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2025-09-18 - 12:43
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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 Thu Sep 18, 2025 00:49:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2482913180,309ptp4l0-21swapper/119:06:591
35229915138,112cyclictest0-21swapper/1623:25:158
35229915138,111cyclictest0-21swapper/1622:51:158
36049915026,123cyclictest0-21swapper/2623:19:4119
36049915026,122cyclictest0-21swapper/2622:18:4519
36049915026,122cyclictest0-21swapper/2622:18:4519
35229915038,90cyclictest0-21swapper/1620:55:018
36049914926,78cyclictest0-21swapper/2622:54:0219
36049914726,75cyclictest0-21swapper/2623:38:5519
36049914625,81cyclictest0-21swapper/2600:29:0919
36049914325,74cyclictest0-21swapper/2623:58:1019
35079914115,100cyclictest0-21swapper/1421:28:196
35079914115,100cyclictest0-21swapper/1421:28:196
35229914025,90cyclictest0-21swapper/1620:35:278
35079914015,117cyclictest0-21swapper/1423:14:586
18932140133,6sleep30-21swapper/319:05:4623
36049913926,70cyclictest0-21swapper/2623:22:2119
35799913926,87cyclictest0-21swapper/2300:20:1816
35079913915,92cyclictest0-21swapper/1423:33:226
35079913915,123cyclictest0-21swapper/1420:25:166
35079913915,123cyclictest0-21swapper/1400:30:006
35079913915,120cyclictest0-21swapper/1422:21:466
35079913816,102cyclictest0-21swapper/1422:47:256
35079913815,92cyclictest0-21swapper/1423:42:466
35079913815,122cyclictest0-21swapper/1422:54:226
35079913815,103cyclictest0-21swapper/1421:36:526
35079913815,103cyclictest0-21swapper/1421:36:516
34919913811,84cyclictest0-21swapper/1220:23:424
3557991370,81cyclictest0-21swapper/2020:07:4013
3491991374,83cyclictest871rcuc/1219:17:404
34919913718,75cyclictest0-21swapper/1223:30:114
35799913626,71cyclictest0-21swapper/2323:44:1316
35799913625,90cyclictest0-21swapper/2300:13:2916
35799913625,77cyclictest0-21swapper/2300:25:2216
35229913624,73cyclictest0-21swapper/1623:48:548
35079913615,83cyclictest0-21swapper/1400:31:066
35799913526,60cyclictest0-21swapper/2323:57:0216
35639913554,46cyclictest0-21swapper/2121:35:1814
35639913554,46cyclictest0-21swapper/2121:35:1714
3532991350,80cyclictest0-21swapper/1721:44:409
3532991350,80cyclictest0-21swapper/1721:44:409
34919913519,71cyclictest0-21swapper/1220:05:154
3557991340,79cyclictest0-21swapper/2021:30:1913
3557991340,79cyclictest0-21swapper/2021:30:1913
11342134126,6sleep130-21swapper/1319:05:245
35799913323,70cyclictest0-21swapper/2321:46:3316
35229913335,66cyclictest0-21swapper/1623:16:058
35079913315,83cyclictest0-21swapper/1400:05:246
3563991320,83cyclictest0-21swapper/2100:15:4314
35079913215,78cyclictest0-21swapper/1423:59:346
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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