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2025-04-02 - 08:08
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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 50 highest latencies:
System rackcslot8.osadl.org (updated Wed Apr 02, 2025 00:50:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63869923537,1cyclictest151rcu_preempt21:57:4028
63869923537,1cyclictest151rcu_preempt21:57:4028
2482912320,224ptp4l0-21swapper/119:07:271
63519922827,198cyclictest151rcu_preempt23:14:001
329891228220,6phc2sys0-21swapper/219:05:1612
64799918514,169cyclictest0-21swapper/2521:50:1818
64799918514,169cyclictest0-21swapper/2521:50:1818
64799918116,113cyclictest0-21swapper/2523:55:2818
64559917433,94cyclictest0-21swapper/2021:05:2013
64559917433,94cyclictest0-21swapper/2021:05:1913
64559917333,139cyclictest0-21swapper/2021:25:0313
64559917333,139cyclictest0-21swapper/2021:25:0213
64559917332,139cyclictest0-21swapper/2000:14:2713
64559917331,31cyclictest0-21swapper/2022:42:0413
64559917331,31cyclictest0-21swapper/2022:42:0413
64559916926,125cyclictest137-21ksoftirqd/2021:58:1913
64559916926,125cyclictest137-21ksoftirqd/2021:58:1913
64559916924,72cyclictest137-21ksoftirqd/2022:50:1913
64559916924,72cyclictest137-21ksoftirqd/2022:50:1913
64799916716,97cyclictest0-21swapper/2523:34:5918
6412991610,124cyclictest0-21swapper/1000:10:492
64649915834,37cyclictest0-21swapper/2222:47:3815
644299158156,1cyclictest118-21ksoftirqd/1723:26:549
64129915223,107cyclictest0-21swapper/1023:36:522
6346991520,130cyclictest0-21swapper/020:04:070
64799915116,98cyclictest0-21swapper/2500:05:4518
64559915130,80cyclictest0-21swapper/2023:40:1913
64129914929,79cyclictest0-21swapper/1022:36:122
64799914516,76cyclictest0-21swapper/2500:26:0218
6464991450,84cyclictest0-21swapper/2200:09:2315
6412991451,87cyclictest0-21swapper/1019:40:242
64799914416,80cyclictest0-21swapper/2522:32:4418
64689914417,125cyclictest151rcu_preempt00:14:1316
64129914423,79cyclictest0-21swapper/1019:50:012
6496991430,85cyclictest0-21swapper/2800:26:2421
64799914216,80cyclictest0-21swapper/2522:00:4018
64799914216,80cyclictest0-21swapper/2522:00:3918
6366991420,85cyclictest0-21swapper/320:50:0123
64559914132,91cyclictest0-21swapper/2022:24:2513
64559914132,91cyclictest0-21swapper/2022:24:2513
64129914129,66cyclictest0-21swapper/1021:59:202
64129914129,66cyclictest0-21swapper/1021:59:202
6366991410,84cyclictest0-21swapper/320:01:2023
6366991410,82cyclictest0-21swapper/322:46:1423
64129914013,88cyclictest0-21swapper/1021:40:232
63669914031,64cyclictest0-21swapper/323:07:3723
6468991390,84cyclictest0-21swapper/2319:21:2416
63669913949,58cyclictest0-21swapper/322:13:0723
63669913949,58cyclictest0-21swapper/322:13:0623
6366991390,82cyclictest0-21swapper/321:05:1523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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