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2026-06-16 - 14:37
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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 Jun 16, 2026 00:49:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913210,312ptp4l0-21swapper/119:07:231
117662224216,6sleep230-21swapper/2319:09:4016
129529921617,3cyclictest151rcu_preempt00:31:350
1300099215163,11cyclictest0-21swapper/1121:05:083
12961991930,187cyclictest0-21swapper/223:16:0912
330891192184,6phc2sys0-21swapper/219:06:5112
12961991820,181cyclictest0-21swapper/220:00:2312
12961991794,174cyclictest0-21swapper/219:49:2012
12961991693,135cyclictest0-21swapper/223:30:2112
130229916732,93cyclictest0-21swapper/1600:19:348
12961991671,131cyclictest0-21swapper/222:39:1612
130669916232,129cyclictest0-21swapper/2421:00:2017
130669916232,129cyclictest0-21swapper/2421:00:2017
130669916232,127cyclictest0-21swapper/2421:05:1417
12961991620,104cyclictest0-21swapper/222:16:1712
130049916129,83cyclictest0-21swapper/1222:06:274
130669916032,107cyclictest0-21swapper/2400:00:2617
130669915831,123cyclictest0-21swapper/2419:55:4417
130729915734,85cyclictest0-21swapper/2521:48:4018
130729915734,85cyclictest0-21swapper/2521:48:4018
12961991570,104cyclictest0-21swapper/221:52:1512
12961991570,104cyclictest0-21swapper/221:52:1412
130729915633,85cyclictest0-21swapper/2500:33:3418
130729915633,82cyclictest0-21swapper/2522:53:1918
130729915631,87cyclictest0-21swapper/2523:31:1718
130729915430,76cyclictest0-21swapper/2523:46:3218
130729915328,124cyclictest0-21swapper/2521:10:1018
130729915328,124cyclictest0-21swapper/2521:10:0918
130729915327,85cyclictest0-21swapper/2500:20:2718
130729915132,66cyclictest0-21swapper/2522:43:2718
130729915128,122cyclictest0-21swapper/2522:50:0018
130669915128,75cyclictest0-21swapper/2400:12:1617
130669915126,75cyclictest0-21swapper/2423:25:1117
130229915125,83cyclictest0-21swapper/1622:05:138
12961991504,139cyclictest0-21swapper/221:34:1112
12961991503,113cyclictest0-21swapper/220:16:3512
12961991493,144cyclictest8258-21/usr/sbin/munin22:40:2612
13022991470,88cyclictest0-21swapper/1623:05:128
130049914733,71cyclictest0-21swapper/1200:07:484
13072991440,86cyclictest0-21swapper/2523:39:4918
130669914425,79cyclictest0-21swapper/2423:10:2817
130519914429,62cyclictest0-21swapper/2219:50:1515
12981991430,106cyclictest0-21swapper/722:18:1729
130729914224,72cyclictest0-21swapper/2521:20:2018
130729914224,72cyclictest0-21swapper/2521:20:2018
129819914252,58cyclictest0-21swapper/720:13:2729
12981991420,87cyclictest0-21swapper/720:57:0329
12981991420,87cyclictest0-21swapper/720:57:0329
130729914121,86cyclictest0-21swapper/2522:04:2518
130229914120,120cyclictest0-21swapper/1621:39:238
130229914120,120cyclictest0-21swapper/1621:39:228
129619914142,59cyclictest0-21swapper/222:46:1312
12961991413,109cyclictest0-21swapper/220:55:0412
12961991413,109cyclictest0-21swapper/220:55:0312
130049914025,75cyclictest0-21swapper/1222:52:284
129819913953,62cyclictest0-21swapper/722:35:2429
12964991390,82cyclictest0-21swapper/300:06:1123
129819913851,25cyclictest0-21swapper/721:20:1229
129819913851,25cyclictest0-21swapper/721:20:1229
129819913848,61cyclictest0-21swapper/721:27:3029
12981991380,82cyclictest0-21swapper/700:18:0129
129619913833,67cyclictest0-21swapper/223:04:0912
129619913832,65cyclictest0-21swapper/221:40:1512
129619913832,65cyclictest0-21swapper/221:40:1412
130049913728,62cyclictest0-21swapper/1220:03:304
13004991370,84cyclictest0-21swapper/1221:26:184
13004991370,79cyclictest0-21swapper/1223:05:264
129819913755,66cyclictest0-21swapper/721:19:1229
129819913755,66cyclictest0-21swapper/721:19:1129
129819913730,63cyclictest0-21swapper/721:40:2029
129819913730,63cyclictest0-21swapper/721:40:1929
129649913728,68cyclictest0-21swapper/321:18:5423
129649913728,68cyclictest0-21swapper/321:18:5323
12961991374,83cyclictest0-21swapper/221:22:5012
12961991374,83cyclictest0-21swapper/221:22:5012
12961991374,102cyclictest0-21swapper/222:56:2412
129619913733,64cyclictest0-21swapper/221:35:2712
129619913733,64cyclictest0-21swapper/221:35:2612
130229913616,90cyclictest31319-21latency_hist21:50:018
130229913616,90cyclictest31319-21latency_hist21:50:018
130049913630,72cyclictest0-21swapper/1222:26:434
129819913645,61cyclictest0-21swapper/722:46:4629
129819913635,63cyclictest0-21swapper/720:10:0229
129819913633,66cyclictest0-21swapper/722:32:4029
129819913629,64cyclictest0-21swapper/722:55:1029
129819913628,62cyclictest0-21swapper/722:20:2629
129619913656,62cyclictest0-21swapper/200:28:5112
129619913632,63cyclictest0-21swapper/200:22:1212
130049913538,66cyclictest0-21swapper/1222:10:214
130049913530,78cyclictest0-21swapper/1219:30:224
130049913527,67cyclictest0-21swapper/1219:41:054
130049913526,67cyclictest0-21swapper/1220:06:394
129819913551,61cyclictest0-21swapper/723:25:3829
129819913549,53cyclictest0-21swapper/723:55:0129
129819913529,63cyclictest0-21swapper/722:50:5329
129619913530,65cyclictest0-21swapper/223:35:4112
130049913441,57cyclictest0-21swapper/1222:46:374
130049913440,74cyclictest0-21swapper/1223:22:164
130049913432,69cyclictest0-21swapper/1223:25:334
130049913430,74cyclictest0-21swapper/1219:19:414
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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