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2026-04-27 - 19:52
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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 rackaslot8.osadl.org (updated Mon Apr 27, 2026 12:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237912323293,20sleep20-21swapper/207:08:262
238102274244,19sleep10-21swapper/107:08:411
239122267237,20sleep00-21swapper/007:09:520
236142260229,21sleep30-21swapper/307:06:103
306882700,0sleep20-21swapper/207:20:192
16002630,0sleep30-21swapper/312:16:353
78502620,0sleep00-21swapper/011:21:580
43642620,0sleep10-21swapper/111:39:571
184212600,0sleep20-21swapper/209:31:322
137562600,0sleep00-21swapper/010:08:070
52632580,0sleep10-21swapper/111:59:551
127992570,0sleep30-21swapper/312:04:223
254832560,1sleep30-21swapper/312:30:233
82032200,0sleep10-21swapper/111:22:151
139892180,0sleep10-21swapper/109:10:011
163902150,0sleep10-21swapper/109:50:141
290672140,0sleep20-21swapper/210:17:062
95392130,0sleep10-21swapper/111:42:291
238752130,0sleep20-21swapper/208:20:132
38142120,0sleep20-21swapper/211:58:482
129982120,0sleep20-21swapper/210:46:012
2404399102,2cyclictest29072-21apt07:20:010
240509997,1cyclictest28-21ksoftirqd/207:20:002
240459997,1cyclictest22-21ksoftirqd/107:15:011
4621280,0sleep10-21swapper/111:00:211
27080280,0sleep10-21swapper/111:53:061
240539980,7cyclictest19334-21ssh11:48:343
240459987,1cyclictest22-21ksoftirqd/110:15:011
240459987,1cyclictest22-21ksoftirqd/109:30:011
240459984,3cyclictest275-21systemd-journal10:54:491
240459983,3cyclictest275-21systemd-journal08:39:461
240459983,3cyclictest275-21systemd-journal08:02:361
28331270,0sleep00-21swapper/010:55:200
240539976,1cyclictest34-21ksoftirqd/309:10:003
240539974,2cyclictest13645-21diskmemload10:06:013
240539973,3cyclictest504-21dbus-daemon11:00:013
240539973,3cyclictest21665-11brltty07:19:143
240539972,3cyclictest275-21systemd-journal08:59:553
240539972,1cyclictest320512expr09:40:133
240539972,1cyclictest170782ssh11:27:383
240539972,1cyclictest170782ssh11:27:383
240539971,1cyclictest141rcu_preempt09:46:313
240539970,6cyclictest18981-21dump-pmu-power08:10:003
240539970,6cyclictest15586-21grep12:25:113
240509976,1cyclictest28-21ksoftirqd/211:10:012
240509975,1cyclictest28-21ksoftirqd/207:15:002
240509974,2cyclictest504-21dbus-daemon08:59:592
240509974,2cyclictest504-21dbus-daemon08:29:172
240509974,2cyclictest21665-11brltty09:56:022
240509973,3cyclictest658-21snmpd11:14:572
240509973,3cyclictest658-21snmpd10:01:372
240509973,3cyclictest275-21systemd-journal10:45:012
240509973,3cyclictest1090-21cron07:30:012
240509972,3cyclictest658-21snmpd10:58:122
240509971,2cyclictest28-21ksoftirqd/209:40:012
240509970,7cyclictest0-21swapper/211:52:292
240509970,3cyclictest201252ssh11:49:102
240459976,1cyclictest22-21ksoftirqd/107:40:011
240459974,2cyclictest3142-21ntpq10:40:181
240459974,2cyclictest275-21systemd-journal08:19:171
240459973,3cyclictest658-21snmpd08:14:551
240459973,3cyclictest504-21dbus-daemon10:20:011
240459973,3cyclictest504-21dbus-daemon09:18:051
240459973,3cyclictest32221-21diskstats09:40:131
240459973,3cyclictest275-21systemd-journal07:45:071
240459973,3cyclictest22640-21cat12:10:121
240459973,3cyclictest13632-21cron09:10:001
240459971,5cyclictest0-21swapper/110:45:121
240459971,5cyclictest0-21swapper/110:30:111
240439973,3cyclictest658-21snmpd09:42:330
240439973,3cyclictest275-21systemd-journal10:15:010
240439973,3cyclictest275-21systemd-journal09:20:000
240439973,3cyclictest13092-21grep07:55:150
3811260,0sleep10-21swapper/108:45:171
240539964,1cyclictest34-21ksoftirqd/308:30:003
240539963,2cyclictest9271-21sendmail_mailqu07:45:183
240539963,2cyclictest908-21dpkg10:20:013
240539963,2cyclictest7866-21ssh12:20:183
240539963,2cyclictest658-21snmpd10:35:023
240539963,2cyclictest3778-21cstates07:35:133
240539963,2cyclictest3593-21rm11:00:153
240539963,2cyclictest31730-21cpuspeed_turbos07:25:133
240539963,2cyclictest31596-21netstat08:35:153
240539963,2cyclictest3153-21ssh11:39:013
240539963,2cyclictest275-21systemd-journal08:24:173
240539963,2cyclictest24925-21cat07:10:153
240539963,2cyclictest24893-21hwlatdetect09:55:143
240539963,2cyclictest23649-21cstates09:35:133
240539963,2cyclictest23492-21kernelversion09:15:163
240539963,2cyclictest22213-21ssh11:11:003
240539963,2cyclictest20657-21chrt10:50:303
240539963,2cyclictest18954-21sh09:51:183
240539963,2cyclictest18326-21ssh09:11:593
240539963,2cyclictest1816-21sh11:57:153
240539963,2cyclictest16440-21rm10:10:013
240539963,2cyclictest11816-21sh11:05:143
240539963,1cyclictest0-21swapper/309:26:273
240539962,3cyclictest658-21snmpd12:38:263
240539962,3cyclictest658-21snmpd10:27:173
240539962,3cyclictest658-21snmpd08:45:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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