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2026-09-22 - 23:27
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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 100 highest latencies:
System rackeslot8.osadl.org (updated Tue Sep 22, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
84951121420,1sleep10-21swapper/110:00:161
9119342550,8sleep2911940-21irqcore10:40:152
6876792370,10sleep1687684-21head08:05:161
614683992618,6cyclictest887370-21sleep10:25:003
614683992618,6cyclictest887370-21sleep10:25:003
61468399221,17cyclictest635591-21taskset07:20:583
61468399220,7cyclictest777940-21turbostat09:15:003
61468399210,14cyclictest9413382sleep310:58:123
614683992017,1cyclictest0-21swapper/309:27:343
61468399201,14cyclictest744190-21taskset08:45:263
61468399201,14cyclictest1083078-21chrt12:30:113
61468399191,6cyclictest6859612sleep308:00:223
614683991916,1cyclictest0-21swapper/311:20:003
61468399191,15cyclictest718981-21taskset08:28:353
61468399191,15cyclictest718981-21taskset08:28:353
61468399191,14cyclictest994622-21taskset11:30:223
61468399191,14cyclictest988619-21taskset11:29:033
61468399191,14cyclictest878603-21taskset10:17:423
61468399191,14cyclictest807932-21taskset09:31:363
61468399191,14cyclictest680398-21taskset07:56:453
61468399191,14cyclictest1079177-21taskset12:25:183
61468399190,15cyclictest979941-21taskset11:21:403
61468399184,7cyclictest10035782sleep311:37:123
61468399181,14cyclictest964982-21taskset11:13:423
61468399181,14cyclictest917390-21taskset10:41:443
61468399181,14cyclictest659387-21chrt07:40:173
61468399181,14cyclictest0-21swapper/312:00:143
61468399181,14cyclictest0-21swapper/311:00:123
61468399181,13cyclictest956126-21taskset11:05:413
61468399181,13cyclictest864188-21taskset10:10:133
61468399181,13cyclictest831120-21taskset09:45:433
61468399181,13cyclictest763760-21taskset09:04:303
61468399181,13cyclictest750822-21taskset08:52:363
61468399181,13cyclictest673968-21taskset07:51:113
61468399181,13cyclictest654775-21taskset07:37:003
61468399181,13cyclictest648759-21chrt07:35:003
61468399181,13cyclictest629307-21taskset07:17:533
61468399181,13cyclictest1057785-21taskset12:10:483
61468399181,13cyclictest0-21swapper/309:50:163
61468399181,13cyclictest0-21swapper/309:20:143
61468399181,12cyclictest725059-21taskset08:30:283
61468399180,14cyclictest699852-21turbostat08:15:003
61468399175,9cyclictest700090-21taskset08:15:043
61468399175,9cyclictest700090-21taskset08:15:043
61468399174,7cyclictest8937642sleep310:26:133
614683991714,1cyclictest0-21swapper/309:35:183
61468399171,13cyclictest903207-21taskset10:35:023
61468399171,13cyclictest846795-21taskset09:56:053
61468399171,13cyclictest769781-21taskset09:05:303
61468399171,13cyclictest757152-21taskset08:57:173
61468399171,13cyclictest0-21swapper/312:35:113
61468399171,13cyclictest0-21swapper/312:20:113
61468399171,13cyclictest0-21swapper/311:55:123
61468399171,13cyclictest0-21swapper/310:50:183
61468399171,13cyclictest0-21swapper/310:45:123
61468399171,13cyclictest0-21swapper/310:05:133
61468399171,13cyclictest0-21swapper/309:40:113
61468399171,13cyclictest0-21swapper/308:20:113
61468399171,12cyclictest784164-21taskset09:15:463
61468399171,12cyclictest687373-21taskset08:05:153
61468399171,12cyclictest667665-21taskset07:46:303
61468399171,12cyclictest642025-21taskset07:26:383
61468399171,12cyclictest1059660-21chrt12:15:123
61468399171,12cyclictest1012809-21chrt11:45:133
61468399171,12cyclictest0-21swapper/312:05:133
61468399171,12cyclictest0-21swapper/311:50:153
61468399171,12cyclictest0-21swapper/310:30:163
61468399171,12cyclictest0-21swapper/308:40:133
61468399170,13cyclictest731565-21taskset08:36:573
61468399170,13cyclictest620657-21taskset07:10:363
61468399161,12cyclictest0-21swapper/311:40:123
61468399161,12cyclictest0-21swapper/310:00:133
9814912150,4sleep1981502-21ssh11:25:121
8615972150,11sleep0861659-21ntpq10:05:210
6742742151,5sleep2674357-21sed07:55:002
8484832141,10sleep2848243-21sendmail-msp10:00:032
8408892141,10sleep1840951-21/usr/sbin/munin09:55:161
9188612133,6sleep2862495-21kworker/u16:2+xprtiod10:45:122
8853822130,9sleep0885551-21/usr/sbin/munin10:20:300
8853822130,9sleep0885551-21/usr/sbin/munin10:20:290
8721192130,6sleep0872240-21fw_packets10:15:170
8090782130,4sleep1706206-21kworker/u16:1+xprtiod09:34:481
7389072131,8sleep0739222-21irqcore08:45:170
10336152131,9sleep11033656-21ntpq11:55:221
9958612121,8sleep2995865-21ssh11:32:262
8239402120,9sleep0823946-21ssh09:42:370
8234192121,8sleep2816960-21sendmail-msp09:41:062
7503342120,1sleep20-21swapper/208:50:272
7323742123,6sleep1731864-21sendmail-msp08:40:161
6486152120,8sleep2648758-21wc07:35:002
61468399121,9cyclictest0-21swapper/307:10:013
10048732121,5sleep21004635-21sendmail-msp11:40:042
9436582110,2sleep0151ktimers/011:00:160
8326252110,7sleep2832825-21latency_hist09:50:002
8251142111,5sleep0825155-21ssh09:45:130
8010232110,3sleep00-21swapper/009:29:100
7705152110,8sleep1770666-21/usr/sbin/munin09:10:141
6989652111,7sleep0698996-21ntpq08:10:260
10501772110,4sleep10-21swapper/112:06:131
10117102110,2sleep10-21swapper/111:42:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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