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2026-08-28 - 11:02
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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 Fri Aug 28, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
160682302271,21sleep10-21swapper/119:09:071
161092287256,20sleep20-21swapper/219:09:362
158302276246,20sleep00-21swapper/019:06:170
160772265237,18sleep30-21swapper/319:09:123
45722590,0sleep24573-21sh00:03:062
29922580,0sleep30-21swapper/321:26:383
192872560,1sleep00-21swapper/022:35:150
86642540,0sleep10-21swapper/122:48:131
206352200,0sleep30-21swapper/322:55:163
134352190,0sleep10-21swapper/100:28:121
68652170,0sleep00-21swapper/023:45:140
265832170,0sleep30-21swapper/321:21:293
150962170,0sleep10-21swapper/121:34:331
88282160,0sleep20-21swapper/221:50:112
195832120,0sleep00-21swapper/022:55:010
188172120,0sleep20-21swapper/221:36:022
1624099122,7cyclictest0-21swapper/222:32:132
21482110,0sleep10-21swapper/123:42:111
1624099104,5cyclictest8589-21/usr/sbin/munin21:30:152
1624099103,6cyclictest4099-21/usr/sbin/munin21:05:142
1624099103,1cyclictest32271-21apt00:20:122
1624099102,6cyclictest14409-21ssh21:14:572
1624099102,5cyclictest27357-21ssh22:59:472
1624099102,5cyclictest21393-21ssh21:18:532
1624099102,5cyclictest20785-21ssh21:56:492
1624099102,5cyclictest11267-21ssh22:50:042
1624099102,3cyclictest5120-21ssh23:05:172
1624099101,6cyclictest5640-21ssh23:44:532
1624099101,6cyclictest5473-21ssh22:07:062
1624099101,6cyclictest24255-21ssh21:40:022
1624099101,6cyclictest17405-21ssh23:12:502
1624099101,6cyclictest15863-21sh23:30:362
1624099101,3cyclictest28589-21sh20:45:162
162409996,2cyclictest8059-21ssh00:25:122
162409996,2cyclictest560-21gdbus19:20:012
162409992,5cyclictest6934-21ssh22:46:532
162409992,5cyclictest29991-21ssh22:02:272
162409992,5cyclictest27826-21ssh23:57:322
162409992,5cyclictest23498-21runrttasks19:24:562
162409992,5cyclictest1444-21ssh23:03:212
162409992,3cyclictest30793-21ssh00:19:162
162409992,3cyclictest24392-21ntp_kernel_pll_21:20:172
162409992,3cyclictest14484-21ssh22:12:352
162409991,6cyclictest922-21ssh23:22:142
162409991,6cyclictest7922-21ssh23:26:102
162409991,6cyclictest27931-21taskset19:31:132
162409991,5cyclictest4961-21seq21:47:262
162409991,5cyclictest2035-21ssh22:44:312
162409991,5cyclictest12309-21ssh00:07:412
162409991,3cyclictest23748-21ssh23:35:202
162409991,3cyclictest21179-21ssh00:32:492
162389998,1cyclictest12-21ksoftirqd/000:00:000
6058280,0sleep30-21swapper/319:55:173
162409984,3cyclictest9207-21idleruntime-cro20:05:012
162409984,3cyclictest7344-21ntpq23:45:172
162409984,3cyclictest275-21systemd-journal20:00:012
162409984,3cyclictest2067-21sh21:25:552
162409984,3cyclictest1625-21turbostat21:00:002
162409983,4cyclictest18121-21/usr/sbin/munin22:15:172
162409983,4cyclictest18121-21/usr/sbin/munin22:15:172
162409983,4cyclictest17016-21grep20:20:162
162409983,4cyclictest0-21swapper/220:25:112
162409983,4cyclictest0-21swapper/220:10:122
162409982,2cyclictest32587-21taskset19:43:252
162409982,2cyclictest29252-21sh00:37:432
162409982,2cyclictest24198-21ssh23:16:402
