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2026-03-12 - 10:52
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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 Thu Mar 12, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
229872328297,21sleep10-21swapper/119:08:421
228852291264,17sleep20-21swapper/219:07:222
229082272242,20sleep00-21swapper/019:07:410
229642263232,20sleep30-21swapper/319:08:233
188962570,0sleep30-21swapper/322:11:393
50762550,0sleep30-21swapper/322:42:343
259522540,0sleep10-21swapper/120:25:131
108162210,0sleep20-21swapper/222:06:442
122332190,0sleep10-21swapper/122:07:511
176482180,0sleep30-21swapper/323:48:533
259412160,0sleep20-21swapper/223:53:552
296692140,0sleep20-21swapper/223:16:272
284952140,0sleep30-21swapper/321:38:453
46952120,0sleep10-21swapper/122:03:231
23206991211,1cyclictest34-21ksoftirqd/300:00:003
23201991211,1cyclictest28-21ksoftirqd/200:00:002
2320199103,5cyclictest28-21ksoftirqd/221:44:382
2320199102,5cyclictest28-21ksoftirqd/219:25:012
2320199100,2cyclictest28-21ksoftirqd/223:30:012
2320199100,2cyclictest28-21ksoftirqd/223:30:012
30004290,1sleep130005-21ssh00:15:211
232069997,1cyclictest34-21ksoftirqd/322:30:013
232019998,1cyclictest28-21ksoftirqd/221:50:022
232019993,4cyclictest28-21ksoftirqd/223:05:302
232019993,4cyclictest28-21ksoftirqd/221:29:432
232019993,4cyclictest28-21ksoftirqd/221:29:432
232019992,5cyclictest28-21ksoftirqd/221:46:282
232019992,4cyclictest28-21ksoftirqd/222:16:252
22943290,0sleep20-21swapper/222:53:372
32762280,0sleep30-21swapper/321:40:373
28532280,0sleep10-21swapper/120:30:141
25572280,0sleep10-21swapper/120:25:011
232019987,1cyclictest28-21ksoftirqd/219:35:022
232019983,4cyclictest28-21ksoftirqd/200:08:002
232019982,5cyclictest28-21ksoftirqd/222:13:422
232019982,4cyclictest28-21ksoftirqd/223:56:142
232019982,4cyclictest28-21ksoftirqd/223:42:212
232019982,4cyclictest28-21ksoftirqd/223:35:032
232019982,4cyclictest28-21ksoftirqd/223:20:052
232019982,4cyclictest28-21ksoftirqd/222:55:182
232019982,4cyclictest28-21ksoftirqd/222:30:592
232019982,4cyclictest28-21ksoftirqd/222:23:312
232019982,4cyclictest28-21ksoftirqd/221:35:372
232019982,4cyclictest28-21ksoftirqd/221:32:272
232019982,4cyclictest28-21ksoftirqd/221:24:042
232019982,4cyclictest28-21ksoftirqd/200:20:482
232019982,3cyclictest28-21ksoftirqd/221:19:572
232019981,5cyclictest28-21ksoftirqd/223:34:312
232019981,5cyclictest28-21ksoftirqd/220:36:302
232019981,4cyclictest28-21ksoftirqd/221:13:232
232019981,4cyclictest28-21ksoftirqd/200:32:472
232019981,4cyclictest28-21ksoftirqd/200:17:182
232019981,4cyclictest0-21swapper/221:55:352
232019981,2cyclictest28-21ksoftirqd/222:36:282
231989987,1cyclictest22-21ksoftirqd/121:20:001
231939986,1cyclictest24848-21rm23:53:060
17717280,0sleep00-21swapper/000:28:130
15922280,0sleep30-21swapper/300:07:093
4237270,0sleep00-21swapper/023:01:250
232069974,2cyclictest34-21ksoftirqd/323:55:003
232069974,2cyclictest34-21ksoftirqd/322:00:013
232069973,3cyclictest658-21snmpd23:12:223
232069973,3cyclictest560-21gdbus22:35:063
232069973,3cyclictest560-21gdbus22:17:003
232069973,3cyclictest504-21dbus-daemon23:36:213
