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2026-05-13 - 22:24
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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 Wed May 13, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
721827866,7sleep00-21swapper/007:07:080
723026957,8sleep10-21swapper/107:07:151
315152640,0sleep10-21swapper/110:03:571
7576993810,0cyclictest0-21swapper/110:18:251
7576993010,2cyclictest0-21swapper/110:27:401
7576993010,1cyclictest0-21swapper/111:18:211
757699290,24cyclictest32185-21kworker/u4:109:23:081
7576992810,18cyclictest0-21swapper/110:56:111
7576992710,1cyclictest0-21swapper/110:10:471
7576992710,16cyclictest0-21swapper/107:14:071
7575992716,5cyclictest0-21swapper/010:16:020
7575992710,8cyclictest0-21swapper/012:08:180
757699261,4cyclictest0-21swapper/110:08:041
7576992610,6cyclictest0-21swapper/111:37:531
7576992523,1cyclictest0-21swapper/107:49:101
7576992521,2cyclictest17204-21rm09:44:141
7576992510,8cyclictest0-21swapper/111:29:151
7576992510,14cyclictest0-21swapper/109:50:211
7576992410,5cyclictest0-21swapper/107:19:081
757599248,15cyclictest914-21ssh11:31:180
7575992424,0cyclictest0-21swapper/012:20:430
7575992417,5cyclictest643-21nscd09:59:420
7575992411,10cyclictest100150irq/106-eth1-rx10:36:130
7575992410,2cyclictest100150irq/106-eth1-rx10:24:450
7576992310,1cyclictest0-21swapper/110:31:221
757599236,11cyclictest0-21swapper/011:59:070
7575992312,3cyclictest7573-21cyclictest11:09:150
757699224,17cyclictest0-21swapper/110:19:071
757699224,11cyclictest0-21swapper/109:14:111
7576992222,0cyclictest0-21swapper/108:06:251
7576992222,0cyclictest0-21swapper/108:06:251
7576992221,0cyclictest24-21ksoftirqd/110:53:571
7576992217,4cyclictest0-21swapper/111:11:451
7576992215,5cyclictest17492-21apache211:06:431
7576992210,8cyclictest0-21swapper/109:11:501
7576992210,1cyclictest0-21swapper/112:36:031
7575992222,0cyclictest0-21swapper/011:27:450
7575992215,6cyclictest636-21nscd11:23:140
7575992210,7cyclictest0-21swapper/010:59:080
2646722210,0sleep10-21swapper/111:22:211
954722110,0sleep10-21swapper/111:43:021
757699213,10cyclictest28992-21apache_processe12:09:091
757699212,13cyclictest0-21swapper/107:09:101
7576992117,3cyclictest17472-21apache211:28:061
7576992117,3cyclictest17472-21apache210:44:541
7576992113,6cyclictest100150irq/106-eth1-rx07:42:061
7576992111,8cyclictest6942-21ssh12:22:371
7576992110,5cyclictest0-21swapper/109:29:081
7576992110,4cyclictest0-21swapper/109:35:351
757599219,7cyclictest636-21nscd11:07:020
757599215,7cyclictest0-21swapper/007:14:110
757599214,12cyclictest0-21swapper/007:39:100
7575992120,0cyclictest32185-21kworker/u4:109:37:510
7575992114,3cyclictest17472-21apache208:59:140
7575992110,7cyclictest0-21swapper/010:06:310
7575992110,0cyclictest0-21swapper/009:23:430
757699205,7cyclictest0-21swapper/108:14:141
757699200,12cyclictest0-21swapper/108:44:091
757599206,4cyclictest28224-21ls07:59:170
757599206,12cyclictest0-21swapper/009:04:070
757599204,9cyclictest0-21swapper/007:44:060
757599203,9cyclictest0-21swapper/008:39:110
7575992018,1cyclictest0-21swapper/011:50:160
7575992015,1cyclictest0-21swapper/007:24:090
7575992011,6cyclictest100150irq/106-eth1-rx09:49:100
7575992010,7cyclictest0-21swapper/010:42:310
7575992010,5cyclictest0-21swapper/012:32:550
