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2026-04-17 - 09:07
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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 rack7slot1.osadl.org (updated Fri Apr 17, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2135921290,1sleep130222-21stress22:04:351
9986211350,58sleep20-21swapper/219:07:282
10045211051,21sleep00-21swapper/019:08:150
983429352,36sleep10-21swapper/119:05:391
982128762,20sleep30-21swapper/319:05:293
69262690,2sleep230221-21stress00:00:202
69262690,2sleep230221-21stress00:00:192
10286994914,32cyclictest0-21swapper/000:05:460
10286994415,26cyclictest0-21swapper/023:30:290
1028699437,19cyclictest0-21swapper/023:26:320
1028699428,31cyclictest0-21swapper/000:29:370
10286994218,21cyclictest0-21swapper/022:01:260
1028699417,31cyclictest0-21swapper/022:48:090
1028699417,31cyclictest0-21swapper/022:48:080
10286994110,28cyclictest0-21swapper/023:41:450
1028699409,20cyclictest0-21swapper/021:15:270
1028699399,28cyclictest0-21swapper/023:46:420
10286993914,22cyclictest0-21swapper/022:22:250
10286993913,23cyclictest0-21swapper/000:33:250
10286993911,25cyclictest0-21swapper/023:17:110
10286993911,25cyclictest0-21swapper/022:51:490
10286993910,27cyclictest0-21swapper/023:50:040
10286993910,26cyclictest0-21swapper/021:26:450
236532385,13sleep20-21swapper/219:37:202
191482385,13sleep20-21swapper/220:41:282
170252385,13sleep20-21swapper/220:36:442
122602385,13sleep10-21swapper/119:13:371
10287993816,19cyclictest0-21swapper/122:23:431
1028699388,27cyclictest0-21swapper/023:20:180
1028699388,27cyclictest0-21swapper/023:20:180
10286993815,21cyclictest0-21swapper/023:35:100
85452375,13sleep30-21swapper/320:18:073
43552375,13sleep20-21swapper/220:09:402
321852375,13sleep10-21swapper/119:56:321
301162375,13sleep20-21swapper/221:09:442
301162375,13sleep20-21swapper/221:09:432
278072375,13sleep20-21swapper/219:45:422
277332375,13sleep30-21swapper/321:01:383
276592375,13sleep10-21swapper/121:00:401
256952375,13sleep30-21swapper/319:40:583
198342375,13sleep00-21swapper/019:30:040
18502375,13sleep20-21swapper/220:00:502
172922375,13sleep30-21swapper/319:23:143
154032375,13sleep30-21swapper/320:35:073
151972375,13sleep20-21swapper/219:18:562
151972375,13sleep20-21swapper/219:18:562
148012375,13sleep20-21swapper/220:30:572
147752375,13sleep10-21swapper/120:30:361
129762375,13sleep10-21swapper/120:29:561
106442375,13sleep30-21swapper/320:22:253
105202375,13sleep20-21swapper/220:20:512
10286993715,19cyclictest0-21swapper/000:35:580
10286993712,22cyclictest0-21swapper/022:40:080
10286993710,25cyclictest0-21swapper/021:51:160
46482365,13sleep00-21swapper/020:10:020
321392364,13sleep30-21swapper/319:56:023
300782365,12sleep00-21swapper/021:09:180
300782365,12sleep00-21swapper/021:09:170
277652365,13sleep00-21swapper/021:01:590
257362364,13sleep30-21swapper/320:58:213
237852365,13sleep10-21swapper/119:39:001
236002365,13sleep00-21swapper/020:53:330
235992365,13sleep00-21swapper/019:36:380
234212364,13sleep30-21swapper/320:51:213
215152365,12sleep20-21swapper/220:49:142
212192365,12sleep10-21swapper/120:45:361
191542365,12sleep30-21swapper/320:41:333
177092365,13sleep00-21swapper/019:25:040
151102364,13sleep30-21swapper/319:17:483
151102364,13sleep30-21swapper/319:17:483
150462365,13sleep00-21swapper/020:33:520
126372365,12sleep30-21swapper/320:25:413
123482365,13sleep20-21swapper/219:14:472
105042365,13sleep00-21swapper/019:10:070
10287993614,19cyclictest0-21swapper/100:00:131
10287993614,19cyclictest0-21swapper/100:00:131
10287993610,17cyclictest0-21swapper/100:15:371
1028699368,25cyclictest0-21swapper/022:55:170
10286993614,19cyclictest0-21swapper/022:36:100
10286993613,21cyclictest0-21swapper/022:05:060
10286993612,21cyclictest0-21swapper/023:00:250
10286993610,23cyclictest0-21swapper/023:10:110
301822355,12sleep30-21swapper/319:53:413
233552355,10sleep20-21swapper/220:50:262
192212355,12sleep10-21swapper/120:42:231
128632355,12sleep00-21swapper/020:28:310
10288993519,14cyclictest0-21swapper/200:05:052
10288993516,16cyclictest0-21swapper/222:46:502
10288993516,16cyclictest0-21swapper/222:46:502
10288993515,17cyclictest0-21swapper/222:51:262
10288993514,18cyclictest0-21swapper/221:55:372
10286993514,19cyclictest0-21swapper/021:35:150
10286993514,19cyclictest0-21swapper/021:35:150
10286993514,19cyclictest0-21swapper/021:20:290
10286993514,15cyclictest0-21swapper/020:46:520
10286993513,19cyclictest0-21swapper/000:15:310
10286993510,22cyclictest0-21swapper/022:15:210
302462345,10sleep20-21swapper/219:54:282
258212345,10sleep20-21swapper/219:42:292
255512345,10sleep20-21swapper/220:56:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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