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2026-06-20 - 08:36
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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 Sat Jun 20, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132242291266,16sleep10-21swapper/119:05:301
132462279248,21sleep20-21swapper/219:05:432
132312264233,20sleep00-21swapper/019:05:340
135702259227,22sleep30-21swapper/319:09:543
199052640,0sleep10-21swapper/123:15:171
35642630,0sleep00-21swapper/021:48:260
223832590,0sleep30-21swapper/319:25:183
295622570,0sleep20-21swapper/223:20:582
12762560,0sleep20-21swapper/221:46:402
48732550,0sleep10-21swapper/121:30:011
200622550,0sleep30-21swapper/322:36:263
12602550,0sleep30-21swapper/300:02:443
4022540,0sleep10-21swapper/121:46:031
186892220,0sleep10-21swapper/120:30:151
149142200,0sleep10-21swapper/122:14:501
257742150,0sleep30-21swapper/321:22:383
256612150,0sleep20-21swapper/221:41:552
198112150,0sleep20-21swapper/223:54:532
1370099108,2cyclictest34-21ksoftirqd/300:00:013
136969997,2cyclictest28-21ksoftirqd/219:15:022
136899992,4cyclictest19995-21basename23:55:000
136949980,2cyclictest23360-21ssh22:58:171
136899983,3cyclictest275-21systemd-journal22:26:290
136899982,4cyclictest15163-21idleruntime-cro22:15:020
136899982,3cyclictest6681-21munin-run20:05:000
136899981,4cyclictest18745-21plymouth19:20:010
6436270,0sleep00-21swapper/023:26:410
31736270,0sleep10-21swapper/119:45:181
137009976,1cyclictest34-21ksoftirqd/323:20:013
137009976,1cyclictest34-21ksoftirqd/322:10:013
137009975,2cyclictest34-21ksoftirqd/300:20:003
137009975,1cyclictest34-21ksoftirqd/322:15:013
137009974,2cyclictest658-21snmpd22:00:553
137009973,3cyclictest658-21snmpd20:05:333
137009973,3cyclictest275-21systemd-journal20:26:113
137009973,1cyclictest0-21swapper/321:52:293
137009970,7cyclictest0-21swapper/322:55:203
137009970,7cyclictest0-21swapper/300:13:383
137009970,3cyclictest275-21systemd-journal00:22:073
136969974,2cyclictest491-21systemd-logind00:27:082
136969973,3cyclictest658-21snmpd22:35:452
136969973,3cyclictest14626-21/usr/sbin/munin21:55:162
136969970,1cyclictest0-21swapper/223:00:172
136969970,1cyclictest0-21swapper/223:00:172
136949973,3cyclictest658-21snmpd20:35:281
136949973,3cyclictest15610-21apt-get22:15:121
136949973,2cyclictest275-21systemd-journal22:49:501
136899973,3cyclictest504-21dbus-daemon20:45:000
136899973,3cyclictest275-21systemd-journal21:44:370
136899973,1cyclictest0-21swapper/023:38:360
137009966,0cyclictest0-21swapper/300:35:243
137009963,2cyclictest9854-21uname20:10:153
137009963,2cyclictest7880-21sh21:31:023
137009963,2cyclictest658-21snmpd23:32:043
137009963,2cyclictest658-21snmpd22:33:593
137009963,2cyclictest658-21snmpd21:25:113
137009963,2cyclictest5202-21taskset00:05:143
137009963,2cyclictest4843-21ntpq23:45:153
137009963,2cyclictest29049-21sh23:01:143
137009963,2cyclictest29049-21sh23:01:143
137009963,2cyclictest26159-21rm21:42:183
137009963,2cyclictest18042-21threads19:15:203
137009963,2cyclictest15910-21ssh21:16:283
137009963,2cyclictest15216-21awk21:35:203
137009963,2cyclictest11621-21systemctl23:10:173
137009963,2cyclictest0-21swapper/322:20:483
137009963,1cyclictest0-21swapper/321:57:003
137009962,3cyclictest658-21snmpd20:44:283
137009962,3cyclictest658-21snmpd20:38:323
137009962,3cyclictest658-21snmpd19:55:123
137009962,3cyclictest658-21snmpd19:32:593
137009962,3cyclictest658-21snmpd19:24:573
137009962,3cyclictest658-21snmpd00:32:183
137009962,3cyclictest3305-21sshd22:26:373
137009962,3cyclictest2935-21cat23:05:153
137009962,3cyclictest2519-21cat21:05:153
137009962,3cyclictest19833-21expr23:35:123
137009962,1cyclictest0-21swapper/321:49:103
137009961,3cyclictest275-21systemd-journal22:18:363
137009960,0cyclictest0-21swapper/323:50:113
137009960,0cyclictest0-21swapper/323:21:333
137009960,0cyclictest0-21swapper/322:40:473
137009960,0cyclictest0-21swapper/321:11:313
137009960,0cyclictest0-21swapper/300:25:253
136969966,0cyclictest0-21swapper/223:59:282
136969966,0cyclictest0-21swapper/222:17:282
136969963,2cyclictest9680-21sh22:10:552
136969963,2cyclictest8948-21ssh00:07:122
136969963,2cyclictest6906-21ssh21:10:592
136969963,2cyclictest6848-21awk21:50:152
136969963,2cyclictest663-21runrttasks21:26:182
136969963,2cyclictest504-21dbus-daemon22:05:382
136969963,2cyclictest4225-21sh22:46:232
136969963,2cyclictest29344-21ssh22:42:112
136969963,2cyclictest275-21systemd-journal23:35:372
136969963,2cyclictest275-21systemd-journal21:22:372
136969963,2cyclictest21183-21ssh00:15:042
136969963,2cyclictest20194-21ssh22:55:512
136969963,2cyclictest11785-21sh22:50:482
136969962,3cyclictest658-21snmpd21:04:342
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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