7575992010,4cyclictest81ktimersoftd/012:14:120
7575992010,4cyclictest0-21swapper/010:49:150
7575992010,2cyclictest0-21swapper/009:30:590
7575992010,10cyclictest0-21swapper/011:47:190
757599200,15cyclictest13941-21apache_processe08:49:090
1825722010,0sleep00-21swapper/009:45:120
953521910,1sleep10-21swapper/108:34:591
757699199,8cyclictest4348-21apache_accesses08:24:071
757699197,6cyclictest8117-21latency_hist08:33:561
757699195,12cyclictest0-21swapper/112:14:161
757699194,8cyclictest0-21swapper/108:09:101
757699193,12cyclictest0-21swapper/109:24:111
7576991918,1cyclictest24-21ksoftirqd/108:49:151
7576991918,1cyclictest17472-21apache209:55:431
7576991916,3cyclictest744-21snmpd11:45:291
757699191,13cyclictest0-21swapper/108:19:151
7576991910,5cyclictest0-21swapper/109:08:301
7576991910,2cyclictest0-21swapper/112:24:101
7576991910,1cyclictest0-21swapper/112:05:421
757699190,7cyclictest13852-21apache_processe11:49:071
757699190,0cyclictest0-21swapper/109:40:281
757599195,9cyclictest0-21swapper/011:34:140
757599195,6cyclictest0-21swapper/012:09:090
757599192,15cyclictest0-21swapper/010:54:130
757599192,13cyclictest0-21swapper/011:39:170
7575991915,2cyclictest10662-21diskmemload12:27:190
7575991910,6cyclictest0-21swapper/009:54:150
7575991910,5cyclictest0-21swapper/010:10:080
7575991910,4cyclictest0-21swapper/009:12:330
7575991910,2cyclictest0-21swapper/011:15:280
757599190,4cyclictest4207-21basename08:23:570
2751621910,0sleep00-21swapper/009:15:050
757699189,3cyclictest24-21ksoftirqd/107:44:141
757699184,8cyclictest0-21swapper/107:59:161
757699184,7cyclictest25694-21/usr/sbin/munin10:39:101
757699184,6cyclictest9345-21/usr/sbin/munin10:59:161
757699182,11cyclictest0-21swapper/111:54:081
7576991810,5cyclictest0-21swapper/110:34:121
7576991810,4cyclictest0-21swapper/112:33:011
7576991810,4cyclictest0-21swapper/108:59:081
757599188,8cyclictest7603-21apache_volume07:09:100
757599184,11cyclictest0-21swapper/008:44:070
757599182,9cyclictest8394-21df_inode08:34:070
757599181,8cyclictest0-21swapper/007:29:150
7575991814,3cyclictest17492-21apache210:29:060
7575991812,5cyclictest17492-21apache208:04:290
7575991812,5cyclictest17492-21apache208:04:290
7575991810,5cyclictest0-21swapper/011:56:050
757699176,7cyclictest0-21swapper/107:29:111
757699173,6cyclictest15849-21/usr/sbin/munin08:54:091
7576991717,0cyclictest0-21swapper/112:02:071
7576991710,4cyclictest0-21swapper/107:24:081
7576991710,2cyclictest0-21swapper/107:54:141
757599174,8cyclictest0-21swapper/008:09:130
757599173,5cyclictest21511-21diskmemload10:44:160
7575991710,4cyclictest0-21swapper/012:34:130
7575991710,4cyclictest0-21swapper/008:24:100
7575991710,4cyclictest0-21swapper/007:34:150
7575991710,3cyclictest0-21swapper/009:39:090
757599170,1cyclictest0-21swapper/008:54:080
757699168,3cyclictest0-21swapper/108:39:101
757699161,8cyclictest0-21swapper/107:34:101
757599164,5cyclictest26016-21/usr/sbin/munin07:54:140
757599163,7cyclictest0-21swapper/008:29:140
7575991610,3cyclictest0-21swapper/010:19:250
7575991610,3cyclictest0-21swapper/009:28:530
7575991411,2cyclictest0-21swapper/008:14:080
7575991410,2cyclictest0-21swapper/007:49:090
7575991410,0cyclictest0-21swapper/007:23:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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