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2026-06-11 - 18:55
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Thu Jun 11, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
296622720,1sleep10-21swapper/110:05:011
361927047,18sleep10-21swapper/107:04:531
374526649,8sleep00-21swapper/007:06:110
302702510,1sleep130272-21grep08:14:001
417099340,6cyclictest4973-21ls09:33:431
417099320,1cyclictest91rcu_preempt10:53:561
4170993130,0cyclictest24-21ksoftirqd/110:33:431
417099300,1cyclictest91rcu_preempt09:43:101
4169993010,13cyclictest0-21swapper/011:33:290
4169992919,9cyclictest14000-21apache210:11:140
4169992910,9cyclictest0-21swapper/010:23:030
416999290,28cyclictest0-21swapper/010:13:520
416999290,0cyclictest0-21swapper/007:28:120
4170992827,0cyclictest24-21ksoftirqd/111:33:421
4170992827,0cyclictest24-21ksoftirqd/108:23:591
4170992826,1cyclictest24-21ksoftirqd/111:08:531
4170992822,1cyclictest24-21ksoftirqd/109:58:241
417099278,3cyclictest91rcu_preempt12:35:201
4170992727,0cyclictest0-21swapper/110:39:161
4170992726,1cyclictest24-21ksoftirqd/112:28:361
4170992726,1cyclictest24-21ksoftirqd/108:00:021
4170992718,6cyclictest0-21swapper/109:37:491
4169992710,12cyclictest0-21swapper/010:25:390
4170992624,1cyclictest24-21ksoftirqd/111:04:011
4170992624,1cyclictest24-21ksoftirqd/111:04:011
4170992610,14cyclictest0-21swapper/111:16:461
4169992624,1cyclictest7-21ksoftirqd/009:48:420
4169992520,2cyclictest3593-21ssh12:24:030
4169992510,1cyclictest0-21swapper/010:56:190
417099244,13cyclictest91rcu_preempt11:52:381
417099241,2cyclictest91rcu_preempt12:09:211
4170992410,13cyclictest0-21swapper/111:48:131
4169992417,5cyclictest18047-21diskmemload10:06:020
4169992416,5cyclictest14009-21apache212:29:420
4169992416,3cyclictest12809-21ssh12:37:490
417099234,13cyclictest0-21swapper/107:34:001
417099233,3cyclictest91rcu_preempt09:44:001
417099232,3cyclictest91rcu_preempt10:02:351
4170992317,2cyclictest24-21ksoftirqd/112:18:581
4170992316,4cyclictest24-21ksoftirqd/107:38:541
4170992313,5cyclictest91rcu_preempt10:17:561
4170992312,7cyclictest19950-21sed11:19:021
417099231,21cyclictest100250irq/107-eth1-rx11:57:161
4170992311,2cyclictest91rcu_preempt09:00:061
4170992310,6cyclictest100250irq/107-eth1-rx11:25:561
4169992315,3cyclictest0-21swapper/011:01:180
416999231,2cyclictest0-21swapper/011:18:390
4169992310,8cyclictest0-21swapper/010:46:160
417099225,12cyclictest0-21swapper/107:19:001
4170992220,1cyclictest26585-21sh10:44:221
4170992216,4cyclictest14000-21apache211:43:401
4170992214,6cyclictest14009-21apache210:24:371
4170992214,0cyclictest100450irq/109-eth1-tx12:14:451
4170992212,4cyclictest0-21swapper/112:04:001
4170992210,7cyclictest231ktimersoftd/109:08:581
417099220,0cyclictest91rcu_preempt12:32:181
4169992216,4cyclictest0-21swapper/009:23:000
4169992214,5cyclictest14009-21apache210:01:530
4169992213,3cyclictest0-21swapper/011:03:560
4169992213,3cyclictest0-21swapper/011:03:560
4169992210,4cyclictest0-21swapper/011:18:570
4169992210,4cyclictest0-21swapper/008:24:280
416999220,15cyclictest27545-21df_inode12:13:540
417099215,11cyclictest0-21swapper/108:54:051
417099212,17cyclictest0-21swapper/110:48:551
4170992119,1cyclictest24-21ksoftirqd/107:13:431
4170992118,2cyclictest19594-21apache207:08:511
