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2025-12-13 - 08:33
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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 the 376 highest latencies:
System rackaslot8.osadl.org (updated Sat Dec 13, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294132310284,17sleep20-21swapper/219:06:172
294902300269,20sleep10-21swapper/119:07:171
295172254222,22sleep30-21swapper/319:07:393
294842245215,20sleep00-21swapper/019:07:120
15892820,0sleep20-21swapper/219:15:202
214442610,0sleep30-21swapper/320:00:163
82772540,0sleep10-21swapper/123:10:091
105152190,0sleep20-21swapper/219:35:172
326552160,0sleep10-21swapper/120:25:181
29816991210,2cyclictest34-21ksoftirqd/320:40:013
161922110,0sleep10-21swapper/122:15:081
30654290,0sleep10-21swapper/122:45:161
298089990,2cyclictest27672-21/usr/sbin/munin20:15:141
298069983,3cyclictest275-21systemd-journal20:55:010
298069983,2cyclictest9304-21awk19:35:010
298069982,3cyclictest24771-21perf22:35:010
17416280,0sleep10-21swapper/121:05:011
298169973,2cyclictest275-21systemd-journal21:02:573
298169972,4cyclictest658-21snmpd23:08:463
298129973,3cyclictest275-21systemd-journal23:15:002
298129972,3cyclictest275-21systemd-journal23:40:002
298089974,2cyclictest275-21systemd-journal00:00:001
298089974,2cyclictest22-21ksoftirqd/120:05:011
298089973,3cyclictest560-21gdbus23:34:591
298089973,3cyclictest12152-21cat00:30:101
298089973,1cyclictest11237-21idleruntime-cro00:30:011
298089972,3cyclictest15956-21munin-run22:15:001
298089971,5cyclictest20377-21awk22:25:001
298089970,4cyclictest11560-21awk22:05:001
298069973,3cyclictest4526-21cron00:19:550
298069973,3cyclictest3577-21ntpq19:20:160
298169965,1cyclictest3342-21dump-pmu-power20:35:013
298169963,2cyclictest663-21runrttasks22:11:513
298169963,2cyclictest658-21snmpd19:10:083
298169963,2cyclictest658-21snmpd00:36:343
298169963,2cyclictest5449-21taskset23:03:153
298169963,2cyclictest275-21systemd-journal23:11:543
298169963,2cyclictest26304-21expr23:50:083
298169963,2cyclictest24089-21cat23:45:083
298169963,2cyclictest14549-21cat23:25:003
298169962,3cyclictest658-21snmpd23:40:013
298169962,3cyclictest658-21snmpd23:39:203
298169962,3cyclictest658-21snmpd22:56:223
298169962,3cyclictest658-21snmpd22:30:123
298169962,3cyclictest658-21snmpd21:20:183
298169962,3cyclictest658-21snmpd21:09:363
298169962,3cyclictest658-21snmpd20:46:083
298169962,3cyclictest658-21snmpd20:13:303
298169962,3cyclictest658-21snmpd20:05:393
298169962,3cyclictest658-21snmpd19:51:183
298169962,3cyclictest658-21snmpd19:40:003
298169962,3cyclictest658-21snmpd19:15:123
298169962,3cyclictest658-21snmpd00:34:373
298169962,3cyclictest5863-21cut19:25:183
298169962,3cyclictest5349-21expr00:15:093
298169962,3cyclictest504-21dbus-daemon23:20:003
298169962,3cyclictest504-21dbus-daemon19:41:593
298169962,3cyclictest31842-21expr20:25:133
298169962,3cyclictest275-21systemd-journal21:45:093
298169962,3cyclictest20318-21cat21:10:143
298169962,3cyclictest12477-21cat22:05:143
298169962,2cyclictest29339-21expr21:30:143
298169960,5cyclictest11197-21sshd00:29:513
