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2026-04-06 - 13:51
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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 highest latencies:
System rackaslot8.osadl.org (updated Mon Apr 06, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
91712310280,19sleep20-21swapper/219:05:302
93572300267,23sleep10-21swapper/119:07:381
94832284231,17sleep30-21swapper/319:09:173
94022265235,20sleep00-21swapper/019:08:130
74292700,2sleep37426-21fschecks_count20:15:153
6382590,0sleep10-21swapper/122:29:311
38732550,0sleep00-21swapper/000:10:000
289912550,0sleep20-21swapper/223:05:402
292882540,0sleep30-21swapper/321:47:173
24502540,0sleep20-21swapper/220:05:012
74262530,0sleep30-21swapper/323:12:453
194582190,0sleep10-21swapper/121:40:571
87722180,0sleep10-21swapper/122:54:001
307652180,0sleep10-21swapper/123:07:031
301732170,0sleep30-21swapper/300:05:183
5442160,0sleep30-21swapper/300:26:453
34272160,0sleep10-21swapper/123:50:071
250062150,0sleep20-21swapper/222:44:212
208782130,0sleep10-21swapper/123:00:421
71572120,0sleep10-21swapper/122:33:111
9648991110,1cyclictest12-21ksoftirqd/021:10:010
965099108,1cyclictest22-21ksoftirqd/123:40:001
965099108,1cyclictest22-21ksoftirqd/100:00:001
964899109,1cyclictest12-21ksoftirqd/021:25:000
964899107,2cyclictest12-21ksoftirqd/020:40:010
16623290,0sleep20-21swapper/223:38:032
96509985,2cyclictest22-21ksoftirqd/100:35:001
96489983,4cyclictest658-21snmpd23:36:370
96489982,3cyclictest25553-21munin-run22:25:010
96489980,7cyclictest0-21swapper/000:20:180
96589975,2cyclictest27304-21sh00:23:413
96589974,2cyclictest658-21snmpd23:21:463
96589973,3cyclictest275-21systemd-journal20:10:253
96589973,3cyclictest10115-21awk21:55:163
96549973,3cyclictest674-21lldpd22:51:522
96549973,3cyclictest658-21snmpd19:18:322
96549973,3cyclictest275-21systemd-journal23:16:282
96549973,3cyclictest275-21systemd-journal19:23:212
96549973,1cyclictest0-21swapper/200:35:212
96549971,3cyclictest26657-21munin-run23:25:002
96509974,1cyclictest8567-21kworker/1:000:16:181
96509973,3cyclictest275-21systemd-journal22:15:011
96509973,3cyclictest275-21systemd-journal00:29:021
96509973,3cyclictest17192-21apt-get19:25:131
96509972,3cyclictest18508-21dump-pmu-power20:40:011
96509970,7cyclictest0-21swapper/120:15:151
96509970,4cyclictest16938-21awk19:25:011
96489975,1cyclictest12-21ksoftirqd/023:20:010
96489975,1cyclictest12-21ksoftirqd/021:55:010
96489973,3cyclictest658-21snmpd21:25:120
96489973,3cyclictest658-21snmpd20:15:070
96489973,3cyclictest275-21systemd-journal21:41:040
96489973,3cyclictest16119-21cron21:20:010
6242270,0sleep20-21swapper/200:10:222
31334270,0sleep10-21swapper/119:55:151
29829270,0sleep20-21swapper/223:26:062
9674260,0sleep00-21swapper/022:15:130
96589966,0cyclictest0-21swapper/323:47:223
96589966,0cyclictest0-21swapper/322:46:523
96589966,0cyclictest0-21swapper/322:20:533
96589964,1cyclictest4171-21cut23:50:143
96589963,2cyclictest658-21snmpd19:32:123
96589963,2cyclictest5418-21awk00:10:173
