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2026-01-07 - 13:20
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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 Jan 07, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
295982710,0sleep00-21swapper/021:25:030
215482700,1sleep00-21swapper/023:58:440
295926852,7sleep10-21swapper/119:06:541
123792680,1sleep10-21swapper/123:46:131
284826351,8sleep00-21swapper/019:05:440
3425993910,7cyclictest24-21ksoftirqd/121:52:171
3425993836,1cyclictest24-21ksoftirqd/121:55:581
3425993811,6cyclictest91rcu_preempt00:16:061
3425993610,5cyclictest91rcu_preempt21:21:461
342599348,0cyclictest91rcu_preempt23:18:231
3425993433,0cyclictest24-21ksoftirqd/122:42:581
3425993320,4cyclictest24-21ksoftirqd/123:10:051
3425993314,6cyclictest24-21ksoftirqd/123:27:381
3425993228,2cyclictest24-21ksoftirqd/122:20:221
3425993223,4cyclictest24-21ksoftirqd/122:50:331
3425993128,2cyclictest23707-21/usr/sbin/munin20:00:111
3425993127,3cyclictest8712-21switchtime20:45:111
3425993127,3cyclictest17109-21diskmemload22:09:051
3425993122,6cyclictest221rcuc/119:25:121
3424993124,5cyclictest31762-21apache221:51:120
3425993028,1cyclictest24-21ksoftirqd/100:24:091
3425993027,2cyclictest14521-21apache_processe23:50:011
3425993027,2cyclictest1040-21hddtemp_smartct22:10:051
3425993026,3cyclictest17990-21irqstats00:35:081
3425993026,3cyclictest15324-21perl19:40:051
3425993026,3cyclictest12795-21vmstat20:55:131
3425993026,3cyclictest0-21swapper/122:45:031
3425993011,2cyclictest91rcu_preempt21:12:281
342499300,28cyclictest0-21swapper/022:20:270
3425992926,2cyclictest6481-21grep21:35:101
3425992926,2cyclictest22212-21memory21:15:081
3425992926,2cyclictest15716-21wget21:05:061
3425992926,2cyclictest13297-21ssh23:05:461
3425992925,3cyclictest24-21ksoftirqd/100:06:131
3425992925,3cyclictest13469-21grep22:25:101
3425992924,3cyclictest24-21ksoftirqd/122:33:251
342599287,2cyclictest91rcu_preempt23:30:541
3425992827,1cyclictest24-21ksoftirqd/122:36:231
3425992826,1cyclictest7317-21apache_processe19:20:041
3425992825,2cyclictest4989-21sed22:55:131
3425992825,2cyclictest31677-21sh21:26:471
3425992825,2cyclictest17109-21diskmemload22:15:261
3425992825,2cyclictest0-21swapper/119:55:041
3425992825,2cyclictest0-21swapper/100:10:571
3425992824,3cyclictest30618-21forks20:20:051
3425992824,3cyclictest24610-21/usr/sbin/munin20:05:051
3425992824,3cyclictest21826-21ssh23:59:191
3425992823,4cyclictest16297-21ssh21:48:231
3425992823,3cyclictest24-21ksoftirqd/122:00:381
3425992823,3cyclictest24-21ksoftirqd/120:40:101
3425992822,3cyclictest24-21ksoftirqd/123:23:541
3425992725,2cyclictest0-21swapper/120:15:011
3425992725,1cyclictest5214-21dump-pmu-power19:14:521
3425992724,2cyclictest9864-21df_inode00:25:031
3425992724,2cyclictest25267-21ssh00:03:211
3425992724,2cyclictest17109-21diskmemload23:00:541
3425992724,2cyclictest0-21swapper/120:35:051
3425992720,6cyclictest3172-21/usr/sbin/munin20:30:121
3425992713,13cyclictest0-21swapper/123:35:091
342599270,25cyclictest10967-21kworker/u4:221:30:491
3424992716,8cyclictest31788-21apache223:07:550
3031522718,4sleep0947-21sendmail-mta23:28:320
3425992624,2cyclictest12269-21ssh21:43:341
3425992623,2cyclictest13999-21sed21:00:091
3425992623,2cyclictest0-21swapper/123:39:541
