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2026-04-25 - 00:48
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackbslot7.osadl.org (updated Fri Apr 24, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8427212911,91sleep07886-21/usr/sbin/munin06:58:550
8550212310,30sleep30-21swapper/306:59:023
9298212218,71sleep29309-21ls07:02:362
9379991103,68cyclictest27177-21apt-get11:07:522
9370991103,32cyclictest17675-21mailstats09:04:000
9370991094,45cyclictest31934-21/usr/sbin/munin09:27:540
93709910854,48cyclictest16017-21diskmemload11:29:300
9370991074,30cyclictest1583-21cat11:18:060
9370991065,25cyclictest13485-21latency_hist12:32:330
9370991064,28cyclictest352-21runrttasks07:30:150
9370991064,28cyclictest352-21runrttasks07:30:150
9370991063,37cyclictest30852-21ssh12:07:450
9370991063,31cyclictest29881-21/usr/sbin/munin10:17:580
93709910551,47cyclictest5323-21kernelversion08:27:560
9370991053,38cyclictest2209-21ssh09:32:410
93709910351,46cyclictest23061-21ssh09:12:560
9379991027,67cyclictest4095-21apt-get12:17:462
9370991024,29cyclictest352-21runrttasks11:57:090
9370991023,25cyclictest4611-21/usr/sbin/munin12:18:180
9370991014,36cyclictest6819-21fschecks_count08:32:530
9370991013,37cyclictest19842-21fschecks_count09:07:530
9370991013,37cyclictest19842-21fschecks_count09:07:530
9370991013,29cyclictest28626-21ssh12:03:060
9370991007,22cyclictest19221-21/usr/sbin/munin11:47:560
9370991007,22cyclictest19221-21/usr/sbin/munin11:47:560
9370991003,43cyclictest9485-21runrttasks09:43:340
9370991003,42cyclictest14232-21/usr/sbin/munin09:52:410
9370991003,32cyclictest7724-21cpuspeed12:22:470
9370991003,32cyclictest7724-21cpuspeed12:22:470
9370991002,34cyclictest21069-21latency_hist07:37:330
9370991002,34cyclictest21069-21latency_hist07:37:330
93709910015,16cyclictest0-21swapper/010:07:410
937099993,37cyclictest13337-21tune2fs08:52:530
937099993,34cyclictest352-21runrttasks11:37:190
937099993,34cyclictest352-21runrttasks11:37:190
937099993,32cyclictest27155-21/usr/sbin/munin11:08:470
937099993,31cyclictest26928-21latency_hist11:07:340
937099993,22cyclictest15496-21grep10:47:590
937099992,40cyclictest4628-21rm11:23:050
9370999837,53cyclictest0-21swapper/012:14:150
937099983,34cyclictest24822-21/usr/sbin/munin11:57:540
937099983,33cyclictest352-21runrttasks07:42:350
937099983,33cyclictest352-21runrttasks07:42:350
937099983,33cyclictest26567-21grep10:12:530
937099983,33cyclictest13896-21/usr/sbin/munin11:38:090
937099983,32cyclictest28304-21modprobe09:22:310
937099982,36cyclictest28605-21cat07:58:070
9370999816,31cyclictest947-21runrttasks10:23:070
937099974,32cyclictest8835-21cat08:38:050
937099974,30cyclictest352-21runrttasks08:12:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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