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2026-06-20 - 06:37
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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 Sat Jun 20, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
91642710,0sleep00-21swapper/023:48:460
544527051,15sleep00-21swapper/019:05:090
560226857,7sleep10-21swapper/119:06:461
36892660,0sleep10-21swapper/122:56:491
5961993939,0cyclictest0-21swapper/122:16:171
5960993517,1cyclictest91rcu_preempt23:17:010
596099344,6cyclictest7-21ksoftirqd/022:14:140
596099329,5cyclictest7-21ksoftirqd/021:40:410
5960993230,2cyclictest7-21ksoftirqd/023:03:540
5960993215,6cyclictest27158-21apache_processe20:03:500
596099316,4cyclictest91rcu_preempt22:36:170
5960993130,0cyclictest7-21ksoftirqd/000:12:300
5960993121,5cyclictest13216-21diskstats23:53:520
596199300,29cyclictest0-21swapper/122:43:051
596099307,2cyclictest91rcu_preempt23:21:360
5960992927,1cyclictest7-21ksoftirqd/023:09:150
5960992921,5cyclictest81ktimersoftd/022:23:500
5961992813,15cyclictest0-21swapper/119:18:371
5961992810,6cyclictest0-21swapper/122:49:581
596099285,1cyclictest5147-21sh23:43:050
5960992810,4cyclictest91rcu_preempt22:07:080
5960992810,1cyclictest0-21swapper/021:14:040
5960992810,18cyclictest0-21swapper/021:11:590
596199277,19cyclictest0-21swapper/123:45:211
5961992722,4cyclictest744-21snmpd23:00:251
596199271,25cyclictest0-21swapper/121:38:541
5961992710,4cyclictest0-21swapper/122:09:371
596199270,8cyclictest0-21swapper/121:24:421
596199270,0cyclictest0-21swapper/123:27:171
596099274,2cyclictest91rcu_preempt20:12:230
596099273,4cyclictest91rcu_preempt00:24:250
5960992723,3cyclictest13667-21apache_accesses19:28:490
5960992722,4cyclictest19548-21diskmemload00:19:220
5960992721,1cyclictest7-21ksoftirqd/019:18:550
596199260,26cyclictest0-21swapper/120:42:571
596199260,25cyclictest20795-21kworker/1:019:30:031
596199260,0cyclictest20795-21kworker/1:019:26:311
5960992624,1cyclictest7-21ksoftirqd/023:58:570
5960992624,1cyclictest121rcuc/000:07:340
5960992623,2cyclictest31749-21ntp_states20:13:570
5960992623,2cyclictest19548-21diskmemload23:28:570
5960992623,2cyclictest14718-21/usr/sbin/munin21:43:560
596099262,1cyclictest91rcu_preempt22:49:570
5960992615,5cyclictest81ktimersoftd/022:28:490
5960992610,7cyclictest0-21swapper/021:58:300
5960992610,10cyclictest81ktimersoftd/019:53:500
596199256,18cyclictest0-21swapper/123:52:091
5961992516,6cyclictest24292-21sh21:57:551
5961992510,7cyclictest0-21swapper/121:19:471
5961992510,11cyclictest0-21swapper/100:26:171
596099258,10cyclictest91rcu_preempt21:33:170
596099253,2cyclictest91rcu_preempt22:11:270
596099253,2cyclictest7-21ksoftirqd/022:22:130
5960992523,1cyclictest8980-21ntp_states20:38:560
5960992522,2cyclictest7-21ksoftirqd/000:37:350
5960992522,2cyclictest26543-21ssh23:28:340
5960992521,3cyclictest22373-21ssh22:38:450
5961992420,3cyclictest25554-21apache222:03:441
5961992416,6cyclictest25528-21apache200:03:491
5961992412,5cyclictest0-21swapper/119:38:521
5961992410,9cyclictest0-21swapper/120:33:501
596099244,0cyclictest91rcu_preempt19:16:010
5960992422,2cyclictest19548-21diskmemload23:44:410
5960992422,2cyclictest19548-21diskmemload21:26:320
5960992422,1cyclictest81ktimersoftd/021:36:580
5960992422,1cyclictest25875-21memory19:58:540
