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2026-04-01 - 11:43
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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 Wed Apr 01, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
152742325294,21sleep10-21swapper/119:07:541
150682293266,17sleep20-21swapper/219:05:302
153772266235,21sleep00-21swapper/019:09:140
151572261232,19sleep30-21swapper/319:06:233
248412640,0sleep10-21swapper/121:20:511
271982600,0sleep10-21swapper/123:36:021
7592560,0sleep20-21swapper/222:23:552
186582550,0sleep10-21swapper/120:25:211
116112550,0sleep30-21swapper/322:30:133
102672520,0sleep310265-21grep21:50:213
298652390,0sleep20-21swapper/200:16:272
170552200,0sleep30-21swapper/321:16:203
23112190,0sleep00-21swapper/000:19:570
266782160,0sleep30-21swapper/322:20:113
108132160,0sleep20-21swapper/200:24:482
189662150,0sleep10-21swapper/121:17:471
132842150,0sleep20-21swapper/223:28:262
163512140,0sleep20-21swapper/221:54:562
156512140,0sleep00-21swapper/022:51:080
104432130,0sleep10-21swapper/100:05:051
8013290,0sleep30-21swapper/322:46:593
31977290,1sleep30-21swapper/321:25:163
2283290,1sleep20-21swapper/222:05:172
155569999,0cyclictest341ksoftirqd/322:00:013
155529996,2cyclictest658-21snmpd21:44:422
12026290,0sleep20-21swapper/222:10:412
31063280,0sleep10-21swapper/122:03:191
16631280,0sleep30-21swapper/322:51:513
155529986,1cyclictest0-21swapper/221:15:112
155529984,3cyclictest504-21dbus-daemon21:30:012
155529984,3cyclictest504-21dbus-daemon19:35:012
155479985,2cyclictest10222-21date00:05:001
155479983,4cyclictest504-21dbus-daemon00:35:001
155449981,4cyclictest20144-21munin-run00:29:590
2011270,0sleep30-21swapper/321:45:283
18763270,0sleep00-21swapper/023:12:100
155569973,3cyclictest275-21systemd-journal23:59:063
155569973,3cyclictest275-21systemd-journal00:25:223
155569973,1cyclictest0-21swapper/323:33:483
155529976,1cyclictest32321-21ssh23:39:542
155529974,2cyclictest504-21dbus-daemon21:30:182
155529974,2cyclictest504-21dbus-daemon21:30:182
155529973,2cyclictest275-21systemd-journal20:57:052
155479975,1cyclictest22-21ksoftirqd/120:00:001
155479974,2cyclictest22472-21munin-run23:15:011
155479973,3cyclictest275-21systemd-journal21:54:171
155479970,6cyclictest20829-21ls22:55:001
155479970,1cyclictest5064-21ssh21:47:461
155449975,1cyclictest12-21ksoftirqd/019:50:000
155449973,3cyclictest658-21snmpd23:02:230
155449973,3cyclictest275-21systemd-journal23:45:010
155449973,3cyclictest275-21systemd-journal21:23:250
155449973,3cyclictest19622-21apt-get20:30:120
155449973,3cyclictest16442-21sshd21:15:530
155449973,1cyclictest0-21swapper/022:41:120
155449972,3cyclictest275-21systemd-journal20:40:450
155449970,6cyclictest275-21systemd-journal20:27:040
155449970,5cyclictest275-21systemd-journal23:06:150
155449970,1cyclictest0-21swapper/023:30:130
9024260,0sleep10-21swapper/120:05:161
155569963,2cyclictest658-21snmpd23:50:423
155569963,2cyclictest658-21snmpd22:40:523
155569963,2cyclictest658-21snmpd00:04:173
155569963,2cyclictest560-21gdbus23:00:063
155569963,2cyclictest504-21dbus-daemon20:04:283
155569963,2cyclictest4440-21ssh22:25:213
155569963,2cyclictest34-21ksoftirqd/300:35:173
155569963,2cyclictest32524-21grep19:45:133
155569963,2cyclictest25418-21cat20:40:173
155569963,2cyclictest20638-21ssh22:15:513
155569963,2cyclictest15127-21ssh23:29:503
155569963,1cyclictest0-21swapper/323:10:183
155569963,1cyclictest0-21swapper/321:23:013
155569962,3cyclictest8652-21expr20:05:143
155569962,3cyclictest658-21snmpd23:35:443
155569962,3cyclictest658-21snmpd23:06:313
155569962,3cyclictest658-21snmpd21:38:473
155569962,3cyclictest658-21snmpd21:09:193
155569962,3cyclictest658-21snmpd21:01:013
155569962,3cyclictest658-21snmpd20:57:403
155569962,3cyclictest658-21snmpd20:53:303
155569962,3cyclictest658-21snmpd20:25:483
155569962,3cyclictest658-21snmpd20:24:033
155569962,3cyclictest658-21snmpd19:30:423
155569962,3cyclictest658-21snmpd19:14:283
155569962,3cyclictest658-21snmpd00:33:043
155569962,3cyclictest658-21snmpd00:21:073
155569962,3cyclictest658-21snmpd00:15:283
155569962,3cyclictest658-21snmpd00:10:033
155569962,3cyclictest275-21systemd-journal23:41:253
155569962,3cyclictest24474-21if_enp4s021:40:133
155569962,3cyclictest1-21systemd23:15:183
155569962,3cyclictest10560-21cat22:10:163
155569962,1cyclictest0-21swapper/323:47:453
155569962,1cyclictest0-21swapper/322:04:383
155569962,1cyclictest0-21swapper/321:10:163
155569961,4cyclictest1366-21find22:05:133
155569961,1cyclictest8443-21kworker/3:222:35:163
155569960,6cyclictest0-21swapper/300:09:133
155569960,2cyclictest26284-21/usr/sbin/munin20:45:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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