232069973,3cyclictest275-21systemd-journal22:02:243
232069973,3cyclictest25151-11brltty22:28:393
232069971,1cyclictest141rcu_preempt20:05:113
232069970,3cyclictest4732-21unixbench_multi23:40:203
232069970,3cyclictest1607550ssh21:10:593
232069970,1cyclictest141rcu_preempt23:55:103
232019976,1cyclictest28-21ksoftirqd/223:10:022
232019974,2cyclictest23446-21apt-get20:20:112
232019973,3cyclictest1-21systemd19:35:022
232019972,3cyclictest28-21ksoftirqd/220:50:132
232019972,3cyclictest0-21swapper/200:35:052
232019971,4cyclictest28-21ksoftirqd/223:47:252
232019971,4cyclictest28-21ksoftirqd/222:45:072
232019971,4cyclictest28-21ksoftirqd/222:40:232
232019971,4cyclictest28-21ksoftirqd/222:25:352
232019971,4cyclictest28-21ksoftirqd/222:00:092
232019971,4cyclictest28-21ksoftirqd/221:02:082
232019971,4cyclictest28-21ksoftirqd/219:44:392
232019971,3cyclictest0-21swapper/200:12:112
232019971,2cyclictest28-21ksoftirqd/220:10:142
232019971,1cyclictest28-21ksoftirqd/200:25:142
232019970,4cyclictest28-21ksoftirqd/223:02:082
231989973,3cyclictest275-21systemd-journal19:21:471
231989973,3cyclictest26229-21ntpq22:55:151
231989972,2cyclictest26815-21dump-pmu-power23:35:001
231939974,2cyclictest658-21snmpd22:02:530
231939973,3cyclictest7847-21apt-get19:45:130
231939973,3cyclictest658-21snmpd22:49:270
231939973,3cyclictest560-21gdbus23:25:000
231939973,3cyclictest275-21systemd-journal21:24:020
231939972,3cyclictest504-21dbus-daemon22:40:000
232069966,0cyclictest0-21swapper/321:00:183
232069966,0cyclictest0-21swapper/300:39:273
232069963,2cyclictest7360-21ssh00:21:323
232069963,2cyclictest658-21snmpd23:05:223
232069963,2cyclictest658-21snmpd23:04:283
232069963,2cyclictest501-21in:imuxsock20:25:383
232069963,2cyclictest4556-21cut20:50:123
232069963,2cyclictest3104-21cat20:45:163
232069963,2cyclictest29076-21ssh22:56:583
232069963,2cyclictest23037-21sh23:32:053
232069963,2cyclictest21108-21open_files00:10:163
232069963,2cyclictest21000-21gltestperf00:30:133
232069963,2cyclictest20877-11brltty23:26:163
232069963,2cyclictest20877-11brltty23:26:153
232069963,2cyclictest1152-21cat22:20:203
232069962,3cyclictest674-21lldpd21:16:213
232069962,3cyclictest658-21snmpd23:24:163
232069962,3cyclictest658-21snmpd22:51:133
232069962,3cyclictest658-21snmpd22:46:463
232069962,3cyclictest658-21snmpd21:50:093
232069962,3cyclictest658-21snmpd20:41:443
232069962,3cyclictest658-21snmpd19:18:093
232069962,3cyclictest26724-21cat23:15:133
232069962,3cyclictest14994-21cut20:00:153
232069962,3cyclictest12642-21df19:55:123
232069962,3cyclictest12555-21ssh21:48:503
232069962,1cyclictest141rcu_preempt19:35:093
232069962,1cyclictest0-21swapper/300:28:283
232069962,1cyclictest0-21swapper/300:15:323
232069961,3cyclictest25186-21systemd-udevd20:22:223
232069960,3cyclictest5909-21ssh21:25:103
232069960,3cyclictest5909-21ssh21:25:103
232069960,2cyclictest141rcu_preempt21:05:133
232019965,1cyclictest271rcuc/219:25:192
232019964,1cyclictest0-21swapper/219:20:012
232019963,2cyclictest23434-21runrttasks19:10:112
232019963,1cyclictest141rcu_preempt19:50:182
232019962,3cyclictest658-21snmpd20:49:542
232019962,3cyclictest658-21snmpd19:55:282
