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2026-01-08 - 14:33
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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 all highest latencies:
System rackaslot8.osadl.org (updated Thu Jan 08, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276262307275,21sleep20-21swapper/219:09:492
276362271221,41sleep10-21swapper/119:09:561
276102261232,19sleep30-21swapper/319:09:383
275922261230,21sleep00-21swapper/019:09:220
181202650,0sleep20-21swapper/223:20:132
184002520,0sleep00-21swapper/023:57:510
56252160,0sleep10-21swapper/121:40:041
17612150,0sleep10-21swapper/122:33:471
325912140,0sleep10-21swapper/123:10:151
60572130,0sleep10-21swapper/100:09:491
186452130,0sleep30-21swapper/322:25:013
2775299129,2cyclictest22-21ksoftirqd/119:15:011
253612120,0sleep125345-21munin-run23:25:001
243082120,0sleep10-21swapper/122:09:441
2775299119,1cyclictest22-21ksoftirqd/100:00:001
2776399107,2cyclictest34-21ksoftirqd/323:20:013
277589992,4cyclictest9908-21munin-run19:40:022
277589991,0cyclictest141rcu_preempt22:53:352
277639987,1cyclictest34-21ksoftirqd/322:35:003
277639986,1cyclictest3920-21apt-get22:35:113
277639985,2cyclictest34-21ksoftirqd/300:00:013
277639983,4cyclictest658-21snmpd22:57:153
277589987,1cyclictest271rcuc/223:04:442
277589985,2cyclictest29613-21apt-get21:35:102
277589981,6cyclictest5235-21awk23:50:162
277589980,5cyclictest26960-21ssh23:44:392
277589980,5cyclictest10976-21ssh23:15:502
277489984,3cyclictest275-21systemd-journal23:00:350
10798280,3sleep012-21ksoftirqd/020:50:190
6330270,3sleep228-21ksoftirqd/221:21:132
277639976,1cyclictest34-21ksoftirqd/319:35:013
277639976,1cyclictest34-21ksoftirqd/300:15:003
277639974,2cyclictest34-21ksoftirqd/320:05:023
277639974,2cyclictest30549-21cut22:50:143
277639974,2cyclictest275-21systemd-journal21:36:363
277639973,3cyclictest674-21lldpd22:04:493
277639973,3cyclictest663-21runrttasks23:29:353
277639973,2cyclictest275-21systemd-journal21:17:113
277639972,4cyclictest11555-21ssh21:25:013
277639972,3cyclictest275-21systemd-journal19:42:233
277589974,2cyclictest76-21kswapd023:25:112
277589973,3cyclictest658-21snmpd20:03:222
277589973,3cyclictest504-21dbus-daemon19:30:012
277589973,3cyclictest275-21systemd-journal00:37:362
277589973,2cyclictest275-21systemd-journal21:56:372
277589972,4cyclictest29983-21idleruntime-cro19:15:002
277589972,3cyclictest28-21ksoftirqd/222:40:232
277589972,3cyclictest0-21swapper/221:16:082
277589971,4cyclictest32156-21ssh00:24:382
277589971,4cyclictest28-21ksoftirqd/222:11:512
277589971,4cyclictest28-21ksoftirqd/221:40:052
277589971,4cyclictest11788-21ssh22:58:142
277589971,3cyclictest28-21ksoftirqd/221:46:202
277589971,3cyclictest28-21ksoftirqd/221:46:192
277589971,2cyclictest25028-21sendmail_mailst20:10:172
277589971,2cyclictest1303-21seq00:06:192
277589971,1cyclictest13520-21wc21:25:192
277589970,5cyclictest29115-21ssh21:53:272
277589970,5cyclictest25584-21sh21:32:382
277589970,5cyclictest24666-21ssh00:01:042
277589970,5cyclictest23857-21ssh21:12:582
277589970,5cyclictest23549-21ssh00:19:442
277589970,5cyclictest20864-21ssh22:07:112
277589970,5cyclictest10036-21ssh22:00:342
