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2026-08-17 - 11:04
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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 Aug 17, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1678827152,15sleep00-21swapper/019:04:500
34212690,0sleep10-21swapper/100:18:251
1535026655,7sleep10-21swapper/119:03:141
17284993710,3cyclictest0-21swapper/119:57:561
17284993710,2cyclictest0-21swapper/121:09:201
17283993430,2cyclictest7-21ksoftirqd/022:43:280
17284993029,1cyclictest0-21swapper/120:46:561
17284993010,14cyclictest0-21swapper/123:22:261
17284992927,1cyclictest0-21swapper/123:55:261
17284992820,7cyclictest30574-21ssh21:51:571
17283992827,1cyclictest7-21ksoftirqd/023:03:180
1728499265,2cyclictest0-21swapper/121:14:521
17284992626,0cyclictest0-21swapper/120:31:521
1728499261,20cyclictest0-21swapper/121:24:001
17284992610,3cyclictest0-21swapper/123:59:481
17283992624,1cyclictest7-21ksoftirqd/020:28:200
17284992523,2cyclictest27992-21apache223:28:001
17284992520,3cyclictest705-21ntpd23:15:051
1728499251,22cyclictest29621-21if_eth021:03:231
17284992510,5cyclictest0-21swapper/120:23:281
1728399251,23cyclictest29376-21ssh22:35:120
1728399250,1cyclictest25331-21ssh22:28:580
1728499243,21cyclictest0-21swapper/100:03:241
17284992410,6cyclictest0-21swapper/123:30:501
17284992410,4cyclictest0-21swapper/119:23:231
1728499240,23cyclictest0-21swapper/120:58:281
1728499240,20cyclictest0-21swapper/122:17:061
17283992410,0cyclictest4095-21kworker/u4:200:11:240
1728399240,4cyclictest0-21swapper/022:15:340
1728399240,4cyclictest0-21swapper/000:15:400
1728399240,19cyclictest6072-21/usr/sbin/munin20:03:200
1728499237,3cyclictest0-21swapper/119:13:421
1728499235,12cyclictest0-21swapper/119:43:221
1728499234,5cyclictest30916-21diskmemload21:21:301
17284992322,0cyclictest0-21swapper/122:23:281
17284992320,2cyclictest0-21swapper/100:15:431
17284992310,7cyclictest0-21swapper/100:35:531
17284992310,5cyclictest0-21swapper/121:58:251
17284992310,0cyclictest0-21swapper/123:33:451
1728499230,1cyclictest0-21swapper/121:36:121
1728399236,5cyclictest30916-21diskmemload23:28:310
1728399232,20cyclictest30916-21diskmemload21:32:140
17283992312,5cyclictest27992-21apache221:08:290
17283992310,4cyclictest0-21swapper/023:02:000
1728399230,22cyclictest0-21swapper/022:22:590
1728399230,22cyclictest0-21swapper/019:22:250
17284992218,3cyclictest27992-21apache222:52:521
17284992217,1cyclictest17281-21cyclictest23:09:001
1728499221,20cyclictest0-21swapper/121:57:151
17284992210,6cyclictest0-21swapper/100:08:551
1728499220,15cyclictest0-21swapper/119:33:541
1728399223,18cyclictest5522-21kworker/u4:122:51:220
17283992221,1cyclictest27969-21apache221:39:060
17283992220,2cyclictest0-21swapper/022:25:480
17283992220,1cyclictest27992-21apache221:14:550
17283992215,5cyclictest17281-21cyclictest22:54:200
17283992214,3cyclictest7-21ksoftirqd/020:09:290
17283992213,3cyclictest0-21swapper/022:39:210
17283992211,10cyclictest0-21swapper/021:51:170
17283992210,4cyclictest0-21swapper/020:33:240
1728499214,13cyclictest0-21swapper/121:28:241
1728499213,6cyclictest0-21swapper/122:40:581
17284992121,0cyclictest0-21swapper/120:17:281
17284992115,3cyclictest27969-21apache219:10:441
17284992110,5cyclictest0-21swapper/119:38:241
17284992110,2cyclictest0-21swapper/122:11:171