96589963,2cyclictest4814-21ssh22:11:523
96589963,2cyclictest30117-21taskset19:53:053
96589963,2cyclictest29169-21rm23:25:343
96589963,2cyclictest22824-21chrt21:43:353
96589963,2cyclictest22300-21cat19:35:153
96589963,2cyclictest21127-21sh22:41:193
96589963,2cyclictest13817-21ntp_states00:15:163
96589963,2cyclictest11389-21ssh22:15:223
96589963,2cyclictest10507-21if_enp4s019:10:143
96589963,1cyclictest0-21swapper/323:56:443
96589963,1cyclictest0-21swapper/321:50:043
96589962,3cyclictest658-21snmpd23:18:223
96589962,3cyclictest658-21snmpd23:05:223
96589962,3cyclictest658-21snmpd23:01:253
96589962,3cyclictest658-21snmpd22:27:533
96589962,3cyclictest658-21snmpd21:34:563
96589962,3cyclictest658-21snmpd21:16:183
96589962,3cyclictest658-21snmpd20:54:443
96589962,3cyclictest658-21snmpd20:36:593
96589962,3cyclictest658-21snmpd20:26:583
96589962,3cyclictest658-21snmpd20:05:013
96589962,3cyclictest658-21snmpd20:00:583
96589962,3cyclictest658-21snmpd19:25:153
96589962,3cyclictest275-21systemd-journal19:40:443
96589962,3cyclictest26108-21cat20:55:143
96589962,3cyclictest0-21swapper/322:55:113
96589962,3cyclictest0-21swapper/322:55:113
96589962,2cyclictest275-21systemd-journal00:37:223
96589962,2cyclictest275-21systemd-journal00:00:003
96589962,1cyclictest0-21swapper/322:09:103
96589960,6cyclictest0-21swapper/323:40:163
96589960,6cyclictest0-21swapper/323:35:493
96589960,6cyclictest0-21swapper/323:31:223
96589960,6cyclictest0-21swapper/322:36:533
96589960,6cyclictest0-21swapper/321:11:503
96589960,2cyclictest27983-21taskset21:00:133
96589960,0cyclictest0-21swapper/322:00:333
96549966,0cyclictest0-21swapper/222:58:472
96549966,0cyclictest0-21swapper/222:58:472
96549966,0cyclictest0-21swapper/200:19:152
96549963,2cyclictest9995-21ntp_offset21:55:152
96549963,2cyclictest9457-21rm21:35:152
96549963,2cyclictest658-21snmpd19:59:012
96549963,2cyclictest658-21snmpd19:54:492
96549963,2cyclictest5027-21sh00:30:032
96549963,2cyclictest32562-21ssh21:10:092
96549963,2cyclictest25629-21cat22:05:132
96549963,2cyclictest23940-21ssh21:44:302
96549963,2cyclictest22667-21ssh22:22:452
96549963,2cyclictest21024-21wc23:40:192
96549963,1cyclictest0-21swapper/222:36:502
96549962,3cyclictest7775-21seq23:52:172
96549962,3cyclictest658-21snmpd22:30:482
96549962,3cyclictest658-21snmpd21:47:592
96549962,3cyclictest658-21snmpd21:30:482
96549962,3cyclictest658-21snmpd20:51:082
96549962,3cyclictest658-21snmpd20:47:022
96549962,3cyclictest658-21snmpd20:43:382
96549962,3cyclictest658-21snmpd19:30:212
96549962,3cyclictest658-21snmpd00:26:442
96549962,3cyclictest504-21dbus-daemon00:25:002
96549962,3cyclictest31815-21sshd21:05:592
96549962,3cyclictest275-21systemd-journal20:21:262
96549962,3cyclictest275-21systemd-journal00:05:012
96549962,3cyclictest25144-21expr21:25:132
96549962,3cyclictest17395-21cut21:20:162
96549962,3cyclictest12165-21cat20:25:152
96549962,1cyclictest0-21swapper/223:34:422
96549962,1cyclictest0-21swapper/223:11:492
96549962,1cyclictest0-21swapper/200:03:152
96549960,6cyclictest0-21swapper/222:19:562
