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2026-01-06 - 13:49
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Tue Jan 06, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
108052720,0sleep00-21swapper/023:08:070
3171627057,9sleep10-21swapper/119:07:291
319712680,0sleep10-21swapper/122:12:031
3161725933,22sleep00-21swapper/019:06:280
32121993210,13cyclictest0-21swapper/021:54:470
32121993010,14cyclictest0-21swapper/000:03:210
3212299291,6cyclictest24-21ksoftirqd/122:21:051
32122992914,2cyclictest91rcu_preempt00:22:061
32122992827,0cyclictest24-21ksoftirqd/122:05:041
32122992827,0cyclictest24-21ksoftirqd/122:02:021
32122992826,1cyclictest24-21ksoftirqd/123:55:101
32121992810,10cyclictest0-21swapper/022:30:120
3212299274,2cyclictest91rcu_preempt20:12:281
32122992726,0cyclictest24-21ksoftirqd/123:30:021
32122992721,3cyclictest24-21ksoftirqd/122:25:051
3212299270,1cyclictest91rcu_preempt00:05:101
3212199271,25cyclictest0-21swapper/022:35:100
3212299266,2cyclictest91rcu_preempt23:54:031
3212299265,5cyclictest24-21ksoftirqd/123:14:511
32122992625,0cyclictest24-21ksoftirqd/123:17:361
3212299261,23cyclictest0-21swapper/121:41:141
3212299260,0cyclictest91rcu_preempt21:52:511
32121992618,7cyclictest30582-21apache200:16:580
32121992610,5cyclictest0-21swapper/022:15:030
32122992523,1cyclictest24-21ksoftirqd/100:15:111
3212299252,2cyclictest91rcu_preempt23:39:021
3212299252,2cyclictest91rcu_preempt21:21:251
32122992522,2cyclictest25808-21runrttasks21:24:591
3212299250,4cyclictest91rcu_preempt19:50:101
3212299250,3cyclictest91rcu_preempt23:00:081
32121992520,4cyclictest30582-21apache222:43:330
32121992510,1cyclictest0-21swapper/023:56:580
32121992510,10cyclictest0-21swapper/023:52:050
3212299248,6cyclictest0-21swapper/120:55:051
3212299244,3cyclictest24-21ksoftirqd/121:36:411
3212299243,1cyclictest91rcu_preempt22:16:001
3212299243,14cyclictest91rcu_preempt19:43:521
32122992420,3cyclictest24-21ksoftirqd/120:25:041
32122992418,2cyclictest24-21ksoftirqd/123:47:091
32122992410,7cyclictest0-21swapper/119:45:031
3212299240,5cyclictest0-21swapper/119:36:141
3212299240,3cyclictest91rcu_preempt22:39:141
3212199249,7cyclictest636-21nscd22:55:490
32121992410,13cyclictest0-21swapper/023:11:130
32121992410,12cyclictest0-21swapper/000:34:490
3212299232,7cyclictest91rcu_preempt22:47:351
3212299232,14cyclictest91rcu_preempt20:23:521
32122992310,4cyclictest0-21swapper/123:25:251
3212299230,2cyclictest91rcu_preempt21:05:591
3212299230,10cyclictest3249-21chrt23:39:571
32121992321,1cyclictest7001-21ssh22:21:020
32121992321,1cyclictest0-21swapper/022:10:080
32121992310,2cyclictest0-21swapper/023:03:330
812222210,3sleep10-21swapper/100:25:531
3212299222,2cyclictest91rcu_preempt22:51:081
32122992216,2cyclictest24-21ksoftirqd/123:05:081
32122992215,2cyclictest24-21ksoftirqd/120:30:061
32122992214,5cyclictest24-21ksoftirqd/123:23:431
3212299221,2cyclictest0-21swapper/121:00:061
32122992211,4cyclictest24-21ksoftirqd/120:35:051
32122992210,5cyclictest0-21swapper/121:55:051
3212299220,7cyclictest91rcu_preempt19:15:071
3212299220,21cyclictest16368-21ssh22:34:311
3212199229,8cyclictest0-21swapper/021:46:130
32121992220,1cyclictest636-21nscd21:28:070
32121992214,8cyclictest0-21swapper/021:18:560
3212199221,20cyclictest0-21swapper/023:34:350
