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2026-07-24 - 16:42
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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 Jul 24, 2026 12:49:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
57459924043,3cyclictest151rcu_preempt10:05:1618
57459923843,49cyclictest151rcu_preempt11:54:1818
57459923843,49cyclictest151rcu_preempt11:54:1818
3273912340,227ptp4l0-21swapper/107:06:141
3273912340,227ptp4l0-21swapper/107:06:141
5671991800,175cyclictest151rcu_preempt07:20:285
56619918028,143cyclictest0-21swapper/1211:01:444
56619917819,152cyclictest0-21swapper/1212:22:134
56619917819,152cyclictest0-21swapper/1212:22:134
56619917726,101cyclictest0-21swapper/1211:51:544
56619917726,101cyclictest0-21swapper/1211:51:544
56619917625,121cyclictest0-21swapper/1209:52:014
56619916929,104cyclictest0-21swapper/1211:34:374
56619916929,104cyclictest0-21swapper/1211:34:374
5589991674,135cyclictest0-21swapper/310:15:0223
5639991630,148cyclictest151rcu_preempt11:55:0631
5639991630,148cyclictest151rcu_preempt11:55:0531
56619916021,107cyclictest0-21swapper/1210:56:424
5589991604,98cyclictest0-21swapper/312:00:2123
5589991604,98cyclictest0-21swapper/312:00:2023
5589991594,139cyclictest0-21swapper/310:50:2023
5589991554,110cyclictest0-21swapper/312:26:1323
5589991554,110cyclictest0-21swapper/312:26:1323
56619915428,84cyclictest0-21swapper/1210:20:234
5583991536,144cyclictest151rcu_preempt11:36:1712
5589991514,102cyclictest0-21swapper/312:30:1723
5589991514,102cyclictest0-21swapper/312:30:1723
56619914922,92cyclictest0-21swapper/1211:45:214
56619914922,92cyclictest0-21swapper/1211:45:214
5639991471,142cyclictest151rcu_preempt10:36:3231
5589991464,135cyclictest0-21swapper/311:50:0323
5589991464,135cyclictest0-21swapper/311:50:0323
5729991450,86cyclictest0-21swapper/2309:50:1616
5661991441,85cyclictest0-21swapper/1209:45:014
5627991440,87cyclictest0-21swapper/812:10:2330
5627991440,87cyclictest0-21swapper/812:10:2230
5729991420,83cyclictest0-21swapper/2310:27:0916
55779914246,83cyclictest0-21swapper/111:18:381
57299914143,65cyclictest0-21swapper/2310:09:2916
5729991410,84cyclictest0-21swapper/2311:15:4716
56399914129,84cyclictest0-21swapper/912:38:5631
56399914129,84cyclictest0-21swapper/912:38:5531
55779914146,56cyclictest0-21swapper/107:30:121
5758991400,80cyclictest0-21swapper/2712:26:2420
5758991400,80cyclictest0-21swapper/2712:26:2420
5671991400,87cyclictest0-21swapper/1310:38:445
56399914033,78cyclictest0-21swapper/909:19:0231
5724991391,76cyclictest0-21swapper/2209:00:1715
56719913954,58cyclictest0-21swapper/1310:51:345
5639991391,84cyclictest0-21swapper/910:49:2131
57669913820,29cyclictest151rcu_preempt09:34:4021
57299913851,59cyclictest0-21swapper/2311:31:4916
57299913851,59cyclictest0-21swapper/2311:31:4916
57299913849,62cyclictest0-21swapper/2312:37:0116
57299913849,62cyclictest0-21swapper/2312:37:0116
5661991380,85cyclictest0-21swapper/1212:30:164
5661991380,85cyclictest0-21swapper/1212:30:164
5729991370,78cyclictest0-21swapper/2307:55:2216
5671991370,84cyclictest0-21swapper/1310:32:205
56619913728,72cyclictest0-21swapper/1211:18:364
56279913728,45cyclictest0-21swapper/808:40:0030
5729991361,84cyclictest0-21swapper/2309:37:2616
5639991361,85cyclictest0-21swapper/910:25:1931
5639991361,84cyclictest0-21swapper/910:54:1031
5729991350,81cyclictest0-21swapper/2311:55:5016
5729991350,81cyclictest0-21swapper/2311:55:5016
5729991350,78cyclictest0-21swapper/2310:45:1916
5724991350,87cyclictest0-21swapper/2209:45:2015
56719913525,63cyclictest0-21swapper/1311:15:045
5639991355,71cyclictest0-21swapper/912:10:0431
5639991355,71cyclictest0-21swapper/912:10:0331
55779913536,98cyclictest0-21swapper/111:10:231
5729991340,83cyclictest0-21swapper/2309:33:0816
56719913431,68cyclictest0-21swapper/1309:55:585
55899913434,92cyclictest0-21swapper/311:17:5123
56719913361,61cyclictest0-21swapper/1311:40:165
56719913361,61cyclictest0-21swapper/1311:40:155
56719913344,53cyclictest0-21swapper/1308:00:005
56719913332,67cyclictest0-21swapper/1310:12:335
56719913330,77cyclictest0-21swapper/1307:54:075
56719913329,60cyclictest0-21swapper/1312:19:465
56719913329,60cyclictest0-21swapper/1312:19:465
56719913328,61cyclictest0-21swapper/1309:25:315
56719913327,67cyclictest0-21swapper/1308:42:505
56719913326,68cyclictest0-21swapper/1307:34:225
57299913227,67cyclictest0-21swapper/2310:32:3016
5729991320,79cyclictest0-21swapper/2312:00:0916
5729991320,79cyclictest0-21swapper/2312:00:0916
56719913231,67cyclictest0-21swapper/1309:17:305
56719913229,68cyclictest0-21swapper/1310:22:425
56719913229,68cyclictest0-21swapper/1309:45:175
56719913228,68cyclictest0-21swapper/1310:05:045
56619913249,55cyclictest0-21swapper/1209:34:284
56619913227,64cyclictest0-21swapper/1210:42:004
57299913132,69cyclictest0-21swapper/2311:37:4216
56719913130,70cyclictest0-21swapper/1307:12:275
56719913129,67cyclictest0-21swapper/1308:06:265
56719913128,66cyclictest0-21swapper/1312:30:275
56719913128,66cyclictest0-21swapper/1312:30:275
56719913127,69cyclictest0-21swapper/1309:36:495
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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