417099211,6cyclictest91rcu_preempt10:33:481
4170992114,2cyclictest24-21ksoftirqd/111:34:021
4170992113,2cyclictest24-21ksoftirqd/108:39:211
4170992110,0cyclictest0-21swapper/110:23:061
417099210,4cyclictest91rcu_preempt08:43:591
4169992121,0cyclictest0-21swapper/009:53:430
4169992113,5cyclictest4167-21cyclictest10:39:040
4169992113,2cyclictest8649-21cstates11:48:530
4169992110,6cyclictest0-21swapper/011:57:370
4169992110,5cyclictest0-21swapper/010:33:540
4169992110,3cyclictest0-21swapper/007:13:430
4169992110,10cyclictest0-21swapper/009:14:010
416999210,12cyclictest0-21swapper/010:48:530
1920722110,1sleep10-21swapper/112:02:531
417099206,12cyclictest0-21swapper/109:23:581
417099203,4cyclictest91rcu_preempt10:58:551
4170992018,2cyclictest744-21snmpd08:06:451
4170992015,1cyclictest24-21ksoftirqd/109:19:021
417099201,3cyclictest91rcu_preempt09:05:581
417099201,2cyclictest91rcu_preempt07:49:051
4170992011,8cyclictest0-21swapper/108:28:541
4170992011,2cyclictest24-21ksoftirqd/108:50:311
4170992010,3cyclictest0-21swapper/108:18:551
4170992010,1cyclictest0-21swapper/110:10:051
4170992010,1cyclictest0-21swapper/109:13:461
417099200,3cyclictest91rcu_preempt07:46:541
416999207,7cyclictest636-21nscd11:47:480
4169992019,1cyclictest14000-21apache211:40:030
416999201,16cyclictest0-21swapper/011:28:250
4169992010,5cyclictest0-21swapper/011:09:200
4169992010,1cyclictest0-21swapper/009:11:340
417099194,12cyclictest0-21swapper/107:53:541
417099190,1cyclictest91rcu_preempt08:08:571
416999198,10cyclictest0-21swapper/012:02:020
416999192,11cyclictest0-21swapper/012:18:590
4169991918,0cyclictest7-21ksoftirqd/012:04:020
4169991914,3cyclictest14009-21apache210:30:330
4169991910,8cyclictest0-21swapper/009:28:510
4169991910,5cyclictest0-21swapper/008:08:530
4169991910,5cyclictest0-21swapper/007:53:540
4169991910,3cyclictest0-21swapper/012:09:330
4169991910,3cyclictest0-21swapper/008:54:010
110072190,0sleep00-21swapper/008:48:580
417099184,6cyclictest0-21swapper/108:34:021
4170991814,3cyclictest16657-21/usr/sbin/munin09:49:011
417099181,12cyclictest0-21swapper/107:28:531
416999185,5cyclictest6646-21/usr/sbin/munin08:38:570
4169991818,0cyclictest744-21snmpd07:52:540
4169991811,4cyclictest100250irq/107-eth1-rx09:49:340
4169991810,6cyclictest0-21swapper/008:19:010
4169991810,5cyclictest0-21swapper/007:29:030
4169991810,4cyclictest0-21swapper/008:34:010
4169991810,3cyclictest0-21swapper/009:23:560
4169991810,2cyclictest0-21swapper/009:07:180
4169991810,2cyclictest0-21swapper/007:59:010
4169991810,2cyclictest0-21swapper/007:18:530
416999174,8cyclictest0-21swapper/008:58:560
416999171,8cyclictest623-21ssh11:38:120
4169991716,0cyclictest17084-21cat07:39:020
416999171,12cyclictest0-21swapper/007:13:580
416999170,2cyclictest0-21swapper/009:33:570
4170991610,4cyclictest0-21swapper/107:23:531
416999165,10cyclictest0-21swapper/009:38:530
4169991610,3cyclictest0-21swapper/008:28:540
4169991610,3cyclictest0-21swapper/008:13:530
4169991610,1cyclictest0-21swapper/008:43:550
416999153,6cyclictest0-21swapper/007:44:020
4169991510,2cyclictest0-21swapper/008:03:550
4169991510,1cyclictest0-21swapper/007:34:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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