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2026-04-29 - 07:37
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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 Apr 29, 2026 00:49:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2136599488457,28cyclictest4667-21lspci19:16:3330
2147199360162,2cyclictest151rcu_preempt22:53:0918
2147199360162,2cyclictest151rcu_preempt22:53:0918
3273912600,251ptp4l0-21swapper/119:08:351
2148799177176,0cyclictest179-21ksoftirqd/2700:10:4020
186632177168,7sleep310-21swapper/3119:05:2125
330891175167,6phc2sys0-21swapper/219:07:2412
214879917320,116cyclictest0-21swapper/2723:50:5320
213539916214,97cyclictest13034-21latency_hist00:05:0029
214569916130,112cyclictest0-21swapper/2323:41:1316
214359916022,72cyclictest151rcu_preempt21:05:2613
214569915634,59cyclictest0-21swapper/2300:35:1116
214569915631,69cyclictest0-21swapper/2321:40:2616
214569915631,69cyclictest0-21swapper/2321:40:2516
213179915220,105cyclictest0-21swapper/121:25:011
213659915117,132cyclictest0-21swapper/822:33:2430
213659915117,132cyclictest0-21swapper/822:33:2430
213659915017,132cyclictest0-21swapper/822:39:0030
213659915017,132cyclictest0-21swapper/822:39:0030
213659915017,119cyclictest0-21swapper/820:10:1430
213659914816,116cyclictest0-21swapper/823:36:5830
213659914716,98cyclictest0-21swapper/820:35:2330
213659914516,127cyclictest0-21swapper/823:55:1230
214569914328,63cyclictest0-21swapper/2322:45:0616
214569914328,63cyclictest0-21swapper/2322:45:0616
213659914217,81cyclictest0-21swapper/819:55:1530
214719914128,47cyclictest167-21ksoftirqd/2523:09:4318
214719914128,47cyclictest167-21ksoftirqd/2523:09:4218
214569914131,54cyclictest0-21swapper/2321:50:0116
21418991410,87cyclictest0-21swapper/1823:56:0610
213659914117,91cyclictest0-21swapper/823:32:2730
213179914146,61cyclictest0-21swapper/119:13:391
213179914051,60cyclictest0-21swapper/100:23:371
21471991390,84cyclictest0-21swapper/2520:15:1418
21435991390,85cyclictest0-21swapper/2022:50:1813
21435991390,85cyclictest0-21swapper/2022:50:1713
213659913917,90cyclictest0-21swapper/800:16:3530
21317991390,88cyclictest0-21swapper/121:45:111
21317991390,88cyclictest0-21swapper/121:45:111
21317991390,82cyclictest0-21swapper/123:30:101
21435991380,83cyclictest0-21swapper/2020:25:2213
213969913842,60cyclictest0-21swapper/1522:01:087
213969913842,60cyclictest0-21swapper/1522:01:087
21435991372,131cyclictest151rcu_preempt19:18:0213
213809913755,59cyclictest0-21swapper/1200:32:434
213179913751,62cyclictest0-21swapper/122:11:041
213179913751,62cyclictest0-21swapper/122:11:041
213179913729,71cyclictest0-21swapper/119:39:001
213179913729,70cyclictest0-21swapper/123:47:161
214719913654,70cyclictest0-21swapper/2519:20:1418
213969913646,60cyclictest0-21swapper/1521:49:557
213969913646,60cyclictest0-21swapper/1521:49:557
213969913627,64cyclictest0-21swapper/1522:17:107
213969913627,64cyclictest0-21swapper/1522:17:097
213809913643,65cyclictest0-21swapper/1219:30:154
214569913520,72cyclictest0-21swapper/2321:45:4616
214359913513,88cyclictest0-21swapper/2022:30:2513
214359913513,88cyclictest0-21swapper/2022:30:2513
213659913520,90cyclictest151rcu_preempt00:12:5230
213179913551,60cyclictest0-21swapper/123:42:591
214569913430,68cyclictest0-21swapper/2300:00:2616
214569913429,69cyclictest0-21swapper/2321:14:3816
214569913427,63cyclictest0-21swapper/2322:37:0416
214569913427,63cyclictest0-21swapper/2322:37:0416
213969913435,66cyclictest0-21swapper/1519:51:487
213969913427,65cyclictest0-21swapper/1520:15:527
213809913450,58cyclictest0-21swapper/1222:15:244
213809913450,58cyclictest0-21swapper/1222:15:234
213809913447,66cyclictest0-21swapper/1220:00:244
213659913415,90cyclictest0-21swapper/820:50:1630
213179913454,66cyclictest0-21swapper/121:17:051
213179913431,76cyclictest0-21swapper/122:42:361
213179913429,69cyclictest0-21swapper/122:59:451
213179913429,68cyclictest0-21swapper/121:13:201
213179913415,75cyclictest0-21swapper/120:50:211
214879913342,61cyclictest0-21swapper/2720:35:0020
214569913347,53cyclictest0-21swapper/2321:16:5516
214569913328,64cyclictest0-21swapper/2320:59:4116
214569913326,64cyclictest0-21swapper/2322:08:4516
214569913326,64cyclictest0-21swapper/2322:08:4416
213969913329,73cyclictest0-21swapper/1521:10:547
213969913329,72cyclictest0-21swapper/1522:20:557
213969913329,71cyclictest0-21swapper/1521:43:307
213969913329,71cyclictest0-21swapper/1521:43:307
213969913329,68cyclictest0-21swapper/1523:34:067
213969913328,74cyclictest0-21swapper/1520:36:107
213969913326,69cyclictest0-21swapper/1523:22:237
21389991330,89cyclictest0-21swapper/1423:27:266
213809913325,68cyclictest0-21swapper/1222:07:174
213809913325,68cyclictest0-21swapper/1222:07:164
213179913332,81cyclictest0-21swapper/122:25:441
213179913332,81cyclictest0-21swapper/122:25:441
213179913330,74cyclictest0-21swapper/121:59:181
213179913330,74cyclictest0-21swapper/121:59:171
213179913330,68cyclictest0-21swapper/123:24:491
213179913330,66cyclictest0-21swapper/100:17:111
213179913329,69cyclictest0-21swapper/123:59:331
213179913328,68cyclictest0-21swapper/122:19:371
213179913328,68cyclictest0-21swapper/122:19:361
213179913327,75cyclictest0-21swapper/122:53:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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