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2026-06-05 - 09:51
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Fri Jun 05, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2839621240,0sleep028398-21cat23:44:030
69712730,1sleep10-21swapper/123:15:071
2596027058,8sleep10-21swapper/119:05:291
2591626949,16sleep00-21swapper/019:05:010
327662670,0sleep10-21swapper/100:34:421
26458993910,3cyclictest91rcu_preempt23:54:081
26458993910,0cyclictest0-21swapper/123:42:011
26457993810,27cyclictest0-21swapper/023:55:430
26458993531,3cyclictest9448-21apache_processe19:48:571
26458993430,3cyclictest4618-21memory20:59:011
26458993330,2cyclictest26649-21hddtemp_smartct22:59:001
26458993330,2cyclictest11995-21memory19:54:011
26458993329,3cyclictest23715-21/usr/sbin/munin20:24:031
26458993328,4cyclictest15635-21ssh22:44:021
26458993312,4cyclictest91rcu_preempt21:26:571
26458993230,1cyclictest24936-21users00:24:081
26458993230,1cyclictest24849-21apache_processe20:28:571
26458993229,2cyclictest7650-21diskmemload23:04:011
26458993229,2cyclictest7650-21diskmemload21:16:001
26458993229,2cyclictest4012-21diskstats22:28:591
26458993229,2cyclictest24881-21apache_volume22:13:561
26458993229,2cyclictest24151-21ntp_states21:29:031
26458993229,2cyclictest21917-21grep20:19:041
26458993229,2cyclictest16715-21idleruntime-cro00:13:461
26458993229,2cyclictest10840-21runrttasks21:12:121
26458993228,3cyclictest28914-21diskstats20:38:571
26458993129,2cyclictest7650-21diskmemload22:37:141
26458993129,1cyclictest17418-21apache_processe22:03:571
26458993128,2cyclictest9748-21apache_volume21:53:581
26458993128,2cyclictest9290-21diskstats23:18:581
26458993128,2cyclictest7650-21diskmemload21:35:431
26458993128,2cyclictest26766-21apache_accesses20:33:571
26458993128,2cyclictest15687-21ssh23:27:271
26458993128,2cyclictest1430-21ssh22:24:081
26458993128,2cyclictest13580-21ssh22:41:051
26458993128,2cyclictest0-21swapper/121:48:381
26458993127,3cyclictest14685-21chrt20:00:091
26458993120,10cyclictest19251-21ssh00:17:121
26458993119,8cyclictest24-21ksoftirqd/121:40:451
26458993028,2cyclictest0-21swapper/121:19:021
26458993028,2cyclictest0-21swapper/100:29:201
26458993028,1cyclictest7533-21apache_processe19:43:561
26458993028,1cyclictest1770-21apache_processe19:28:561
26458993027,3cyclictest7650-21diskmemload22:56:191
26458993027,2cyclictest746-21missed_timers20:49:011
26458993027,2cyclictest28981-21grep23:44:071
26458993027,2cyclictest28956-21df22:18:571
26458993027,2cyclictest20676-21hddtemp_smartct23:33:591
26458993026,3cyclictest16729-21cstates23:28:571
26458993023,6cyclictest31343-21ntpq20:44:021
26458993023,1cyclictest24-21ksoftirqd/123:10:061
26458993010,2cyclictest0-21swapper/123:52:421
26458992927,2cyclictest0-21swapper/100:04:191
26458992927,1cyclictest15751-21irqstats20:04:021
26458992926,2cyclictest7650-21diskmemload22:12:131
26458992926,2cyclictest28398-21apache_processe19:13:561
26458992926,2cyclictest0-21swapper/120:14:041
26458992926,2cyclictest0-21swapper/120:09:011
26458992926,2cyclictest0-21swapper/119:18:581
26458992925,3cyclictest0-21swapper/122:49:201
26458992923,5cyclictest8685-21ssh21:51:471
26458992825,2cyclictest915-21chrt19:24:051
26458992825,2cyclictest8673-21sh00:00:451
26458992819,9cyclictest0-21swapper/119:35:361
26458992815,5cyclictest24-21ksoftirqd/100:20:111
26457992810,0cyclictest0-21swapper/000:23:400
2645799280,24cyclictest7650-21diskmemload00:28:020
26458992723,3cyclictest0-21swapper/119:39:011
26458992710,0cyclictest0-21swapper/121:59:421
26457992718,5cyclictest23763-21apache223:02:540
2645799270,1cyclictest12959-21rm22:39:390
26457992619,4cyclictest100450irq/109-eth1-tx22:33:470
26458992523,2cyclictest0-21swapper/119:08:561
26458992511,10cyclictest0-21swapper/120:53:581
2645799250,23cyclictest27231-21/usr/sbin/munin21:34:050
26457992422,1cyclictest0-21swapper/019:28:490
26457992410,6cyclictest0-21swapper/000:33:480
26457992410,4cyclictest0-21swapper/022:27:040
26458992321,2cyclictest0-21swapper/121:03:571
26457992323,0cyclictest0-21swapper/023:53:370
26457992322,0cyclictest7-21ksoftirqd/000:29:040
26457992322,0cyclictest0-21swapper/022:01:030
26457992317,5cyclictest23763-21apache219:46:240
2645799228,9cyclictest0-21swapper/022:13:560
2645799226,11cyclictest0-21swapper/020:13:580
26457992221,1cyclictest585-21gmain21:10:560
26457992216,5cyclictest802-21apache200:04:140
26457992214,6cyclictest23776-21apache222:29:360
2645799220,9cyclictest0-21swapper/020:49:030
26457992119,1cyclictest21590-21sed23:34:060
26457992112,4cyclictest0-21swapper/021:44:480
26457992110,8cyclictest7566-21kworker/u4:121:57:410
26457992110,6cyclictest0-21swapper/022:57:490
26457992110,6cyclictest0-21swapper/022:18:590
26457992110,4cyclictest0-21swapper/020:54:090
26457992110,2cyclictest0-21swapper/023:12:130
1661322110,6sleep00-21swapper/022:44:380
2645799203,13cyclictest18764-21kworker/u4:021:39:050
2645799202,10cyclictest0-21swapper/020:09:050
26457992019,1cyclictest0-21swapper/019:08:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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