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2026-05-20 - 08:43
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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 highest latencies:
System rackcslot2.osadl.org (updated Wed May 20, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1273322150,2sleep10-21swapper/119:04:071
1402926754,8sleep00-21swapper/019:04:510
14599993121,7cyclictest28231-21diskmemload21:26:301
14598993131,0cyclictest0-21swapper/023:06:100
14599993030,0cyclictest0-21swapper/121:43:011
14599993018,4cyclictest231ktimersoftd/121:19:061
1459999284,2cyclictest91rcu_preempt00:21:201
14599992826,2cyclictest24-21ksoftirqd/123:14:161
1459999280,22cyclictest0-21swapper/122:12:471
14598992828,0cyclictest0-21swapper/000:15:310
14599992725,1cyclictest24-21ksoftirqd/119:19:061
1459999271,8cyclictest24-21ksoftirqd/122:21:201
14599992716,3cyclictest0-21swapper/100:25:371
1459999262,6cyclictest91rcu_preempt21:29:521
14599992625,1cyclictest0-21swapper/123:06:411
14599992625,0cyclictest24-21ksoftirqd/121:59:151
14599992624,1cyclictest24-21ksoftirqd/119:54:151
14598992610,6cyclictest0-21swapper/000:30:490
14598992610,13cyclictest0-21swapper/021:19:350
1459899260,1cyclictest31453-21/usr/sbin/munin21:54:100
1459999256,3cyclictest91rcu_preempt20:59:091
14599992523,1cyclictest24-21ksoftirqd/120:24:101
14599992522,1cyclictest24-21ksoftirqd/123:26:321
1459999250,2cyclictest91rcu_preempt21:54:561
14599992422,1cyclictest24-21ksoftirqd/123:59:581
14599992422,1cyclictest24-21ksoftirqd/100:14:081
14599992415,6cyclictest24-21ksoftirqd/121:18:291
14599992415,4cyclictest24-21ksoftirqd/123:40:541
14599992410,9cyclictest0-21swapper/100:09:121
14599992410,6cyclictest0-21swapper/119:44:051
1459999240,2cyclictest0-21swapper/120:03:411
14598992423,0cyclictest0-21swapper/022:50:560
14598992420,3cyclictest27529-21apache222:01:190
1459899241,16cyclictest0-21swapper/021:29:090
14598992410,13cyclictest0-21swapper/022:11:060
1459899240,0cyclictest0-21swapper/023:30:210
1459999232,3cyclictest91rcu_preempt22:54:281
14599992323,0cyclictest24-21ksoftirqd/122:25:031
1459999232,1cyclictest91rcu_preempt23:31:071
14599992316,4cyclictest24-21ksoftirqd/123:02:251
14599992316,2cyclictest0-21swapper/122:16:051
14599992315,6cyclictest100150irq/106-eth1-rx23:45:421
14599992311,10cyclictest27529-21apache200:31:341
14599992310,7cyclictest0-21swapper/122:04:071
14599992310,3cyclictest0-21swapper/123:34:451
1459899235,11cyclictest28231-21diskmemload23:09:100
14598992321,1cyclictest13331-21sh00:24:110
14598992312,8cyclictest27529-21apache221:17:310
1459999223,3cyclictest91rcu_preempt23:12:141
14599992221,1cyclictest24-21ksoftirqd/122:40:581
14599992219,1cyclictest16541-21apache_accesses19:14:051
1459999221,6cyclictest0-21swapper/122:29:051
1459999221,13cyclictest0-21swapper/123:54:041
1459899225,13cyclictest0-21swapper/000:19:150
1459899224,12cyclictest0-21swapper/021:43:170
14598992216,4cyclictest27555-21apache223:44:400
14598992211,8cyclictest28231-21diskmemload22:33:160
14598992210,7cyclictest0-21swapper/022:39:120
14598992210,5cyclictest0-21swapper/022:14:110
1459899220,20cyclictest0-21swapper/019:41:150
2345522110,0sleep10-21swapper/123:52:381
1574822110,0sleep00-21swapper/023:42:230
1459999217,9cyclictest0-21swapper/121:04:051
14599992121,0cyclictest0-21swapper/100:38:211
14599992120,1cyclictest24-21ksoftirqd/120:14:061
