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2025-11-21 - 18:58
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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 Fri Nov 21, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2884326956,8sleep00-21swapper/007:02:140
2899626754,8sleep10-21swapper/107:03:501
29457994311,20cyclictest91rcu_preempt12:17:130
29457994111,28cyclictest91rcu_preempt09:31:060
29457994110,31cyclictest0-21swapper/010:57:290
29457994110,30cyclictest0-21swapper/011:36:160
29457994010,30cyclictest0-21swapper/009:41:570
29457994010,29cyclictest0-21swapper/009:10:020
29457993911,24cyclictest91rcu_preempt10:30:510
29457993910,29cyclictest0-21swapper/008:52:050
29457993910,28cyclictest0-21swapper/007:12:070
29457993910,28cyclictest0-21swapper/007:07:070
29457993910,17cyclictest91rcu_preempt09:14:210
29457993813,23cyclictest91rcu_preempt08:20:570
29457993811,25cyclictest91rcu_preempt09:52:000
29457993712,23cyclictest91rcu_preempt12:02:450
29457993711,25cyclictest0-21swapper/012:11:580
29457993710,27cyclictest0-21swapper/011:20:580
2945799370,36cyclictest6134-21uptime10:22:060
29457993610,26cyclictest0-21swapper/011:47:050
29457993610,25cyclictest0-21swapper/012:30:590
29457993610,25cyclictest0-21swapper/012:24:070
29457993610,25cyclictest0-21swapper/011:26:170
2945799360,35cyclictest3547-21/usr/sbin/munin07:22:000
2945799360,35cyclictest28488-21load10:52:020
2945799360,35cyclictest1266-21apache_accesses11:41:580
29457993510,24cyclictest0-21swapper/012:32:030
29457993510,24cyclictest0-21swapper/010:21:360
29457993510,24cyclictest0-21swapper/007:45:540
2945799350,34cyclictest9661-21ssh11:52:020
2945799350,34cyclictest23266-21df09:21:570
2945799350,34cyclictest23026-21ssh12:11:320
2945799350,34cyclictest13525-21ntp_states07:47:090
2945799350,34cyclictest0-21swapper/010:38:100
29457993410,23cyclictest0-21swapper/011:14:320
29457993410,23cyclictest0-21swapper/009:32:260
29457993410,22cyclictest0-21swapper/009:02:040
2945799340,33cyclictest9273-21hddtemp_smartct07:37:020
2945799340,33cyclictest31757-21cron08:36:450
2945799340,33cyclictest30193-21if_eth310:12:010
2945799340,33cyclictest10970-21diskmemload11:38:200
2945799340,33cyclictest0-21swapper/011:09:390
2945799340,33cyclictest0-21swapper/010:45:240
2945799340,32cyclictest22181-21apache_processe11:26:560
2945799340,32cyclictest10600-21ssh09:47:000
2945799340,26cyclictest931-21apache_accesses07:16:550
29457993310,22cyclictest0-21swapper/010:34:010
2945799330,32cyclictest6627-21latency_hist07:31:460
2945799330,32cyclictest21092-21ls08:07:000
2945799330,32cyclictest20644-21ssh09:17:160
2945799330,32cyclictest1693-21df_inode08:42:000
2945799330,32cyclictest10970-21diskmemload10:01:530
2945799330,31cyclictest26212-21sh10:07:000
2945799321,30cyclictest17195-21sort07:57:020
29457993210,21cyclictest7493-21cstates08:56:570
2945799320,31cyclictest85262chrt07:34:410
2945799320,31cyclictest0-21swapper/012:00:260
2945799320,31cyclictest0-21swapper/008:26:240
2945799311,29cyclictest15164-21if_eth207:52:000
29457993110,21cyclictest0-21swapper/008:02:010
2945799310,30cyclictest0-21swapper/011:02:400
2945799310,30cyclictest0-21swapper/010:47:280
2945799310,30cyclictest0-21swapper/008:37:040
2945799302,27cyclictest0-21swapper/008:46:580
2945799300,29cyclictest18037-21apache_processe09:56:560
