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2026-09-18 - 06:25
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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 Fri Sep 18, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15152297270,17sleep20-21swapper/219:09:092
15342285256,19sleep10-21swapper/119:09:241
14602268235,22sleep00-21swapper/019:08:260
12172260227,20sleep30-21swapper/319:05:363
196282620,0sleep10-21swapper/123:03:551
248882610,0sleep20-21swapper/223:45:372
161562580,0sleep00-21swapper/023:20:430
284372200,0sleep20-21swapper/223:09:212
283792190,0sleep20-21swapper/222:49:512
233952180,0sleep00-21swapper/022:46:000
15932160,0sleep20-21swapper/223:51:162
130092160,0sleep30-21swapper/321:21:543
269892150,0sleep30-21swapper/323:08:133
253002130,0sleep20-21swapper/223:26:272
164752130,0sleep20-21swapper/221:43:522
112912110,0sleep30-21swapper/323:37:533
131792100,0sleep00-21swapper/000:18:250
16989994,3cyclictest275-21systemd-journal21:48:092
29652280,0sleep10-21swapper/120:10:011
17029984,3cyclictest14415-21snmpd23:56:103
17029983,3cyclictest275-21systemd-journal21:00:013
16919983,3cyclictest275-21systemd-journal20:17:210
803270,0sleep20-21swapper/223:31:112
19366270,0sleep10-21swapper/123:42:421
17029974,2cyclictest275-21systemd-journal23:00:013
17029974,2cyclictest17117-21sshd22:03:493
17029973,3cyclictest275-21systemd-journal21:50:013
17029973,3cyclictest14415-21snmpd19:54:303
17029973,1cyclictest0-21swapper/300:36:383
17029971,1cyclictest5630-21apt-get23:15:113
16989974,2cyclictest504-21dbus-daemon19:24:082
16989974,2cyclictest275-21systemd-journal21:07:292
16989973,3cyclictest27048-21diskstats21:50:122
16989973,3cyclictest15636-21sshd23:00:492
16989973,3cyclictest14764-21grep23:20:162
16989973,3cyclictest14415-21snmpd20:11:592
16989973,3cyclictest14415-21snmpd19:14:112
16989973,2cyclictest275-21systemd-journal22:25:012
16989973,1cyclictest0-21swapper/221:28:262
16989972,2cyclictest31505-21ssh21:33:182
16989970,6cyclictest18533-21cut20:55:122
16989970,2cyclictest126952ntpq19:30:172
16969975,1cyclictest0-21swapper/121:50:561
16969974,3cyclictest27498-21kworker/1:223:10:461
16969974,3cyclictest27498-21kworker/1:223:10:461
16969973,4cyclictest20330-21idleruntime-cro22:45:001
16969973,3cyclictest14415-21snmpd22:50:051
16969971,1cyclictest0-21swapper/100:39:591
16969970,4cyclictest200032ssh00:22:201
16969970,1cyclictest32059-21ssh21:33:421
16919976,1cyclictest12-21ksoftirqd/023:39:590
16919975,1cyclictest12-21ksoftirqd/022:20:010
16919974,2cyclictest15940-21grep19:40:010
16919974,2cyclictest14415-21snmpd21:22:340
16919973,3cyclictest2793-11brltty00:05:590
16919973,3cyclictest14415-21snmpd23:30:240
16919973,3cyclictest14415-21snmpd23:07:150
16919973,3cyclictest0-21swapper/000:25:010
16919970,6cyclictest22283-21latency_hist21:05:010
16919970,6cyclictest0-21swapper/022:25:090
15950270,0sleep2271rcuc/222:22:082
32556260,0sleep20-21swapper/223:11:092
32556260,0sleep20-21swapper/223:11:092
20002260,0sleep20-21swapper/200:22:202
17029966,0cyclictest0-21swapper/322:35:513
17029966,0cyclictest0-21swapper/322:27:263
17029966,0cyclictest0-21swapper/300:25:183
17029963,2cyclictest7126-21fschecks_time20:30:133
17029963,2cyclictest663-21runrttasks23:50:543
17029963,2cyclictest663-21runrttasks23:03:043
17029963,2cyclictest2980-21diskstats21:55:143
17029963,2cyclictest28039-21sh23:28:343
17029963,2cyclictest2128-21ssh00:11:133
17029963,2cyclictest17521-21ssh22:23:193
17029963,2cyclictest17178-21grep00:20:213
17029963,2cyclictest14415-21snmpd20:43:163
17029963,2cyclictest13083-21fschecks_time22:40:163
17029963,2cyclictest12505-21sh21:40:473
17029963,1cyclictest0-21swapper/321:50:103
17029962,3cyclictest9508-21cat20:35:163
17029962,3cyclictest7805-21cat00:15:123
17029962,3cyclictest3388-21ssh22:54:123
17029962,3cyclictest30817-21df23:30:143
17029962,3cyclictest28741-21expr22:30:163
17029962,3cyclictest275-21systemd-journal23:12:423
17029962,3cyclictest275-21systemd-journal23:12:423
17029962,3cyclictest23155-21expr19:55:133
17029962,3cyclictest22863-21expr21:05:123
17029962,3cyclictest15315-21cat23:40:163
17029962,3cyclictest14415-21snmpd21:27:353
17029962,3cyclictest14415-21snmpd21:19:353
17029962,3cyclictest14415-21snmpd21:19:343
17029962,3cyclictest14415-21snmpd21:00:533
17029962,3cyclictest14415-21snmpd20:53:193
17029962,3cyclictest14415-21snmpd20:21:443
17029962,3cyclictest14415-21snmpd20:17:353
17029962,3cyclictest14415-21snmpd20:05:153
17029962,3cyclictest14415-21snmpd19:40:143
17029962,3cyclictest14415-21snmpd19:30:433
17029962,3cyclictest14415-21snmpd00:31:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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