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2026-08-09 - 15:26
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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 Sun Aug 09, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
167202304275,19sleep20-21swapper/207:07:232
167452300270,20sleep10-21swapper/107:07:441
165872283229,17sleep00-21swapper/007:05:420
167312263229,22sleep30-21swapper/307:07:333
83722680,1sleep10-21swapper/109:10:151
263252650,0sleep00-21swapper/012:15:130
44442640,0sleep10-21swapper/112:01:501
295072610,0sleep00-21swapper/010:01:210
24782610,0sleep30-21swapper/312:20:143
174662600,0sleep00-21swapper/010:33:280
124872580,0sleep20-21swapper/209:51:172
89492200,0sleep00-21swapper/010:47:330
317782180,0sleep20-21swapper/211:40:012
318022170,0sleep20-21swapper/209:44:012
258372170,0sleep10-21swapper/111:16:371
147382150,0sleep00-21swapper/010:12:060
119812140,0sleep00-21swapper/012:06:130
1705699135,7cyclictest331rcuc/307:30:153
1705299123,6cyclictest6617-21ssh10:07:162
1705299123,6cyclictest4490-21ssh09:27:092
1705299123,6cyclictest4414-21ssh12:21:032
1705299123,6cyclictest18060-21ssh09:55:092
1705299123,6cyclictest12069-21ssh12:25:302
1705299123,4cyclictest31164-21tune2fs08:50:142
1705299123,3cyclictest26236-21sh10:58:012
106832120,0sleep110684-21sh11:08:041
1705299114,5cyclictest19183-21ssh11:51:072
1705299114,3cyclictest6603-21sh11:44:172
1705299113,6cyclictest5606-21ssh09:47:252
1705299113,6cyclictest32339-21ssh11:59:462
1705299113,5cyclictest7585-21ssh10:46:312
1705299113,5cyclictest28690-21sh09:22:152
1705299113,5cyclictest12793-21ssh11:47:372
1705299113,4cyclictest7512-21sh12:04:112
1705299113,4cyclictest30060-21basename11:00:142
1705299113,4cyclictest13221-21rm09:32:312
1705299113,3cyclictest19135-21ssh10:53:572
1705299112,6cyclictest26129-21ssh10:19:252
1705299107,2cyclictest5221-21apt-get09:05:012
1705299103,5cyclictest7241-21diskmemload12:37:292
1705299103,5cyclictest19410-21ssh09:35:522
1705299103,4cyclictest22528-21ssh11:34:282
1705299103,3cyclictest7645-21ssh09:10:092
1705299103,3cyclictest3419-21interrupts09:00:172
1705299103,3cyclictest17908-21if_enp4s007:10:172
1705299103,3cyclictest16475-21ssh10:32:432
1705299103,3cyclictest15126-21cpu08:15:122
1705299103,3cyclictest1226-21sh10:04:312
1705299103,3cyclictest10512-21rm10:29:312
1705299103,2cyclictest9495-21df12:05:132
1705299103,2cyclictest7241-21diskmemload12:17:562
1705299103,2cyclictest6861-21ssh11:25:012
1705299103,2cyclictest32208-21ssh10:41:572
1705299103,2cyclictest20486-21ssh11:14:102
1705299103,2cyclictest12284-21chrt11:09:182
1705299102,6cyclictest25211-21ssh10:38:012
1705299102,5cyclictest24222-21ssh12:14:112
1705299102,5cyclictest24222-21ssh12:14:112
1705299102,4cyclictest21944-21chrt09:18:292
1705299101,6cyclictest0-21swapper/211:21:572
1704399109,1cyclictest12-21ksoftirqd/010:25:000
170529996,2cyclictest21533-21latency_hist08:30:012
170529995,3cyclictest8763-21cat08:00:142
170529995,3cyclictest504-21dbus-daemon08:45:002
170529995,3cyclictest28869-21cat10:20:202
170529995,3cyclictest22062-21cron07:20:012
170529995,3cyclictest12636-21perf08:10:012
170529993,4cyclictest5377-21taskset07:52:072
170529993,2cyclictest658-21snmpd08:21:562
170529993,2cyclictest658-21snmpd08:21:562
170529993,2cyclictest25360-21ssh11:16:152
170529993,2cyclictest20261-21ssh12:30:262
170529992,5cyclictest13506-21ssh10:11:082
30395280,0sleep30-21swapper/312:36:313
23242280,0sleep00-21swapper/009:57:560
170569984,3cyclictest275-21systemd-journal09:18:553
170569980,2cyclictest141rcu_preempt08:20:123
170569980,2cyclictest141rcu_preempt08:20:123
170529986,2cyclictest22354-21apt-get07:20:122
170529985,3cyclictest0-21swapper/207:30:152
170529984,3cyclictest6433-21head07:55:152
170529984,3cyclictest448-21apt08:55:112
170529984,3cyclictest32255-21which07:40:162
170529984,3cyclictest28528-21grep08:45:132
170529984,3cyclictest24549-21acpi07:25:112
170529984,3cyclictest24378-21cstates08:35:142
170529984,3cyclictest23657-21chrt08:33:532
170529984,3cyclictest1613-21tr07:45:132
170529984,3cyclictest13169-21cat08:10:132
170529982,2cyclictest29287-21seq07:35:092
170479986,1cyclictest7514-21df11:25:131
11248280,0sleep00-21swapper/009:11:420
170569976,1cyclictest7241-21diskmemload09:20:563
170569973,2cyclictest275-21systemd-journal11:52:313
170569972,4cyclictest0-21swapper/310:59:133
170569970,7cyclictest0-21swapper/312:09:353
170479973,3cyclictest658-21snmpd07:31:081
170479973,3cyclictest504-21dbus-daemon12:25:321
170479973,2cyclictest674-21lldpd12:31:011
170479972,3cyclictest3423-21munin-run07:50:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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