298169960,3cyclictest15209-21cat23:25:133
298169960,2cyclictest21754-21mailstats22:25:163
298129963,2cyclictest658-21snmpd23:56:332
298129963,2cyclictest658-21snmpd22:04:232
298129963,2cyclictest658-21snmpd21:46:342
298129963,2cyclictest658-21snmpd21:14:442
298129963,2cyclictest658-21snmpd20:05:102
298129963,2cyclictest275-21systemd-journal22:40:142
298129963,2cyclictest275-21systemd-journal22:31:262
298129963,2cyclictest275-21systemd-journal22:10:362
298129963,2cyclictest275-21systemd-journal21:09:592
298129963,2cyclictest11089-21grep20:50:132
298129962,3cyclictest658-21snmpd23:27:132
298129962,3cyclictest658-21snmpd23:04:252
298129962,3cyclictest658-21snmpd21:35:492
298129962,3cyclictest658-21snmpd21:15:092
298129962,3cyclictest658-21snmpd20:45:352
298129962,3cyclictest658-21snmpd20:40:442
298129962,3cyclictest658-21snmpd20:28:502
298129962,3cyclictest658-21snmpd20:02:102
298129962,3cyclictest658-21snmpd19:45:112
298129962,3cyclictest658-21snmpd19:44:232
298129962,3cyclictest658-21snmpd19:31:232
298129962,3cyclictest504-21dbus-daemon19:30:012
298129962,3cyclictest3879-21expr20:35:132
298129962,3cyclictest31870-21expr22:50:092
298129962,3cyclictest30581-21sed19:10:142
298129962,3cyclictest275-21systemd-journal21:43:292
298129962,3cyclictest275-21systemd-journal00:32:562
298129962,3cyclictest12731-21apt-get20:55:112
298129962,3cyclictest11052-21memory23:15:122
298129960,6cyclictest0-21swapper/223:35:232
298129960,2cyclictest11781-21/usr/sbin/munin22:05:192
298089965,1cyclictest22-21ksoftirqd/121:55:001
298089963,2cyclictest658-21snmpd22:44:251
298089963,2cyclictest275-21systemd-journal23:50:141
298089963,2cyclictest12700-21tr19:40:171
298089962,3cyclictest7685-21expr21:55:101
298089962,3cyclictest674-21lldpd00:39:381
298089962,3cyclictest674-21lldpd00:02:301
298089962,3cyclictest658-21snmpd23:36:381
298089962,3cyclictest658-21snmpd22:50:341
298089962,3cyclictest658-21snmpd21:41:551
298089962,3cyclictest658-21snmpd21:24:421
298089962,3cyclictest658-21snmpd20:55:251
298089962,3cyclictest658-21snmpd20:53:041
298089962,3cyclictest658-21snmpd20:22:411
298089962,3cyclictest658-21snmpd20:10:341
298089962,3cyclictest658-21snmpd19:56:071
298089962,3cyclictest658-21snmpd19:34:351
298089962,3cyclictest658-21snmpd19:26:411
298089962,3cyclictest658-21snmpd00:19:151
298089962,3cyclictest6160-21cat20:40:131
298089962,3cyclictest31699-21sendmail-mta19:11:591
298089962,3cyclictest275-21systemd-journal22:38:071
298089962,3cyclictest275-21systemd-journal22:06:001
298089962,3cyclictest23240-21cut20:05:131
298089962,3cyclictest16339-21expr19:50:131
298089962,3cyclictest15719-21seq19:47:491
298089962,3cyclictest13133-21basename23:20:151
298089960,6cyclictest0-21swapper/121:15:151
298069964,1cyclictest29469-21smart_sda23:55:150
298069963,2cyclictest658-21snmpd20:36:310
298069963,2cyclictest658-21snmpd00:10:050
298069963,2cyclictest504-21dbus-daemon21:30:180
298069963,2cyclictest275-21systemd-journal23:10:370
298069963,2cyclictest26204-21wc20:12:210
298069963,2cyclictest19123-21uname22:20:160
298069963,2cyclictest16583-21taskset21:01:100
