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2026-05-23 - 01:18
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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 rack0slot5.osadl.org (updated Sat May 23, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
381938299492433,29cyclictest0-21swapper/023:07:190
38193949948518,466cyclictest0-21swapper/323:48:589
381938299485426,29cyclictest0-21swapper/019:54:200
381941099478477,1cyclictest4058798-21kworker/7:1+i915-unordered00:08:5813
38193979947225,29cyclictest0-21swapper/420:45:2010
38194449947123,29cyclictest0-21swapper/1500:14:227
38193979947123,29cyclictest0-21swapper/420:19:4510
38193979947123,28cyclictest0-21swapper/419:35:2210
381941699470467,2cyclictest3989580-21kworker/9:0+i915-unordered23:11:5815
38193979947022,29cyclictest0-21swapper/419:40:2010
38193979946924,28cyclictest0-21swapper/421:10:2010
38193979946924,28cyclictest0-21swapper/421:10:2010
38193979946922,29cyclictest0-21swapper/421:59:4310
38194449946724,30cyclictest0-21swapper/1523:16:217
38194449946718,28cyclictest0-21swapper/1519:32:217
38193979946721,29cyclictest0-21swapper/420:37:4110
38193979946720,29cyclictest0-21swapper/420:11:4210
38194449946619,29cyclictest0-21swapper/1521:56:217
38193979946618,29cyclictest0-21swapper/422:14:2010
38193979946618,29cyclictest0-21swapper/421:37:4010
38193979946618,29cyclictest0-21swapper/421:19:4410
38193949946525,30cyclictest0-21swapper/323:33:589
3819444994647,58cyclictest0-21swapper/1519:46:217
38193979946417,29cyclictest0-21swapper/400:08:2110
3819416994630,462cyclictest0-21swapper/922:29:5815
38194449946211,30cyclictest0-21swapper/1522:05:217
38193979946118,30cyclictest0-21swapper/419:30:5910
3819382994611,59cyclictest0-21swapper/021:59:580
38193829946012,29cyclictest0-21swapper/000:24:420
38194449945915,29cyclictest0-21swapper/1521:45:217
3819444994588,29cyclictest0-21swapper/1521:51:217
381939799458457,1cyclictest0-21swapper/400:15:2210
38193949945817,29cyclictest0-21swapper/321:04:589
3819444994568,30cyclictest0-21swapper/1519:37:217
381940299456454,2cyclictest3928658-21kworker/5:0+i915-unordered21:21:5911
381938699456455,1cyclictest69750irq/159-i91523:11:581
3819444994557,30cyclictest0-21swapper/1520:19:217
381941099454452,2cyclictest4021685-21kworker/7:0+i915-unordered23:21:5813
381943999453450,3cyclictest1818-21snmpd21:49:526
381941699453450,2cyclictest3989580-21kworker/9:0+i915-unordered22:48:5815
38193949945312,30cyclictest0-21swapper/320:25:589
381941699452451,1cyclictest0-21swapper/923:40:5815
381940599452451,1cyclictest3928797-21kworker/6:0+i915-unordered21:25:5912
3819397994511,30cyclictest0-21swapper/421:07:4010
381943799450449,1cyclictest69750irq/159-i91521:21:595
3819397994491,28cyclictest0-21swapper/422:07:4210
381938699449448,1cyclictest69750irq/159-i91522:29:581
3819382994490,29cyclictest0-21swapper/023:53:190
3819382994490,29cyclictest0-21swapper/023:53:190
38194289944826,421cyclictest0-21swapper/1123:25:213
38194289944825,422cyclictest0-21swapper/1121:31:443
3819397994480,30cyclictest0-21swapper/422:31:4310
381940599447445,2cyclictest4077828-21kworker/6:2+i915-unordered00:28:5812
38194289944626,419cyclictest0-21swapper/1123:32:213
38194289944626,419cyclictest0-21swapper/1100:02:193
38194289944626,419cyclictest0-21swapper/1100:02:193
381941699446443,2cyclictest3943560-21kworker/u64:10+events_unbound21:56:5815
38194289944525,419cyclictest0-21swapper/1120:29:193
38194289944524,420cyclictest0-21swapper/1119:51:423
38194289944425,418cyclictest0-21swapper/1123:48:423
38194289944424,419cyclictest0-21swapper/1123:33:413
38194289944422,421cyclictest0-21swapper/1123:21:213
38194289944321,419cyclictest0-21swapper/1120:51:423
38194289944222,419cyclictest0-21swapper/1122:29:423
38194289944221,420cyclictest0-21swapper/1120:35:213
38194289944221,418cyclictest0-21swapper/1122:11:223
3819416994422,439cyclictest0-21swapper/923:21:5815
381940299442412,30cyclictest0-21swapper/523:40:5811
381939499442442,0cyclictest0-21swapper/323:22:429
38194449944124,416cyclictest0-21swapper/1500:12:197
38194449944123,417cyclictest0-21swapper/1523:51:197
38194449944122,416cyclictest0-21swapper/1521:25:217
38194289944121,418cyclictest0-21swapper/1120:09:413
38194449944023,414cyclictest0-21swapper/1523:19:207
381943799440438,2cyclictest4037772-21kworker/13:2+i915-unordered23:40:585
38194289944018,418cyclictest0-21swapper/1121:13:413
38194289944018,418cyclictest0-21swapper/1121:13:413
381941699440437,2cyclictest3948922-21kworker/9:2+i915-unordered22:08:5815
38193979944019,0cyclictest0-21swapper/422:11:4510
381938699440439,1cyclictest69750irq/159-i91523:40:581
381938699440438,2cyclictest69750irq/159-i91522:48:581
38193829944023,415cyclictest0-21swapper/020:15:200
38194449943926,410cyclictest0-21swapper/1521:39:587
38194289943921,418cyclictest0-21swapper/1122:15:403
3819416994390,438cyclictest0-21swapper/923:34:5815
381940599439438,1cyclictest0-21swapper/621:49:5212
381940299439438,1cyclictest0-21swapper/522:29:5811
38194449943818,417cyclictest0-21swapper/1522:36:207
38194289943817,419cyclictest0-21swapper/1122:23:433
38194289943815,422cyclictest0-21swapper/1121:20:403
381939199438435,3cyclictest1818-21snmpd23:54:548
381939199438435,3cyclictest1818-21snmpd23:54:548
38193979943716,420cyclictest0-21swapper/423:24:4110
381939499437434,2cyclictest1818-21snmpd23:45:539
38193949943716,420cyclictest0-21swapper/319:58:219
38194289943617,419cyclictest0-21swapper/1121:05:423
381941699436434,1cyclictest0-21swapper/923:48:5815
38193979943622,413cyclictest0-21swapper/422:43:2110
381943799435433,2cyclictest3981235-21kworker/13:1+i915-unordered22:29:585
38194289943515,418cyclictest0-21swapper/1120:21:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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