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2025-11-19 - 09:48
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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 Wed Nov 19, 2025 00:48:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1434899349151,2cyclictest151rcu_preempt23:40:0012
1434899349151,2cyclictest151rcu_preempt23:40:0012
2482913080,300ptp4l0-21swapper/119:06:251
2482913080,300ptp4l0-21swapper/119:06:251
143489920256,93cyclictest0-21swapper/221:10:2112
14382991881,135cyclictest0-21swapper/723:03:1229
143379917117,153cyclictest13-21ksoftirqd/023:34:290
143379917117,153cyclictest13-21ksoftirqd/023:34:290
144629917098,71cyclictest137-21ksoftirqd/2023:00:0113
143379916510,116cyclictest0-21swapper/022:50:040
144629915925,72cyclictest0-21swapper/2000:22:3313
14397991490,90cyclictest0-21swapper/900:06:5031
14397991470,87cyclictest0-21swapper/922:42:5631
14397991460,85cyclictest0-21swapper/923:21:2531
14397991460,85cyclictest0-21swapper/923:21:2431
14348991460,89cyclictest0-21swapper/222:00:2112
14397991450,57cyclictest0-21swapper/921:11:1731
143379914448,69cyclictest0-21swapper/021:08:590
14514991430,84cyclictest0-21swapper/2919:40:1822
14514991420,99cyclictest0-21swapper/2900:32:1622
14514991420,124cyclictest0-21swapper/2922:02:0722
14397991420,85cyclictest0-21swapper/921:50:3331
14397991420,84cyclictest0-21swapper/923:06:5931
1446299141139,1cyclictest151rcu_preempt23:53:0813
14397991410,88cyclictest0-21swapper/923:17:4031
14397991410,88cyclictest0-21swapper/923:17:4031
14397991410,88cyclictest0-21swapper/919:50:1931
14397991410,83cyclictest0-21swapper/922:50:2531
14397991410,82cyclictest0-21swapper/922:12:1231
143979913947,64cyclictest0-21swapper/922:48:2331
14397991390,87cyclictest0-21swapper/922:23:4131
143379913941,58cyclictest0-21swapper/021:34:420
14341991380,86cyclictest0-21swapper/100:15:471
143379913829,61cyclictest0-21swapper/022:30:180
143379913730,67cyclictest0-21swapper/021:20:310
14397991360,86cyclictest0-21swapper/922:06:3531
14397991360,84cyclictest0-21swapper/922:57:2231
14397991360,82cyclictest0-21swapper/922:19:2531
14353991360,84cyclictest0-21swapper/300:23:1823
14337991362,98cyclictest1174-21latency_hist19:50:010
143979913530,67cyclictest0-21swapper/923:58:3331
143979913528,65cyclictest0-21swapper/922:29:0231
14397991351,81cyclictest0-21swapper/921:21:5831
14397991350,79cyclictest0-21swapper/900:10:1031
14514991340,84cyclictest0-21swapper/2921:50:0822
143979913430,68cyclictest0-21swapper/900:01:2931
14397991340,79cyclictest0-21swapper/920:50:0031
144129913338,38cyclictest0-21swapper/1122:17:513
14397991330,80cyclictest0-21swapper/921:30:3131
143379913328,63cyclictest0-21swapper/020:57:340
143379913328,62cyclictest0-21swapper/019:40:050
14514991320,131cyclictest0-21swapper/2922:29:5322
143979913245,52cyclictest0-21swapper/922:32:3131
143979913231,66cyclictest0-21swapper/900:21:4831
143979913226,76cyclictest0-21swapper/921:25:2631
143979913226,64cyclictest0-21swapper/923:10:1131
143979913226,64cyclictest0-21swapper/923:10:1031
14397991320,83cyclictest0-21swapper/923:03:1431
14397991320,76cyclictest0-21swapper/923:25:5731
143539913220,106cyclictest0-21swapper/321:40:5023
14341991320,79cyclictest0-21swapper/121:50:571
143979913162,62cyclictest0-21swapper/921:59:0631
143979913148,55cyclictest0-21swapper/922:38:0731
143979913127,60cyclictest0-21swapper/919:55:0831
14397991310,82cyclictest0-21swapper/923:53:2831
14382991310,86cyclictest0-21swapper/723:56:1629
143979913031,66cyclictest0-21swapper/920:40:0131
143979913030,68cyclictest0-21swapper/921:47:0631
143979913027,69cyclictest0-21swapper/900:26:0331
143979913023,73cyclictest0-21swapper/921:19:3431
14397991300,81cyclictest0-21swapper/921:37:4431
14397991300,77cyclictest0-21swapper/920:05:1731
14397991300,77cyclictest0-21swapper/919:10:1531
14353991300,87cyclictest0-21swapper/322:15:2023
14341991300,69cyclictest0-21swapper/121:15:091
14337991304,79cyclictest0-21swapper/023:25:350
14514991293,93cyclictest0-21swapper/2923:56:2922
144129912925,59cyclictest0-21swapper/1120:37:083
14397991294,74cyclictest0-21swapper/920:00:2831
143979912921,66cyclictest0-21swapper/923:46:0031
143539912921,89cyclictest0-21swapper/322:23:3523
143489912939,89cyclictest0-21swapper/200:01:2212
14341991290,82cyclictest0-21swapper/121:46:251
143379912929,59cyclictest0-21swapper/022:06:280
144129912845,52cyclictest0-21swapper/1122:05:013
144129912830,69cyclictest0-21swapper/1121:22:213
144129912829,65cyclictest0-21swapper/1123:08:043
143979912830,67cyclictest0-21swapper/900:37:1831
14397991280,74cyclictest0-21swapper/923:31:0231
14397991280,74cyclictest0-21swapper/923:31:0131
143539912846,81cyclictest0-21swapper/323:54:5823
143379912827,60cyclictest0-21swapper/000:29:110
144829912716,63cyclictest0-21swapper/2420:35:1617
144129912748,58cyclictest0-21swapper/1120:20:173
144129912735,59cyclictest0-21swapper/1122:21:033
144129912727,64cyclictest0-21swapper/1123:16:383
144129912727,64cyclictest0-21swapper/1123:16:383
143979912732,65cyclictest0-21swapper/900:19:0831
143979912724,60cyclictest0-21swapper/919:15:5231
143979912716,81cyclictest0-21swapper/900:31:4131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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