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2026-03-16 - 15:10
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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 all highest latencies:
System rackcslot2.osadl.org (updated Mon Mar 16, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10712760,0sleep10-21swapper/110:23:271
2762327057,8sleep00-21swapper/007:04:290
2912426855,8sleep10-21swapper/107:06:471
29556993614,3cyclictest91rcu_preempt09:50:391
29556993533,1cyclictest24-21ksoftirqd/109:22:451
2955699348,4cyclictest91rcu_preempt09:33:451
2955699347,4cyclictest91rcu_preempt09:35:421
29556993417,4cyclictest91rcu_preempt11:38:001
29556993325,5cyclictest91rcu_preempt10:47:051
29556993229,1cyclictest0-21swapper/108:18:571
29556993212,3cyclictest91rcu_preempt11:01:201
29555993232,0cyclictest0-21swapper/009:31:180
29556993129,1cyclictest24-21ksoftirqd/109:12:271
29556993010,3cyclictest6799-21kworker/u4:109:59:371
2955599300,1cyclictest0-21swapper/010:05:490
2955699295,2cyclictest91rcu_preempt12:36:431
2955699295,2cyclictest91rcu_preempt09:15:311
29556992921,4cyclictest231ktimersoftd/107:14:361
2955699284,1cyclictest91rcu_preempt11:27:151
29556992823,3cyclictest24-21ksoftirqd/109:41:341
29556992821,0cyclictest91rcu_preempt12:20:481
29556992817,5cyclictest231ktimersoftd/110:29:331
29556992811,4cyclictest91rcu_preempt10:16:071
2955699277,2cyclictest91rcu_preempt10:10:361
29556992724,2cyclictest17320-21ntp_states12:14:401
29556992723,3cyclictest20010-21cut10:49:371
29556992723,3cyclictest12635-21cron12:09:231
29556992718,1cyclictest91rcu_preempt11:42:471
29555992710,6cyclictest0-21swapper/011:25:050
29556992624,1cyclictest2580-21ntp_states11:09:401
29556992623,2cyclictest9290-21diskstats07:39:371
29556992623,2cyclictest4938-21apache_volume09:44:341
29556992623,2cyclictest23404-21ntp_states09:24:401
29556992623,2cyclictest13068-21df_inode12:09:351
29556992622,3cyclictest29825-21ssh12:32:161
29556992622,3cyclictest1863-21/usr/sbin/munin07:19:401
29556992617,8cyclictest19674-21swap08:04:421
29556992613,1cyclictest91rcu_preempt11:56:271
29555992620,5cyclictest7071-21apache209:16:110
29555992620,5cyclictest7055-21apache210:35:460
2955599260,1cyclictest11093-21diskmemload09:23:070
29556992522,2cyclictest30772-21df_inode11:04:351
29556992522,2cyclictest0-21swapper/110:34:331
29556992521,3cyclictest29104-21ps08:29:401
29556992518,6cyclictest26829-21/usr/sbin/munin08:24:391
29556992510,12cyclictest24-21ksoftirqd/109:57:551
2955699250,4cyclictest0-21swapper/111:14:311
2955699245,0cyclictest91rcu_preempt08:19:391
29556992422,1cyclictest32083-21apache_volume08:39:351
29556992422,1cyclictest15823-21python07:54:421
29556992421,2cyclictest9055-21sh11:19:311
29556992421,2cyclictest31079-21tune2fs11:49:351
29556992421,2cyclictest21329-21ntp_states08:09:421
29556992420,3cyclictest0-21swapper/110:07:401
29556992417,1cyclictest24-21ksoftirqd/107:44:351
29556992416,3cyclictest30140-21seq08:34:311
29555992424,0cyclictest0-21swapper/008:24:480
29555992420,3cyclictest27854-21ntp_states10:59:400
29555992410,6cyclictest0-21swapper/010:47:450
29555992410,5cyclictest0-21swapper/010:55:380
2955699236,5cyclictest91rcu_preempt10:28:171
2955699234,15cyclictest0-21swapper/107:49:341
29556992320,2cyclictest8877-21mandb07:39:231
29556992320,2cyclictest3692-21cstates08:49:351
29556992320,2cyclictest252292sleep112:25:271
