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2026-04-05 - 21:41
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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 Apr 05, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
112312283257,17sleep10-21swapper/107:07:231
112582277246,20sleep20-21swapper/207:07:442
112742273239,23sleep30-21swapper/307:07:573
111932261234,18sleep00-21swapper/007:06:540
218312600,0sleep20-21swapper/210:20:122
56342580,0sleep30-21swapper/311:09:063
211802580,0sleep10-21swapper/107:30:011
182032570,1sleep20-21swapper/208:35:012
108412570,0sleep20-21swapper/210:32:502
264652530,0sleep20-21swapper/212:20:132
125652210,0sleep00-21swapper/008:20:170
65952200,0sleep00-21swapper/010:10:210
306092190,0sleep20-21swapper/210:45:072
284892180,0sleep10-21swapper/108:55:181
138782150,0sleep30-21swapper/311:52:593
266582140,0sleep20-21swapper/210:03:312
241642140,0sleep20-21swapper/207:35:152
122052140,0sleep20-21swapper/210:14:362
290322130,0sleep30-21swapper/312:21:143
21322290,3sleep012-21ksoftirqd/007:30:120
19095290,0sleep20-21swapper/211:36:082
115739983,4cyclictest0-21swapper/312:10:113
115699985,2cyclictest28-21ksoftirqd/209:45:012
115699982,4cyclictest22493-21idleruntime-cro08:45:012
115699982,4cyclictest16601-21awk07:20:012
115649983,3cyclictest275-21systemd-journal07:22:091
115649983,2cyclictest501-21in:imuxsock12:05:001
3642270,1sleep00-21swapper/008:00:190
24440270,0sleep30-21swapper/311:00:163
12905270,0sleep20-21swapper/209:15:452
115739976,1cyclictest34-21ksoftirqd/309:00:013
115739973,3cyclictest658-21snmpd07:34:523
115739973,3cyclictest504-21dbus-daemon10:50:183
115739972,3cyclictest275-21systemd-journal08:50:013
115699974,2cyclictest275-21systemd-journal10:59:092
115699972,2cyclictest4525-21awk10:10:012
115699972,2cyclictest28-21ksoftirqd/209:20:192
115699972,2cyclictest15804-21perf08:30:012
115699970,4cyclictest14487-21munin-run10:55:012
115649974,2cyclictest2082-21munin-run08:00:001
115649973,3cyclictest29708-21sensors_temp09:45:191
115649973,3cyclictest275-21systemd-journal09:31:541
115649973,3cyclictest23917-21diskstats07:35:141
115649973,3cyclictest16611-21ntpq11:15:161
115649973,3cyclictest13240-21grep07:10:201
115649973,3cyclictest13240-21grep07:10:201
115649973,2cyclictest275-21systemd-journal08:28:401
115649973,2cyclictest1-21systemd11:50:191
115649973,1cyclictest0-21swapper/111:35:131
115619974,2cyclictest25642-21turbostat12:19:590
115619973,3cyclictest32381-21cron11:45:000
115619973,3cyclictest28451-21ntpq08:55:170
115619973,3cyclictest275-21systemd-journal09:05:020
115619972,4cyclictest18011-21latency_hist08:35:000
115619970,7cyclictest0-21swapper/010:30:160
115619970,4cyclictest7554-21dump-pmu-power11:30:000
115739966,0cyclictest0-21swapper/311:56:593
115739966,0cyclictest0-21swapper/310:25:133
115739963,2cyclictest9994-21ssh10:12:523
115739963,2cyclictest658-21snmpd08:12:353
115739963,2cyclictest504-21dbus-daemon11:10:193
115739963,2cyclictest504-21dbus-daemon10:32:063
115739963,2cyclictest30191-21ntp_states10:05:173
115739963,2cyclictest30125-21diskstats09:00:133
115739963,2cyclictest2605-21sh11:45:393
115739963,2cyclictest25781-21ssh10:02:503
115739963,2cyclictest21417-21sendmail_mailst09:40:193
115739963,2cyclictest19703-21ssh09:20:133
115739963,2cyclictest18404-21ssh11:35:363
115739963,2cyclictest1663-21ssh10:46:353
115739963,2cyclictest16139-21sh10:35:313
115739963,2cyclictest13737-21sh07:15:013
115739963,2cyclictest13737-21sh07:15:013
115739963,2cyclictest10383-21ssh11:30:493
115739962,3cyclictest658-21snmpd12:26:523
115739962,3cyclictest658-21snmpd12:03:483
115739962,3cyclictest658-21snmpd11:19:023
115739962,3cyclictest658-21snmpd10:55:423
115739962,3cyclictest658-21snmpd09:29:043
115739962,3cyclictest658-21snmpd09:10:343
115739962,3cyclictest658-21snmpd08:40:543
115739962,3cyclictest658-21snmpd08:18:523
115739962,3cyclictest658-21snmpd07:55:143
115739962,3cyclictest658-21snmpd07:40:023
115739962,3cyclictest658-21snmpd07:21:123
115739962,3cyclictest5540-21cat08:05:163
115739962,3cyclictest30780-21grep07:50:143
115739962,3cyclictest3051-21seq11:26:333
115739962,3cyclictest29371-21ntpq09:45:163
115739962,3cyclictest25563-21cat08:50:123
115739962,3cyclictest20055-21systemctl12:35:173
115739962,3cyclictest14484-21cat08:25:143
115739962,3cyclictest13189-21awk10:15:103
115739962,3cyclictest11676-21cat08:20:123
115739962,3cyclictest11013-21diskstats09:15:103
115739962,3cyclictest10944-21cat12:30:143
115739962,2cyclictest275-21systemd-journal07:38:363
115739962,1cyclictest0-21swapper/312:08:213
115739962,1cyclictest0-21swapper/311:41:553
115739962,1cyclictest0-21swapper/310:20:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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