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2026-04-26 - 06:19
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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 Sun Apr 26, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
570527158,8sleep00-21swapper/019:08:580
537826956,8sleep10-21swapper/119:05:331
113182630,0sleep111319-21sh22:59:561
5900993511,14cyclictest91rcu_preempt00:37:571
5900993417,2cyclictest91rcu_preempt19:44:251
5900993413,2cyclictest91rcu_preempt19:09:171
590099339,2cyclictest91rcu_preempt21:31:201
590099335,5cyclictest91rcu_preempt23:41:231
590099333,4cyclictest91rcu_preempt19:34:191
590099329,11cyclictest91rcu_preempt20:29:511
5900993211,3cyclictest91rcu_preempt23:28:041
590099319,7cyclictest24-21ksoftirqd/121:15:151
590099313,1cyclictest91rcu_preempt19:54:161
5900993110,17cyclictest26463-21kworker/u4:021:20:051
590099306,2cyclictest91rcu_preempt21:43:361
5900993021,5cyclictest24-21ksoftirqd/122:43:221
5900993011,10cyclictest91rcu_preempt22:56:211
590099299,6cyclictest91rcu_preempt21:51:151
590099297,2cyclictest91rcu_preempt00:21:061
590099294,3cyclictest91rcu_preempt23:59:551
589999290,27cyclictest0-21swapper/020:42:280
590099285,1cyclictest91rcu_preempt23:37:071
5900992827,0cyclictest24-21ksoftirqd/100:10:521
590099282,10cyclictest11517-21kworker/1:221:36:171
590099282,10cyclictest11517-21kworker/1:221:36:171
5900992815,1cyclictest91rcu_preempt22:19:171
5900992814,4cyclictest91rcu_preempt22:38:231
5900992725,2cyclictest22684-21ssh21:12:151
5900992719,1cyclictest24-21ksoftirqd/123:04:261
5900992623,2cyclictest14181-21/usr/sbin/munin20:54:181
5900992622,3cyclictest27724-21df21:59:191
5900992622,3cyclictest11950-21apache_accesses20:49:161
5900992618,5cyclictest5880-21taskset22:12:501
5900992610,4cyclictest91rcu_preempt23:53:521
589999261,24cyclictest0-21swapper/000:36:020
5899992610,6cyclictest0-21swapper/022:24:430
590099255,5cyclictest91rcu_preempt20:40:431
590099254,5cyclictest91rcu_preempt22:49:091
5900992523,2cyclictest24-21ksoftirqd/123:56:381
5900992523,2cyclictest0-21swapper/122:29:201
5900992523,1cyclictest15876-21users00:29:261
5900992522,2cyclictest18182-21ntp_kernel_pll_19:39:221
5900992518,6cyclictest27118-21ssh23:19:591
5900992511,2cyclictest91rcu_preempt22:28:531
5899992523,1cyclictest0-21swapper/000:28:040
5900992422,1cyclictest3643-21users20:24:251
5900992422,1cyclictest10811-21ntp_states20:44:231
5900992422,0cyclictest24-21ksoftirqd/121:58:581
5900992421,2cyclictest32593-21python22:04:261
5900992421,2cyclictest29340-21hddtemp_smartct20:09:181
5900992421,2cyclictest0-21swapper/123:15:371
5900992419,1cyclictest24-21ksoftirqd/120:04:271
5900992415,5cyclictest231ktimersoftd/121:44:151
590099241,22cyclictest0-21swapper/122:44:221
5900992410,3cyclictest0-21swapper/122:16:411
5899992415,5cyclictest26394-21apache200:14:180
590099236,14cyclictest32561-21ls21:24:211
5900992321,2cyclictest19460-21diskmemload00:28:501
5900992321,1cyclictest18340-21memory21:04:211
5900992320,2cyclictest0-21swapper/119:24:271
5900992319,3cyclictest3438-21ps00:14:231
5900992319,1cyclictest24-21ksoftirqd/120:19:171
5900992316,6cyclictest2555-21ssh23:30:101
5900992310,9cyclictest0-21swapper/119:14:101
5899992318,3cyclictest11291-21tr21:39:050
5899992318,3cyclictest11291-21tr21:39:050
