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2026-04-11 - 22:13
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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 Sat Apr 11, 2026 12:49:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
169169926871,1cyclictest151rcu_preempt10:32:4913
3273912350,227ptp4l0-21swapper/107:10:001
16888991799,148cyclictest0-21swapper/1610:38:538
16888991799,148cyclictest0-21swapper/1610:38:538
16888991789,153cyclictest0-21swapper/1609:30:188
16888991789,153cyclictest0-21swapper/1609:30:188
16888991789,131cyclictest0-21swapper/1610:43:088
169529917732,144cyclictest0-21swapper/2511:54:2418
16888991779,130cyclictest0-21swapper/1608:05:228
16888991779,126cyclictest0-21swapper/1610:53:228
16888991769,140cyclictest0-21swapper/1612:32:308
169529917330,103cyclictest0-21swapper/2510:37:5818
169529917330,103cyclictest0-21swapper/2510:37:5818
169529917129,92cyclictest0-21swapper/2511:33:3318
169529916926,143cyclictest0-21swapper/2508:15:1718
169529916827,93cyclictest0-21swapper/2509:24:1318
169529916338,74cyclictest0-21swapper/2512:06:0918
16888991619,80cyclictest0-21swapper/1610:55:168
330891157148,6phc2sys0-21swapper/207:05:1512
169299915717,97cyclictest0-21swapper/2209:49:4915
169299915717,97cyclictest0-21swapper/2209:49:4915
135942153145,6sleep80-21swapper/807:05:1730
16888991519,84cyclictest0-21swapper/1610:17:188
16888991519,84cyclictest0-21swapper/1610:17:188
16888991509,92cyclictest0-21swapper/1607:51:378
16899991430,85cyclictest0-21swapper/1809:16:3510
16888991439,88cyclictest0-21swapper/1612:00:348
169529914217,103cyclictest0-21swapper/2511:55:2818
169529913932,63cyclictest0-21swapper/2511:05:1418
169529913830,107cyclictest0-21swapper/2508:00:1918
16888991389,95cyclictest0-21swapper/1611:15:178
168889913819,47cyclictest0-21swapper/1609:29:168
169249913747,60cyclictest0-21swapper/2111:57:3214
16908991370,81cyclictest0-21swapper/1907:29:4311
169529913623,73cyclictest0-21swapper/2509:35:4318
169529913623,73cyclictest0-21swapper/2509:35:4318
169249913643,59cyclictest0-21swapper/2110:07:5814
169249913643,59cyclictest0-21swapper/2110:07:5814
168889913622,111cyclictest0-21swapper/1611:28:368
16908991351,84cyclictest0-21swapper/1909:05:5311
169529913452,59cyclictest0-21swapper/2512:26:2818
169249913360,50cyclictest143-21ksoftirqd/2110:25:2514
169249913328,62cyclictest0-21swapper/2107:15:2214
168889913341,61cyclictest0-21swapper/1611:13:388
167969913369,4cyclictest151rcu_preempt10:36:4526
167969913369,4cyclictest151rcu_preempt10:36:4526
169529913252,57cyclictest0-21swapper/2509:56:1718
169529913252,57cyclictest0-21swapper/2509:56:1718
169529913246,59cyclictest0-21swapper/2510:12:5118
169529913246,59cyclictest0-21swapper/2510:12:5118
169249913245,55cyclictest0-21swapper/2109:48:1214
169249913245,55cyclictest0-21swapper/2109:48:1214
169249913230,72cyclictest0-21swapper/2109:04:2214
16888991329,71cyclictest0-21swapper/1608:00:018
168889913249,57cyclictest0-21swapper/1611:47:488
169529913153,59cyclictest0-21swapper/2511:27:0818
169529913140,64cyclictest0-21swapper/2509:32:1418
169529913140,64cyclictest0-21swapper/2509:32:1418
169529913126,62cyclictest0-21swapper/2507:41:0518
169249913153,61cyclictest0-21swapper/2109:15:3614
169249913130,68cyclictest0-21swapper/2111:19:0314
169249913128,70cyclictest0-21swapper/2107:34:3614
169249913128,68cyclictest0-21swapper/2112:28:3214
169249913128,67cyclictest0-21swapper/2111:39:2214
169529913049,52cyclictest0-21swapper/2507:45:2118
169529913048,54cyclictest0-21swapper/2508:25:1818
169529913047,60cyclictest0-21swapper/2511:20:1118
169529913042,59cyclictest0-21swapper/2509:00:4218
169529913034,65cyclictest0-21swapper/2510:03:1418
169529913034,65cyclictest0-21swapper/2510:03:1418
169249913030,76cyclictest0-21swapper/2109:36:1014
169249913030,76cyclictest0-21swapper/2109:36:1014
169249913028,67cyclictest0-21swapper/2112:09:5014
169249913028,67cyclictest0-21swapper/2108:15:1314
169249913027,67cyclictest0-21swapper/2112:32:4914
169249913027,67cyclictest0-21swapper/2110:40:3414
168889913025,65cyclictest0-21swapper/1611:30:368
168559913028,101cyclictest0-21swapper/1210:35:244
168559913028,101cyclictest0-21swapper/1210:35:244
168419913031,72cyclictest0-21swapper/1009:11:412
169529912935,66cyclictest0-21swapper/2510:16:3518
169529912935,66cyclictest0-21swapper/2510:16:3518
169529912930,69cyclictest0-21swapper/2510:52:5618
169529912929,67cyclictest0-21swapper/2511:49:3518
169529912928,68cyclictest0-21swapper/2510:44:2318
169529912927,70cyclictest0-21swapper/2511:37:5018
169529912927,69cyclictest0-21swapper/2508:20:2418
169249912944,55cyclictest0-21swapper/2109:28:2514
169249912939,61cyclictest0-21swapper/2111:50:3514
169249912939,61cyclictest0-21swapper/2108:40:1914
169249912930,75cyclictest0-21swapper/2112:38:4214
169249912929,72cyclictest0-21swapper/2109:22:0014
169249912929,69cyclictest0-21swapper/2109:11:5114
169249912929,63cyclictest0-21swapper/2107:46:5314
169249912928,66cyclictest0-21swapper/2110:50:4414
169249912928,65cyclictest0-21swapper/2111:46:5114
169249912928,65cyclictest0-21swapper/2110:35:4614
169249912928,65cyclictest0-21swapper/2110:35:4614
169249912928,64cyclictest0-21swapper/2107:52:1414
169249912926,64cyclictest0-21swapper/2107:55:2614
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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