298069963,2cyclictest1170-21cron22:55:000
298069962,3cyclictest658-21snmpd23:54:000
298069962,3cyclictest658-21snmpd23:30:200
298069962,3cyclictest658-21snmpd23:18:230
298069962,3cyclictest658-21snmpd21:51:460
298069962,3cyclictest658-21snmpd21:25:330
298069962,3cyclictest658-21snmpd19:40:360
298069962,3cyclictest577-21date21:40:000
298069962,3cyclictest504-21dbus-daemon22:45:010
298069962,3cyclictest3660-21cat21:45:150
298069962,3cyclictest31408-21wc22:50:010
298069962,3cyclictest275-21systemd-journal20:19:300
298069962,3cyclictest275-21systemd-journal19:58:070
298069962,3cyclictest21274-21cut20:00:170
298069962,3cyclictest16823-21cat19:50:150
298069962,3cyclictest11584-21cat00:30:080
298069962,3cyclictest10543-21ntpq22:00:130
2367260,0sleep20-21swapper/222:55:142
298169953,1cyclictest28277-21which22:40:143
298169952,2cyclictest843-21cpuspeed21:40:123
298169952,2cyclictest7984-21hddtemp_smartct21:55:113
298169952,2cyclictest7781-21grep19:30:153
298169952,2cyclictest658-21snmpd21:50:073
298169952,2cyclictest5797-21find20:40:133
298169952,2cyclictest3996-21grep00:10:163
298169952,2cyclictest32308-21cat22:50:123
298169952,2cyclictest30941-21sed22:45:163
298169952,2cyclictest2970-21cstates19:20:133
298169952,2cyclictest27225-21cpuspeed20:15:113
298169952,2cyclictest25161-21expr22:35:123
298169952,2cyclictest22812-21ntp_states21:15:173
298169952,2cyclictest18903-21cut22:20:143
298169952,2cyclictest17397-21smart_sda22:15:163
298169952,2cyclictest10381-21apt-config20:50:013
298169952,2cyclictest10341-21sed22:00:133
298169952,2cyclictest1014-21if_err_enp4s000:05:123
298169951,3cyclictest7549-21expr00:20:133
298169951,3cyclictest30726-21expr00:00:083
298169951,3cyclictest28519-21cat23:55:083
298169951,3cyclictest27253-21cat21:25:173
298169951,3cyclictest12690-21date20:55:013
298169950,4cyclictest17175-21/usr/sbin/munin23:30:133
298169950,3cyclictest275-21systemd-journal21:40:003
298169950,3cyclictest18331-21sshd19:55:063
298169950,2cyclictest14905-21ntpq19:45:173
298169950,1cyclictest29392-21apt-get20:20:103
298129953,1cyclictest28-21ksoftirqd/221:20:002
298129952,2cyclictest9382-21cut00:25:092
298129952,2cyclictest8930-21uptime21:55:172
298129952,2cyclictest658-21snmpd23:52:512
298129952,2cyclictest658-21snmpd23:05:042
298129952,2cyclictest658-21snmpd22:15:082
298129952,2cyclictest658-21snmpd21:25:092
298129952,2cyclictest658-21snmpd21:00:142
298129952,2cyclictest504-21dbus-daemon00:15:212
298129952,2cyclictest31313-21seq22:49:192
298129952,2cyclictest30071-21cat20:20:142
298129952,2cyclictest3000-21fschecks_count00:10:112
298129952,2cyclictest29474-21cut21:30:152
298129952,2cyclictest2854-21cat19:20:132
298129952,2cyclictest27675-21gltestperf20:15:142
298129952,2cyclictest275-21systemd-journal20:10:212
298129952,2cyclictest25245-21ls22:35:122
298129952,2cyclictest24191-21expr23:45:092
298129952,2cyclictest18981-21gltestperf22:20:142
298129952,2cyclictest17888-21irqstats23:30:112
298129952,2cyclictest17394-21cat19:50:192
298129952,2cyclictest1598-21/usr/sbin/munin00:05:172
298129952,2cyclictest14194-21seq23:22:062
298129951,3cyclictest658-21snmpd20:30:082