96549960,5cyclictest13363-21sed23:55:192
96549960,0cyclictest0-21swapper/222:29:482
96509966,0cyclictest0-21swapper/122:36:571
96509963,2cyclictest8167-21taskset21:15:011
96509963,2cyclictest658-21snmpd19:30:151
96509963,2cyclictest31681-21sh21:49:101
96509963,2cyclictest29835-21smart_sda00:05:181
96509963,2cyclictest28502-21ssh21:26:531
96509963,2cyclictest2567-21sh23:10:111
96509963,2cyclictest24247-21ssh23:23:071
96509963,2cyclictest22313-21ntpq00:20:151
96509963,2cyclictest18568-21diskstats22:40:131
96509963,2cyclictest14487-21tune2fs20:30:131
96509963,2cyclictest14287-21seq23:16:431
96509963,2cyclictest10483-21apt-get22:55:111
96509963,2cyclictest10483-21apt-get22:55:111
96509962,3cyclictest658-21snmpd23:46:371
96509962,3cyclictest658-21snmpd22:02:021
96509962,3cyclictest658-21snmpd21:10:331
96509962,3cyclictest658-21snmpd21:00:201
96509962,3cyclictest658-21snmpd20:42:141
96509962,3cyclictest504-21dbus-daemon20:25:011
96509962,3cyclictest3505-21ntpq20:05:161
96509962,3cyclictest30797-21hwlatdetect21:05:131
96509962,3cyclictest275-21systemd-journal20:50:581
96509962,3cyclictest275-21systemd-journal20:00:481
96509962,3cyclictest25740-21expr22:05:131
96509962,3cyclictest18565-21cat22:20:151
96509961,3cyclictest275-21systemd-journal00:13:371
96509961,3cyclictest22968-21awk20:50:011
96509960,6cyclictest0-21swapper/121:51:141
96509960,0cyclictest0-21swapper/100:00:471
96489966,0cyclictest0-21swapper/021:30:340
96489966,0cyclictest0-21swapper/019:25:140
96489966,0cyclictest0-21swapper/000:32:550
96489964,2cyclictest12-21ksoftirqd/019:15:010
96489964,1cyclictest658-21snmpd23:51:370
96489963,2cyclictest8156-21ssh22:33:590
96489963,2cyclictest658-21snmpd22:41:050
96489963,2cyclictest32250-21rm23:08:130
96489963,2cyclictest20649-21ntp_kernel_pll_23:40:160
96489963,2cyclictest19496-21basename00:00:000
96489963,2cyclictest11906-21sh22:35:300
96489963,2cyclictest0-21swapper/022:01:080
96489962,3cyclictest658-21snmpd23:32:460
96489962,3cyclictest658-21snmpd23:26:360
96489962,3cyclictest658-21snmpd23:11:340
96489962,3cyclictest658-21snmpd22:51:120
96489962,3cyclictest658-21snmpd22:05:260
96489962,3cyclictest658-21snmpd21:59:200
96489962,3cyclictest658-21snmpd21:13:480
96489962,3cyclictest658-21snmpd20:31:320
96489962,3cyclictest658-21snmpd19:51:010
96489962,3cyclictest658-21snmpd00:17:230
96489962,3cyclictest5402-21hostname20:10:150
96489962,3cyclictest275-21systemd-journal19:35:430
96489962,3cyclictest26759-21cat19:45:140
96489962,3cyclictest13390-21cat19:15:160
96489962,3cyclictest11608-21cut22:55:170
96489962,3cyclictest11608-21cut22:55:170
96489960,6cyclictest0-21swapper/022:26:380
96489960,6cyclictest0-21swapper/022:11:580
96489960,5cyclictest13405-21/usr/sbin/munin00:35:200
96489960,4cyclictest16940-21dump-pmu-power19:25:010
96489960,4cyclictest11245-21munin-run20:25:010
96489960,3cyclictest19725-21rm00:00:000
96489960,0cyclictest0-21swapper/019:55:190
96589953,1cyclictest30691-21tr19:55:113
96589952,2cyclictest9827-21tail20:20:133
96589952,2cyclictest8507-21rm21:35:033
96589952,2cyclictest5061-21taskset00:30:043
