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2026-06-22 - 01:51
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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 Sun Jun 21, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
938327650,8sleep00-21swapper/007:06:330
917426947,17sleep10-21swapper/107:04:211
146462650,0sleep014644-21seq12:33:550
186312640,0sleep10-21swapper/111:54:421
976599344,4cyclictest91rcu_preempt12:04:001
9765993317,5cyclictest24-21ksoftirqd/110:00:021
9765993311,10cyclictest91rcu_preempt11:01:471
9764993310,19cyclictest0-21swapper/011:24:200
976599324,3cyclictest91rcu_preempt09:35:511
976599324,2cyclictest91rcu_preempt11:33:521
976599324,0cyclictest91rcu_preempt11:05:391
9765993224,2cyclictest24-21ksoftirqd/107:23:381
9765993113,8cyclictest24-21ksoftirqd/110:56:571
9765993110,1cyclictest0-21swapper/110:23:531
976599309,2cyclictest91rcu_preempt12:09:481
976599307,2cyclictest91rcu_preempt08:30:481
9765993028,1cyclictest24-21ksoftirqd/110:38:561
9765993023,5cyclictest24-21ksoftirqd/109:23:561
9765993015,12cyclictest24-21ksoftirqd/110:32:531
976599299,3cyclictest91rcu_preempt09:50:311
976599296,2cyclictest91rcu_preempt08:23:511
9765992926,2cyclictest24-21ksoftirqd/112:28:581
9765992920,5cyclictest91rcu_preempt11:59:401
9765992920,3cyclictest24-21ksoftirqd/111:49:581
9765992910,16cyclictest0-21swapper/110:12:561
9765992910,0cyclictest0-21swapper/108:19:251
9764992926,2cyclictest361-21ssh10:47:020
9764992910,2cyclictest0-21swapper/010:39:580
976499290,25cyclictest0-21swapper/009:08:380
9765992824,3cyclictest0-21swapper/110:49:361
9765992824,2cyclictest24-21ksoftirqd/111:43:551
9764992810,9cyclictest0-21swapper/011:14:310
976599273,2cyclictest91rcu_preempt09:43:141
9765992725,1cyclictest231ktimersoftd/112:26:121
9765992723,4cyclictest24-21ksoftirqd/109:45:401
9765992716,5cyclictest91rcu_preempt11:15:341
9765992623,2cyclictest13939-21df12:33:491
9765992622,3cyclictest27876-21if_err_eth307:53:511
9765992622,3cyclictest14552-21fschecks_time08:43:501
9764992610,6cyclictest0-21swapper/010:26:300
9764992610,15cyclictest0-21swapper/011:36:410
976599258,2cyclictest91rcu_preempt11:43:161
9765992522,2cyclictest23515-21grep10:33:541
9765992510,12cyclictest0-21swapper/109:16:491
976599250,22cyclictest31338-21cat08:03:511
976599250,22cyclictest31338-21cat08:03:511
976499258,16cyclictest0-21swapper/007:15:270
9764992524,0cyclictest0-21swapper/012:30:450
9764992510,13cyclictest0-21swapper/009:53:480
976599248,5cyclictest231ktimersoftd/110:08:141
9765992422,2cyclictest0-21swapper/109:55:041
9765992422,2cyclictest0-21swapper/108:48:581
9765992422,1cyclictest15614-21apache_volume07:23:481
9765992421,3cyclictest0-21swapper/110:21:041
9765992421,2cyclictest20828-21/usr/sbin/munin07:33:581
9765992418,0cyclictest24-21ksoftirqd/107:58:521
9765992413,7cyclictest3757-21switchtime08:13:581
9765992413,4cyclictest231ktimersoftd/111:18:501
976499247,16cyclictest0-21swapper/007:11:250
9765992321,2cyclictest0-21swapper/111:11:491
9765992321,1cyclictest1429-21memory08:08:531
9765992320,2cyclictest23723-21diskmemload12:22:001
9765992320,2cyclictest0-21swapper/110:45:531
9765992320,2cyclictest0-21swapper/110:15:081
9765992310,7cyclictest0-21swapper/112:13:521
976499237,6cyclictest0-21swapper/008:33:530
