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2026-09-08 - 01:40
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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 rack0slot2.osadl.org (updated Tue Sep 08, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
223027925140,8sleep50-21swapper/519:06:265
2230769994540,4cyclictest2930527-21latency_hist00:19:107
22220272452,31sleep70-21swapper/719:04:287
223076999360,34cyclictest2553187-21latency_hist21:44:107
223028923624,8sleep40-21swapper/419:06:334
2230768993532,2cyclictest2166787-21kworker/u16:1+flush-8:020:04:296
2230769993325,7cyclictest2263641-21latency_hist19:24:117
223046223221,8sleep60-21swapper/619:09:006
2230769993125,5cyclictest2845243-21latency_hist23:44:107
2230759993129,2cyclictest2589675-21kworker/u16:1+events_unbound22:44:394
2230763993028,2cyclictest2166787-21kworker/u16:1+flush-8:020:14:385
2230769992924,4cyclictest2906101-21latency_hist00:09:107
2230763992925,3cyclictest2589675-21kworker/u16:1+flush-8:022:24:275
2230759992927,2cyclictest2881878-21kworker/u16:2+events_unbound00:09:294
2230759992926,3cyclictest2660230-21kworker/u16:3+flush-8:022:44:104
2230769992821,6cyclictest2662592-21latency_hist22:29:107
2230759992725,2cyclictest2674887-21kworker/u16:4+events_unbound23:14:404
2230759992725,2cyclictest2674887-21kworker/u16:4+events_unbound23:14:404
2230763992522,2cyclictest2489884-21kworker/u16:1+flush-8:021:24:265
2230759992523,2cyclictest2563674-21kworker/u16:2+flush-8:021:54:394
223076999240,22cyclictest2954864-21latency_hist00:29:097
2230763992422,2cyclictest2502927-21kworker/u16:3+flush-8:021:49:365
2230763992422,2cyclictest2502927-21kworker/u16:3+flush-8:021:49:365
2230763992421,2cyclictest2674887-21kworker/u16:4+events_unbound23:04:255
2230759992422,2cyclictest2502927-21kworker/u16:3+events_unbound21:24:254
2230759992422,2cyclictest2166787-21kworker/u16:1+flush-8:020:14:264
2230759992421,2cyclictest2589675-21kworker/u16:1+flush-8:022:04:104
2230759992421,2cyclictest2541046-21kworker/u16:0+flush-8:022:14:234
2230768992321,2cyclictest2322404-21kworker/u16:0+flush-8:020:24:396
2230763992321,2cyclictest2881878-21kworker/u16:2+events_unbound00:14:345
2230763992321,2cyclictest2869988-21kworker/u16:0+flush-8:000:24:255
2230763992321,2cyclictest2674887-21kworker/u16:4+flush-8:023:29:395
2230763992319,4cyclictest2166787-21kworker/u16:1+flush-8:020:09:115
2230759992321,2cyclictest2528696-21kworker/u16:1+events_unbound21:34:354
2230759992320,2cyclictest2390024-21kworker/u16:3+events_unbound20:34:354
2230768992220,2cyclictest2589675-21kworker/u16:1+events_unbound22:24:396
2230763992220,2cyclictest2528696-21kworker/u16:1+flush-8:021:34:275
2230763992119,2cyclictest2699150-21kworker/u16:2+flush-8:022:54:255
2230763992119,2cyclictest2502927-21kworker/u16:3+events_unbound22:09:385
2230763992119,2cyclictest2390462-21kworker/u16:4+flush-8:020:59:395
2230763992119,2cyclictest2322404-21kworker/u16:0+flush-8:020:44:385
2230759992120,1cyclictest2674887-21kworker/u16:4+events_unbound23:02:044
2230759992119,2cyclictest2166787-21kworker/u16:1+flush-8:019:44:364
2230759992119,2cyclictest2166787-21kworker/u16:1+flush-8:019:44:364
