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2026-06-09 - 01:28
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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 Mon Jun 08, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
404727361,7sleep00-21swapper/007:04:270
159192670,1sleep015917-21seq08:59:030
416126654,8sleep10-21swapper/107:05:391
4638993710,3cyclictest0-21swapper/112:07:491
463899343,5cyclictest91rcu_preempt10:10:161
4638993413,5cyclictest91rcu_preempt09:38:111
4638993211,3cyclictest91rcu_preempt12:01:091
463899314,4cyclictest91rcu_preempt09:28:401
4638993120,3cyclictest91rcu_preempt10:51:041
4638993110,18cyclictest32572-21kworker/u4:110:06:371
463899310,1cyclictest0-21swapper/111:30:311
4637993118,9cyclictest0-21swapper/008:17:580
463899308,11cyclictest91rcu_preempt12:19:371
4638993021,7cyclictest14468-21apache212:36:081
463899298,1cyclictest91rcu_preempt09:59:031
463899296,3cyclictest91rcu_preempt12:17:221
463899295,3cyclictest91rcu_preempt10:44:521
4638992927,2cyclictest0-21swapper/112:29:021
463899287,2cyclictest91rcu_preempt11:16:331
463899285,3cyclictest91rcu_preempt12:24:581
463899283,4cyclictest91rcu_preempt10:33:581
463899283,1cyclictest91rcu_preempt11:57:051
4638992825,2cyclictest231ktimersoftd/108:58:571
463799280,13cyclictest0-21swapper/007:33:450
463899278,18cyclictest24-21ksoftirqd/109:51:251
463899277,5cyclictest24-21ksoftirqd/110:54:311
4638992725,1cyclictest231ktimersoftd/107:13:561
4638992724,3cyclictest0-21swapper/111:04:021
4638992723,3cyclictest10122-21/usr/sbin/munin09:39:001
4638992712,6cyclictest91rcu_preempt09:32:211
4638992711,5cyclictest30691-21ntp_states08:14:011
4638992710,4cyclictest24-21ksoftirqd/111:10:381
4637992723,1cyclictest19106-21kworker/u4:211:20:590
4637992711,4cyclictest18850-21ssh10:34:000
4637992710,2cyclictest0-21swapper/009:48:290
463899269,2cyclictest91rcu_preempt08:58:091
463899263,9cyclictest24-21ksoftirqd/110:21:501
4638992625,0cyclictest24-21ksoftirqd/109:18:591
4638992623,3cyclictest0-21swapper/110:38:561
4638992521,3cyclictest11509-21/usr/sbin/munin07:24:051
4638992519,3cyclictest14484-21apache211:28:391
4638992517,4cyclictest24-21ksoftirqd/111:43:531
463899250,2cyclictest0-21swapper/111:19:241
463799251,21cyclictest0-21swapper/012:20:180
4637992510,0cyclictest0-21swapper/008:23:580
463899246,3cyclictest91rcu_preempt12:11:161
4638992421,2cyclictest16428-21ls07:38:451
4638992421,2cyclictest11336-21wget08:48:591
4638992421,2cyclictest0-21swapper/107:59:031
4638992420,3cyclictest5212-21apache_volume08:33:561
4638992420,3cyclictest18029-21ssh10:33:441
4638992416,2cyclictest24-21ksoftirqd/109:12:061
4638992413,6cyclictest24-21ksoftirqd/109:48:341
4638992412,9cyclictest0-21swapper/107:18:581
4637992410,7cyclictest0-21swapper/010:14:010
4637992410,1cyclictest0-21swapper/011:05:500
463899235,7cyclictest24-21ksoftirqd/109:56:071
4638992320,2cyclictest18548-21diskmemload09:17:211
4638992320,2cyclictest18548-21diskmemload09:17:211
4638992319,2cyclictest14468-21apache208:42:181
4638992318,5cyclictest0-21swapper/108:09:031
4638992318,4cyclictest0-21swapper/110:13:571
4638992317,6cyclictest0-21swapper/109:03:451
4638992311,7cyclictest231ktimersoftd/111:48:541
463799235,12cyclictest0-21swapper/008:18:560
463799233,13cyclictest0-21swapper/009:48:590