162409981,5cyclictest24710-21sh22:38:252
162409981,5cyclictest17353-21ssh23:51:092
162409981,3cyclictest29752-21ssh22:21:322
162409981,3cyclictest16774-21expr19:10:132
162409981,2cyclictest6079-21diskmemload22:25:592
162409981,2cyclictest21183-21ssh00:13:112
162389986,2cyclictest22843-21cron21:20:000
162389983,3cyclictest275-21systemd-journal23:40:000
162449973,3cyclictest32686-21ntpq00:00:193
162449973,3cyclictest30727-21snmpd23:21:243
162449973,3cyclictest30727-21snmpd21:04:353
162449973,3cyclictest275-21systemd-journal22:17:033
162449973,3cyclictest275-21systemd-journal22:17:033
162449971,3cyclictest275-21systemd-journal23:52:433
162409974,2cyclictest25581-21cpuspeed_turbos20:40:132
162409974,1cyclictest275-21systemd-journal20:50:002
162409973,3cyclictest9652-21tr20:05:132
162409973,3cyclictest545-21/usr/sbin/munin19:45:122
162409973,3cyclictest3524-21sed19:50:132
162409973,3cyclictest28620-21cat19:35:132
162409973,3cyclictest24726-21ntp_states19:25:162
162409973,3cyclictest23175-21apt-get20:35:122
162409973,3cyclictest2102-21cstates21:00:122
162409973,3cyclictest14030-21expr20:15:122
162409973,3cyclictest0-21swapper/220:30:122
162399973,3cyclictest30727-21snmpd20:05:241
162399973,3cyclictest275-21systemd-journal19:32:031
162399973,2cyclictest275-21systemd-journal22:05:011
162399970,3cyclictest6078-21apt21:10:001
162389975,1cyclictest18436-21dump-pmu-power19:15:010
162389974,2cyclictest28168-21head20:45:150
162389974,2cyclictest275-21systemd-journal23:18:200
162389973,3cyclictest275-21systemd-journal22:45:240
162389973,3cyclictest26081-21cat20:40:150
162389970,3cyclictest45732sh00:03:060
4210260,0sleep10-21swapper/119:50:191
162449966,0cyclictest0-21swapper/321:12:403
162449964,1cyclictest15536-21perl21:15:153
162449963,2cyclictest8950-21ssh23:26:583
162449963,2cyclictest504-21dbus-daemon22:07:023
162449963,2cyclictest501-21in:imuxsock20:15:593
162449963,2cyclictest31085-21ssh22:41:563
162449963,2cyclictest27714-21ssh21:41:283
162449963,2cyclictest25815-21rm23:55:593
162449963,2cyclictest25230-21ssh22:38:493
162449963,2cyclictest23392-21ssh21:58:503
162449963,2cyclictest22631-21tune2fs23:35:143
162449963,2cyclictest17480-21processes00:30:173
162449963,2cyclictest16375-21expr21:35:123
162449963,2cyclictest15101-21tr23:30:203
162449963,2cyclictest12765-21ssh22:30:393
162449963,2cyclictest11806-21sh21:32:003
162449963,2cyclictest11113-21ssh21:50:463
162449962,4cyclictest18548-21kworker/3:222:26:233
162449962,4cyclictest18548-21kworker/3:222:11:473
162449962,4cyclictest18548-21kworker/3:200:10:433
162449962,3cyclictest4272-21ntpq22:45:183
162449962,3cyclictest30727-21snmpd23:42:073
162449962,3cyclictest30727-21snmpd23:15:143
162449962,3cyclictest30727-21snmpd22:02:253
162449962,3cyclictest30727-21snmpd20:57:113
162449962,3cyclictest30727-21snmpd20:02:473
162449962,3cyclictest30727-21snmpd19:46:033
162449962,3cyclictest30727-21snmpd19:41:153
162449962,3cyclictest30727-21snmpd19:34:213
162449962,3cyclictest30727-21snmpd19:25:113
162449962,3cyclictest30727-21snmpd19:20:323
162449962,3cyclictest30727-21snmpd19:11:203
162449962,3cyclictest30727-21snmpd00:28:233
