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2026-03-15 - 12:26
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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
Characteristics of the 376 highest latencies:
System rack6slot6 (updated Sun Mar 15, 2026 00:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2179599209928105447,104479cyclictest0-21swapper23:56:200
217959910702853401,53537cyclictest7317-1kworker/u3:222:15:100
217959910672053439,53281cyclictest0-21swapper21:47:220
217959910666653389,53186cyclictest9-21ksoftirqd/022:34:460
217959910665253411,53176cyclictest0-21swapper00:34:200
217959910664353457,53186cyclictest0-21swapper22:09:590
217959910662253478,53144cyclictest0-21swapper19:43:070
217959910660653433,53173cyclictest0-21swapper22:03:370
217959910656053459,53101cyclictest0-21swapper21:39:000
217959910655753426,53131cyclictest0-21swapper21:58:560
217959910653153482,53049cyclictest0-21swapper23:38:540
217959910651853480,53038cyclictest0-21swapper00:01:210
217959910651553475,53040cyclictest0-21swapper20:05:330
217959910651153471,53040cyclictest0-21swapper19:59:010
217959910650453468,52974cyclictest3950irq/9-acpi00:24:380
217959910648653419,53067cyclictest0-21swapper20:59:180
217959910647853416,53062cyclictest0-21swapper22:41:080
217959910646953453,53016cyclictest0-21swapper20:35:220
217959910645953458,53001cyclictest0-21swapper20:53:470
217959910644853444,53004cyclictest0-21swapper21:42:010
217959910644253452,52990cyclictest0-21swapper23:05:550
217959910635953473,52886cyclictest0-21swapper20:41:530
217959910633453397,52873cyclictest0-21swapper19:23:410
217959910632753390,52872cyclictest9-21ksoftirqd/020:18:570
217959910627953385,52804cyclictest0-21swapper23:34:530
217959910627453414,52860cyclictest0-21swapper19:37:350
217959910625653446,52694cyclictest0-21swapper21:09:410
217959910619953422,52777cyclictest0-21swapper20:14:560
217959910617853454,52724cyclictest0-21swapper20:20:470
217959910614253434,52708cyclictest0-21swapper20:29:400
217959910614253433,52709cyclictest0-21swapper19:50:490
217959910614053392,52748cyclictest0-21swapper19:30:030
217959910514053022,52118cyclictest0-21swapper00:05:320
217959910506252954,52106cyclictest0-21swapper23:52:590
21795995364928,18cyclictest9-21ksoftirqd/023:40:350
21795995363724,53493cyclictest0-21swapper00:11:440
21795995346025,53435cyclictest0-21swapper20:49:160
21795995339825,53373cyclictest0-21swapper22:53:110
21795995317028,53075cyclictest3950irq/9-acpi22:24:130
21795995313526,53109cyclictest0-21swapper21:16:130
21795995310925,53084cyclictest0-21swapper19:28:120
21795995308327,53056cyclictest0-21swapper23:12:070
21795995306526,53039cyclictest0-21swapper00:36:110
21795995306426,260cyclictest0-21swapper20:01:420
21795995293525,0cyclictest1994-21sendmail19:48:480
217959923661097,1202cyclictest77702sleep023:01:240
217959923231012,1185cyclictest24850-21ssh21:51:030
217959921061042,1028cyclictest0-21swapper23:24:200
217959920941039,1021cyclictest0-21swapper23:25:000
21795992093990,1068cyclictest17865-21ssh23:16:280
21795992031986,1010cyclictest0-21swapper00:15:050
217959920291082,823cyclictest6397-21ssh23:48:170
21795992018981,1003cyclictest0-21swapper22:35:460
217959919431013,896cyclictest0-21swapper21:03:300
217959919391037,780cyclictest0-21swapper22:49:000
217959918951050,845cyclictest0-21swapper00:29:290
217959918561077,779cyclictest0-21swapper22:26:340
21795991846926,883cyclictest4759-21ssh22:57:120
217959916091020,499cyclictest9-21ksoftirqd/021:22:350
217959916031094,509cyclictest0-21swapper21:13:020
217959915731080,493cyclictest0-21swapper21:29:270
21795991550979,535cyclictest11813-21ssh21:32:180
217959915411100,377cyclictest9-21ksoftirqd/022:14:000
217959914491088,361cyclictest0-21swapper20:33:510
21795991123616,503cyclictest29123-21hwlatdetect-tra19:10:370
21795991053583,467cyclictest19956-21hwlatdetect-tra19:19:100
2380621650,1sleep023803-21wc19:08:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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