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2026-04-06 - 15:08
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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 Apr 06, 2026 12:49:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912730,258ptp4l0-21swapper/107:05:151
125239922120,156cyclictest0-21swapper/1008:50:222
125239922120,156cyclictest0-21swapper/1008:50:212
125939917613,162cyclictest0-21swapper/2311:12:0516
125239916320,102cyclictest0-21swapper/1012:23:062
125939916213,123cyclictest0-21swapper/2311:03:3216
125239915820,106cyclictest0-21swapper/1009:05:192
125989915718,87cyclictest0-21swapper/2412:35:2417
124939915424,93cyclictest0-21swapper/311:24:2423
126139915141,109cyclictest0-21swapper/2807:45:1521
126139915141,109cyclictest0-21swapper/2807:45:1521
12600991490,88cyclictest0-21swapper/2512:26:0018
12600991490,88cyclictest0-21swapper/2512:26:0018
12493991456,83cyclictest0-21swapper/308:00:0123
12493991456,83cyclictest0-21swapper/308:00:0123
12493991451,86cyclictest0-21swapper/307:29:3423
12493991451,86cyclictest0-21swapper/307:29:3323
125939914313,86cyclictest0-21swapper/2308:00:2116
125939914313,86cyclictest0-21swapper/2308:00:2116
125399914152,88cyclictest0-21swapper/1410:52:496
124939914125,99cyclictest0-21swapper/312:01:3523
124939914033,64cyclictest0-21swapper/311:16:4123
12600991390,85cyclictest0-21swapper/2509:19:5118
125239913816,99cyclictest0-21swapper/1011:52:062
124939913834,64cyclictest0-21swapper/309:01:4123
124939913815,68cyclictest0-21swapper/310:53:5523
126139913728,84cyclictest0-21swapper/2811:20:1121
12493991370,76cyclictest0-21swapper/308:28:2123
12493991370,76cyclictest0-21swapper/308:28:2023
124829913721,55cyclictest0-21swapper/108:51:161
124829913721,55cyclictest0-21swapper/108:51:161
124939913698,38cyclictest34-21ksoftirqd/310:30:1123
124939913630,72cyclictest0-21swapper/311:10:1623
124939913630,70cyclictest0-21swapper/309:11:3723
124939913629,72cyclictest0-21swapper/311:30:3523
124939913446,56cyclictest0-21swapper/312:20:1723
124939913445,58cyclictest0-21swapper/311:36:2823
124939913430,69cyclictest0-21swapper/309:43:3923
124939913428,68cyclictest0-21swapper/310:38:4423
126139913324,85cyclictest0-21swapper/2810:45:2221
124939913362,47cyclictest0-21swapper/310:29:0723
124939913330,68cyclictest0-21swapper/310:49:5823
124939913328,68cyclictest0-21swapper/309:57:3523
12488991330,86cyclictest0-21swapper/211:09:2612
125239913219,86cyclictest0-21swapper/1012:34:182
125239913219,86cyclictest0-21swapper/1012:34:182
124939913257,60cyclictest0-21swapper/309:39:5723
124939913228,68cyclictest0-21swapper/311:45:0123
124939913224,63cyclictest0-21swapper/311:07:3623
124829913250,53cyclictest0-21swapper/110:45:591
125069913116,78cyclictest0-21swapper/610:09:5528
124939913148,53cyclictest0-21swapper/310:44:3723
124939913134,66cyclictest0-21swapper/307:50:2423
124939913134,66cyclictest0-21swapper/307:50:2423
124939913128,70cyclictest0-21swapper/310:08:2923
124939913128,69cyclictest0-21swapper/309:15:2223
124939913128,68cyclictest0-21swapper/312:07:2323
124939913128,65cyclictest0-21swapper/310:19:3123
12523991300,86cyclictest0-21swapper/1008:10:162
12523991300,86cyclictest0-21swapper/1008:10:162
124939913048,52cyclictest0-21swapper/308:42:4523
124939913048,52cyclictest0-21swapper/308:42:4523
124939913032,73cyclictest0-21swapper/309:29:2823
124939913029,71cyclictest0-21swapper/312:33:5223
124939913029,71cyclictest0-21swapper/312:33:5223
124939913027,68cyclictest0-21swapper/308:37:1023
124939913027,68cyclictest0-21swapper/308:37:1023
124829913039,59cyclictest0-21swapper/110:14:071
125939912913,84cyclictest0-21swapper/2312:25:5216
125939912913,84cyclictest0-21swapper/2312:25:5216
124939912932,74cyclictest0-21swapper/307:40:1423
124939912932,74cyclictest0-21swapper/307:40:1423
124939912931,79cyclictest0-21swapper/310:20:1923
124939912928,70cyclictest0-21swapper/310:04:0023
124939912928,66cyclictest0-21swapper/307:38:1923
124939912928,66cyclictest0-21swapper/307:38:1923
124829912954,59cyclictest0-21swapper/110:38:421
124829912953,61cyclictest0-21swapper/109:12:581
124829912924,62cyclictest0-21swapper/112:01:201
126139912823,70cyclictest0-21swapper/2808:10:2321
126139912823,70cyclictest0-21swapper/2808:10:2321
126009912829,72cyclictest0-21swapper/2511:14:2318
125239912851,59cyclictest0-21swapper/1009:58:462
125239912847,56cyclictest0-21swapper/1009:17:372
124939912831,76cyclictest0-21swapper/308:49:2423
124939912831,76cyclictest0-21swapper/308:49:2323
124939912827,68cyclictest0-21swapper/310:13:0623
124829912844,55cyclictest0-21swapper/109:09:421
124829912839,61cyclictest0-21swapper/110:07:261
126139912727,48cyclictest0-21swapper/2811:15:0121
126009912722,61cyclictest0-21swapper/2509:20:0918
125939912744,58cyclictest0-21swapper/2311:58:1016
125239912749,56cyclictest0-21swapper/1010:59:102
124989912711,90cyclictest151rcu_preempt10:13:1226
124939912743,53cyclictest0-21swapper/309:45:1723
124939912732,74cyclictest0-21swapper/308:04:1723
124939912732,74cyclictest0-21swapper/308:04:1723
124939912732,74cyclictest0-21swapper/307:10:2023
124939912727,74cyclictest0-21swapper/311:56:1423
124939912724,61cyclictest0-21swapper/312:16:0123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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