96589952,2cyclictest30803-21hostname21:05:143
96589952,2cyclictest25205-21df21:25:133
96589952,2cyclictest21155-21grep20:45:113
96589952,2cyclictest12355-21cut19:15:023
96589951,3cyclictest658-21snmpd19:20:093
96589951,3cyclictest275-21systemd-journal20:40:063
96589951,3cyclictest275-21systemd-journal20:30:043
96589951,3cyclictest26487-21df19:45:133
96589951,3cyclictest16941-21expr21:20:133
96589951,2cyclictest275-21systemd-journal22:50:063
96589951,1cyclictest0-21swapper/322:30:073
96549955,0cyclictest0-21swapper/221:15:042
96549953,1cyclictest32168-21diskmemload23:00:102
96549953,1cyclictest2987-21grep20:05:132
96549953,1cyclictest22190-21gltestperf19:35:142
96549953,1cyclictest0-21swapper/220:35:162
96549952,2cyclictest658-21snmpd23:45:042
96549952,2cyclictest658-21snmpd19:25:032
96549952,2cyclictest6423-21chrt20:10:522
96549952,2cyclictest26790-21cat22:45:112
96549952,2cyclictest26773-21cat19:45:152
96549952,2cyclictest24290-21fschecks_count19:40:132
96549952,2cyclictest17063-21sh22:00:062
96549952,2cyclictest14702-21interrupts20:30:142
96549952,2cyclictest1-21systemd21:00:012
96549952,2cyclictest10437-21head19:10:142
96549951,3cyclictest6749-21cron20:15:012
96549951,3cyclictest275-21systemd-journal20:55:572
96549951,3cyclictest1481-21expr22:10:122
96549950,2cyclictest1153-21cstates21:50:132
96509953,1cyclictest9837-21/usr/sbin/munin19:10:141
96509953,1cyclictest22925-21threads19:35:191
96509953,1cyclictest11898-21fschecks_count20:25:141
96509952,3cyclictest0-21swapper/123:30:121
96509952,2cyclictest9072-21cat21:35:131
96509952,2cyclictest8964-21grep21:55:091
96509952,2cyclictest880-21cat21:30:131
96509952,2cyclictest663-21runrttasks23:40:011
96509952,2cyclictest658-21snmpd23:25:011
96509952,2cyclictest658-21snmpd21:20:091
96509952,2cyclictest658-21snmpd00:35:111
96509952,2cyclictest5470-21cat20:10:151
96509952,2cyclictest28912-21hddtemp_smartct19:50:141
96509952,2cyclictest26367-21dpkg22:45:011
96509952,2cyclictest26140-21cpu19:45:121
96509952,2cyclictest24538-21cat19:40:141
96509952,2cyclictest1421-21expr22:10:131
96509952,2cyclictest12338-21ntpq19:15:021
96509950,1cyclictest141rcu_preempt20:55:111
96489952,2cyclictest658-21snmpd20:40:110
96489952,2cyclictest4437-21ssh00:10:050
96489952,2cyclictest29702-21expr00:25:120
96489952,2cyclictest27956-21acpi21:00:130
96489952,2cyclictest27740-21sh23:45:100
96489952,2cyclictest25775-21expr20:55:120
96489952,2cyclictest19777-21ls19:30:120
96489952,2cyclictest18800-21sh23:20:040
96489952,2cyclictest18454-21taskset23:00:020
96489952,2cyclictest11700-21cstates20:25:130
96489952,2cyclictest1156-21/usr/sbin/munin20:00:150
96489951,3cyclictest658-21snmpd19:40:390
96489951,3cyclictest3297-21cut20:05:150
96489951,3cyclictest23902-21irqstats20:50:140
96489951,3cyclictest22299-21cat20:45:170
96489951,2cyclictest26522-21rm22:45:080
96489950,4cyclictest9719-21/usr/sbin/munin21:35:160
25015250,0sleep00-21swapper/021:45:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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