5899992312,5cyclictest32180-21fschecks_count21:24:190
5899992312,5cyclictest100450irq/109-eth1-tx21:10:540
5899992310,6cyclictest26421-21apache200:09:170
5899992310,6cyclictest0-21swapper/022:19:200
5899992310,5cyclictest0-21swapper/022:35:020
377822310,1sleep00-21swapper/020:25:410
5900992220,2cyclictest0-21swapper/123:12:181
5900992218,3cyclictest13811-21df_inode19:29:181
5900992218,3cyclictest0-21swapper/119:49:181
5900992218,3cyclictest0-21swapper/100:04:211
5900992211,4cyclictest231ktimersoftd/120:34:231
589999229,8cyclictest636-21nscd22:47:190
589999226,7cyclictest0-21swapper/021:04:210
589999225,9cyclictest0-21swapper/019:34:230
589999225,13cyclictest0-21swapper/022:09:250
589999224,17cyclictest0-21swapper/023:03:580
5899992219,2cyclictest0-21swapper/023:28:360
5900992119,1cyclictest0-21swapper/120:14:241
589999219,5cyclictest0-21swapper/023:19:530
589999213,8cyclictest0-21swapper/020:04:190
5899992121,0cyclictest0-21swapper/022:00:260
5899992118,2cyclictest26394-21apache221:58:310
5899992117,2cyclictest81ktimersoftd/020:54:170
5899992114,3cyclictest0-21swapper/021:53:070
5899992111,2cyclictest0-21swapper/023:35:180
5899992110,7cyclictest0-21swapper/021:44:040
5899992110,6cyclictest0-21swapper/023:04:520
5899992110,5cyclictest0-21swapper/022:49:300
589999210,2cyclictest24468-21ssh23:17:410
1816922110,0sleep00-21swapper/021:46:480
5900992019,1cyclictest26394-21apache223:44:201
5900992015,4cyclictest0-21swapper/120:59:191
590099201,14cyclictest0-21swapper/119:59:251
589999205,8cyclictest0-21swapper/020:09:170
5899992017,2cyclictest5897-21cyclictest20:19:050
5899992013,3cyclictest31805-21/usr/sbin/munin22:04:190
5899992011,3cyclictest0-21swapper/000:04:170
5899992010,6cyclictest0-21swapper/022:14:170
5899992010,2cyclictest0-21swapper/020:39:050
589999200,16cyclictest0-21swapper/023:43:100
5900991915,3cyclictest9780-21grep19:19:161
589999193,10cyclictest0-21swapper/023:09:210
589999192,12cyclictest0-21swapper/022:54:280
5899991915,1cyclictest0-21swapper/023:54:210
5899991914,2cyclictest10351-21fschecks_time20:44:190
5899991912,6cyclictest0-21swapper/000:29:240
589999191,16cyclictest100450irq/109-eth1-tx21:19:050
5899991910,7cyclictest0-21swapper/022:42:250
5899991910,5cyclictest0-21swapper/019:54:150
5899991910,4cyclictest0-21swapper/020:29:240
417521910,0sleep00-21swapper/023:33:250
2058521910,0sleep00-21swapper/022:30:410
589999186,11cyclictest3660-21/usr/sbin/munin21:29:180
589999185,7cyclictest31688-21perf21:24:050
589999184,5cyclictest0-21swapper/020:59:220
5899991816,2cyclictest0-21swapper/023:45:410
5899991810,5cyclictest25948-21pmu-power19:59:250
5899991810,5cyclictest0-21swapper/000:02:370
589999175,5cyclictest0-21swapper/019:09:260
589999172,12cyclictest0-21swapper/020:14:200
5899991717,0cyclictest0-21swapper/019:49:220
5899991710,6cyclictest0-21swapper/023:49:260
5899991710,4cyclictest0-21swapper/019:43:120
5899991710,3cyclictest0-21swapper/000:19:190
589999163,5cyclictest0-21swapper/020:49:160
5899991610,3cyclictest0-21swapper/019:16:180
5899991610,2cyclictest0-21swapper/019:44:230
5899991610,2cyclictest0-21swapper/019:24:090
589999149,3cyclictest81ktimersoftd/019:30:580
589999132,6cyclictest0-21swapper/019:19:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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