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2026-07-11 - 19:36
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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 Sat Jul 11, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1722227354,8sleep10-21swapper/107:03:321
158862680,0sleep00-21swapper/009:25:490
301912670,0sleep10-21swapper/112:23:001
1889526553,8sleep00-21swapper/007:07:350
204422630,0sleep00-21swapper/010:10:320
19159993315,10cyclictest0-21swapper/009:56:020
1916099320,31cyclictest0-21swapper/108:00:521
19159993128,2cyclictest7-21ksoftirqd/007:23:460
19160993010,14cyclictest0-21swapper/109:18:441
1915999300,1cyclictest0-21swapper/011:39:400
1915999300,10cyclictest7-21ksoftirqd/010:18:450
1916099290,29cyclictest0-21swapper/112:01:461
1915999293,4cyclictest91rcu_preempt09:44:430
1915999292,1cyclictest7-21ksoftirqd/010:00:240
1916099285,22cyclictest0-21swapper/112:06:251
1916099280,28cyclictest0-21swapper/108:19:461
19159992826,1cyclictest7-21ksoftirqd/009:28:410
1915999277,2cyclictest91rcu_preempt10:06:230
19159992721,3cyclictest0-21swapper/011:36:000
19159992713,8cyclictest7-21ksoftirqd/010:34:320
1915999270,12cyclictest0-21swapper/010:58:480
19160992610,2cyclictest0-21swapper/109:24:171
19159992623,2cyclictest7-21ksoftirqd/012:13:470
19159992623,2cyclictest7-21ksoftirqd/010:15:350
19159992622,3cyclictest7-21ksoftirqd/011:11:310
19159992612,2cyclictest91rcu_preempt09:50:550
1915999260,4cyclictest91rcu_preempt10:43:260
1915999260,2cyclictest91rcu_preempt11:23:470
19160992520,4cyclictest28968-21apache208:06:271
19160992517,5cyclictest28998-21apache210:11:091
19160992510,9cyclictest0-21swapper/110:50:111
1915999252,7cyclictest91rcu_preempt07:18:270
19159992524,1cyclictest7-21ksoftirqd/009:08:420
19159992524,0cyclictest7-21ksoftirqd/011:06:400
1915999252,11cyclictest91rcu_preempt10:48:100
1915999251,13cyclictest91rcu_preempt07:15:450
19159992510,6cyclictest0-21swapper/011:28:400
19159992510,11cyclictest0-21swapper/010:49:490
19159992510,11cyclictest0-21swapper/008:38:260
1915999250,2cyclictest91rcu_preempt11:23:120
1916099245,10cyclictest0-21swapper/110:03:411
19160992413,7cyclictest28968-21apache210:30:251
19160992410,6cyclictest0-21swapper/109:42:431
1915999249,6cyclictest81ktimersoftd/008:13:470
1915999249,3cyclictest91rcu_preempt12:33:180
19159992423,1cyclictest7-21ksoftirqd/008:58:410
19159992414,2cyclictest91rcu_preempt12:06:190
19159992413,6cyclictest0-21swapper/009:21:200
19159992412,6cyclictest7-21ksoftirqd/010:53:480
19159992410,5cyclictest0-21swapper/009:37:070
19159992410,2cyclictest0-21swapper/008:08:430
19160992321,1cyclictest0-21swapper/109:13:441
19160992317,5cyclictest28968-21apache211:56:221
19160992311,5cyclictest0-21swapper/108:23:461
19160992310,8cyclictest28968-21apache210:35:091
19160992310,6cyclictest0-21swapper/111:33:381
1915999235,3cyclictest91rcu_preempt11:16:440
19159992319,2cyclictest7-21ksoftirqd/011:53:470
19159992319,2cyclictest7-21ksoftirqd/007:33:430
19159992314,1cyclictest0-21swapper/011:48:400
1915999231,3cyclictest91rcu_preempt12:08:470
1915999231,13cyclictest0-21swapper/012:23:380
19159992310,5cyclictest0-21swapper/009:13:470
1915999230,3cyclictest91rcu_preempt09:39:140
1915999230,20cyclictest21662-21kworker/u4:210:28:450
1916099226,7cyclictest23383-21ls10:13:491