298129951,3cyclictest275-21systemd-journal00:37:522
298129951,1cyclictest141rcu_preempt22:25:092
298129950,4cyclictest7012-21/usr/sbin/munin00:20:112
298129950,3cyclictest30507-40systemctl00:00:012
298129950,1cyclictest18337-21/usr/sbin/munin19:55:192
298089953,1cyclictest7374-21expr00:20:121
298089953,1cyclictest246232sleep122:33:271
298089953,1cyclictest24532sleep122:56:091
298089953,1cyclictest10847-21cut23:15:101
298089952,2cyclictest658-21snmpd19:35:051
298089952,2cyclictest5857-21apt-get23:05:091
298089952,2cyclictest4251-21cat20:35:151
298089952,2cyclictest4034-21df_inode23:00:121
298089952,2cyclictest3760-21cut00:10:161
298089952,2cyclictest31938-21cron19:15:001
298089952,2cyclictest31243-21cat21:35:121
298089952,2cyclictest28924-21cut21:30:131
298089952,2cyclictest24826-21cut23:45:141
298089952,2cyclictest22233-21sh23:40:161
298089952,2cyclictest21283-21cat22:25:111
298089952,2cyclictest1629-21expr20:30:131
298089951,3cyclictest8276-21cat20:45:101
298089951,3cyclictest658-21snmpd23:25:101
298089951,3cyclictest658-21snmpd00:05:451
298089951,3cyclictest4232-21seq19:20:331
298089951,3cyclictest3922-21ntp_kernel_err21:45:171
298089951,3cyclictest19634-21/usr/sbin/munin21:10:181
298089951,3cyclictest16147-21basename21:00:191
298069953,1cyclictest4943-21find23:00:180
298069952,2cyclictest8539-21grep20:45:120
298069952,2cyclictest7798-21cron23:10:000
298069952,2cyclictest7705-21cat00:20:130
298069952,2cyclictest7553-21cpuspeed_turbos21:55:090
298069952,2cyclictest674-21lldpd20:28:030
298069952,2cyclictest6686-21/usr/sbin/munin20:40:160
298069952,2cyclictest658-21snmpd23:20:020
298069952,2cyclictest658-21snmpd21:14:060
298069952,2cyclictest658-21snmpd00:37:220
298069952,2cyclictest658-21snmpd00:26:390
298069952,2cyclictest5510-21cat19:25:150
298069952,2cyclictest30499-21cups-browsed00:00:010
298069952,2cyclictest29524-21grep20:20:110
298069952,2cyclictest26525-21grep22:35:210
298069952,2cyclictest24223-21sed21:20:000
298069952,2cyclictest22780-21systemctl23:40:200
298069952,2cyclictest17805-21expr21:05:130
298069952,2cyclictest15559-21chrt19:45:450
298069952,2cyclictest14979-21cat23:25:120
298069952,2cyclictest14598-11brltty21:15:030
298069952,2cyclictest14524-21expr22:10:110
298069952,2cyclictest14399-21chrt20:56:400
298069952,2cyclictest12014-21expr22:05:110
298069952,2cyclictest10777-21ls19:35:200
298069951,3cyclictest810-21/usr/sbin/munin19:15:140
298069951,3cyclictest504-21dbus-daemon00:05:160
298069951,3cyclictest275-21systemd-journal22:56:130
298069951,3cyclictest23805-21/usr/sbin/munin23:45:150
298069951,3cyclictest23014-21expr20:05:120
298069951,3cyclictest20052-21if_enp4s023:35:150
298069951,3cyclictest1990-21/usr/sbin/munin20:30:130
298069950,4cyclictest29997-21/usr/sbin/munin19:10:130
298069950,4cyclictest20590-21/usr/sbin/munin22:25:110
298069950,4cyclictest1142-21expr21:40:130
298129941,3cyclictest5196-21apt-get21:50:122
298089941,2cyclictest658-21snmpd21:25:031
298069942,1cyclictest16402-21cstates22:15:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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