29556992320,2cyclictest17115-21needreboot11:29:391
29556992320,2cyclictest0-21swapper/107:59:351
29556992317,6cyclictest6737-21dpkg07:34:231
29556992312,6cyclictest231ktimersoftd/110:39:391
29556992311,1cyclictest91rcu_preempt08:57:461
29555992318,4cyclictest81ktimersoftd/012:16:250
29555992312,7cyclictest81ktimersoftd/009:45:470
29555992310,4cyclictest0-21swapper/012:12:430
29555992310,4cyclictest0-21swapper/007:49:380
29556992220,2cyclictest0-21swapper/110:58:541
29556992220,2cyclictest0-21swapper/107:24:421
29556992213,8cyclictest27436-21ls11:44:361
2955599226,7cyclictest0-21swapper/007:09:340
29555992222,0cyclictest0-21swapper/009:35:470
29555992218,3cyclictest7071-21apache210:03:480
29555992212,5cyclictest18467-21ssh11:31:240
29555992211,6cyclictest100250irq/107-eth1-rx12:06:380
29555992210,7cyclictest0-21swapper/011:59:380
29555992210,5cyclictest0-21swapper/009:39:240
29555992210,0cyclictest0-21swapper/009:04:340
2955599220,1cyclictest0-21swapper/012:25:120
2955599220,17cyclictest0-21swapper/010:54:180
29556992118,2cyclictest8978-21sshd12:03:541
29556992114,3cyclictest7631-21df_inode08:59:351
2955599215,5cyclictest0-21swapper/011:56:510
29555992116,5cyclictest7071-21apache212:35:200
29555992115,1cyclictest7055-21apache208:49:370
29555992110,6cyclictest0-21swapper/012:19:330
2955599210,4cyclictest13377-21/usr/sbin/munin09:54:420
29556992017,2cyclictest0-21swapper/109:04:371
2955599202,10cyclictest0-21swapper/010:18:300
29555992012,5cyclictest0-21swapper/008:09:510
29555992010,7cyclictest0-21swapper/010:12:020
29555992010,6cyclictest0-21swapper/011:19:380
29555992010,5cyclictest0-21swapper/010:42:290
29555992010,5cyclictest0-21swapper/010:22:140
29555992010,5cyclictest0-21swapper/009:24:350
29555992010,4cyclictest0-21swapper/012:31:090
29555992010,4cyclictest0-21swapper/011:14:280
29555992010,4cyclictest0-21swapper/011:09:400
2955599194,9cyclictest0-21swapper/008:14:350
29555991918,1cyclictest29553-21cyclictest11:35:100
29555991915,3cyclictest802-21apache208:37:360
29555991910,6cyclictest0-21swapper/009:50:150
29555991910,4cyclictest0-21swapper/007:14:340
29555991910,3cyclictest2293-21needreboot08:44:390
29555991910,3cyclictest0-21swapper/008:04:350
29556991818,0cyclictest0-21swapper/108:45:311
29556991816,2cyclictest0-21swapper/107:11:511
2955599184,9cyclictest0-21swapper/010:24:350
29555991815,0cyclictest100250irq/107-eth1-rx11:07:090
29555991810,4cyclictest0-21swapper/010:30:020
29555991810,4cyclictest0-21swapper/007:59:360
29555991810,3cyclictest0-21swapper/007:44:350
29555991810,2cyclictest0-21swapper/011:40:370
29555991810,2cyclictest0-21swapper/009:10:270
29555991810,1cyclictest0-21swapper/011:49:420
29555991810,1cyclictest0-21swapper/011:44:360
2955599174,5cyclictest0-21swapper/008:54:420
2955599173,4cyclictest8918-21tr07:39:230
29555991710,3cyclictest0-21swapper/007:55:020
29555991710,3cyclictest0-21swapper/007:29:330
29555991710,1cyclictest0-21swapper/008:29:410
2955599161,7cyclictest24797-21/usr/sbin/munin08:19:370
29555991611,2cyclictest7055-21apache208:39:350
29555991610,4cyclictest0-21swapper/007:39:360
29555991610,2cyclictest0-21swapper/008:59:340
29555991510,5cyclictest0-21swapper/007:27:200
29555991510,1cyclictest0-21swapper/007:19:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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