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2026-04-24 - 16:52
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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 rackcslot8.osadl.org (updated Fri Apr 24, 2026 12:49:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2346099318120,33cyclictest151rcu_preempt11:39:4421
2346099318120,33cyclictest151rcu_preempt11:39:4421
3273912620,246ptp4l0-21swapper/107:05:161
3273912620,246ptp4l0-21swapper/107:05:161
330891239231,6phc2sys0-21swapper/207:08:2712
330891239231,6phc2sys0-21swapper/207:08:2712
234319923538,1cyclictest151rcu_preempt10:35:0217
233499918610,121cyclictest0-21swapper/1311:39:265
233499918610,121cyclictest0-21swapper/1311:39:265
232669918230,110cyclictest0-21swapper/209:49:0712
232669917635,85cyclictest0-21swapper/209:12:3212
234169917037,133cyclictest0-21swapper/2210:40:1815
233219916749,89cyclictest0-21swapper/911:55:0831
233219916749,89cyclictest0-21swapper/911:55:0831
234169916632,133cyclictest0-21swapper/2211:14:1215
234169916632,133cyclictest0-21swapper/2211:14:1215
220262166158,6sleep110-21swapper/1107:08:283
220262166158,6sleep110-21swapper/1107:08:283
215222164155,7sleep190-21swapper/1907:05:2411
215222164155,7sleep190-21swapper/1907:05:2411
234169916227,134cyclictest0-21swapper/2210:15:1515
232669915832,76cyclictest0-21swapper/212:28:5712
232669915832,76cyclictest0-21swapper/212:28:5712
234169915735,88cyclictest0-21swapper/2211:01:2315
234169915735,88cyclictest0-21swapper/2211:01:2315
234169915622,134cyclictest0-21swapper/2209:38:0015
2332199156154,1cyclictest70-21ksoftirqd/910:00:1431
232609915129,89cyclictest0-21swapper/110:08:001
232609915129,121cyclictest0-21swapper/109:28:011
232609915129,120cyclictest0-21swapper/112:15:191
232609915129,120cyclictest0-21swapper/112:15:191
23312991507,83cyclictest0-21swapper/812:06:0930
23312991507,83cyclictest0-21swapper/812:06:0930
232669914927,81cyclictest0-21swapper/210:21:2912
232669914925,83cyclictest0-21swapper/212:05:4312
232669914925,83cyclictest0-21swapper/212:05:4312
232609914929,119cyclictest0-21swapper/107:34:441
232609914928,95cyclictest0-21swapper/109:41:231
23260991480,88cyclictest0-21swapper/110:21:111
232609914729,65cyclictest0-21swapper/111:29:531
232609914729,65cyclictest0-21swapper/111:29:531
232609914729,107cyclictest0-21swapper/109:14:401
233219914627,90cyclictest0-21swapper/911:08:0631
232669914626,76cyclictest0-21swapper/212:34:3512
232669914626,76cyclictest0-21swapper/212:34:3512
233219914427,80cyclictest0-21swapper/912:22:5631
232669914427,80cyclictest0-21swapper/211:05:1912
234169914325,79cyclictest0-21swapper/2209:47:3615
232609914329,88cyclictest0-21swapper/108:55:121
234169914133,97cyclictest0-21swapper/2211:15:1615
234169914133,97cyclictest0-21swapper/2211:15:1615
232669914049,59cyclictest0-21swapper/207:36:5412
234769913837,73cyclictest0-21swapper/3010:21:2524
233219913849,43cyclictest0-21swapper/910:15:4431
232609913819,86cyclictest0-21swapper/111:18:401
232609913819,86cyclictest0-21swapper/111:18:401
23321991370,82cyclictest0-21swapper/911:23:0431
23321991370,82cyclictest0-21swapper/911:23:0431
23312991370,83cyclictest0-21swapper/809:17:0330
234769913636,55cyclictest0-21swapper/3012:00:1824
234769913636,55cyclictest0-21swapper/3012:00:1824
234169913629,64cyclictest0-21swapper/2210:12:1215
23291991360,114cyclictest0-21swapper/511:34:1427
232669913647,58cyclictest0-21swapper/212:23:5312
232669913629,63cyclictest0-21swapper/212:15:2012
232669913629,63cyclictest0-21swapper/212:15:2012
232669913626,67cyclictest0-21swapper/210:18:1712
232609913629,78cyclictest0-21swapper/109:45:351
234169913527,65cyclictest0-21swapper/2210:51:4515
232669913552,57cyclictest0-21swapper/211:37:4112
232669913552,57cyclictest0-21swapper/211:37:4112
232669913510,72cyclictest0-21swapper/209:00:3012
232609913522,72cyclictest0-21swapper/112:10:451
232609913522,72cyclictest0-21swapper/112:10:451
232669913445,53cyclictest0-21swapper/207:59:2012
234169913341,60cyclictest0-21swapper/2208:04:2915
234169913326,72cyclictest0-21swapper/2211:26:2915
234169913326,72cyclictest0-21swapper/2211:26:2915
23312991320,80cyclictest0-21swapper/809:25:1630
232669913256,62cyclictest0-21swapper/209:15:4512
232669913255,63cyclictest0-21swapper/211:52:2112
232669913255,63cyclictest0-21swapper/211:52:2112
232669913241,59cyclictest0-21swapper/210:58:4012
232669913241,59cyclictest0-21swapper/210:58:4012
232669913228,69cyclictest0-21swapper/211:58:4512
232669913228,69cyclictest0-21swapper/211:58:4512
232669913228,66cyclictest0-21swapper/209:35:1712
232669913227,68cyclictest0-21swapper/208:35:4012
232669913227,65cyclictest0-21swapper/212:11:3612
232669913227,65cyclictest0-21swapper/212:11:3612
232609913229,79cyclictest0-21swapper/108:11:361
234169913148,58cyclictest0-21swapper/2210:36:1515
233219913128,57cyclictest0-21swapper/909:45:4831
232669913147,54cyclictest0-21swapper/211:25:3812
232669913147,54cyclictest0-21swapper/211:25:3812
232669913138,58cyclictest0-21swapper/210:05:2712
232669913127,67cyclictest0-21swapper/211:33:2112
234769913029,84cyclictest0-21swapper/3010:06:5924
234169913048,53cyclictest0-21swapper/2211:07:1515
234169913044,57cyclictest0-21swapper/2209:26:1415
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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