2230769992016,3cyclictest126-21kswapd022:33:277
2230768992016,3cyclictest2869988-21kworker/u16:0+flush-8:023:59:266
2230763992018,2cyclictest2758210-21kworker/u16:0+flush-8:023:09:305
2230763992017,3cyclictest2881878-21kworker/u16:2+flush-8:000:00:505
2230763992016,3cyclictest2674887-21kworker/u16:4+flush-8:022:59:275
2230759992018,2cyclictest2166787-21kworker/u16:1+flush-8:019:39:474
223076999190,17cyclictest2857405-21latency_hist23:49:097
2230759991816,2cyclictest2881878-21kworker/u16:2+flush-8:000:19:484
2230759991816,2cyclictest2390462-21kworker/u16:4+flush-8:020:49:384
2230759991815,2cyclictest2660230-21kworker/u16:3+flush-8:022:29:244
2230769991714,2cyclictest1277-21snmpd20:13:497
2230769991712,4cyclictest2399784-21latency_hist20:34:107
2230769991712,4cyclictest2399784-21latency_hist20:34:107
2230763991714,3cyclictest2390024-21kworker/u16:3+flush-8:020:29:275
2230763991714,3cyclictest2390024-21kworker/u16:3+flush-8:020:29:275
2230763991714,2cyclictest2166787-21kworker/u16:1+events_unbound19:44:245
2230763991714,2cyclictest2166787-21kworker/u16:1+events_unbound19:44:245
2230769991613,2cyclictest1277-21snmpd00:01:427
223076999160,3cyclictest2647405-21ssh22:19:347
2230763991614,2cyclictest2869988-21kworker/u16:0+flush-8:000:29:515
223076399160,15cyclictest2976203-21ntpq00:34:345
223076399160,15cyclictest2976203-21ntpq00:34:345
2230759991613,2cyclictest2660230-21kworker/u16:3+flush-8:023:44:244
223075999160,16cyclictest0-21swapper/421:04:364
23231622150,1sleep60-21swapper/619:54:266
223076999156,5cyclictest6175-21gvfs-afc-volume22:13:327
2230769991512,2cyclictest2976187-21ssh00:34:347
2230769991512,2cyclictest2976187-21ssh00:34:347
2230769991512,2cyclictest1277-21snmpd21:55:167
223076999150,13cyclictest1277-21snmpd22:38:567
2230768991514,1cyclictest0-21swapper/621:22:486
2230768991512,3cyclictest2674887-21kworker/u16:4+flush-8:022:59:346
2230763991512,3cyclictest2699150-21kworker/u16:2+flush-8:022:49:425
2230759991514,1cyclictest0-21swapper/419:54:274
2230759991513,2cyclictest2430701-21kworker/u16:2+flush-8:021:19:414
223075999150,15cyclictest0-21swapper/422:08:564
223076999145,8cyclictest1017-21in:imjournal23:24:287
223076999141,11cyclictest2537935-21ssh21:34:357
2230769991410,3cyclictest6175-21gvfs-afc-volume19:09:377
223076999140,1cyclictest0-21swapper/723:29:337
223076999140,1cyclictest0-21swapper/721:29:387
2230768991413,1cyclictest0-21swapper/623:28:466
2230768991413,1cyclictest0-21swapper/622:39:546
2230768991413,1cyclictest0-21swapper/622:02:236
2230768991413,1cyclictest0-21swapper/621:25:396
2230768991413,1cyclictest0-21swapper/600:35:466
2230768991413,1cyclictest0-21swapper/600:35:466
2230768991412,1cyclictest2603153-21smartctl22:04:256
223076899140,14cyclictest0-21swapper/623:45:196
223076899140,14cyclictest0-21swapper/600:25:226
2230763991413,1cyclictest0-21swapper/523:44:365
2230763991413,1cyclictest0-21swapper/523:19:135
2230763991413,1cyclictest0-21swapper/522:34:275
2230763991413,1cyclictest0-21swapper/522:16:575
2230763991413,1cyclictest0-21swapper/521:54:335
2230763991413,1cyclictest0-21swapper/500:19:455
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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