976499237,13cyclictest0-21swapper/007:28:510
9764992323,0cyclictest0-21swapper/010:18:530
9764992323,0cyclictest0-21swapper/008:31:010
9764992321,2cyclictest81ktimersoftd/008:03:030
9765992221,1cyclictest19666-21apache209:22:121
9765992219,2cyclictest25733-21diskstats07:48:521
9765992218,3cyclictest0-21swapper/109:12:401
9765992218,3cyclictest0-21swapper/107:08:561
9765992210,10cyclictest1106-21ssh11:32:021
9764992219,3cyclictest19644-21apache211:30:570
976499221,5cyclictest100250irq/107-eth1-rx11:20:210
9764992210,7cyclictest0-21swapper/012:20:470
976499220,21cyclictest0-21swapper/011:42:530
976599219,3cyclictest12323-21apache_volume08:38:491
976599214,11cyclictest0-21swapper/107:43:471
976599212,10cyclictest0-21swapper/109:03:511
9765992118,2cyclictest23723-21diskmemload09:33:011
9765992118,2cyclictest17762-21diskstats07:28:511
976499214,4cyclictest0-21swapper/009:45:280
976499212,3cyclictest0-21swapper/009:09:490
976499212,11cyclictest0-21swapper/007:26:000
9764992116,4cyclictest19644-21apache211:09:550
9764992116,2cyclictest19644-21apache209:40:070
9764992115,5cyclictest19644-21apache210:14:500
9764992114,7cyclictest0-21swapper/008:45:430
9764992110,6cyclictest0-21swapper/008:13:560
9764992110,5cyclictest0-21swapper/009:33:010
9764992110,4cyclictest0-21swapper/012:13:490
9764992110,4cyclictest0-21swapper/012:11:150
9764992110,4cyclictest0-21swapper/009:48:400
9764992110,4cyclictest0-21swapper/007:38:450
9764992110,3cyclictest0-21swapper/011:53:470
9764992110,3cyclictest0-21swapper/009:25:520
9764992110,1cyclictest0-21swapper/010:00:140
976499210,9cyclictest0-21swapper/011:58:570
976599206,2cyclictest91rcu_preempt08:54:011
9765992017,2cyclictest11343-21mailstats08:33:581
9765992014,4cyclictest231ktimersoftd/107:38:511
9764992019,0cyclictest7-21ksoftirqd/007:23:380
9764992010,9cyclictest0-21swapper/010:36:510
9764992010,5cyclictest0-21swapper/008:38:490
9764992010,3cyclictest0-21swapper/009:13:530
9764992010,3cyclictest0-21swapper/007:33:590
9764992010,1cyclictest0-21swapper/009:21:350
976499200,2cyclictest0-21swapper/010:59:170
1449422010,0sleep00-21swapper/011:05:220
976599192,0cyclictest91rcu_preempt11:26:301
9765991917,1cyclictest24-21ksoftirqd/109:00:241
976499195,6cyclictest613-21ssh10:03:520
976499194,9cyclictest0-21swapper/008:53:530
976499192,16cyclictest23723-21diskmemload10:49:450
976499192,12cyclictest26638-21ls07:48:590
9764991917,1cyclictest0-21swapper/012:26:550
9764991914,2cyclictest81ktimersoftd/007:54:440
9764991910,5cyclictest0-21swapper/011:44:510
9764991910,4cyclictest0-21swapper/010:55:310
9764991910,3cyclictest0-21swapper/011:48:490
9764991910,1cyclictest0-21swapper/007:43:560
249221910,0sleep00-21swapper/008:13:090
9764991812,2cyclictest24984-21/usr/sbin/munin12:03:550
976599174,10cyclictest0-21swapper/107:13:541
976499173,8cyclictest0-21swapper/008:48:490
9764991715,2cyclictest7-21ksoftirqd/009:34:290
9764991710,5cyclictest0-21swapper/010:13:140
9764991710,3cyclictest0-21swapper/010:28:490
9764991710,2cyclictest0-21swapper/008:03:510
9764991710,2cyclictest0-21swapper/008:03:510
9764991610,3cyclictest0-21swapper/008:18:560
9764991610,0cyclictest0-21swapper/008:59:340
9764991510,2cyclictest0-21swapper/008:27:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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