2945799300,29cyclictest0-21swapper/008:12:020
2945899290,2cyclictest0-21swapper/112:31:221
29457992910,17cyclictest0-21swapper/008:27:010
2945799290,28cyclictest0-21swapper/009:36:510
29458992727,0cyclictest0-21swapper/111:17:581
2945899270,20cyclictest0-21swapper/110:26:371
29458992519,3cyclictest231ktimersoftd/110:45:481
2945899251,23cyclictest0-21swapper/109:34:191
2945899250,24cyclictest0-21swapper/112:31:521
2945899245,16cyclictest4703-21kworker/u4:211:39:181
29458992423,1cyclictest6894-21apache212:09:061
29458992423,1cyclictest6894-21apache209:13:581
29458992422,1cyclictest514-21users10:57:131
2945899240,1cyclictest5628-21ssh11:04:481
2945899232,9cyclictest0-21swapper/108:47:051
2355622310,0sleep10-21swapper/110:03:061
2945899225,10cyclictest0-21swapper/108:37:031
29458992214,7cyclictest6894-21apache210:18:581
29458992214,6cyclictest6920-21apache212:01:511
29458992210,9cyclictest0-21swapper/111:44:541
2945899219,7cyclictest636-21nscd10:30:401
2945899217,9cyclictest0-21swapper/110:34:241
2945899212,19cyclictest0-21swapper/109:07:151
29458992120,1cyclictest0-21swapper/109:58:581
29458992111,3cyclictest97850irq/107-eth1-rx11:08:251
29458992110,4cyclictest0-21swapper/111:52:011
29458992110,4cyclictest0-21swapper/110:52:051
29458992110,10cyclictest22840-21kworker/1:212:17:051
2463822110,1sleep10-21swapper/109:22:411
140022210,0sleep10-21swapper/111:16:101
3254822010,3sleep10-21swapper/112:23:261
2945899207,7cyclictest636-21nscd09:38:401
2945899202,11cyclictest0-21swapper/108:56:571
29458992018,1cyclictest15252-21ls09:52:051
29458992011,4cyclictest6894-21apache212:15:251
29458992010,5cyclictest0-21swapper/111:34:201
1322222010,0sleep10-21swapper/109:50:381
2945899194,14cyclictest0-21swapper/107:47:111
2945899191,7cyclictest636-21nscd08:01:561
2945899191,2cyclictest0-21swapper/111:46:581
29458991912,5cyclictest12408-21/usr/sbin/munin11:56:581
2945899190,5cyclictest0-21swapper/107:21:051
2173021910,0sleep10-21swapper/109:19:271
2039621910,0sleep10-21swapper/108:06:501
2945899185,11cyclictest0-21swapper/108:16:581
2945899184,10cyclictest0-21swapper/111:26:581
2945899183,9cyclictest0-21swapper/109:02:031
29458991815,2cyclictest6920-21apache208:14:491
2945899181,12cyclictest0-21swapper/107:57:071
29458991810,5cyclictest0-21swapper/110:37:471
29458991810,4cyclictest0-21swapper/110:13:451
29458991810,4cyclictest0-21swapper/109:45:111
29458991810,3cyclictest14650-21/usr/sbin/munin07:52:031
29458991810,3cyclictest0-21swapper/107:37:001
29458991810,2cyclictest0-21swapper/110:47:011
29458991810,2cyclictest0-21swapper/109:27:071
29458991810,2cyclictest0-21swapper/108:22:051
2945899180,7cyclictest0-21swapper/107:26:561
2945899175,7cyclictest0-21swapper/107:16:061
2945899172,8cyclictest0-21swapper/110:07:001
29458991710,4cyclictest0-21swapper/108:27:071
29458991710,3cyclictest0-21swapper/107:21:551
29458991710,2cyclictest0-21swapper/108:34:561
29458991710,1cyclictest0-21swapper/108:42:071
2945899170,10cyclictest0-21swapper/108:54:591
2062621710,0sleep10-21swapper/111:24:091
2945899163,3cyclictest8730-21cron07:36:461
29458991610,5cyclictest0-21swapper/107:42:011
2945899152,3cyclictest29486-21apache_volume07:06:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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