162449962,3cyclictest30727-21snmpd00:06:163
162449960,6cyclictest0-21swapper/323:45:123
162449960,6cyclictest0-21swapper/323:01:253
162449960,6cyclictest0-21swapper/322:21:153
162449960,6cyclictest0-21swapper/300:21:323
162449960,5cyclictest24804-21ls00:35:133
162449960,2cyclictest19246-21sed19:15:013
162449960,0cyclictest0-21swapper/300:18:593
162399966,0cyclictest0-21swapper/123:56:281
162399966,0cyclictest0-21swapper/122:20:151
162399966,0cyclictest0-21swapper/119:45:121
162399966,0cyclictest0-21swapper/100:22:341
162399963,3cyclictest10171-21kworker/1:123:31:511
162399963,3cyclictest10171-21kworker/1:122:42:351
162399963,3cyclictest10171-21kworker/1:122:07:071
162399963,2cyclictest8899-21ssh23:46:011
162399963,2cyclictest275-21systemd-journal21:12:101
162399963,2cyclictest275-21systemd-journal19:11:551
162399963,2cyclictest24918-21systemctl19:25:181
162399963,2cyclictest24169-21sh22:18:381
162399963,2cyclictest24169-21sh22:18:381
162399963,2cyclictest2175-21ssh00:01:171
162399963,2cyclictest21662-21sh00:13:341
162399963,2cyclictest11272-21sed22:10:191
162399963,1cyclictest0-21swapper/123:07:401
162399963,1cyclictest0-21swapper/100:16:471
162399962,3cyclictest30727-21snmpd23:35:461
162399962,3cyclictest30727-21snmpd23:23:301
162399962,3cyclictest30727-21snmpd22:51:441
162399962,3cyclictest30727-21snmpd20:46:131
162399962,3cyclictest30727-21snmpd20:22:491
162399962,3cyclictest30727-21snmpd20:15:071
162399962,3cyclictest30727-21snmpd19:39:001
162399962,3cyclictest275-21systemd-journal20:57:091
162399962,3cyclictest2705-21expr22:25:171
162399962,3cyclictest25120-21cron20:40:011
162399962,3cyclictest24811-21expr21:40:121
162399962,3cyclictest23637-21ls21:20:131
162399962,3cyclictest21805-21sh00:33:191
162399962,3cyclictest20594-21cat22:55:161
162399962,3cyclictest1843-21smart_sda21:45:211
162399962,3cyclictest17431-21expr21:55:131
162399962,3cyclictest16051-21ntpq21:15:181
162399962,1cyclictest0-21swapper/121:35:131
162399961,4cyclictest31721-21ssh21:25:011
162399960,6cyclictest0-21swapper/100:39:541
162399960,0cyclictest0-21swapper/123:50:061
162399960,0cyclictest0-21swapper/121:50:181
162389966,0cyclictest0-21swapper/023:31:210
162389966,0cyclictest0-21swapper/022:41:050
162389966,0cyclictest0-21swapper/021:56:060
162389964,1cyclictest30229-21df20:50:120
162389964,1cyclictest12-21ksoftirqd/021:25:000
162389963,2cyclictest6764-21ssh22:08:040
162389963,2cyclictest663-21runrttasks22:50:030
162389963,2cyclictest31813-21ssh23:21:050
162389963,2cyclictest30727-21snmpd23:01:300
162389963,2cyclictest23859-21cat19:25:120
162389963,2cyclictest20003-21irqstats19:15:150
162389963,2cyclictest15738-21rm21:54:190
162389963,2cyclictest1395-21ssh22:24:380
162389963,2cyclictest11132-21fschecks_time22:30:150
162389963,1cyclictest0-21swapper/021:46:040
162389962,3cyclictest5212-21ntpq23:05:180
162389962,3cyclictest3447-21users21:00:200
162389962,3cyclictest31435-21cat19:40:150
162389962,3cyclictest30727-21snmpd22:15:070
162389962,3cyclictest30727-21snmpd22:15:060
162389962,3cyclictest30727-21snmpd21:32:440
162389962,3cyclictest30727-21snmpd21:26:020
