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2026-05-27 - 23:08
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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 Wed May 27, 2026 12:49:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912940,286ptp4l0-21swapper/107:08:581
3273912940,286ptp4l0-21swapper/107:08:581
164979923438,1cyclictest151rcu_preempt10:18:188
16511991958,127cyclictest0-21swapper/1909:16:3211
16433991810,160cyclictest151rcu_preempt11:07:470
16438991751,170cyclictest151rcu_preempt11:17:041
16466991600,77cyclictest0-21swapper/809:45:2230
165899915920,89cyclictest0-21swapper/3007:55:1924
16466991430,84cyclictest0-21swapper/807:35:1330
16479991420,89cyclictest0-21swapper/1107:25:183
164389914121,76cyclictest0-21swapper/109:10:241
16466991400,82cyclictest0-21swapper/810:29:5830
164339913910,128cyclictest13-21ksoftirqd/010:39:250
164669913843,59cyclictest0-21swapper/812:03:1130
164669913843,59cyclictest0-21swapper/812:03:1130
16466991380,82cyclictest0-21swapper/807:50:3030
16466991380,80cyclictest0-21swapper/811:05:1430
16466991370,78cyclictest0-21swapper/811:50:1230
16466991370,78cyclictest0-21swapper/811:50:1130
164669913644,58cyclictest0-21swapper/808:20:1130
164669913630,66cyclictest0-21swapper/809:10:1830
164669913628,68cyclictest0-21swapper/808:30:1830
16466991360,80cyclictest0-21swapper/808:45:1430
164669913529,65cyclictest0-21swapper/812:39:0030
164669913529,65cyclictest0-21swapper/812:39:0030
16466991350,79cyclictest0-21swapper/810:50:1630
164669913454,67cyclictest0-21swapper/810:35:1130
164669913447,69cyclictest0-21swapper/812:06:1130
164669913447,69cyclictest0-21swapper/812:06:1030
164669913430,60cyclictest0-21swapper/808:05:4030
164669913428,63cyclictest0-21swapper/811:20:5830
164389913425,80cyclictest0-21swapper/112:26:231
164389913425,80cyclictest0-21swapper/112:26:231
164669913330,69cyclictest0-21swapper/811:59:4530
164669913330,69cyclictest0-21swapper/811:59:4530
164669913328,67cyclictest0-21swapper/811:30:1330
16466991331,82cyclictest0-21swapper/812:30:2830
16466991331,82cyclictest0-21swapper/812:30:2830
16466991330,84cyclictest0-21swapper/811:18:3330
16438991333,77cyclictest0-21swapper/108:51:251
16511991329,118cyclictest0-21swapper/1910:51:0911
164669913232,66cyclictest0-21swapper/809:32:2930
164669913231,65cyclictest0-21swapper/810:00:0130
164669913229,63cyclictest0-21swapper/811:40:1230
16466991320,77cyclictest0-21swapper/810:42:0430
165819913133,55cyclictest0-21swapper/2908:53:0122
164669913149,69cyclictest0-21swapper/807:30:0030
164669913132,67cyclictest0-21swapper/809:22:3830
164669913128,68cyclictest0-21swapper/807:30:2330
164389913148,66cyclictest0-21swapper/109:49:571
16511991308,91cyclictest0-21swapper/1912:17:1411
16511991308,91cyclictest0-21swapper/1912:17:1411
16511991308,107cyclictest0-21swapper/1910:30:2111
164669913029,60cyclictest0-21swapper/807:45:2230
16511991298,88cyclictest0-21swapper/1910:20:1111
164669912948,49cyclictest0-21swapper/811:12:1030
164669912943,53cyclictest0-21swapper/812:15:4630
164669912943,53cyclictest0-21swapper/812:15:4530
164669912927,69cyclictest0-21swapper/807:55:1730
164799912833,81cyclictest0-21swapper/1111:45:013
164669912828,61cyclictest0-21swapper/809:16:1030
164669912827,64cyclictest0-21swapper/812:10:0330
164669912827,64cyclictest0-21swapper/812:10:0230
164669912827,59cyclictest0-21swapper/812:20:0630
164669912827,59cyclictest0-21swapper/812:20:0530
164669912813,64cyclictest0-21swapper/809:25:1730
164389912837,72cyclictest0-21swapper/108:35:401
16438991280,75cyclictest0-21swapper/107:37:591
165899912740,42cyclictest0-21swapper/3007:26:4124
164669912745,52cyclictest0-21swapper/811:47:2730
164669912734,73cyclictest0-21swapper/808:15:1930
164669912731,73cyclictest0-21swapper/810:06:2730
164669912727,62cyclictest0-21swapper/812:25:2430
164669912727,62cyclictest0-21swapper/812:25:2430
16511991269,75cyclictest0-21swapper/1911:49:2511
16466991260,76cyclictest0-21swapper/808:55:2230
164389912644,55cyclictest0-21swapper/110:53:501
164669912529,63cyclictest0-21swapper/810:21:1230
16466991250,74cyclictest0-21swapper/809:35:4630
164389912550,57cyclictest0-21swapper/110:22:521
165579912464,18cyclictest0-21swapper/2611:41:3219
164389912441,56cyclictest0-21swapper/108:13:151
164389912427,64cyclictest0-21swapper/109:32:191
164389912425,69cyclictest0-21swapper/112:21:011
164389912425,69cyclictest0-21swapper/112:21:001
16581991230,86cyclictest0-21swapper/2912:21:4122
16581991230,86cyclictest0-21swapper/2912:21:4122
16511991238,87cyclictest0-21swapper/1911:00:1411
16511991238,65cyclictest18456-21timerwakeupswit12:35:2411
16511991238,65cyclictest18456-21timerwakeupswit12:35:2411
164799912330,49cyclictest0-21swapper/1110:45:103
16466991237,68cyclictest0-21swapper/811:36:1130
16466991237,68cyclictest0-21swapper/811:36:1130
16466991230,71cyclictest0-21swapper/810:49:1230
164389912342,54cyclictest0-21swapper/111:40:031
164389912341,58cyclictest0-21swapper/111:25:241
164389912324,60cyclictest0-21swapper/108:34:551
164389912323,62cyclictest0-21swapper/110:10:051
164389912323,59cyclictest0-21swapper/107:26:121
164339912320,37cyclictest0-21swapper/009:11:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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