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2026-05-02 - 11:20
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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 Sat May 02, 2026 00:48:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
330891387379,6phc2sys0-21swapper/219:05:2012
82209922023,1cyclictest151rcu_preempt23:40:560
83629921921,1cyclictest151rcu_preempt23:55:5813
3273912190,206ptp4l0-21swapper/119:05:211
83479918419,137cyclictest0-21swapper/1723:55:029
83479918418,143cyclictest0-21swapper/1721:55:189
83479918318,164cyclictest0-21swapper/1719:40:389
83479918318,164cyclictest0-21swapper/1719:40:389
83479918018,129cyclictest0-21swapper/1700:39:559
83479917918,118cyclictest0-21swapper/1723:17:229
8253991766,148cyclictest0-21swapper/523:25:1927
8253991746,110cyclictest0-21swapper/522:40:0027
83389917244,103cyclictest0-21swapper/1623:43:348
83479916618,92cyclictest0-21swapper/1722:15:059
83389916434,95cyclictest0-21swapper/1621:59:368
82459916459,83cyclictest0-21swapper/421:27:0426
83389916132,90cyclictest0-21swapper/1619:45:208
83389916132,90cyclictest0-21swapper/1619:45:208
8253991616,107cyclictest0-21swapper/521:23:3427
83479915918,99cyclictest0-21swapper/1721:30:119
8398991588,135cyclictest24079-21grep22:10:1321
8398991578,38cyclictest0-21swapper/2823:06:2421
8398991568,147cyclictest0-21swapper/2821:22:0921
8398991568,127cyclictest0-21swapper/2800:22:4821
8398991558,146cyclictest0-21swapper/2800:35:1921
83389915545,76cyclictest0-21swapper/1623:25:258
8398991548,129cyclictest0-21swapper/2821:53:2221
8398991538,144cyclictest0-21swapper/2823:10:0921
83479915318,86cyclictest0-21swapper/1723:05:199
83389915330,74cyclictest0-21swapper/1622:44:478
8253991516,110cyclictest0-21swapper/500:13:5027
8253991485,94cyclictest0-21swapper/519:50:0027
8253991485,94cyclictest0-21swapper/519:49:5927
8245991470,87cyclictest0-21swapper/420:35:1526
8291991461,144cyclictest0-21swapper/1023:47:002
8291991461,144cyclictest0-21swapper/1022:45:122
8291991461,140cyclictest0-21swapper/1022:32:222
8347991450,85cyclictest0-21swapper/1723:46:289
8291991451,143cyclictest0-21swapper/1023:50:062
8291991451,128cyclictest0-21swapper/1019:22:272
8291991451,128cyclictest0-21swapper/1019:22:272
8291991451,113cyclictest0-21swapper/1022:18:102
83479914418,125cyclictest0-21swapper/1722:45:009
8291991441,106cyclictest0-21swapper/1023:18:012
8291991441,106cyclictest0-21swapper/1022:44:592
8253991446,86cyclictest0-21swapper/521:18:1327
8398991438,96cyclictest0-21swapper/2800:15:0921
83389914123,98cyclictest0-21swapper/1623:46:198
84239914032,69cyclictest0-21swapper/3100:02:1225
84239914029,74cyclictest0-21swapper/3123:56:5125
8338991400,85cyclictest0-21swapper/1621:12:528
8245991400,87cyclictest0-21swapper/423:33:2826
8423991390,82cyclictest0-21swapper/3120:25:1225
8352991385,90cyclictest0-21swapper/1800:15:5310
82459913834,82cyclictest0-21swapper/421:37:1226
83479913718,86cyclictest0-21swapper/1723:27:459
8253991375,87cyclictest0-21swapper/521:11:1627
84239913629,68cyclictest0-21swapper/3123:40:1825
8352991364,104cyclictest0-21swapper/1800:23:5410
83479913648,64cyclictest0-21swapper/1721:12:009
82699913531,102cyclictest0-21swapper/722:42:5129
84239913447,61cyclictest0-21swapper/3123:00:1225
84239913431,70cyclictest0-21swapper/3122:55:2425
84239913429,69cyclictest0-21swapper/3100:16:0525
84239913418,65cyclictest0-21swapper/3122:39:5425
83479913448,56cyclictest0-21swapper/1700:15:209
8253991346,85cyclictest0-21swapper/521:33:4327
82459913423,84cyclictest0-21swapper/422:16:4826
84239913331,71cyclictest0-21swapper/3100:14:3025
84239913330,74cyclictest0-21swapper/3119:41:5625
84239913330,74cyclictest0-21swapper/3119:41:5625
84239913330,69cyclictest0-21swapper/3123:10:2125
84239913327,70cyclictest0-21swapper/3120:24:4125
84239913326,64cyclictest0-21swapper/3122:21:4325
84239913320,69cyclictest0-21swapper/3123:36:3125
8423991330,79cyclictest0-21swapper/3122:30:1725
8352991334,94cyclictest0-21swapper/1800:25:1610
83479913344,58cyclictest0-21swapper/1722:58:069
83389913347,51cyclictest0-21swapper/1621:17:088
84239913232,78cyclictest0-21swapper/3123:24:4825
84239913230,75cyclictest0-21swapper/3120:50:2025
84239913229,65cyclictest0-21swapper/3122:45:1525
84239913219,77cyclictest0-21swapper/3119:29:3925
84239913219,77cyclictest0-21swapper/3119:29:3925
84239913214,74cyclictest0-21swapper/3122:40:5825
8352991320,75cyclictest0-21swapper/1822:55:1110
83479913218,82cyclictest0-21swapper/1720:30:199
84239913147,54cyclictest0-21swapper/3123:47:1525
84239913130,74cyclictest0-21swapper/3121:11:4225
84239913127,66cyclictest0-21swapper/3121:40:0225
84239913125,69cyclictest0-21swapper/3100:05:2525
8398991318,111cyclictest0-21swapper/2821:47:4821
83479913151,56cyclictest0-21swapper/1700:34:349
83479913150,57cyclictest0-21swapper/1721:28:039
83479913130,69cyclictest0-21swapper/1722:52:299
83479913130,69cyclictest0-21swapper/1700:03:539
83479913127,68cyclictest0-21swapper/1700:13:449
83479913118,71cyclictest0-21swapper/1722:12:109
82699913129,100cyclictest0-21swapper/720:55:1729
82539913122,67cyclictest0-21swapper/522:01:1727
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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