162389962,3cyclictest30727-21snmpd21:05:020
162389962,3cyclictest30727-21snmpd20:23:300
162389962,3cyclictest30727-21snmpd20:18:520
162389962,3cyclictest30727-21snmpd20:01:510
162389962,3cyclictest30727-21snmpd19:30:450
162389962,3cyclictest30727-21snmpd00:38:170
162389962,3cyclictest30727-21snmpd00:23:590
162389962,3cyclictest275-21systemd-journal23:43:100
162389962,3cyclictest26171-21cat22:00:150
162389962,3cyclictest22243-21wc20:30:200
162389962,3cyclictest12285-21smartctl20:10:140
162389962,3cyclictest0-21swapper/000:32:330
162389962,2cyclictest674-21lldpd00:27:090
162389962,1cyclictest141rcu_preempt20:30:010
162389962,1cyclictest0-21swapper/022:25:490
162389962,1cyclictest0-21swapper/021:10:110
162389962,1cyclictest0-21swapper/000:14:020
162389961,3cyclictest275-21systemd-journal19:51:580
162389960,6cyclictest50950irq/137-enp4s0-23:54:560
162389960,6cyclictest0-21swapper/022:12:270
162389960,0cyclictest0-21swapper/000:18:010
12865260,0sleep10-21swapper/122:30:441
162449952,3cyclictest18548-21kworker/3:223:05:113
162449952,2cyclictest504-21dbus-daemon20:22:443
162449952,2cyclictest3120-21expr19:50:123
162449952,2cyclictest30727-21snmpd21:05:053
162449952,2cyclictest29072-21tr19:35:153
162449952,2cyclictest27825-21cstates20:45:133
162449952,2cyclictest23846-21cat20:35:153
162449952,2cyclictest19084-21forks20:25:133
162449952,2cyclictest12041-21ls20:10:133
162449952,2cyclictest11564-21cat22:50:133
162449952,2cyclictest10141-21cat20:05:153
162449951,3cyclictest504-21dbus-daemon20:30:063
162449951,3cyclictest30157-21expr20:50:123
162449951,3cyclictest275-21systemd-journal20:40:143
162449951,3cyclictest18548-21kworker/3:223:10:033
162449950,2cyclictest358-21sshd21:45:113
162399952,2cyclictest7673-21expr00:05:121
162399952,2cyclictest7250-21apt20:00:121
162399952,2cyclictest31127-21expr19:40:131
162399952,2cyclictest30727-21snmpd20:50:041
162399952,2cyclictest30727-21snmpd20:35:161
162399952,2cyclictest30727-21snmpd20:30:041
162399952,2cyclictest30727-21snmpd20:10:121
162399952,2cyclictest19974-21cat19:15:151
162399952,2cyclictest12713-21expr23:10:121
162399952,1cyclictest0-21swapper/122:35:111
162399951,3cyclictest2857-21ntpq21:00:161
162399951,3cyclictest275-21systemd-journal23:25:111
162399951,3cyclictest21909-21expr19:20:121
162399951,3cyclictest18429-21sed20:25:011
162399950,4cyclictest20576-21ssh23:15:051
162399950,3cyclictest27919-21rm23:00:031
162399950,0cyclictest0-21swapper/119:59:021
162389953,1cyclictest643-21cat19:45:120
162389953,1cyclictest6079-21diskmemload21:35:110
162389952,2cyclictest7785-21expr00:05:120
162389952,2cyclictest6674-21taskset19:56:410
162389952,2cyclictest32296-21cat20:55:130
162389952,2cyclictest21849-21cat19:20:120
162389952,2cyclictest13466-21open_files23:10:170
162389951,3cyclictest6112-21/usr/sbin/munin23:25:160
162389951,3cyclictest29197-21cat19:35:150
162389951,3cyclictest24237-21rm21:40:010
162389951,3cyclictest23337-21grep20:35:130
162389950,3cyclictest275-21systemd-journal20:05:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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