277589970,4cyclictest12948-21sh00:31:272
277589970,3cyclictest4967-21ssh23:31:092
277589970,3cyclictest4839-21ssh00:27:022
277589970,3cyclictest13314-21ssh23:35:562
277589970,3cyclictest13314-21ssh23:35:562
277589970,3cyclictest12213-21ssh22:20:222
277589970,2cyclictest28-21ksoftirqd/223:45:152
277589970,1cyclictest0-21swapper/221:00:122
277529974,3cyclictest22-21ksoftirqd/100:00:011
277529974,2cyclictest22-21ksoftirqd/122:15:011
277529973,3cyclictest275-21systemd-journal23:08:151
277529973,3cyclictest275-21systemd-journal21:28:261
277529972,3cyclictest275-21systemd-journal21:20:001
277529970,7cyclictest0-21swapper/123:34:251
277529970,4cyclictest2950-21perf19:25:021
277489974,2cyclictest658-21snmpd21:37:250
277489974,2cyclictest275-21systemd-journal23:10:000
277489973,3cyclictest6650-21memory21:40:150
277489973,3cyclictest31061-21sshd00:23:520
277489973,3cyclictest275-21systemd-journal23:25:360
277639966,0cyclictest0-21swapper/323:20:043
277639966,0cyclictest0-21swapper/322:07:173
277639965,1cyclictest34-21ksoftirqd/319:15:013
277639963,2cyclictest658-21snmpd21:09:293
277639963,2cyclictest504-21dbus-daemon19:10:173
277639963,2cyclictest31606-21ssh21:55:073
277639963,2cyclictest20429-21smart_sda22:25:193
277639963,2cyclictest19137-21cat00:35:143
277639963,2cyclictest18106-21ntpq19:55:183
277639963,2cyclictest16762-21ssh23:00:313
277639963,1cyclictest0-21swapper/323:45:313
277639962,3cyclictest658-21snmpd23:10:223
277639962,3cyclictest658-21snmpd22:40:083
277639962,3cyclictest658-21snmpd21:34:043
277639962,3cyclictest658-21snmpd21:04:533
277639962,3cyclictest658-21snmpd20:42:003
277639962,3cyclictest658-21snmpd20:28:153
277639962,3cyclictest658-21snmpd19:50:323
277639962,3cyclictest6428-21hostname21:40:133
277639962,3cyclictest4959-21cat23:50:153
277639962,3cyclictest3867-21cat19:25:153
277639962,3cyclictest275-21systemd-journal20:32:553
277639962,3cyclictest26790-21cat20:15:133
277639962,3cyclictest26004-21cat00:20:183
277639962,3cyclictest22328-21cat20:05:143
277639962,3cyclictest11409-21which23:35:153
277639962,3cyclictest11409-21which23:35:153
277639962,1cyclictest141rcu_preempt00:15:133
277639962,1cyclictest0-21swapper/322:45:033
277639962,1cyclictest0-21swapper/300:05:113
277639960,6cyclictest0-21swapper/322:19:193
277639960,6cyclictest0-21swapper/322:10:253
277639960,6cyclictest0-21swapper/321:48:453
277639960,6cyclictest0-21swapper/321:48:453
277639960,5cyclictest7283-21tr20:45:123
277639960,5cyclictest23395-21/usr/sbin/munin23:05:213
277639960,3cyclictest9306-21/usr/sbin/munin20:50:163
277589966,0cyclictest0-21swapper/222:15:032
277589965,1cyclictest271rcuc/222:45:102
277589965,1cyclictest271rcuc/220:37:022
277589964,2cyclictest21661-21apt-get20:05:112
277589963,2cyclictest30996-21diskstats20:25:142
277589963,2cyclictest28743-21ssh23:07:582
277589963,2cyclictest0-21swapper/219:15:022
277589962,3cyclictest6747-21apt-key00:10:002
277589962,3cyclictest28381-21apt-get20:20:112
277589962,3cyclictest10874-21if_err_enp4s019:40:142
277589962,3cyclictest0-21swapper/220:40:102
277589961,3cyclictest0-21swapper/222:35:152
277589961,3cyclictest0-21swapper/219:52:252