1916099222,6cyclictest0-21swapper/111:43:561
19160992220,1cyclictest0-21swapper/112:31:171
19160992217,4cyclictest28998-21apache207:36:021
19160992216,4cyclictest28998-21apache211:21:091
19160992214,5cyclictest0-21swapper/111:03:431
1916099221,20cyclictest0-21swapper/110:40:341
19160992210,7cyclictest0-21swapper/112:35:161
19160992210,7cyclictest0-21swapper/112:24:561
19160992210,4cyclictest0-21swapper/111:11:091
19160992210,4cyclictest0-21swapper/110:43:381
19160992210,4cyclictest0-21swapper/109:59:321
19160992210,0cyclictest0-21swapper/109:53:471
1915999223,5cyclictest30617-21apache_volume10:23:390
1915999220,6cyclictest0-21swapper/012:03:130
104522210,0sleep10-21swapper/110:26:591
19160992117,4cyclictest28968-21apache209:30:391
19160992110,5cyclictest0-21swapper/110:20:221
19160992110,0cyclictest0-21swapper/107:28:461
1915999212,10cyclictest0-21swapper/008:18:380
19159992117,3cyclictest28968-21apache208:06:250
1916099203,8cyclictest29583-21ssh11:41:491
1916099203,12cyclictest0-21swapper/108:53:411
1916099203,11cyclictest0-21swapper/107:13:391
19160992018,2cyclictest947-21sendmail-mta11:30:181
19160992012,4cyclictest636-21nscd12:08:451
19160992010,5cyclictest0-21swapper/109:03:441
19160992010,4cyclictest0-21swapper/111:23:381
19159992020,0cyclictest7-21ksoftirqd/008:43:460
19159992018,1cyclictest7-21ksoftirqd/012:34:090
19159992018,1cyclictest0-21swapper/011:47:140
19159992017,2cyclictest7-21ksoftirqd/012:18:460
19159992017,2cyclictest19188-21apache_volume07:08:390
1916099198,5cyclictest25301-21/usr/sbin/munin07:23:401
1916099194,8cyclictest0-21swapper/107:38:451
1916099194,11cyclictest1847-21kworker/u4:112:14:171
19160991917,1cyclictest26779-21pidof08:49:041
19160991910,6cyclictest0-21swapper/111:50:591
19160991910,6cyclictest0-21swapper/107:48:381
19160991910,3cyclictest0-21swapper/110:53:441
19160991910,2cyclictest0-21swapper/111:13:421
1916099190,8cyclictest0-21swapper/107:53:481
1916099190,12cyclictest0-21swapper/107:43:471
19159991916,3cyclictest0-21swapper/008:48:400
19159991916,2cyclictest28393-21swap08:53:480
19159991914,5cyclictest947-21sendmail-mta08:25:130
19159991912,4cyclictest28998-21apache207:53:490
1915999190,0cyclictest0-21swapper/007:38:430
1916099184,7cyclictest596-21diskmemload09:13:211
1916099183,8cyclictest19953-21ntp_states07:08:451
1916099182,13cyclictest0-21swapper/109:43:481
1916099181,7cyclictest0-21swapper/108:33:381
19160991815,1cyclictest25683-21cron09:38:271
19160991813,3cyclictest0-21swapper/108:08:411
19160991810,2cyclictest0-21swapper/110:58:391
19159991815,2cyclictest32038-21ntp_states09:03:440
19159991814,3cyclictest2441-21apache_processe07:48:390
19159991811,4cyclictest81ktimersoftd/008:38:390
19159991810,3cyclictest0-21swapper/007:28:400
19159991810,1cyclictest0-21swapper/007:58:390
1353621810,0sleep10-21swapper/108:16:041
1916099172,9cyclictest0-21swapper/108:38:381
1916099171,10cyclictest0-21swapper/108:58:481
19160991710,7cyclictest0-21swapper/108:31:381
19160991710,4cyclictest0-21swapper/108:43:491
19159991713,3cyclictest18419-21/usr/sbin/munin08:28:420
19160991610,6cyclictest0-21swapper/107:18:421
19160991610,1cyclictest0-21swapper/109:48:481
19159991614,1cyclictest451-21apache_accesses07:43:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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