1728499210,12cyclictest0-21swapper/120:03:201
1728399213,5cyclictest91rcu_preempt00:33:260
17283992117,4cyclictest16204-21munin-node21:26:090
17283992113,2cyclictest31541-21fschecks_count21:53:200
17283992110,6cyclictest0-21swapper/022:00:310
17283992110,5cyclictest0-21swapper/022:10:330
17283992110,3cyclictest0-21swapper/021:19:370
2560722010,8sleep125690-21/usr/sbin/munin20:53:241
1728499206,7cyclictest0-21swapper/119:28:281
1728499203,10cyclictest0-21swapper/100:28:221
17284992018,1cyclictest0-21swapper/122:03:261
17284992010,5cyclictest0-21swapper/121:47:441
1728499200,10cyclictest0-21swapper/120:08:201
1728399202,8cyclictest0-21swapper/023:19:270
17283992020,0cyclictest0-21swapper/019:46:150
1728399201,5cyclictest91rcu_preempt23:43:220
17283992012,5cyclictest0-21swapper/019:48:260
17283992011,4cyclictest100250irq/107-eth1-rx23:10:420
17283992011,1cyclictest0-21swapper/000:28:280
17283992010,5cyclictest0-21swapper/020:53:250
17283992010,4cyclictest0-21swapper/023:34:190
17283992010,4cyclictest0-21swapper/019:55:390
17283992010,4cyclictest0-21swapper/019:23:280
1728399200,3cyclictest0-21swapper/023:58:220
1728399200,19cyclictest0-21swapper/023:55:300
1429522010,0sleep10-21swapper/123:45:411
753321910,0sleep00-21swapper/022:04:020
2872521910,0sleep00-21swapper/021:00:280
2532621910,2sleep00-21swapper/023:15:230
2525221910,0sleep10-21swapper/122:28:471
1728499198,7cyclictest27969-21apache221:40:191
1728499195,9cyclictest0-21swapper/120:33:191
1728499193,8cyclictest5522-21kworker/u4:122:18:101
1728499192,13cyclictest0-21swapper/122:34:251
17284991910,6cyclictest0-21swapper/119:18:121
17284991910,5cyclictest0-21swapper/122:46:511
17284991910,3cyclictest0-21swapper/120:38:111
1728399193,5cyclictest0-21swapper/021:43:130
1728399191,7cyclictest0-21swapper/000:03:290
17283991917,2cyclictest27992-21apache221:35:090
17283991910,2cyclictest0-21swapper/000:18:250
1728499184,4cyclictest0-21swapper/120:18:291
1728499184,4cyclictest0-21swapper/120:18:291
1728499181,1cyclictest7359-21rm00:23:301
17284991810,2cyclictest0-21swapper/119:58:211
17283991818,0cyclictest0-21swapper/020:00:310
17283991817,0cyclictest7-21ksoftirqd/023:38:260
17283991816,1cyclictest27992-21apache219:28:190
17283991810,7cyclictest0-21swapper/000:24:290
1728499174,7cyclictest0-21swapper/122:58:301
1728499171,9cyclictest0-21swapper/123:38:191
17284991717,0cyclictest0-21swapper/123:03:201
17284991710,3cyclictest0-21swapper/123:49:071
1728399171,9cyclictest20152-21memory20:38:250
17283991716,1cyclictest7-21ksoftirqd/020:23:200
17283991716,1cyclictest27969-21apache220:17:360
17283991716,1cyclictest24479-21snmpd19:37:180
17283991716,1cyclictest0-21swapper/020:49:270
17283991716,0cyclictest7-21ksoftirqd/019:08:260
17283991715,1cyclictest27992-21apache223:49:120
17283991710,5cyclictest0-21swapper/023:26:400
17283991710,4cyclictest0-21swapper/021:03:200
17283991710,2cyclictest0-21swapper/019:13:570
17283991710,1cyclictest91rcu_preempt20:43:200
17284991610,1cyclictest0-21swapper/122:54:451
17283991610,2cyclictest0-21swapper/020:18:220
17283991610,2cyclictest0-21swapper/020:18:220
17284991511,3cyclictest21252-21kworker/1:120:49:431
17284991510,4cyclictest0-21swapper/119:48:191
17283991410,2cyclictest0-21swapper/019:38:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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