277589961,1cyclictest31912-21ssh23:10:092
277589961,1cyclictest21905-21ssh22:26:072
277589961,1cyclictest14362-21taskset19:49:582
277589960,2cyclictest9329-21runrttasks20:50:102
277589960,2cyclictest16541-21ssh23:56:312
277589960,0cyclictest0-21swapper/222:30:262
277529966,0cyclictest0-21swapper/122:40:041
277529963,2cyclictest674-21lldpd21:59:051
277529963,2cyclictest663-21runrttasks21:30:101
277529963,2cyclictest658-21snmpd00:31:211
277529963,2cyclictest3526-21grep20:35:131
277529963,2cyclictest30323-21cron20:25:011
277529963,2cyclictest275-21systemd-journal22:45:361
277529963,2cyclictest26706-21sh00:20:431
277529963,2cyclictest25840-21idleruntime-cro20:15:011
277529963,2cyclictest21436-21ssh00:36:151
277529963,2cyclictest16302-21ls23:00:211
277529963,2cyclictest14146-21chrt19:47:131
277529963,2cyclictest1212-21sh23:48:111
277529962,3cyclictest6822-21packagekitd00:10:001
277529962,3cyclictest658-21snmpd23:16:121
277529962,3cyclictest658-21snmpd22:56:101
277529962,3cyclictest658-21snmpd20:59:331
277529962,3cyclictest658-21snmpd20:30:561
277529962,3cyclictest658-21snmpd19:40:451
277529962,3cyclictest658-21snmpd19:25:581
277529962,3cyclictest658-21snmpd19:19:181
277529962,3cyclictest658-21snmpd00:15:531
277529962,3cyclictest5273-21ntpq23:50:161
277529962,3cyclictest4500-21expr22:35:141
277529962,3cyclictest29887-21expr21:35:111
277529962,3cyclictest275-21systemd-journal22:11:031
277529962,3cyclictest27236-21cat21:15:111
277529962,3cyclictest18800-21cat21:10:121
277529962,3cyclictest11498-21ntpq22:20:181
277529961,4cyclictest0-21swapper/119:55:011
277529960,6cyclictest0-21swapper/123:27:191
277529960,6cyclictest0-21swapper/122:27:181
277529960,5cyclictest32573-21ls20:30:011
277529960,0cyclictest0-21swapper/122:50:531
277489966,0cyclictest0-21swapper/020:24:560
277489965,1cyclictest18423-21ssh23:39:420
277489965,1cyclictest18423-21ssh23:39:420
277489963,2cyclictest8002-21ssh22:55:250
277489963,2cyclictest7016-21ssh21:21:410
277489963,2cyclictest4801-21sh23:12:510
277489963,2cyclictest32399-21ssh21:17:520
277489963,2cyclictest275-21systemd-journal00:10:010
277489963,2cyclictest26578-21sh21:33:230
277489963,2cyclictest24025-21sshd00:00:350
277489963,2cyclictest2081-21ssh21:56:040
277489963,2cyclictest16903-21ssh21:45:510
277489963,2cyclictest16903-21ssh21:45:510
277489963,2cyclictest16885-21sh00:34:160
277489963,2cyclictest15084-21cat21:00:200
277489962,3cyclictest674-21lldpd19:50:450
277489962,3cyclictest658-21snmpd23:45:430
277489962,3cyclictest658-21snmpd23:40:070
277489962,3cyclictest658-21snmpd22:02:020
277489962,3cyclictest658-21snmpd21:52:040
277489962,3cyclictest658-21snmpd21:11:230
277489962,3cyclictest658-21snmpd21:05:470
277489962,3cyclictest658-21snmpd20:49:390
277489962,3cyclictest658-21snmpd20:43:570
277489962,3cyclictest658-21snmpd20:30:140
277489962,3cyclictest658-21snmpd20:18:440
277489962,3cyclictest658-21snmpd19:59:070
277489962,3cyclictest658-21snmpd19:38:210
277489962,3cyclictest658-21snmpd19:21:550
277489962,3cyclictest658-21snmpd19:11:420
277489962,3cyclictest658-21snmpd00:17:510
277489962,3cyclictest504-21dbus-daemon22:13:580
277489962,3cyclictest30933-21expr20:25:120