463799232,9cyclictest0-21swapper/007:48:540
4637992319,4cyclictest802-21apache209:18:530
4637992311,5cyclictest0-21swapper/010:03:300
4637992310,9cyclictest0-21swapper/012:14:110
4637992310,6cyclictest0-21swapper/011:57:280
4637992310,2cyclictest0-21swapper/012:03:290
463799230,2cyclictest0-21swapper/009:27:550
463799230,19cyclictest29709-21ssh10:04:280
4638992219,2cyclictest1928-21grep08:24:001
4638992219,2cyclictest16513-21apache_processe07:38:561
4638992214,7cyclictest231ktimersoftd/107:29:041
4638992213,8cyclictest5544-21sensors_temp10:59:051
4638992210,1cyclictest0-21swapper/110:23:561
463799223,7cyclictest0-21swapper/011:27:370
4637992220,1cyclictest0-21swapper/011:01:480
4637992215,6cyclictest0-21swapper/008:06:580
4637992214,5cyclictest636-21nscd12:36:460
4637992211,8cyclictest0-21swapper/009:30:120
4637992210,4cyclictest0-21swapper/010:38:530
4637992210,0cyclictest0-21swapper/009:42:530
463799220,16cyclictest0-21swapper/010:09:400
4638992119,2cyclictest956-21ssh11:36:421
4638992116,5cyclictest9058-21apache_volume08:43:551
4638992115,4cyclictest744-21snmpd07:13:261
4637992115,3cyclictest1199-21runrttasks11:42:410
4637992110,6cyclictest0-21swapper/008:43:540
4637992110,5cyclictest21817-21ssh12:04:050
4637992110,4cyclictest0-21swapper/011:29:460
463899202,8cyclictest0-21swapper/107:49:011
4638992015,4cyclictest32396-21irqstats08:18:591
4638992014,5cyclictest2204-21apache_accesses11:38:551
4638992010,6cyclictest0-21swapper/108:28:551
463899200,2cyclictest19106-21grep07:43:591
463799208,10cyclictest0-21swapper/012:31:460
463799205,7cyclictest0-21swapper/007:44:040
463799203,8cyclictest0-21swapper/008:53:560
4637992018,1cyclictest0-21swapper/010:24:030
4637992011,4cyclictest100250irq/107-eth1-rx11:15:410
4637992010,4cyclictest0-21swapper/009:34:020
4637992010,2cyclictest0-21swapper/011:44:380
4637992010,0cyclictest0-21swapper/012:27:390
463799200,18cyclictest18548-21diskmemload09:10:000
463899195,10cyclictest0-21swapper/107:53:561
4638991917,2cyclictest0-21swapper/108:07:171
463799199,3cyclictest0-21swapper/009:14:000
463799199,3cyclictest0-21swapper/009:14:000
463799195,6cyclictest18548-21diskmemload11:48:560
4637991910,5cyclictest100150irq/106-eth1-rx08:29:040
4637991910,5cyclictest0-21swapper/010:53:330
4637991910,4cyclictest0-21swapper/007:27:280
4637991910,3cyclictest0-21swapper/007:09:010
4637991910,2cyclictest0-21swapper/011:34:020
4637991910,0cyclictest0-21swapper/008:43:030
463799190,18cyclictest0-21swapper/009:08:110
463799184,8cyclictest0-21swapper/007:19:010
463799182,8cyclictest0-21swapper/010:53:450
4637991816,1cyclictest22333-21taskset09:54:570
4637991815,2cyclictest81ktimersoftd/007:29:020
463799181,4cyclictest0-21swapper/010:31:100
4637991810,5cyclictest0-21swapper/010:43:560
4637991810,3cyclictest0-21swapper/010:19:000
4637991810,2cyclictest0-21swapper/007:38:450
463799180,1cyclictest0-21swapper/011:09:510
4637991710,3cyclictest0-21swapper/008:34:020
4637991710,0cyclictest0-21swapper/012:09:410
463799170,10cyclictest0-21swapper/007:17:560
4637991610,4cyclictest0-21swapper/008:02:350
463799160,10cyclictest0-21swapper/008:48:590
463799150,10cyclictest0-21swapper/008:08:540
4637991410,2cyclictest0-21swapper/007:54:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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