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2026-06-21 - 19:57
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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 Sun Jun 21, 2026 12:49:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912810,273ptp4l0-21swapper/107:07:051
190669922325,1cyclictest151rcu_preempt09:51:4927
190669922325,1cyclictest151rcu_preempt09:51:4927
177562168160,6sleep310-21swapper/3107:08:0125
191479915621,108cyclictest0-21swapper/2312:07:2316
19100991534,149cyclictest0-21swapper/1412:16:556
19100991524,102cyclictest0-21swapper/1410:30:156
19100991524,102cyclictest0-21swapper/1410:30:156
191479915121,94cyclictest0-21swapper/2309:13:4216
191479915121,94cyclictest0-21swapper/2309:13:4216
19100991504,107cyclictest0-21swapper/1409:35:026
19100991504,107cyclictest0-21swapper/1409:35:026
19100991504,101cyclictest0-21swapper/1411:13:486
191779914917,83cyclictest185-21ksoftirqd/2809:31:1421
191779914917,83cyclictest185-21ksoftirqd/2809:31:1421
19108991499,36cyclictest0-21swapper/1611:55:228
1904199148141,7cyclictest22-21ksoftirqd/107:47:511
191479914521,70cyclictest0-21swapper/2309:15:1116
191479914521,70cyclictest0-21swapper/2309:15:1116
19133991450,85cyclictest0-21swapper/2110:05:3114
19133991450,85cyclictest0-21swapper/2110:05:3114
19100991454,96cyclictest0-21swapper/1412:09:566
19070991450,85cyclictest0-21swapper/609:55:0728
19070991450,85cyclictest0-21swapper/609:55:0728
191779914328,60cyclictest0-21swapper/2807:45:2521
19157991430,83cyclictest0-21swapper/2510:40:5118
19041991430,86cyclictest0-21swapper/111:02:541
19108991427,124cyclictest151rcu_preempt10:10:358
19108991427,124cyclictest151rcu_preempt10:10:358
191009914213,69cyclictest151rcu_preempt07:58:426
191779914122,116cyclictest151rcu_preempt12:28:0821
191479914121,73cyclictest0-21swapper/2311:28:0516
19100991414,101cyclictest0-21swapper/1410:25:106
191579914012,79cyclictest0-21swapper/2510:49:2418
19108991408,112cyclictest0-21swapper/1610:28:588
191779913918,91cyclictest0-21swapper/2807:20:1921
19108991391,134cyclictest0-21swapper/1611:33:378
191479913818,102cyclictest0-21swapper/2312:04:3716
190709913826,62cyclictest0-21swapper/610:33:0328
190709913826,62cyclictest0-21swapper/610:33:0328
190469913815,65cyclictest0-21swapper/210:43:0912
190709913790,46cyclictest30601-21missed_timers07:15:2028
190709913723,71cyclictest0-21swapper/610:14:2228
190709913723,71cyclictest0-21swapper/610:14:2128
190709913720,72cyclictest0-21swapper/609:17:3028
190709913720,72cyclictest0-21swapper/609:17:3028
190709913641,89cyclictest0-21swapper/612:30:0628
19089991350,88cyclictest0-21swapper/1110:23:043
19089991350,81cyclictest0-21swapper/1109:33:223
19089991350,81cyclictest0-21swapper/1109:33:223
190709913527,67cyclictest0-21swapper/612:23:1028
190419913524,70cyclictest0-21swapper/109:27:011
190419913524,70cyclictest0-21swapper/109:27:011
191479913418,82cyclictest0-21swapper/2311:15:2716
191479913417,84cyclictest0-21swapper/2309:54:5216
191479913417,84cyclictest0-21swapper/2309:54:5216
190709913443,61cyclictest0-21swapper/611:19:0128
190709913427,77cyclictest0-21swapper/612:17:1728
190419913449,57cyclictest0-21swapper/109:49:411
190419913449,57cyclictest0-21swapper/109:49:411
190419913446,59cyclictest0-21swapper/110:03:501
190419913446,59cyclictest0-21swapper/110:03:501
190419913428,64cyclictest0-21swapper/110:56:441
190709913328,63cyclictest0-21swapper/610:15:2528
190709913328,63cyclictest0-21swapper/610:15:2528
190709913325,62cyclictest0-21swapper/609:44:2528
190709913325,62cyclictest0-21swapper/609:44:2528
190419913331,90cyclictest0-21swapper/111:05:101
190419913330,91cyclictest0-21swapper/110:41:321
190419913328,70cyclictest0-21swapper/107:15:001
190419913327,68cyclictest0-21swapper/108:30:351
190419913327,63cyclictest0-21swapper/111:41:231
190709913230,73cyclictest0-21swapper/610:05:4828
190709913230,73cyclictest0-21swapper/610:05:4828
190419913251,62cyclictest0-21swapper/109:57:111
190419913251,62cyclictest0-21swapper/109:57:101
190419913229,63cyclictest0-21swapper/112:07:171
190419913228,61cyclictest0-21swapper/111:21:051
190419913227,68cyclictest0-21swapper/112:21:131
191299913132,61cyclictest0-21swapper/2010:43:5413
19100991310,76cyclictest0-21swapper/1410:42:176
190709913129,65cyclictest0-21swapper/610:20:1428
190709913128,69cyclictest0-21swapper/609:48:4228
190709913128,69cyclictest0-21swapper/609:48:4228
190709913128,64cyclictest0-21swapper/608:45:0628
190419913146,57cyclictest0-21swapper/111:32:501
190419913130,74cyclictest0-21swapper/107:15:151
190419913130,66cyclictest0-21swapper/112:02:291
190419913128,71cyclictest0-21swapper/110:23:531
190419913128,69cyclictest0-21swapper/108:39:571
190419913127,74cyclictest0-21swapper/109:21:211
190419913127,74cyclictest0-21swapper/109:21:211
190419913127,69cyclictest0-21swapper/107:38:461
190419913127,68cyclictest0-21swapper/109:40:201
190419913127,68cyclictest0-21swapper/109:40:201
190419913126,72cyclictest0-21swapper/112:16:301
190419913126,69cyclictest0-21swapper/110:48:571
2250221300,1sleep180-21swapper/1808:50:2310
191299913046,61cyclictest0-21swapper/2010:24:3813
190419913043,57cyclictest0-21swapper/111:26:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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