cyclictest0-21swapper/600:25:046
170489960653,126cyclictest0-21swapper/222:29:582
170479960410,84cyclictest0-21swapper/123:10:291
1704699603393,88cyclictest31283-21cat23:45:140
1704699603393,88cyclictest31283-21cat23:45:140
1704699603266,217cyclictest0-21swapper/022:54:180
17052995940,84cyclictest8158-21ssh00:42:596
17052995930,84cyclictest0-21swapper/600:33:156
1704899590121,211cyclictest33-21ksoftirqd/223:12:122
170509958977,88cyclictest121rcu_preempt20:52:324
170509958977,88cyclictest121rcu_preempt20:52:324
170509958977,88cyclictest121rcu_preempt20:52:324
170499958676,127cyclictest0-21swapper/322:30:023
1705399580112,465cyclictest0-21swapper/723:30:207
1704699580240,338cyclictest20779-1kworker/u17:123:16:520
170489957564,508cyclictest0-21swapper/223:30:202
1705199574108,463cyclictest0-21swapper/521:35:175
170489957130,295cyclictest0-21swapper/222:55:102
170479956958,338cyclictest0-21swapper/100:08:111
170479956920,84cyclictest0-21swapper/123:30:201
170529956616,84cyclictest0-21swapper/623:30:196
170469956554,380cyclictest0-21swapper/023:53:330
1704699564436,126cyclictest0-21swapper/000:34:340
170479956313,84cyclictest0-21swapper/123:28:081
170519956154,126cyclictest121rcu_preempt22:27:375
170489956111,126cyclictest0-21swapper/200:33:362
170539955443,508cyclictest0-21swapper/721:37:227
170509955145,84cyclictest17767-21cat23:20:294
170469955182,84cyclictest121rcu_preempt00:11:240
17046995501,84cyclictest0-21swapper/023:20:290
1704999544117,211cyclictest41-21ksoftirqd/323:11:223
170469954377,84cyclictest0-21swapper/022:44:050
170509954234,126cyclictest0-21swapper/421:37:224
1704799541119,296cyclictest0-21swapper/100:10:301
170499953971,465cyclictest0-21swapper/323:20:283
170479953830,127cyclictest13725-21ssh23:18:491
1705199535108,211cyclictest57-21ksoftirqd/523:18:565
170479953525,380cyclictest0-21swapper/121:36:561
170479953425,84cyclictest0-21swapper/121:08:541
1704699533278,253cyclictest0-21swapper/000:23:590
170499953221,508cyclictest0-21swapper/321:37:223
1705399530108,126cyclictest0-21swapper/723:09:037
1705199527104,253cyclictest12644-21ssh00:09:175
170529952658,210cyclictest65-21ksoftirqd/600:11:106
1705099526187,337cyclictest68050irq/122-eth000:14:374
1705099524184,338cyclictest68050irq/122-eth021:10:144
1704699524270,211cyclictest0-21swapper/022:55:240
1704699522186,210cyclictest8729-21taskset00:43:340
170499952013,295cyclictest0-21swapper/323:44:213
170529951912,44cyclictest0-21swapper/621:37:036
170469951811,169cyclictest0-21swapper/022:28:180
1705099516218,295cyclictest25233-21diskmemload23:09:034
1705099515261,252cyclictest68050irq/122-eth000:15:214
17053995147,3cyclictest0-21swapper/723:17:457
17047995147,254cyclictest0-21swapper/122:54:401
17050995133,337cyclictest49-21ksoftirqd/423:30:184
1704899510168,126cyclictest121rcu_preempt23:09:492
17049995090,84cyclictest0-21swapper/300:33:153
17048995090,84cyclictest0-21swapper/223:53:512
17050995080,83cyclictest0-21swapper/423:53:514
170519950681,422cyclictest0-21swapper/522:19:095
1704699505211,176cyclictest0-21swapper/021:10:160
170539950332,296cyclictest17044-21cyclictest00:35:207
170509950178,84cyclictest0-21swapper/422:54:594
1705099500116,212cyclictest49-21ksoftirqd/422:45:124
1705199498118,213cyclictest25233-21diskmemload00:14:305
170469949832,88cyclictest121rcu_preempt21:08:220
170509949730,84cyclictest0-21swapper/423:27:414
170529949632,84cyclictest0-21swapper/623:20:296
170529949627,338cyclictest20774-21ssh22:29:556
170489949669,211cyclictest0-21swapper/223:17:042
1704699496114,125cyclictest9-21ksoftirqd/021:40:110
170509949574,92cyclictest49-21ksoftirqd/400:09:094
1705299494109,169cyclictest4366-21ssh23:10:476
170509949470,126cyclictest0-21swapper/422:18:284
170539949123,465cyclictest0-21swapper/722:19:357
170539949063,211cyclictest7445-21ssh23:14:177
170529948967,84cyclictest0-21swapper/622:54:106
1705099489360,126cyclictest0-21swapper/421:08:124
170499948963,126cyclictest41-21ksoftirqd/322:19:593
1704999486102,211cyclictest3585-21ssh22:54:413
170469948558,253cyclictest0-21swapper/023:29:550
1704699485143,210cyclictest23069-21timerwakeupswit00:15:280
1705199484186,126cyclictest20779-1kworker/u17:123:27:555
1705099484356,126cyclictest481ktimersoftd/400:24:384
170489948420,127cyclictest0-21swapper/221:40:132
170529948317,211cyclictest0-21swapper/623:53:126
170519948317,84cyclictest0-21swapper/522:54:585
170509948216,168cyclictest7555-21ssh23:14:224
170469948117,84cyclictest0-21swapper/021:39:130
1705199480396,4cyclictest561ktimersoftd/522:20:165
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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