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2026-03-31 - 20:15
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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 Tue Mar 31, 2026 12:49:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913150,307ptp4l0-21swapper/107:09:361
2226899304107,2cyclictest151rcu_preempt09:34:380
223589929598,3cyclictest151rcu_preempt11:55:178
22423991780,138cyclictest0-21swapper/2910:48:4922
22423991780,138cyclictest0-21swapper/2910:48:4922
22423991780,134cyclictest0-21swapper/2910:53:0622
22423991780,134cyclictest0-21swapper/2910:53:0622
224239916635,79cyclictest0-21swapper/2909:40:2422
330891149141,6phc2sys0-21swapper/207:05:1512
224239914918,83cyclictest0-21swapper/2911:10:1222
222929914819,114cyclictest0-21swapper/409:47:5326
222929914719,98cyclictest0-21swapper/409:15:3626
222929914419,124cyclictest0-21swapper/410:10:1026
222929914419,124cyclictest0-21swapper/410:10:1026
222929914415,107cyclictest0-21swapper/410:35:2226
222929914415,107cyclictest0-21swapper/410:35:2226
224239914326,73cyclictest0-21swapper/2910:22:0622
224239914326,73cyclictest0-21swapper/2910:22:0622
22423991420,103cyclictest0-21swapper/2909:27:2322
222929914219,91cyclictest0-21swapper/412:07:5026
222849914220,46cyclictest0-21swapper/309:39:2623
222849914220,46cyclictest0-21swapper/309:39:2623
22278991422,136cyclictest0-21swapper/210:40:2112
22278991422,136cyclictest0-21swapper/210:40:2112
22278991422,124cyclictest0-21swapper/210:53:4312
22278991422,124cyclictest0-21swapper/210:53:4312
222929914119,70cyclictest0-21swapper/409:28:1526
22278991412,90cyclictest0-21swapper/211:21:4412
22278991412,118cyclictest0-21swapper/212:23:3012
22278991412,105cyclictest0-21swapper/208:05:2112
22278991412,104cyclictest0-21swapper/209:24:4112
224239914028,65cyclictest0-21swapper/2907:35:2222
223949914029,80cyclictest0-21swapper/2511:15:2518
22278991402,99cyclictest0-21swapper/209:46:5212
22278991402,130cyclictest0-21swapper/212:05:2012
22278991402,120cyclictest0-21swapper/207:55:1312
224239913945,62cyclictest0-21swapper/2910:42:5622
224239913945,62cyclictest0-21swapper/2910:42:5622
224239913942,61cyclictest0-21swapper/2907:23:2322
22423991390,87cyclictest0-21swapper/2911:43:5222
22423991390,108cyclictest0-21swapper/2909:32:2322
223949913929,78cyclictest0-21swapper/2511:05:1918
223949913929,78cyclictest0-21swapper/2511:05:1918
223949913926,112cyclictest0-21swapper/2512:05:0018
222849913919,93cyclictest0-21swapper/311:42:5423
22278991392,101cyclictest0-21swapper/211:16:4212
224239913846,58cyclictest0-21swapper/2911:55:0622
224239913827,65cyclictest0-21swapper/2912:31:1322
224239913826,65cyclictest0-21swapper/2908:10:0622
224239913753,56cyclictest0-21swapper/2909:04:0422
224239913730,63cyclictest0-21swapper/2912:05:1522
22278991372,102cyclictest0-21swapper/209:13:2812
22278991372,102cyclictest0-21swapper/209:13:2812
224239913653,62cyclictest0-21swapper/2909:12:0522
224239913653,62cyclictest0-21swapper/2909:12:0522
224239913644,70cyclictest0-21swapper/2910:06:0422
224239913644,70cyclictest0-21swapper/2910:06:0322
224239913638,63cyclictest0-21swapper/2910:36:3222
224239913638,63cyclictest0-21swapper/2910:36:3222
222849913649,52cyclictest0-21swapper/310:42:4523
222849913649,52cyclictest0-21swapper/310:42:4523
224239913552,57cyclictest0-21swapper/2911:00:3522
224239913552,57cyclictest0-21swapper/2911:00:3522
224239913535,69cyclictest0-21swapper/2911:38:4922
224239913529,73cyclictest0-21swapper/2912:39:4722
224239913528,70cyclictest0-21swapper/2912:11:4022
223949913526,61cyclictest0-21swapper/2512:05:1418
224239913447,57cyclictest0-21swapper/2911:51:5322
224239913430,71cyclictest0-21swapper/2912:19:0922
224239913429,68cyclictest0-21swapper/2907:10:1522
224239913427,66cyclictest0-21swapper/2909:24:5422
224239913426,67cyclictest0-21swapper/2908:02:0522
224239913424,66cyclictest0-21swapper/2908:25:0322
222849913445,60cyclictest0-21swapper/310:23:1623
222849913445,60cyclictest0-21swapper/310:23:1623
22278991342,106cyclictest0-21swapper/210:30:1212
22278991342,106cyclictest0-21swapper/210:30:1212
224239913345,69cyclictest0-21swapper/2911:19:4922
224239913340,62cyclictest0-21swapper/2908:59:1522
224239913339,63cyclictest0-21swapper/2907:59:2422
224239913332,73cyclictest0-21swapper/2909:50:3422
224239913331,70cyclictest0-21swapper/2911:45:2922
224239913330,75cyclictest0-21swapper/2908:33:3522
224239913330,71cyclictest0-21swapper/2912:20:1322
224239913329,70cyclictest0-21swapper/2910:34:5522
224239913329,70cyclictest0-21swapper/2910:34:5522
224239913329,67cyclictest0-21swapper/2907:54:0422
224239913329,61cyclictest0-21swapper/2912:00:5922
224239913328,74cyclictest0-21swapper/2911:31:3522
224239913328,67cyclictest0-21swapper/2908:36:0422
224239913327,70cyclictest0-21swapper/2911:08:0422
224239913327,70cyclictest0-21swapper/2911:08:0322
223949913324,59cyclictest0-21swapper/2509:52:0618
223949913323,67cyclictest0-21swapper/2511:31:3118
222849913347,60cyclictest0-21swapper/309:29:4923
224239913242,59cyclictest0-21swapper/2911:26:4622
224239913229,70cyclictest0-21swapper/2909:37:4422
224239913229,70cyclictest0-21swapper/2909:37:4422
224239913229,69cyclictest0-21swapper/2910:03:2322
224239913229,69cyclictest0-21swapper/2910:03:2322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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