32121992210,9cyclictest0-21swapper/000:20:270
32121992210,3cyclictest0-21swapper/020:20:100
3212299212,12cyclictest0-21swapper/120:05:121
32122992116,3cyclictest24-21ksoftirqd/122:55:081
32122992113,4cyclictest91rcu_preempt22:40:041
32122992113,2cyclictest24-21ksoftirqd/100:00:051
3212299211,1cyclictest91rcu_preempt21:44:521
32122992110,6cyclictest0-21swapper/119:09:551
3212199211,10cyclictest0-21swapper/019:50:010
32121992110,6cyclictest0-21swapper/022:28:030
32121992110,6cyclictest0-21swapper/000:38:020
32121992110,5cyclictest0-21swapper/019:45:040
3212299204,1cyclictest24-21ksoftirqd/100:34:061
32122992013,1cyclictest3653-21kworker/1:100:11:391
32122992010,7cyclictest0-21swapper/121:15:061
3212299200,2cyclictest91rcu_preempt19:59:221
3212199205,7cyclictest0-21swapper/021:20:050
3212199204,8cyclictest0-21swapper/023:15:040
3212199202,14cyclictest0-21swapper/023:41:240
32121992018,1cyclictest0-21swapper/023:35:470
32121992015,4cyclictest802-21apache223:23:460
32121992014,2cyclictest24865-21cstates20:15:040
32121992010,7cyclictest0-21swapper/022:52:400
32121992010,6cyclictest10431-21ssh23:48:410
32121992010,6cyclictest0-21swapper/021:10:050
32121992010,6cyclictest0-21swapper/020:00:030
32121992010,6cyclictest0-21swapper/000:06:250
32121992010,5cyclictest0-21swapper/000:25:030
32121992010,4cyclictest0-21swapper/023:25:050
3212199200,3cyclictest0-21swapper/019:20:110
3212199200,3cyclictest0-21swapper/019:20:110
3212299198,8cyclictest231ktimersoftd/121:10:041
3212299192,6cyclictest0-21swapper/119:30:111
3212199194,7cyclictest0-21swapper/019:15:090
3212199191,9cyclictest0-21swapper/021:05:050
32121991918,1cyclictest30574-21apache221:36:150
32121991910,6cyclictest28454-21ssh22:07:520
32121991910,5cyclictest0-21swapper/021:00:050
32121991910,4cyclictest100150irq/106-eth1-rx22:47:290
32121991910,4cyclictest0-21swapper/021:31:560
32121991910,3cyclictest100250irq/107-eth1-rx22:00:100
3149821910,0sleep10-21swapper/121:30:411
3212299184,8cyclictest0-21swapper/120:45:121
3212299183,8cyclictest0-21swapper/100:35:101
32122991810,5cyclictest0-21swapper/120:50:041
32122991810,4cyclictest100450irq/109-eth1-tx19:20:081
32122991810,4cyclictest100450irq/109-eth1-tx19:20:081
32122991810,3cyclictest0-21swapper/120:40:381
32122991810,2cyclictest0-21swapper/119:25:051
32122991810,0cyclictest0-21swapper/120:15:111
3212199185,7cyclictest1896-21munin-run20:39:520
3212199185,5cyclictest0-21swapper/020:50:090
3212199183,7cyclictest0-21swapper/021:57:000
3212199183,10cyclictest0-21swapper/019:35:030
32121991810,4cyclictest0-21swapper/000:13:500
32121991810,3cyclictest0-21swapper/019:30:030
3212199174,9cyclictest0-21swapper/020:30:080
3212199173,9cyclictest0-21swapper/020:45:060
3212199173,6cyclictest0-21swapper/020:10:080
3212199172,11cyclictest0-21swapper/019:55:110
32121991710,3cyclictest0-21swapper/020:25:030
3212199164,4cyclictest7813-21/usr/sbin/munin20:55:130
3212199161,7cyclictest0-21swapper/020:08:370
32121991610,3cyclictest0-21swapper/021:40:040
32122991510,2cyclictest0-21swapper/120:00:031
32121991514,0cyclictest0-21swapper/020:41:490
32121991510,3cyclictest0-21swapper/019:25:090
32121991412,1cyclictest11443-21cstates19:40:040
32121991310,0cyclictest0-21swapper/019:09:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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