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2025-07-15 - 04:17
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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 Tue Jul 15, 2025 00:49:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2482912280,220ptp4l0-21swapper/119:09:571
257472201194,6sleep260-21swapper/2619:07:2319
273059915650,101cyclictest0-21swapper/2523:01:0818
272349915630,85cyclictest0-21swapper/1621:11:258
273529915318,102cyclictest0-21swapper/3121:58:0825
27352991460,86cyclictest0-21swapper/3123:55:4525
273059914640,70cyclictest0-21swapper/2522:57:5518
27352991441,86cyclictest0-21swapper/3121:41:3625
27262991410,81cyclictest0-21swapper/2019:10:0213
27262991410,81cyclictest0-21swapper/2019:10:0213
272349914021,102cyclictest0-21swapper/1622:31:258
272349913933,100cyclictest0-21swapper/1623:33:228
27234991390,84cyclictest0-21swapper/1621:20:248
273369913830,64cyclictest0-21swapper/2921:51:4422
273529913756,63cyclictest0-21swapper/3119:50:2925
273529913731,62cyclictest0-21swapper/3123:45:0325
27352991370,82cyclictest0-21swapper/3123:22:3625
273369913742,61cyclictest0-21swapper/2919:21:3522
273369913742,61cyclictest0-21swapper/2919:21:3422
273369913740,62cyclictest0-21swapper/2920:30:3122
273369913722,70cyclictest0-21swapper/2919:27:2822
273369913722,70cyclictest0-21swapper/2919:27:2822
27234991370,81cyclictest0-21swapper/1622:10:428
273529913649,60cyclictest0-21swapper/3123:03:0525
27352991361,80cyclictest0-21swapper/3122:45:1225
27352991360,82cyclictest0-21swapper/3119:20:0125
27352991360,82cyclictest0-21swapper/3119:20:0025
273369913630,62cyclictest0-21swapper/2919:10:2222
273369913630,62cyclictest0-21swapper/2919:10:2222
273529913529,73cyclictest0-21swapper/3122:25:4225
273369913530,63cyclictest0-21swapper/2921:10:0322
273529913458,61cyclictest0-21swapper/3123:40:3025
273529913432,65cyclictest0-21swapper/3100:35:1825
273529913432,65cyclictest0-21swapper/3100:35:1825
27352991341,79cyclictest0-21swapper/3122:01:5625
27352991341,79cyclictest0-21swapper/3119:28:3425
27352991341,79cyclictest0-21swapper/3119:28:3325
273369913444,65cyclictest0-21swapper/2900:15:4922
273369913435,71cyclictest0-21swapper/2921:08:5922
273369913431,62cyclictest0-21swapper/2919:30:0822
273369913431,62cyclictest0-21swapper/2919:30:0822
273369913430,68cyclictest0-21swapper/2920:59:0722
273369913429,63cyclictest0-21swapper/2900:09:3722
273369913429,63cyclictest0-21swapper/2900:09:3622
273369913419,69cyclictest0-21swapper/2900:31:3222
273369913419,69cyclictest0-21swapper/2900:31:3222
272349913418,72cyclictest0-21swapper/1621:29:568
273529913331,67cyclictest0-21swapper/3123:25:1825
273529913329,65cyclictest0-21swapper/3122:22:1325
27352991330,77cyclictest0-21swapper/3120:10:1525
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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