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2026-06-13 - 15:07
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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 Sat Jun 13, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2293727260,8sleep10-21swapper/107:07:361
2281426956,8sleep00-21swapper/007:06:180
23225993936,1cyclictest24-21ksoftirqd/109:49:141
2322599355,1cyclictest91rcu_preempt07:38:541
23225993418,11cyclictest91rcu_preempt07:33:581
2322599328,9cyclictest24-21ksoftirqd/112:21:491
23225993230,1cyclictest24-21ksoftirqd/111:10:471
23225993129,1cyclictest24-21ksoftirqd/108:33:551
2322599308,3cyclictest91rcu_preempt11:59:281
23225993030,0cyclictest0-21swapper/112:14:431
23225993030,0cyclictest0-21swapper/109:16:481
23225992925,3cyclictest10380-21apache_accesses09:58:531
23225992924,2cyclictest24-21ksoftirqd/111:34:391
23225992921,2cyclictest24-21ksoftirqd/112:35:501
23224992926,3cyclictest0-21swapper/007:32:230
2322499290,26cyclictest0-21swapper/009:50:530
2322599289,10cyclictest231ktimersoftd/108:28:531
2322599288,9cyclictest231ktimersoftd/110:11:291
23225992827,0cyclictest24-21ksoftirqd/109:32:571
23225992824,3cyclictest19710-21df_inode11:38:551
23225992823,2cyclictest24-21ksoftirqd/109:35:221
23225992823,1cyclictest24-21ksoftirqd/109:10:511
23225992816,6cyclictest24-21ksoftirqd/110:23:551
23224992810,3cyclictest0-21swapper/009:54:150
2322499280,24cyclictest0-21swapper/010:03:400
23225992727,0cyclictest0-21swapper/110:22:271
23225992724,2cyclictest27776-21python11:48:591
23225992724,2cyclictest14420-21/usr/sbin/munin08:08:541
23225992723,3cyclictest20526-21apache_accesses12:23:521
23225992722,3cyclictest24-21ksoftirqd/111:06:021
23225992722,3cyclictest24-21ksoftirqd/111:06:021
23225992712,6cyclictest24-21ksoftirqd/110:04:051
23224992710,7cyclictest0-21swapper/007:13:550
2322499270,23cyclictest0-21swapper/011:56:250
2322599267,1cyclictest91rcu_preempt07:31:201
2322599264,1cyclictest91rcu_preempt10:35:331
23225992624,1cyclictest10344-21apache_volume07:58:551
23225992623,2cyclictest8841-21timerwakeupswit10:39:031
23225992623,2cyclictest29272-21fschecks_count07:23:561
23225992623,2cyclictest27908-21tune2fs08:43:561
23225992623,2cyclictest12273-21df11:28:531
23225992622,3cyclictest231ktimersoftd/107:13:581
23225992620,3cyclictest24-21ksoftirqd/109:56:451
23225992619,4cyclictest231ktimersoftd/108:18:581
23225992612,4cyclictest231ktimersoftd/108:23:571
23225992611,1cyclictest24-21ksoftirqd/110:59:171
23224992610,3cyclictest0-21swapper/011:35:370
23224992610,10cyclictest0-21swapper/011:06:400
23224992610,10cyclictest0-21swapper/011:06:400
23225992522,2cyclictest5324-21/usr/sbin/munin11:18:561
23225992522,2cyclictest4691-21diskmemload09:24:461
23225992522,2cyclictest32698-21/usr/sbin/munin08:54:031
23225992522,2cyclictest24470-21diskstats12:28:541
23225992522,2cyclictest1350-21/usr/sbin/munin11:13:551
23225992522,2cyclictest10231-21ssh11:24:591
23225992522,2cyclictest0-21swapper/112:06:071
23225992521,3cyclictest9626-21fschecks_time12:08:541
23225992521,3cyclictest14929-21ssh10:48:481
23225992521,3cyclictest12455-21/usr/sbin/munin10:44:021
23225992521,2cyclictest24-21ksoftirqd/109:06:491
23224992521,3cyclictest626-21apache209:11:390
23224992510,5cyclictest0-21swapper/009:36:080
23224992510,4cyclictest0-21swapper/011:41:080
2322599249,1cyclictest91rcu_preempt11:55:461
23225992422,2cyclictest4691-21diskmemload10:30:411
23225992422,1cyclictest23595-21hddtemp_smartct07:08:551
23225992421,2cyclictest29675-21cat08:48:521
23225992421,2cyclictest16667-21latency08:13:571
23225992421,2cyclictest1022-21apache_processe08:58:531
23225992421,2cyclictest0-21swapper/109:44:251
23225992420,3cyclictest7037-21interrupts07:48:571
23225992420,3cyclictest4691-21diskmemload09:21:461
23225992420,3cyclictest21662-21/usr/sbin/munin10:13:541
23225992410,13cyclictest27756-21missed_timers07:18:581
23224992418,2cyclictest0-21swapper/009:43:020
23224992411,12cyclictest17566-21kworker/u4:110:29:320
23225992320,3cyclictest4691-21diskmemload09:42:441
23225992320,2cyclictest626-21apache210:54:321
23225992310,6cyclictest0-21swapper/111:43:591
23224992323,0cyclictest0-21swapper/010:59:570
23224992310,4cyclictest0-21swapper/012:25:000
23224992310,2cyclictest0-21swapper/012:36:550
23225992220,2cyclictest0-21swapper/108:39:231
23225992213,8cyclictest0-21swapper/107:43:551
23225992210,4cyclictest0-21swapper/108:03:531
23224992222,0cyclictest0-21swapper/011:45:390
23224992218,3cyclictest626-21apache211:17:030
23224992216,5cyclictest613-21apache210:57:290
23224992214,6cyclictest626-21apache210:48:410
23224992210,3cyclictest0-21swapper/011:58:530
23224992210,2cyclictest0-21swapper/007:33:430
23224992210,0cyclictest0-21swapper/009:21:210
23225992118,2cyclictest8809-21/usr/sbin/munin07:53:551
2322499216,9cyclictest0-21swapper/007:44:030
2322499214,16cyclictest0-21swapper/010:15:290
2322499212,9cyclictest0-21swapper/011:31:040
2322499212,15cyclictest0-21swapper/007:38:540
23224992112,1cyclictest0-21swapper/010:09:010
23224992110,5cyclictest0-21swapper/011:12:250
2322499203,9cyclictest0-21swapper/008:23:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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