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2026-05-29 - 19:21
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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 Fri May 29, 2026 12:48:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2483299376373,2cyclictest23986-21lspci11:50:5116
248139926770,1cyclictest151rcu_preempt09:22:5513
3273912620,252ptp4l0-21swapper/107:06:211
3273912620,252ptp4l0-21swapper/107:06:211
235342208204,2sleep80-21swapper/807:10:0130
235342208204,2sleep80-21swapper/807:10:0130
248139917968,0cyclictest151rcu_preempt12:10:1313
24877991480,21cyclictest0-21swapper/2911:40:5922
24820991480,85cyclictest0-21swapper/2108:20:2914
247849914815,26cyclictest0-21swapper/1611:04:178
248779914725,72cyclictest0-21swapper/2907:34:2522
248779914725,72cyclictest0-21swapper/2907:34:2522
247849914136,69cyclictest0-21swapper/1611:10:108
247849914130,77cyclictest0-21swapper/1610:40:138
248779914022,102cyclictest0-21swapper/2910:25:4022
248209914046,58cyclictest0-21swapper/2108:05:1714
247299914050,87cyclictest0-21swapper/810:08:4730
2485599139131,3cyclictest151rcu_preempt10:35:4719
248209913950,60cyclictest0-21swapper/2109:29:2514
248329913825,64cyclictest0-21swapper/2312:35:2716
248209913852,57cyclictest0-21swapper/2107:14:4614
248209913852,57cyclictest0-21swapper/2107:14:4614
248209913848,57cyclictest0-21swapper/2112:35:2514
248209913844,62cyclictest0-21swapper/2109:51:2014
248779913741,70cyclictest0-21swapper/2911:47:2722
248209913758,66cyclictest0-21swapper/2111:18:5914
248209913748,56cyclictest0-21swapper/2112:08:4214
248209913748,56cyclictest0-21swapper/2112:08:4214
248209913747,57cyclictest0-21swapper/2110:51:1214
248209913728,69cyclictest0-21swapper/2111:22:1214
247849913732,65cyclictest0-21swapper/1610:12:068
247849913720,78cyclictest0-21swapper/1611:07:378
248209913651,56cyclictest0-21swapper/2110:49:3614
248209913649,58cyclictest0-21swapper/2111:10:2614
248209913648,58cyclictest0-21swapper/2109:20:3814
247849913621,114cyclictest0-21swapper/1611:00:018
24894991354,126cyclictest0-21swapper/3109:44:0125
24877991350,75cyclictest0-21swapper/2908:50:1922
248329913527,69cyclictest0-21swapper/2310:17:3316
248209913548,60cyclictest0-21swapper/2111:41:2614
248209913526,65cyclictest0-21swapper/2110:55:2814
247849913551,63cyclictest0-21swapper/1609:39:298
248209913445,60cyclictest0-21swapper/2109:44:5514
248209913432,67cyclictest0-21swapper/2110:09:4614
248209913431,73cyclictest0-21swapper/2112:02:1714
248209913430,74cyclictest0-21swapper/2109:58:1814
248209913430,68cyclictest0-21swapper/2109:39:3514
248209913429,70cyclictest0-21swapper/2111:00:2514
248209913428,69cyclictest0-21swapper/2111:52:5614
248209913426,65cyclictest0-21swapper/2110:40:3014
24894991334,125cyclictest0-21swapper/3109:00:1125
248329913352,62cyclictest0-21swapper/2311:24:5416
248329913351,61cyclictest0-21swapper/2307:30:4316
248329913351,61cyclictest0-21swapper/2307:30:4216
248329913346,56cyclictest0-21swapper/2310:13:1716
248329913328,67cyclictest0-21swapper/2311:29:4316
248209913343,60cyclictest0-21swapper/2108:25:3614
248209913331,78cyclictest0-21swapper/2107:23:1914
248209913331,78cyclictest0-21swapper/2107:23:1914
248209913331,69cyclictest0-21swapper/2112:19:2314
248209913330,70cyclictest0-21swapper/2112:11:5414
248209913330,70cyclictest0-21swapper/2110:29:4914
248209913330,68cyclictest0-21swapper/2111:27:0014
248209913329,68cyclictest0-21swapper/2109:16:2014
248209913328,71cyclictest0-21swapper/2110:37:5014
248209913328,66cyclictest0-21swapper/2107:33:2814
248209913328,66cyclictest0-21swapper/2107:33:2814
248209913328,63cyclictest0-21swapper/2107:16:2214
248209913328,63cyclictest0-21swapper/2107:16:2214
248329913226,61cyclictest0-21swapper/2309:27:1916
248329913224,65cyclictest0-21swapper/2310:25:0216
248209913228,68cyclictest0-21swapper/2108:35:1314
24691991320,88cyclictest0-21swapper/308:45:1823
248209913148,60cyclictest0-21swapper/2111:32:5314
248209913144,57cyclictest0-21swapper/2111:36:3814
248209913131,77cyclictest0-21swapper/2111:55:5214
248209913131,76cyclictest0-21swapper/2112:33:3514
248209913131,76cyclictest0-21swapper/2112:33:3414
248209913129,71cyclictest0-21swapper/2108:56:3514
248209913126,64cyclictest0-21swapper/2109:09:4014
247849913117,63cyclictest112-21ksoftirqd/1611:29:278
248869913016,67cyclictest0-21swapper/3010:56:4224
248329913028,67cyclictest0-21swapper/2311:00:4916
248329913028,67cyclictest0-21swapper/2310:30:2316
248329913027,67cyclictest0-21swapper/2311:30:1516
248329913025,68cyclictest0-21swapper/2308:07:0916
248329913025,67cyclictest0-21swapper/2312:33:5216
248329913025,67cyclictest0-21swapper/2312:33:5116
24832991300,85cyclictest0-21swapper/2309:38:1416
248209913054,62cyclictest0-21swapper/2109:30:2914
248209913031,71cyclictest0-21swapper/2110:34:2214
247849913050,56cyclictest0-21swapper/1609:32:238
247849913027,78cyclictest0-21swapper/1610:17:148
248329912931,70cyclictest0-21swapper/2311:35:3416
248329912929,70cyclictest0-21swapper/2308:43:2316
248329912928,65cyclictest0-21swapper/2312:00:1216
248209912963,62cyclictest0-21swapper/2107:27:0314
248209912963,62cyclictest0-21swapper/2107:27:0314
248209912945,52cyclictest0-21swapper/2107:35:0414
248209912945,52cyclictest0-21swapper/2107:35:0414
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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