3425992622,3cyclictest14425-21ntp_states00:30:101
3425992622,3cyclictest0-21swapper/119:16:541
3425992616,7cyclictest27066-21irqstats20:10:081
3424992625,1cyclictest0-21swapper/022:10:250
3424992610,8cyclictest0-21swapper/022:34:550
3424992610,1cyclictest0-21swapper/000:10:110
342599259,1cyclictest91rcu_preempt19:50:041
3425992522,2cyclictest0-21swapper/119:45:051
3425992521,3cyclictest11295-21seq20:54:321
3425992511,10cyclictest11630-21/usr/sbin/munin19:30:061
342499250,23cyclictest0-21swapper/023:50:120
3425992421,2cyclictest14135-21switchtime19:35:111
3425992411,2cyclictest91rcu_preempt20:25:111
3424992323,0cyclictest0-21swapper/020:08:400
3424992317,5cyclictest31788-21apache219:40:120
3424992311,8cyclictest26969-21ssh22:42:330
3424992310,6cyclictest0-21swapper/000:27:580
3424992310,3cyclictest0-21swapper/023:45:510
3424992310,3cyclictest0-21swapper/019:45:070
3424992310,2cyclictest0-21swapper/000:14:580
3424992215,6cyclictest31762-21apache222:33:150
3424992215,4cyclictest31762-21apache223:24:050
3424992212,3cyclictest0-21swapper/021:43:250
3424992210,9cyclictest30738-21ssh22:05:580
3424992210,6cyclictest0-21swapper/022:56:310
342499220,18cyclictest0-21swapper/000:20:050
342499213,15cyclictest0-21swapper/000:35:510
3424992112,4cyclictest0-21swapper/000:33:080
3424992110,6cyclictest0-21swapper/019:50:020
3424992110,3cyclictest0-21swapper/022:16:530
342499210,1cyclictest27094-21users21:20:140
221372210,0sleep00-21swapper/021:55:100
3424992014,4cyclictest7858-21ssh21:37:210
3424992011,3cyclictest0-21swapper/020:25:100
3424992011,1cyclictest10967-21kworker/u4:221:30:030
3424992010,8cyclictest0-21swapper/021:15:070
3424992010,6cyclictest0-21swapper/000:05:090
3424992010,3cyclictest0-21swapper/020:30:060
342499200,0cyclictest9537-21ssh23:43:170
342499195,9cyclictest0-21swapper/019:10:110
342499195,11cyclictest0-21swapper/019:20:040
342499193,9cyclictest0-21swapper/020:35:070
342499193,8cyclictest0-21swapper/020:15:030
3424991918,1cyclictest31762-21apache219:35:120
3424991918,0cyclictest100450irq/109-eth1-tx22:01:280
3424991916,2cyclictest81ktimersoftd/022:46:470
3424991911,6cyclictest3158-21df23:35:040
342499190,8cyclictest18138-21ssh21:10:090
342499186,6cyclictest0-21swapper/019:25:120
342499181,9cyclictest0-21swapper/023:00:040
3424991810,8cyclictest0-21swapper/019:55:100
3424991810,5cyclictest0-21swapper/023:34:390
3424991810,5cyclictest0-21swapper/023:10:040
3424991810,4cyclictest0-21swapper/022:28:470
3424991810,3cyclictest0-21swapper/021:00:130
3424991810,2cyclictest0-21swapper/019:15:100
3424991810,1cyclictest0-21swapper/019:30:070
3424991713,3cyclictest31788-21apache200:03:550
3424991713,2cyclictest0-21swapper/020:20:080
342499171,12cyclictest0-21swapper/023:16:190
3424991710,4cyclictest28367-21kworker/0:121:04:550
3424991710,3cyclictest0-21swapper/020:40:020
3424991710,2cyclictest0-21swapper/022:50:020
3424991615,1cyclictest0-21swapper/020:50:110
3424991611,4cyclictest100150irq/106-eth1-rx20:54:590
3424991610,4cyclictest0-21swapper/020:10:030
3424991610,1cyclictest0-21swapper/021:45:560
3424991510,2cyclictest0-21swapper/020:00:030
342499150,9cyclictest0-21swapper/020:45:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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