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2025-12-12 - 12:51
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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 Dec 12, 2025 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
783212358,59sleep30-21swapper/319:08:563
513211151,55sleep00-21swapper/019:05:400
762210951,20sleep20-21swapper/219:08:402
714210353,45sleep10-21swapper/119:08:051
317632600,1sleep222465-21stress22:44:462
999994217,22cyclictest0-21swapper/023:05:360
999994217,22cyclictest0-21swapper/023:05:360
999994015,22cyclictest0-21swapper/022:55:020
999993919,17cyclictest0-21swapper/021:20:020
999993918,18cyclictest0-21swapper/000:25:000
999993916,20cyclictest0-21swapper/021:10:250
999993915,17cyclictest0-21swapper/021:44:180
999993818,17cyclictest0-21swapper/000:25:220
999993817,19cyclictest0-21swapper/023:15:260
999993816,19cyclictest0-21swapper/000:05:220
999993815,21cyclictest0-21swapper/000:15:190
999993815,21cyclictest0-21swapper/000:15:180
999993814,21cyclictest0-21swapper/021:25:000
999993814,21cyclictest0-21swapper/021:25:000
999993813,22cyclictest0-21swapper/021:55:360
999993813,22cyclictest0-21swapper/021:55:350
81452385,13sleep30-21swapper/319:22:443
65482385,13sleep30-21swapper/320:31:403
58442385,13sleep30-21swapper/319:16:433
253222380,1sleep025323-21latency_hist22:30:020
236682385,13sleep30-21swapper/319:57:443
999993717,18cyclictest0-21swapper/023:40:360
999993717,18cyclictest0-21swapper/023:40:360
999993717,17cyclictest0-21swapper/022:10:170
999993715,15cyclictest0-21swapper/022:30:320
999993715,15cyclictest0-21swapper/022:30:310
999993714,20cyclictest0-21swapper/021:45:350
999993714,20cyclictest0-21swapper/021:45:350
22772375,13sleep30-21swapper/320:23:063
175652375,13sleep30-21swapper/320:56:033
169732375,13sleep20-21swapper/219:42:152
99999364,29cyclictest0-21swapper/000:30:170
999993617,17cyclictest0-21swapper/022:05:010
999993617,17cyclictest0-21swapper/022:05:000
999993617,17cyclictest0-21swapper/021:35:350
999993617,17cyclictest0-21swapper/000:00:370
999993617,16cyclictest0-21swapper/023:45:130
999993617,16cyclictest0-21swapper/023:45:120
999993615,18cyclictest0-21swapper/023:00:220
999993615,18cyclictest0-21swapper/023:00:220
323002365,12sleep30-21swapper/320:15:333
29732365,12sleep20-21swapper/219:13:012
236762365,12sleep10-21swapper/119:57:501
222452365,12sleep20-21swapper/221:08:242
110532365,12sleep10-21swapper/120:42:301
110532365,12sleep10-21swapper/120:42:301
100099366,27cyclictest0-21swapper/123:14:121
100099366,27cyclictest0-21swapper/123:14:121
99999358,25cyclictest0-21swapper/019:50:030
999993517,16cyclictest0-21swapper/021:30:310
999993517,16cyclictest0-21swapper/021:25:210
999993517,16cyclictest0-21swapper/021:25:210
999993517,15cyclictest0-21swapper/022:05:230
999993517,15cyclictest0-21swapper/022:05:230
999993515,17cyclictest0-21swapper/022:15:140
999993515,17cyclictest0-21swapper/000:10:200
999993514,18cyclictest0-21swapper/023:55:210
280002355,12sleep20-21swapper/220:06:262
149192355,12sleep20-21swapper/219:39:192
108692350,1sleep322463-21stress00:24:013
105232355,12sleep10-21swapper/119:29:481
1002993515,17cyclictest0-21swapper/321:25:413
1002993515,17cyclictest0-21swapper/321:25:413
1001993512,20cyclictest0-21swapper/221:23:282
1001993512,20cyclictest0-21swapper/221:23:272
1001993510,23cyclictest0-21swapper/220:45:192
1001993510,22cyclictest0-21swapper/221:37:482
1000993512,17cyclictest0-21swapper/120:55:221
99999348,24cyclictest0-21swapper/020:31:240
999993418,14cyclictest0-21swapper/023:25:280
999993417,15cyclictest0-21swapper/022:35:130
999993417,14cyclictest0-21swapper/022:23:140
999993416,16cyclictest0-21swapper/022:55:220
999993414,17cyclictest0-21swapper/022:40:290
999993413,19cyclictest0-21swapper/000:35:210
999993412,20cyclictest0-21swapper/020:00:230
999993410,21cyclictest0-21swapper/023:30:140
27022345,13sleep20-21swapper/220:25:102
235792345,11sleep20-21swapper/219:56:392
223192345,12sleep10-21swapper/121:09:161
214692345,12sleep10-21swapper/119:53:061
148902345,10sleep30-21swapper/319:38:593
123932345,12sleep20-21swapper/219:30:452
100299348,23cyclictest0-21swapper/322:21:333
1000993414,17cyclictest0-21swapper/123:44:181
1000993414,17cyclictest0-21swapper/123:44:181
999993316,15cyclictest0-21swapper/023:20:150
999993310,21cyclictest0-21swapper/020:05:240
59672335,11sleep10-21swapper/119:18:091
100299337,23cyclictest0-21swapper/323:00:213
100299337,23cyclictest0-21swapper/323:00:203
1002993315,15cyclictest0-21swapper/322:45:013
1001993315,15cyclictest0-21swapper/222:15:342
1001993311,19cyclictest0-21swapper/223:38:152
100099336,24cyclictest0-21swapper/122:41:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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