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2026-04-11 - 14:21
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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 Sat Apr 11, 2026 00:49:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913070,299ptp4l0-21swapper/119:09:111
330891226217,6phc2sys0-21swapper/219:05:1712
23631992033,197cyclictest200151kworker/u65:122:15:3921
236369918112,148cyclictest0-21swapper/2900:12:2322
236369918112,148cyclictest0-21swapper/2900:12:2322
236369916112,147cyclictest0-21swapper/2922:40:1922
236369915812,136cyclictest0-21swapper/2923:29:0522
236369915812,136cyclictest0-21swapper/2923:29:0522
236109915838,46cyclictest161-21ksoftirqd/2421:18:5917
236439915724,86cyclictest2331-21timerandwakeup19:40:2325
235469915712,39cyclictest0-21swapper/922:14:2831
236369915412,50cyclictest0-21swapper/2919:43:0222
236109915434,97cyclictest0-21swapper/2422:45:1517
236439914750,45cyclictest0-21swapper/3121:26:1125
235469914713,95cyclictest0-21swapper/920:18:3731
23627991450,87cyclictest0-21swapper/2720:22:3020
235579914338,69cyclictest0-21swapper/1221:45:594
235469914313,78cyclictest0-21swapper/923:52:1631
235469914313,78cyclictest0-21swapper/923:52:1631
236109914227,72cyclictest0-21swapper/2421:53:0517
235469914212,91cyclictest0-21swapper/900:25:1331
235469914212,91cyclictest0-21swapper/900:25:1331
235749914123,59cyclictest0-21swapper/1600:25:228
235749914123,59cyclictest0-21swapper/1600:25:228
236369913912,91cyclictest0-21swapper/2921:11:3122
23610991390,81cyclictest0-21swapper/2419:45:2517
235749913924,75cyclictest0-21swapper/1619:36:568
236369913812,77cyclictest0-21swapper/2923:46:3022
236369913812,77cyclictest0-21swapper/2923:46:3022
236439913727,94cyclictest0-21swapper/3121:50:4725
235749913751,54cyclictest0-21swapper/1622:46:338
236009913632,67cyclictest0-21swapper/2222:43:0015
235749913651,58cyclictest0-21swapper/1600:24:488
235749913651,58cyclictest0-21swapper/1600:24:488
236439913527,64cyclictest0-21swapper/3123:56:5425
236439913527,64cyclictest0-21swapper/3123:56:5425
23636991350,81cyclictest0-21swapper/2922:53:1722
235579913549,65cyclictest0-21swapper/1223:43:184
235579913549,65cyclictest0-21swapper/1223:43:174
235749913448,59cyclictest0-21swapper/1622:22:568
235749913437,65cyclictest0-21swapper/1621:38:148
235749913423,64cyclictest0-21swapper/1600:02:538
235749913423,64cyclictest0-21swapper/1600:02:538
235579913450,59cyclictest0-21swapper/1221:55:214
235469913412,90cyclictest0-21swapper/923:46:2331
235469913412,90cyclictest0-21swapper/923:46:2231
235469913412,89cyclictest0-21swapper/922:32:4431
23610991330,81cyclictest0-21swapper/2420:45:1717
235749913348,52cyclictest0-21swapper/1623:36:418
235749913348,52cyclictest0-21swapper/1623:36:418
235749913328,69cyclictest0-21swapper/1600:32:288
235749913328,69cyclictest0-21swapper/1600:32:278
235749913327,66cyclictest0-21swapper/1623:09:588
235469913313,61cyclictest0-21swapper/920:55:2231
236109913226,70cyclictest0-21swapper/2422:10:1517
235749913243,57cyclictest0-21swapper/1622:57:088
235749913229,63cyclictest0-21swapper/1623:26:158
235749913229,63cyclictest0-21swapper/1623:26:148
235579913243,62cyclictest0-21swapper/1219:50:014
235749913144,59cyclictest0-21swapper/1621:29:298
235749913130,67cyclictest0-21swapper/1621:45:328
235749913129,71cyclictest0-21swapper/1621:51:368
235749913128,70cyclictest0-21swapper/1622:13:238
235749913127,69cyclictest0-21swapper/1622:40:028
235579913149,54cyclictest0-21swapper/1223:54:494
235579913149,54cyclictest0-21swapper/1223:54:484
235579913128,67cyclictest0-21swapper/1223:18:274
235749913030,77cyclictest0-21swapper/1622:17:068
235749913030,67cyclictest0-21swapper/1623:34:358
235749913030,67cyclictest0-21swapper/1623:34:358
235749913029,63cyclictest0-21swapper/1622:29:058
235749913027,69cyclictest0-21swapper/1623:19:048
235749913026,70cyclictest0-21swapper/1619:20:108
235749913024,105cyclictest0-21swapper/1623:50:368
235749913024,105cyclictest0-21swapper/1623:50:368
235579913046,57cyclictest0-21swapper/1222:34:374
235579913043,57cyclictest0-21swapper/1222:24:284
235579913027,68cyclictest0-21swapper/1223:26:314
235579913027,68cyclictest0-21swapper/1223:26:304
235579913027,64cyclictest0-21swapper/1219:59:094
23600991290,96cyclictest0-21swapper/2222:03:5915
235749912948,59cyclictest0-21swapper/1620:10:258
235749912942,61cyclictest0-21swapper/1619:45:158
235749912930,72cyclictest0-21swapper/1622:55:008
235749912929,70cyclictest0-21swapper/1621:30:458
235749912928,68cyclictest0-21swapper/1623:14:268
235749912928,68cyclictest0-21swapper/1623:14:268
235749912926,59cyclictest0-21swapper/1623:56:258
235749912926,59cyclictest0-21swapper/1623:56:258
235749912925,69cyclictest0-21swapper/1621:23:368
235579912929,66cyclictest0-21swapper/1222:18:194
235579912928,67cyclictest0-21swapper/1223:56:394
235579912928,67cyclictest0-21swapper/1223:56:394
235579912927,68cyclictest0-21swapper/1200:13:304
235579912927,68cyclictest0-21swapper/1200:13:304
235579912927,67cyclictest0-21swapper/1223:36:204
235579912927,67cyclictest0-21swapper/1223:36:204
235579912925,70cyclictest0-21swapper/1200:25:484
235579912925,70cyclictest0-21swapper/1200:25:484
235469912912,96cyclictest0-21swapper/922:22:2931
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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