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2026-06-23 - 08:38
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Tue Jun 23, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
210872700,0sleep00-21swapper/021:28:530
2321826755,8sleep10-21swapper/119:05:151
2316726755,7sleep00-21swapper/019:04:420
255272600,1sleep10-21swapper/123:03:011
2372399364,3cyclictest24-21ksoftirqd/121:28:561
2372399344,1cyclictest91rcu_preempt00:33:361
2372399319,3cyclictest91rcu_preempt19:48:541
2372399319,21cyclictest0-21swapper/123:21:431
2372399317,4cyclictest91rcu_preempt00:25:491
2372399314,3cyclictest91rcu_preempt00:13:351
2372399313,1cyclictest91rcu_preempt22:43:381
2372399313,11cyclictest24-21ksoftirqd/123:32:031
23723993113,9cyclictest24-21ksoftirqd/123:51:221
23723993029,0cyclictest231ktimersoftd/121:18:121
23723993028,2cyclictest0-21swapper/121:54:221
23723992928,0cyclictest24-21ksoftirqd/123:38:081
2372399292,6cyclictest91rcu_preempt22:00:091
23723992826,2cyclictest0-21swapper/100:19:591
23723992812,1cyclictest91rcu_preempt22:24:121
23723992810,8cyclictest0-21swapper/123:43:561
23723992726,1cyclictest24-21ksoftirqd/121:48:531
23723992726,1cyclictest0-21swapper/121:26:191
23723992726,0cyclictest24-21ksoftirqd/100:36:101
23723992719,4cyclictest24-21ksoftirqd/121:40:441
23723992716,2cyclictest91rcu_preempt19:58:241
23722992710,1cyclictest0-21swapper/022:17:080
2372299270,4cyclictest0-21swapper/022:56:130
23723992625,1cyclictest0-21swapper/122:13:551
23723992624,2cyclictest0-21swapper/122:42:471
23723992624,0cyclictest24-21ksoftirqd/122:21:471
23723992619,2cyclictest24-21ksoftirqd/120:27:411
2372399260,0cyclictest91rcu_preempt21:12:181
23722992611,3cyclictest10521-21kworker/u4:021:23:550
23722992610,6cyclictest0-21swapper/000:09:560
23722992610,15cyclictest0-21swapper/019:09:540
2372399255,5cyclictest0-21swapper/122:48:481
2372399252,3cyclictest91rcu_preempt21:04:381
23723992523,1cyclictest0-21swapper/123:24:001
23723992523,1cyclictest0-21swapper/119:58:591
23723992522,2cyclictest0-21swapper/120:08:581
23723992519,6cyclictest0-21swapper/122:33:121
23723992512,11cyclictest0-21swapper/120:58:111
23722992516,3cyclictest29821-21apache_accesses23:08:480
2372299251,15cyclictest0-21swapper/000:31:560
2372399248,5cyclictest24-21ksoftirqd/122:55:101
2372399245,4cyclictest91rcu_preempt21:45:481
23723992422,2cyclictest0-21swapper/123:06:571
23723992421,0cyclictest0-21swapper/120:03:571
23723992420,2cyclictest0-21swapper/123:14:291
23723992410,1cyclictest91rcu_preempt19:39:521
23722992410,6cyclictest0-21swapper/020:03:550
23722992410,3cyclictest0-21swapper/022:32:000
2372299240,12cyclictest744-21snmpd19:53:490
2372399239,2cyclictest91rcu_preempt21:18:541
2372399233,15cyclictest0-21swapper/120:28:541
23723992321,2cyclictest0-21swapper/123:11:421
23723992321,2cyclictest0-21swapper/119:37:041
23723992320,2cyclictest5830-21df_inode00:03:491
23723992318,2cyclictest24-21ksoftirqd/100:00:151
23723992315,6cyclictest231ktimersoftd/121:36:591
23723992310,12cyclictest0-21swapper/100:13:451
23723992310,10cyclictest0-21swapper/123:55:421
23722992323,0cyclictest0-21swapper/022:13:190
23722992315,7cyclictest0-21swapper/020:58:160
23722992310,6cyclictest0-21swapper/022:25:000
23722992310,4cyclictest0-21swapper/022:44:180
23722992310,3cyclictest0-21swapper/019:18:370
2372399229,11cyclictest0-21swapper/120:59:081
23723992219,2cyclictest22291-21ssh23:41:571
23723992218,3cyclictest23720-21cyclictest22:35:081
23723992216,3cyclictest802-21apache220:39:481
23723992213,1cyclictest0-21swapper/120:50:141
23723992210,9cyclictest0-21swapper/119:10:101
2372299222,13cyclictest0-21swapper/021:52:050
23722992216,5cyclictest29213-21apache200:06:470
23722992216,4cyclictest0-21swapper/023:41:390
23722992215,5cyclictest29243-21apache223:13:530
2372299221,20cyclictest0-21swapper/023:53:500
23722992211,5cyclictest0-21swapper/023:48:480
23722992210,0cyclictest0-21swapper/023:08:350
2372299220,16cyclictest0-21swapper/020:31:520
23723992120,1cyclictest0-21swapper/122:07:531
23723992118,2cyclictest27860-21apache_volume20:43:491
23723992115,3cyclictest24-21ksoftirqd/119:21:261
23723992112,8cyclictest0-21swapper/120:18:511
23722992120,1cyclictest29213-21apache223:24:270
23722992118,1cyclictest81ktimersoftd/020:33:520
2372299210,9cyclictest0-21swapper/000:23:480
2372399209,7cyclictest0-21swapper/119:23:511
23723992018,0cyclictest0-21swapper/122:10:031
23723992011,7cyclictest24775-21ntp_states20:33:531
2372299206,8cyclictest0-21swapper/022:40:480
2372299205,13cyclictest6890-21ssh21:53:480
2372299202,6cyclictest0-21swapper/022:48:520
23722992020,0cyclictest0-21swapper/020:18:220
23722992018,1cyclictest0-21swapper/023:29:370
23722992014,3cyclictest0-21swapper/000:16:150
23722992012,6cyclictest29243-21apache223:03:360
23722992011,1cyclictest16297-21ssh21:23:240
23722992010,8cyclictest0-21swapper/023:37:090
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