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2026-07-06 - 19:20
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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 Mon Jul 06, 2026 12:50:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913250,317ptp4l0-21swapper/107:06:441
199789919818,121cyclictest26220-21timerandwakeup10:00:2313
199109918044,1cyclictest151rcu_preempt09:58:3126
19944991681,145cyclictest0-21swapper/1210:25:224
19944991681,141cyclictest0-21swapper/1211:26:504
19944991681,141cyclictest0-21swapper/1211:26:494
19944991671,128cyclictest0-21swapper/1212:20:204
19944991671,128cyclictest0-21swapper/1212:20:204
19944991651,114cyclictest0-21swapper/1211:22:004
19944991641,113cyclictest0-21swapper/1212:07:314
19944991641,113cyclictest0-21swapper/1212:07:304
19969991600,158cyclictest125-21ksoftirqd/1810:18:1010
19944991601,114cyclictest0-21swapper/1212:19:144
19944991601,114cyclictest0-21swapper/1212:19:144
19944991591,113cyclictest0-21swapper/1209:49:334
19944991561,114cyclictest0-21swapper/1209:39:544
199789915422,119cyclictest0-21swapper/2009:26:4713
19944991541,112cyclictest0-21swapper/1210:48:524
199789915334,117cyclictest0-21swapper/2011:07:1913
199789915241,10cyclictest0-21swapper/2009:47:4113
20021991510,90cyclictest0-21swapper/3011:35:3624
20021991510,90cyclictest0-21swapper/3011:35:3524
19914991480,86cyclictest0-21swapper/508:45:3027
199789914730,104cyclictest0-21swapper/2011:37:1513
199789914730,104cyclictest0-21swapper/2011:37:1413
199789914729,116cyclictest0-21swapper/2009:56:3713
19966991470,89cyclictest0-21swapper/1708:27:499
199789914636,94cyclictest0-21swapper/2012:32:0013
199789914636,94cyclictest0-21swapper/2012:31:5913
19944991461,105cyclictest0-21swapper/1210:15:124
199789914428,94cyclictest0-21swapper/2010:12:4213
199699914410,72cyclictest0-21swapper/1811:00:2410
199789914328,107cyclictest0-21swapper/2011:40:1913
19944991431,102cyclictest0-21swapper/1212:33:444
19944991431,102cyclictest0-21swapper/1212:33:434
19923991430,85cyclictest0-21swapper/712:15:0329
19923991430,85cyclictest0-21swapper/712:15:0229
199789914235,106cyclictest27109-21cstates08:30:1213
199789914226,111cyclictest0-21swapper/2008:15:2513
199789914221,118cyclictest11023-21timerwakeupswit10:55:2513
19978991420,89cyclictest0-21swapper/2012:39:1413
199789914130,111cyclictest0-21swapper/2012:15:1813
199789914130,111cyclictest0-21swapper/2012:15:1813
199789914125,97cyclictest0-21swapper/2010:15:2013
19944991411,112cyclictest0-21swapper/1210:35:134
19914991410,86cyclictest0-21swapper/511:11:2527
19914991410,86cyclictest0-21swapper/511:11:2427
19944991401,105cyclictest0-21swapper/1209:17:124
19944991401,101cyclictest0-21swapper/1211:03:514
199789913931,75cyclictest0-21swapper/2012:12:4013
199789913931,75cyclictest0-21swapper/2012:12:4013
19966991391,83cyclictest0-21swapper/1711:07:209
199789913823,77cyclictest0-21swapper/2012:27:5113
199789913823,77cyclictest0-21swapper/2012:27:5013
330891137129,6phc2sys0-21swapper/207:05:1812
19914991370,85cyclictest0-21swapper/512:20:0127
19914991370,85cyclictest0-21swapper/512:20:0027
19969991360,85cyclictest0-21swapper/1812:16:1810
19969991360,85cyclictest0-21swapper/1812:16:1710
19944991361,134cyclictest0-21swapper/1211:07:364
199239913645,56cyclictest0-21swapper/709:18:3929
199579913432,94cyclictest0-21swapper/1509:20:257
19914991340,81cyclictest0-21swapper/509:35:5627
1989299134130,0cyclictest13-21ksoftirqd/011:21:140
199789913317,61cyclictest0-21swapper/2009:54:1413
19944991333,108cyclictest0-21swapper/1211:36:264
19944991333,108cyclictest0-21swapper/1211:36:254
19944991331,86cyclictest0-21swapper/1210:40:514
19944991331,126cyclictest0-21swapper/1212:25:384
19944991331,126cyclictest0-21swapper/1212:25:374
199579913231,94cyclictest0-21swapper/1512:11:587
199579913231,94cyclictest0-21swapper/1512:11:587
199379913223,109cyclictest0-21swapper/1009:20:202
199579913129,64cyclictest0-21swapper/1509:40:427
199579913127,69cyclictest151rcu_preempt10:11:277
199449913118,92cyclictest0-21swapper/1211:43:264
199379913149,55cyclictest0-21swapper/1008:04:582
199239913128,66cyclictest0-21swapper/708:10:0229
19905991317,98cyclictest0-21swapper/311:27:5723
19905991317,98cyclictest0-21swapper/311:27:5623
19944991301,96cyclictest0-21swapper/1209:28:454
199239913048,55cyclictest0-21swapper/710:55:3429
199149913052,57cyclictest9330-21taskset12:24:2227
199149913052,57cyclictest9330-21taskset12:24:2127
19905991307,71cyclictest0-21swapper/310:20:0423
199379912926,68cyclictest0-21swapper/1009:52:562
199379912925,62cyclictest0-21swapper/1011:20:032
199239912926,64cyclictest0-21swapper/710:06:4629
199239912926,61cyclictest0-21swapper/711:22:3929
199239912925,65cyclictest0-21swapper/707:15:1329
199239912925,65cyclictest0-21swapper/707:15:1329
19905991298,112cyclictest0-21swapper/311:34:2223
19905991298,112cyclictest0-21swapper/311:34:2123
199699912823,82cyclictest0-21swapper/1810:59:1910
199449912844,57cyclictest0-21swapper/1211:14:384
199449912844,57cyclictest0-21swapper/1211:14:374
199379912842,55cyclictest0-21swapper/1009:15:302
199379912837,59cyclictest0-21swapper/1010:20:172
199669912719,70cyclictest0-21swapper/1710:53:279
199579912724,102cyclictest0-21swapper/1509:16:397
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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