14599992117,3cyclictest744-21snmpd23:19:291
14599992116,0cyclictest0-21swapper/122:48:481
14599992115,4cyclictest24-21ksoftirqd/120:19:091
1459999211,12cyclictest29502-21grep22:34:101
14599992110,3cyclictest0-21swapper/120:29:091
14599992110,3cyclictest0-21swapper/100:03:591
1459999210,3cyclictest91rcu_preempt20:34:121
1459999210,1cyclictest91rcu_preempt21:44:111
1459899218,5cyclictest636-21nscd21:34:500
14598992117,2cyclictest802-21apache200:13:050
14598992113,5cyclictest636-21nscd20:23:540
14598992113,3cyclictest16665-21sh22:59:330
14598992111,5cyclictest0-21swapper/000:04:130
1459899210,20cyclictest20387-21apache_accesses19:24:040
1459899210,15cyclictest14250-21kworker/0:222:21:360
1459999203,7cyclictest22566-21apache_accesses20:54:041
1459999201,3cyclictest91rcu_preempt22:49:011
14599992010,3cyclictest24-21ksoftirqd/121:35:411
14599992010,3cyclictest0-21swapper/121:09:051
1459899207,11cyclictest0-21swapper/020:49:030
14598992015,3cyclictest27529-21apache222:04:000
14598992014,3cyclictest0-21swapper/023:28:290
14598992010,9cyclictest0-21swapper/020:55:190
14598992010,6cyclictest0-21swapper/019:14:070
14598992010,4cyclictest0-21swapper/023:35:260
1459999193,7cyclictest17214-21/usr/sbin/munin20:39:071
1459999192,10cyclictest0-21swapper/120:04:061
14599991918,1cyclictest0-21swapper/120:10:371
14599991912,5cyclictest100150irq/106-eth1-rx21:48:571
14599991912,4cyclictest0-21swapper/119:39:091
14599991910,2cyclictest24-21ksoftirqd/119:24:101
14599991910,2cyclictest0-21swapper/119:49:101
1459899195,7cyclictest0-21swapper/020:59:100
14598991917,1cyclictest81ktimersoftd/019:30:170
14598991917,1cyclictest27555-21apache219:09:080
14598991915,3cyclictest27529-21apache223:53:590
1459899191,14cyclictest0-21swapper/021:50:330
14598991910,4cyclictest0-21swapper/021:13:350
14598991910,3cyclictest0-21swapper/022:54:160
14598991910,3cyclictest0-21swapper/021:04:240
14598991910,1cyclictest0-21swapper/019:54:060
1459899190,12cyclictest0-21swapper/023:19:170
14599991816,1cyclictest24-21ksoftirqd/119:30:511
14599991810,4cyclictest0-21swapper/120:44:101
1459899189,6cyclictest27555-21apache220:45:230
1459899184,7cyclictest0-21swapper/022:34:050
1459899182,8cyclictest0-21swapper/019:59:110
14598991816,2cyclictest0-21swapper/000:37:150
14598991814,3cyclictest27659-21munin-node21:44:150
14598991814,3cyclictest27555-21apache223:52:120
1459899181,1cyclictest7722-21/usr/sbin/munin21:24:110
14598991811,5cyclictest100150irq/106-eth1-rx22:47:030
14598991810,5cyclictest0-21swapper/019:34:060
14598991810,2cyclictest0-21swapper/020:29:120
14599991712,4cyclictest24-21ksoftirqd/119:09:091
1459899174,5cyclictest28618-21ssh23:59:110
1459899173,8cyclictest0-21swapper/020:09:070
14598991710,3cyclictest0-21swapper/023:14:110
14598991710,3cyclictest0-21swapper/019:19:040
14599991610,4cyclictest0-21swapper/120:49:071
1459899166,4cyclictest22392-21ls22:24:140
14598991610,2cyclictest0-21swapper/020:36:550
14598991610,1cyclictest0-21swapper/020:14:050
14598991610,1cyclictest0-21swapper/020:04:090
14599991512,2cyclictest24575-21/usr/sbin/munin19:34:081
1459899151,7cyclictest28123-21apache_volume19:44:060
14598991510,2cyclictest0-21swapper/020:28:430
1459899143,4cyclictest17306-21/usr/sbin/munin20:39:080
14598991410,3cyclictest0-21swapper/019:49:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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