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2026-08-24 - 18:25
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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 Aug 24, 2026 12:49:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
127679934253,197cyclictest151rcu_preempt12:35:3613
126449927880,1cyclictest151rcu_preempt11:34:051
3273912520,244ptp4l0-21swapper/107:06:211
330891222213,6phc2sys0-21swapper/207:05:1812
127279919732,87cyclictest0-21swapper/1308:20:195
127279919732,87cyclictest0-21swapper/1308:20:185
126929918034,104cyclictest0-21swapper/811:55:0630
126929917632,92cyclictest0-21swapper/811:50:1630
126929917632,104cyclictest0-21swapper/812:06:2130
126929917631,98cyclictest0-21swapper/809:19:2930
126929916730,85cyclictest0-21swapper/812:20:1330
12785991584,119cyclictest0-21swapper/2311:01:2716
12654991580,80cyclictest0-21swapper/309:18:3523
126929915328,85cyclictest0-21swapper/812:28:4630
12785991494,105cyclictest0-21swapper/2309:58:5516
12649991480,91cyclictest0-21swapper/207:43:4212
12649991480,91cyclictest0-21swapper/207:43:4212
12785991464,85cyclictest0-21swapper/2312:22:1616
126619914530,87cyclictest151rcu_preempt10:40:5026
126549914526,118cyclictest0-21swapper/308:08:4923
126549914526,118cyclictest0-21swapper/308:08:4823
12785991424,102cyclictest0-21swapper/2307:13:1516
12649991420,88cyclictest0-21swapper/207:40:0012
12649991420,88cyclictest0-21swapper/207:40:0012
127279914158,81cyclictest0-21swapper/1310:14:545
126929914022,79cyclictest0-21swapper/808:45:2430
126929914022,79cyclictest0-21swapper/808:45:2330
127859913916,122cyclictest155-21ksoftirqd/2310:35:5416
12654991394,81cyclictest0-21swapper/311:40:1423
12785991384,133cyclictest0-21swapper/2308:20:3516
12785991384,133cyclictest0-21swapper/2308:20:3416
12654991380,86cyclictest0-21swapper/312:24:0423
126499913733,99cyclictest151rcu_preempt10:06:4212
12785991364,101cyclictest0-21swapper/2309:24:4216
127499913647,59cyclictest0-21swapper/1607:55:178
127499913647,59cyclictest0-21swapper/1607:55:178
127499913626,109cyclictest0-21swapper/1609:15:248
126999913522,33cyclictest0-21swapper/910:17:4731
126999913521,113cyclictest0-21swapper/907:50:3131
126999913521,113cyclictest0-21swapper/907:50:3131
12699991350,83cyclictest0-21swapper/909:49:4231
127499913443,60cyclictest0-21swapper/1610:45:268
127499913441,61cyclictest0-21swapper/1608:50:508
126929913445,57cyclictest0-21swapper/810:32:0230
126929913429,65cyclictest0-21swapper/808:42:3730
126929913429,65cyclictest0-21swapper/808:42:3730
12785991334,119cyclictest0-21swapper/2311:37:3816
127499913326,63cyclictest0-21swapper/1611:32:148
126929913348,58cyclictest0-21swapper/809:05:2230
126929913344,57cyclictest0-21swapper/810:18:3430
126929913343,67cyclictest0-21swapper/808:21:5130
126929913343,67cyclictest0-21swapper/808:21:5030
126929913329,72cyclictest0-21swapper/808:05:1830
126929913329,72cyclictest0-21swapper/808:05:1730
12676991330,81cyclictest0-21swapper/611:10:3828
128019913250,51cyclictest0-21swapper/2612:35:2719
128019913223,72cyclictest0-21swapper/2612:19:3819
127499913223,69cyclictest0-21swapper/1612:12:208
126929913249,57cyclictest0-21swapper/809:29:1130
126929913238,66cyclictest0-21swapper/809:14:1230
126929913233,68cyclictest0-21swapper/807:10:1430
126929913228,69cyclictest0-21swapper/809:22:4230
126929913227,69cyclictest0-21swapper/810:52:3330
128019913138,64cyclictest0-21swapper/2611:55:5119
127499913153,57cyclictest0-21swapper/1609:05:168
127499913134,68cyclictest0-21swapper/1612:24:178
12727991310,60cyclictest0-21swapper/1309:47:375
12692991318,78cyclictest0-21swapper/812:01:4430
126929913126,66cyclictest0-21swapper/810:09:4730
12785991304,83cyclictest0-21swapper/2309:13:3516
127499913047,58cyclictest0-21swapper/1608:16:068
127499913047,58cyclictest0-21swapper/1608:16:068
127499913031,65cyclictest0-21swapper/1612:08:028
127499913029,67cyclictest0-21swapper/1611:52:338
127499913023,65cyclictest0-21swapper/1609:25:348
126929913027,69cyclictest0-21swapper/807:50:1930
126929913027,69cyclictest0-21swapper/807:50:1930
126929913027,69cyclictest0-21swapper/807:21:1030
126929913027,67cyclictest0-21swapper/811:10:0930
126929913026,69cyclictest0-21swapper/807:47:2630
126929913026,69cyclictest0-21swapper/807:47:2630
126769913041,59cyclictest0-21swapper/607:20:3428
126549913077,52cyclictest0-21swapper/308:35:0123
126549913077,52cyclictest0-21swapper/308:35:0123
12649991306,72cyclictest0-21swapper/210:57:2812
127499912947,62cyclictest0-21swapper/1611:03:538
127499912926,66cyclictest0-21swapper/1612:34:148
127499912925,61cyclictest0-21swapper/1609:55:138
127499912924,65cyclictest0-21swapper/1612:00:028
126999912933,63cyclictest0-21swapper/911:58:4231
126929912942,66cyclictest0-21swapper/807:17:1630
126929912931,69cyclictest0-21swapper/807:40:1030
126929912931,69cyclictest0-21swapper/807:40:1030
126929912930,71cyclictest0-21swapper/808:28:1530
126929912930,71cyclictest0-21swapper/808:28:1430
126929912930,70cyclictest0-21swapper/811:17:3730
126929912930,67cyclictest0-21swapper/811:40:3930
126929912928,67cyclictest0-21swapper/807:35:2230
126929912928,67cyclictest0-21swapper/807:35:2230
126549912935,81cyclictest0-21swapper/311:22:3523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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