277489962,3cyclictest275-21systemd-journal22:39:370
277489962,3cyclictest275-21systemd-journal22:05:380
277489962,3cyclictest275-21systemd-journal20:02:490
277489962,3cyclictest275-21systemd-journal00:09:590
277489962,3cyclictest12607-21grep21:25:120
277489962,3cyclictest10866-21cat19:40:130
277489962,1cyclictest0-21swapper/023:20:160
277489962,1cyclictest0-21swapper/022:30:460
277489962,1cyclictest0-21swapper/000:36:430
277489960,6cyclictest0-21swapper/023:52:550
277489960,6cyclictest0-21swapper/023:32:000
277489960,6cyclictest0-21swapper/023:15:380
277489960,6cyclictest0-21swapper/022:28:300
277489960,5cyclictest11023-21head22:20:150
277489960,2cyclictest1768-21ntp_states00:25:160
13907260,0sleep00-21swapper/022:40:200
277639954,1cyclictest34-21ksoftirqd/300:00:023
277639953,1cyclictest126962sleep320:55:193
277639952,2cyclictest9441-21dpkg00:30:013
277639952,2cyclictest658-21snmpd00:25:083
277639952,2cyclictest2580-21chrt19:20:533
277639952,2cyclictest24315-21grep20:10:133
277639952,2cyclictest23867-21uname21:50:143
277639952,2cyclictest19232-21ssh23:40:063
277639952,2cyclictest18716-21cat21:10:113
277639952,2cyclictest13576-21cat19:45:173
277639952,1cyclictest0-21swapper/323:30:073
277639951,3cyclictest8306-21expr19:35:133
277639951,3cyclictest503-21rs:main3
277639951,3cyclictest12156-21cat21:25:123
277589954,1cyclictest271rcuc/220:55:062
277589952,2cyclictest7487-21diskstats20:45:132
277589952,2cyclictest275-21systemd-journal20:30:112
277589951,3cyclictest26235-21tr20:15:102
277589951,3cyclictest1738-21cat19:20:142
277589951,2cyclictest275-21systemd-journal19:30:022
277589950,4cyclictest17142-21sshd19:55:052
277589950,1cyclictest0-21swapper/221:05:062
277529952,2cyclictest8618-21unixbench_singl20:45:191
277529952,2cyclictest658-21snmpd19:30:191
277529952,2cyclictest5142-21expr20:40:101
277529952,2cyclictest501-21in:imuxsock19:36:581
277529952,2cyclictest494-21sh00:25:051
277529952,2cyclictest26488-21expr20:15:111
277529952,2cyclictest22114-21fschecks_time20:05:131
277529952,2cyclictest19771-21ls20:00:141
277529952,2cyclictest17185-21apt-get19:55:131
277529952,2cyclictest16699-21cat21:05:161
277529952,2cyclictest14307-21sh21:45:061
277529952,2cyclictest14307-21sh21:45:061
277529952,2cyclictest14024-21expr21:00:141
277529952,2cyclictest11511-21sh23:35:171
277529952,2cyclictest11511-21sh23:35:171
277529952,2cyclictest10008-21sshd20:50:151
277529951,3cyclictest8713-21cat22:00:161
277529951,3cyclictest0-21swapper/123:40:111
277529951,1cyclictest141rcu_preempt21:50:121
277489952,2cyclictest658-21snmpd22:45:050
277489952,2cyclictest658-21snmpd19:45:040
277489952,2cyclictest5530-21cat19:30:010
277489952,2cyclictest3316-21expr19:25:130
277489952,2cyclictest30369-21uniq22:50:130
277489952,2cyclictest21895-21expr20:05:130
277489952,2cyclictest11779-21expr20:55:140
277489951,3cyclictest3064-21/usr/sbin/munin22:15:170
277489951,3cyclictest29952-21apt-get19:15:030
277489951,3cyclictest275-21systemd-journal20:37:350
277489950,3cyclictest275-21systemd-journal20:10:090
277639940,3cyclictest2683-21/usr/sbin/munin20:35:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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