232019962,2cyclictest275-21systemd-journal20:00:082
232019961,3cyclictest28-21ksoftirqd/220:30:332
232019961,3cyclictest0-21swapper/220:55:192
232019961,3cyclictest0-21swapper/220:26:072
232019961,3cyclictest0-21swapper/219:45:152
232019960,4cyclictest0-21swapper/220:40:022
232019960,4cyclictest0-21swapper/220:15:022
232019960,4cyclictest0-21swapper/220:05:582
231989966,0cyclictest0-21swapper/123:56:031
231989966,0cyclictest0-21swapper/122:49:251
231989963,2cyclictest504-21dbus-daemon20:39:251
231989963,2cyclictest28678-21sh22:17:491
231989963,2cyclictest275-21systemd-journal19:15:051
231989963,2cyclictest26258-21sh00:33:331
231989963,2cyclictest22262-21/usr/sbin/munin21:35:191
231989963,2cyclictest19733-21sh00:29:521
231989963,2cyclictest13336-21ssh21:29:491
231989963,2cyclictest13336-21ssh21:29:481
231989963,1cyclictest32113-21sshd21:20:331
231989963,1cyclictest0-21swapper/123:43:171
231989963,1cyclictest0-21swapper/122:53:191
231989963,1cyclictest0-21swapper/100:01:051
231989962,3cyclictest8220-21expr19:45:131
231989962,3cyclictest658-21snmpd23:25:161
231989962,3cyclictest658-21snmpd23:25:161
231989962,3cyclictest658-21snmpd21:10:391
231989962,3cyclictest658-21snmpd21:00:111
231989962,3cyclictest658-21snmpd20:18:331
231989962,3cyclictest658-21snmpd20:05:551
231989962,3cyclictest658-21snmpd19:54:221
231989962,3cyclictest658-21snmpd19:32:401
231989962,3cyclictest6249-21ntpq19:40:141
231989962,3cyclictest275-21systemd-journal19:28:021
231989962,3cyclictest20327-21awk23:50:141
231989962,2cyclictest14991-21ssh23:08:191
231989960,6cyclictest0-21swapper/123:39:491
231989960,6cyclictest0-21swapper/123:19:231
231989960,6cyclictest0-21swapper/122:22:581
231989960,6cyclictest0-21swapper/121:46:521
231989960,5cyclictest25400-21service19:15:011
231989960,5cyclictest13033-21idleruntime-cro21:10:001
231989960,4cyclictest14250-21dump-pmu-power20:00:001
231989960,0cyclictest0-21swapper/122:40:091
231989960,0cyclictest0-21swapper/121:52:031
231989960,0cyclictest0-21swapper/121:42:461
231989960,0cyclictest0-21swapper/121:31:001
231939966,0cyclictest0-21swapper/023:38:180
231939963,2cyclictest658-21snmpd22:05:360
231939963,2cyclictest6138-21ssh00:00:560
231939963,2cyclictest31600-21sh23:17:580
231939963,2cyclictest275-21systemd-journal23:30:060
231939963,2cyclictest275-21systemd-journal19:51:170
231939963,2cyclictest27400-21sh21:37:540
231939963,2cyclictest25556-21sh00:32:590
231939963,2cyclictest23174-21grep20:20:010
231939963,2cyclictest14787-21sh00:06:170
231939963,2cyclictest1-21systemd22:40:180
231939963,1cyclictest0-21swapper/000:16:230
231939962,3cyclictest8855-21ntp_kernel_err22:25:160
231939962,3cyclictest658-21snmpd23:56:000
231939962,3cyclictest658-21snmpd23:48:150
231939962,3cyclictest658-21snmpd23:25:040
231939962,3cyclictest658-21snmpd23:25:040
231939962,3cyclictest658-21snmpd22:10:090
231939962,3cyclictest658-21snmpd21:40:010
231939962,3cyclictest658-21snmpd21:33:060
231939962,3cyclictest658-21snmpd21:25:340
231939962,3cyclictest658-21snmpd21:25:340
231939962,3cyclictest658-21snmpd20:55:440
231939962,3cyclictest658-21snmpd20:46:200
231939962,3cyclictest658-21snmpd20:36:200
