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2026-05-19 - 02:05
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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
Characteristics of the 50 highest latencies:
System rackcslot2.osadl.org (updated Mon May 18, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1763726856,8sleep10-21swapper/107:04:251
1777526552,8sleep00-21swapper/007:05:500
18254993310,22cyclictest0-21swapper/109:16:141
18253993110,16cyclictest0-21swapper/010:26:150
18254993020,4cyclictest24-21ksoftirqd/107:09:131
18253993010,18cyclictest0-21swapper/011:12:470
18254992910,7cyclictest0-21swapper/109:04:071
18254992721,5cyclictest28160-21apache210:08:381
18254992711,10cyclictest100350irq/108-eth1-tx12:17:211
1825399272,24cyclictest0-21swapper/009:59:120
18254992622,3cyclictest28136-21apache209:09:161
18254992620,5cyclictest28136-21apache211:33:331
18253992610,16cyclictest0-21swapper/011:07:120
1543122610,3sleep00-21swapper/011:36:090
18254992524,1cyclictest0-21swapper/111:37:511
18254992523,1cyclictest24-21ksoftirqd/110:50:511
18254992510,7cyclictest0-21swapper/109:49:331
18253992523,1cyclictest0-21swapper/012:33:360
1825399251,23cyclictest0-21swapper/011:03:090
18253992510,6cyclictest0-21swapper/011:27:390
18253992510,0cyclictest0-21swapper/012:03:560
18254992410,13cyclictest0-21swapper/110:48:011
18254992410,12cyclictest0-21swapper/109:26:491
18253992417,5cyclictest7578-21ssh10:43:470
18253992416,6cyclictest28160-21apache209:26:260
1825399241,22cyclictest0-21swapper/009:14:420
1825499232,7cyclictest20733-21ssh09:34:141
18254992321,1cyclictest24-21ksoftirqd/112:24:101
18254992320,1cyclictest0-21swapper/110:55:561
1825499231,1cyclictest0-21swapper/108:14:321
18254992310,11cyclictest0-21swapper/109:47:521
18253992323,0cyclictest0-21swapper/008:14:020
18253992319,1cyclictest0-21swapper/009:42:320
18253992318,5cyclictest0-21swapper/007:42:280
18253992311,4cyclictest100450irq/109-eth1-tx11:21:010
18253992310,6cyclictest0-21swapper/009:54:130
1825399230,1cyclictest0-21swapper/012:12:480
1825399230,13cyclictest0-21swapper/008:19:110
1825499222,1cyclictest26618-21users10:24:151
1825499222,19cyclictest23660-21ssh11:47:471
18254992221,1cyclictest28136-21apache211:52:081
18254992220,1cyclictest24-21ksoftirqd/110:33:541
18254992210,8cyclictest0-21swapper/111:01:361
18254992210,4cyclictest0-21swapper/110:43:301
18254992210,4cyclictest0-21swapper/107:30:321
18254992210,10cyclictest0-21swapper/111:28:201
18253992221,1cyclictest0-21swapper/007:21:020
1825399222,0cyclictest10401-21ls08:09:160
18253992216,5cyclictest28136-21apache210:44:130
18253992212,4cyclictest0-21swapper/010:49:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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