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2025-12-22 - 22:14
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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 rack0slot7.osadl.org (updated Mon Dec 22, 2025 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1851690994664,56cyclictest2782215-21dd22:51:2015
1851694994611,56cyclictest2204920-21StreamT~s5
18516929946122,28cyclictest0-21swapper/1120:38:593
18516949945912,445cyclictest0-21swapper/1323:37:215
18516949945724,28cyclictest0-21swapper/1322:09:395
18516949945623,27cyclictest0-21swapper/1319:47:335
18516949945622,27cyclictest0-21swapper/1322:52:225
18516829945622,27cyclictest0-21swapper/122:18:391
18516909945320,27cyclictest0-21swapper/923:40:3915
18516949945218,27cyclictest0-21swapper/1320:43:215
18516869945219,27cyclictest0-21swapper/520:58:1711
18516829945220,429cyclictest0-21swapper/100:21:581
18516969944513,28cyclictest0-21swapper/1523:10:597
18516889944411,27cyclictest0-21swapper/721:29:5313
18516889944310,28cyclictest0-21swapper/723:34:5413
1851683994419,27cyclictest0-21swapper/219:58:428
18516969944011,428cyclictest0-21swapper/1521:40:227
1851694994394,28cyclictest0-21swapper/1323:15:525
1851690994372,27cyclictest0-21swapper/921:18:2215
18516889943729,407cyclictest1940389-21StreamT~13
18516859943723,28cyclictest0-21swapper/422:53:5910
1851683994376,27cyclictest0-21swapper/222:35:408
1851683994373,431cyclictest0-21swapper/220:18:218
1851683994370,26cyclictest0-21swapper/223:50:338
1851692994363,28cyclictest85650irq/167-nvme1q423:13:213
18516889943425,408cyclictest8771-21IPDL12:10:1913
1851683994341,431cyclictest0-21swapper/223:00:548
1851688994331,27cyclictest0-21swapper/721:19:5413
1851686994330,27cyclictest0-21swapper/519:56:5911
18516929943124,405cyclictest0-21swapper/1120:43:453
1851689994314,27cyclictest0-21swapper/821:25:4814
1851686994311,28cyclictest0-21swapper/523:19:0011
18516839943121,407cyclictest0-21swapper/222:53:228
18516889943023,407cyclictest0-21swapper/700:24:5413
1851684994300,27cyclictest0-21swapper/319:36:379
1851682994300,28cyclictest0-21swapper/120:02:591
18516929942923,0cyclictest85650irq/167-nvme1q419:17:443
18516929942822,406cyclictest0-21swapper/1122:35:593
1851683994284,27cyclictest3617411-21thunderbird00:08:208
18516909942722,402cyclictest31616-21Isolated12:10:1915
1851689994270,426cyclictest0-21swapper/820:32:5214
1851689994270,425cyclictest0-21swapper/821:16:2114
185168499427426,1cyclictest27750irq/127-ahci[0000:00:17.0]20:27:369
185168499427424,3cyclictest1938839-21kworker/3:1+i915-unordered19:26:509
185169099426424,1cyclictest0-21swapper/920:52:2415
18516909942619,405cyclictest0-21swapper/922:05:3315
18516909942619,404cyclictest0-21swapper/921:57:4415
18516889942621,404cyclictest0-21swapper/721:09:5413
18516899942522,402cyclictest0-21swapper/800:09:2214
185168899425424,1cyclictest2535918-21kworker/7:0+i915-unordered22:00:2013
18516909942422,0cyclictest85350irq/165-nvme1q222:20:4315
18516849942425,398cyclictest57-21ksoftirqd/322:14:229
18516939942317,403cyclictest0-21swapper/1222:25:354
18516939942317,403cyclictest0-21swapper/1221:56:234
18516939942316,406cyclictest0-21swapper/1223:18:224
18516939942316,405cyclictest0-21swapper/1200:12:454
18516939942316,404cyclictest0-21swapper/1219:56:454
18516939942315,407cyclictest0-21swapper/1221:12:214
18516899942321,401cyclictest0-21swapper/822:57:4514
18516939942215,404cyclictest0-21swapper/1223:47:324
18516939942215,403cyclictest0-21swapper/1220:49:204
18516939942215,403cyclictest0-21swapper/1220:49:204
18516939942214,407cyclictest0-21swapper/1200:29:214
18516939942213,405cyclictest0-21swapper/1220:09:274
18516939942115,406cyclictest0-21swapper/1221:06:574
18516939942115,404cyclictest0-21swapper/1223:59:514
18516939942115,404cyclictest0-21swapper/1223:03:224
18516939942114,406cyclictest0-21swapper/1221:42:224
18516929942115,403cyclictest0-21swapper/1120:06:223
18516969942018,402cyclictest0-21swapper/1522:33:597
18516939942014,405cyclictest0-21swapper/1222:33:174
185168399420419,1cyclictest0-21swapper/219:48:488
18516909941914,403cyclictest0-21swapper/922:58:4815
185168899419415,3cyclictest1769913-21kworker/7:1+pm19:15:5413
185169099418415,2cyclictest1850610-21kworker/9:2+pm20:01:4615
18516909941814,401cyclictest49802-21TaskCon~ller15
18516909941810,405cyclictest0-21swapper/921:28:2115
18516839941815,403cyclictest0-21swapper/222:07:598
18516889941712,404cyclictest0-21swapper/723:44:5413
18516859941715,399cyclictest0-21swapper/400:28:5810
18516849941716,400cyclictest0-21swapper/323:38:389
1851683994179,403cyclictest2422506-21kthreadcore21:25:258
1851690994169,405cyclictest0-21swapper/900:21:3615
18516869941610,403cyclictest0-21swapper/520:40:4211
18516839941610,403cyclictest0-21swapper/223:42:228
18516889941510,405cyclictest0-21swapper/700:29:5413
18516839941510,402cyclictest0-21swapper/219:10:218
1851690994148,403cyclictest0-21swapper/923:56:2215
1851690994147,406cyclictest0-21swapper/919:18:4515
1851683994149,405cyclictest0-21swapper/219:50:348
1851683994146,402cyclictest0-21swapper/221:48:458
18516839941414,397cyclictest0-21swapper/219:30:538
1851690994136,406cyclictest0-21swapper/920:41:4315
185168899413411,1cyclictest2122918-21kworker/7:1+i915-unordered20:29:4813
1851683994136,403cyclictest0-21swapper/220:21:228
1851683994136,403cyclictest0-21swapper/220:06:458
1851683994134,406cyclictest2920041-21dd23:25:228
185168299413412,1cyclictest3050503-21kworker/1:2+i915-unordered23:56:231
1851690994126,403cyclictest0-21swapper/921:20:2215
185168899412411,1cyclictest3009507-21kworker/7:2+i915-unordered23:49:3913
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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