231939962,3cyclictest658-21snmpd20:00:380
231939962,3cyclictest658-21snmpd19:43:430
231939962,3cyclictest658-21snmpd19:35:120
231939962,3cyclictest658-21snmpd19:27:210
231939962,3cyclictest658-21snmpd00:13:240
231939962,3cyclictest304-21systemd-udevd23:11:410
231939962,3cyclictest28871-21cat00:35:120
231939962,3cyclictest275-21systemd-journal22:57:000
231939962,3cyclictest15205-21cat21:50:140
231939962,1cyclictest0-21swapper/023:40:530
231939962,1cyclictest0-21swapper/023:06:080
231939962,1cyclictest0-21swapper/022:50:110
231939962,1cyclictest0-21swapper/022:30:460
231939962,1cyclictest0-21swapper/022:18:080
231939960,5cyclictest21775-21ssh21:15:110
231939960,0cyclictest0-21swapper/019:20:100
20222260,0sleep10-21swapper/122:31:591
232069953,1cyclictest31376-21cat20:35:183
232069952,3cyclictest0-21swapper/321:30:163
232069952,2cyclictest738-21cat19:30:123
232069952,2cyclictest7182-21ssh22:05:103
232069952,2cyclictest6978-21df_inode20:55:123
232069952,2cyclictest658-21snmpd19:50:143
232069952,2cyclictest5528-21cat19:40:113
232069952,2cyclictest30534-21seq21:20:123
232069952,2cyclictest27930-21cpu20:30:103
232069952,2cyclictest21849-21cat20:15:173
232069952,2cyclictest20112-21systemctl20:10:193
232069951,3cyclictest275-21systemd-journal19:25:073
232069950,5cyclictest0-21swapper/319:11:203
232069950,3cyclictest275-21systemd-journal19:45:083
232069950,0cyclictest0-21swapper/319:21:183
232019952,2cyclictest11173-21cpuspeed_turbos21:05:122
231989953,1cyclictest19911-21sh00:10:081
231989952,2cyclictest8231-21taskset20:56:011
231989952,2cyclictest7814-21ssh22:25:121
231989952,2cyclictest658-21snmpd20:02:431
231989952,2cyclictest4072-21pmu-power19:35:161
231989952,2cyclictest29065-21awk00:35:141
231989952,2cyclictest19170-21cat20:10:141
231989952,2cyclictest18247-21expr23:10:121
231989952,2cyclictest16364-21ssh22:10:161
231989952,2cyclictest12652-21ls00:05:141
231989951,3cyclictest884-21ntp_states20:40:161
231989951,3cyclictest658-21snmpd23:45:111
231989951,3cyclictest658-21snmpd23:20:111
231989951,3cyclictest5035-21cat20:50:131
231989951,3cyclictest3177-21sed20:45:171
231989951,3cyclictest23139-21/usr/sbin/munin21:55:161
231989951,3cyclictest1-21systemd22:35:061
231989951,2cyclictest658-21snmpd23:00:011
231989950,4cyclictest3948-21rm00:20:071
231939953,1cyclictest9230-21forks21:00:120
231939953,1cyclictest0-21swapper/021:10:030
231939952,2cyclictest658-21snmpd21:05:030
231939952,2cyclictest658-21snmpd20:40:110
231939952,2cyclictest658-21snmpd20:05:020
231939952,2cyclictest5617-21date00:20:170
231939952,2cyclictest5048-21cat20:50:140
231939952,2cyclictest27856-21taskset20:30:020
231939952,2cyclictest27436-21grep19:15:200
231939952,2cyclictest25850-21grep20:25:130
231939952,2cyclictest23551-21cstates21:55:150
231939952,2cyclictest19638-21cat20:10:160
231939952,2cyclictest13206-21ntpq19:55:160
231939952,2cyclictest12-21ksoftirqd/021:45:120
231939952,2cyclictest1035-21cut19:30:130
231939951,3cyclictest23580-21expr19:10:120
231939951,3cyclictest23432-21find20:20:120
231939950,2cyclictest32448-21ssh22:20:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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