5960992422,1cyclictest11968-21df_inode19:23:510
596099242,21cyclictest0-21swapper/020:18:520
5960992421,2cyclictest31510-21/usr/sbin/munin23:33:580
5960992421,2cyclictest28085-21hddtemp_smartct21:18:510
5960992421,2cyclictest12800-21/usr/sbin/munin20:48:540
5960992416,7cyclictest17714-21apache_processe21:48:500
5960992410,9cyclictest0-21swapper/019:08:580
1791622410,0sleep10-21swapper/122:32:361
5961992319,3cyclictest25704-21if_eth019:58:531
5961992315,4cyclictest25554-21apache200:33:311
5961992310,5cyclictest0-21swapper/100:11:361
596199230,5cyclictest0-21swapper/120:08:541
596099234,15cyclictest26245-21diskstats22:43:510
5960992321,1cyclictest1113-21apache_volume22:53:500
5960992320,2cyclictest4989-21memory20:28:550
5960992320,2cyclictest14172-21/usr/sbin/munin20:53:520
5960992316,4cyclictest81ktimersoftd/022:59:240
5960992315,7cyclictest6817-21irqstats20:33:540
596199225,5cyclictest0-21swapper/123:28:491
596199225,11cyclictest0-21swapper/120:58:551
5961992222,0cyclictest0-21swapper/120:03:581
5961992219,2cyclictest25554-21apache219:48:491
5961992217,1cyclictest0-21swapper/121:32:571
5961992212,7cyclictest19548-21diskmemload22:19:091
5961992210,8cyclictest0-21swapper/100:13:521
5961992210,3cyclictest0-21swapper/122:27:031
5961992210,11cyclictest18797-21kworker/1:023:18:431
5960992219,2cyclictest5117-21hddtemp_smartct00:28:510
5960992219,2cyclictest16106-21diskstats20:58:520
5960992217,4cyclictest0-21swapper/020:23:580
5960992215,6cyclictest28164-21ssh00:14:400
5960992211,5cyclictest81ktimersoftd/019:43:490
596199217,9cyclictest0-21swapper/100:03:391
596199215,11cyclictest0-21swapper/121:58:581
5961992120,1cyclictest25528-21apache221:10:061
5961992119,1cyclictest0-21swapper/123:07:471
5961992111,6cyclictest100150irq/106-eth1-rx00:37:041
596199211,10cyclictest0-21swapper/120:48:481
596199210,0cyclictest3125-21kworker/1:220:30:591
5960992119,1cyclictest21341-21apache_processe19:48:480
5960992118,2cyclictest15976-21sort19:33:510
5960992114,4cyclictest24922-21apache_volume21:58:490
596199202,14cyclictest0-21swapper/121:43:541
5961992010,2cyclictest0-21swapper/121:35:251
5961992010,1cyclictest0-21swapper/122:43:501
5960992013,5cyclictest18483-21needreboot21:03:560
596199198,8cyclictest12991-21apache_processe23:53:501
596199194,10cyclictest0-21swapper/120:43:511
596199191,7cyclictest29784-21/usr/sbin/munin00:18:501
5961991915,4cyclictest0-21swapper/121:49:531
5961991910,5cyclictest0-21swapper/121:13:501
5961991910,5cyclictest0-21swapper/119:08:511
5961991910,4cyclictest0-21swapper/123:38:501
5961991910,4cyclictest0-21swapper/123:08:481
5961991910,3cyclictest0-21swapper/121:04:281
596099199,9cyclictest0-21swapper/019:40:590
596099195,5cyclictest0-21swapper/020:43:510
1548821910,0sleep10-21swapper/123:13:391
596199186,9cyclictest0-21swapper/122:33:541
596199186,6cyclictest0-21swapper/120:22:381
5961991810,4cyclictest0-21swapper/119:43:491
596199177,9cyclictest0-21swapper/123:33:421
596199175,4cyclictest0-21swapper/119:18:541
596199171,8cyclictest0-21swapper/119:53:511
5961991710,7cyclictest0-21swapper/120:28:051
5961991710,4cyclictest0-21swapper/120:53:521
5961991710,3cyclictest0-21swapper/120:18:391
5961991411,2cyclictest20795-21kworker/1:019:37:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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