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2026-06-17 - 11:29
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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 Wed Jun 17, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
236042278248,20sleep20-21swapper/219:08:012
235472275223,42sleep30-21swapper/319:07:173
234062269241,19sleep10-21swapper/119:05:421
236702266236,19sleep00-21swapper/019:08:500
116782590,1sleep20-21swapper/222:45:192
173622540,0sleep317363-21ssh21:30:193
296372530,0sleep20-21swapper/221:38:072
187432190,0sleep20-21swapper/200:08:242
262952150,0sleep10-21swapper/122:35:051
59702140,0sleep00-21swapper/000:00:160
270942140,0sleep10-21swapper/121:36:091
136422130,0sleep00-21swapper/022:46:250
90712110,0sleep20-21swapper/222:05:022
299392100,2sleep223858-21cyclictest21:19:052
191692100,1sleep1211rcuc/122:50:141
238709992,4cyclictest3185-21dump-pmu-power19:35:021
238749985,2cyclictest28-21ksoftirqd/222:25:002
238749980,5cyclictest16257-21basename21:50:012
12113280,0sleep00-21swapper/023:25:120
25386270,6sleep214561-21diskmemload22:34:342
238779973,3cyclictest658-21snmpd21:23:353
238779973,3cyclictest504-21dbus-daemon23:16:483
238779973,3cyclictest275-21systemd-journal23:41:453
238779973,3cyclictest275-21systemd-journal20:50:333
238749972,2cyclictest24119-21idleruntime-cro20:20:002
238709973,3cyclictest658-21snmpd20:57:521
238709973,3cyclictest560-21gdbus21:20:011
238709973,3cyclictest17764-21ntpq21:50:171
238709973,3cyclictest14874-21cron20:00:011
238669974,2cyclictest275-21systemd-journal21:46:350
238669974,2cyclictest275-21systemd-journal21:27:320
238669973,3cyclictest658-21snmpd20:06:220
238669973,3cyclictest658-21snmpd19:11:490
238669973,3cyclictest560-21gdbus19:50:010
238669973,3cyclictest560-21gdbus00:00:010
238669973,3cyclictest504-21dbus-daemon21:00:000
238669973,2cyclictest275-21systemd-journal23:44:190
238669973,1cyclictest0-21swapper/021:18:460
238669971,5cyclictest22770-21gltestperf00:30:150
20725270,0sleep30-21swapper/322:11:283
10947270,0sleep10-21swapper/122:45:141
10227270,1sleep00-21swapper/022:45:000
238779966,0cyclictest0-21swapper/322:20:383
238779966,0cyclictest0-21swapper/319:25:223
238779963,2cyclictest868-21ssh22:58:503
238779963,2cyclictest7139-21rm23:21:513
238779963,2cyclictest658-21snmpd00:38:053
238779963,2cyclictest6417-21latency19:40:153
238779963,2cyclictest5910-21sh22:02:473
238779963,2cyclictest5290-21sh00:00:123
238779963,2cyclictest504-21dbus-daemon22:41:163
238779963,2cyclictest504-21dbus-daemon19:50:023
238779963,2cyclictest504-21dbus-daemon19:50:013
238779963,2cyclictest504-21dbus-daemon19:45:013
238779963,2cyclictest28576-21ssh22:16:103
238779963,2cyclictest27321-21diskstats19:15:143
238779963,2cyclictest24515-21ssh23:12:563
238779963,2cyclictest20049-21sshd21:51:343
238779963,2cyclictest17294-21rm00:07:153
238779963,2cyclictest11206-21awk22:25:193
238779963,1cyclictest0-21swapper/323:58:053
238779963,1cyclictest0-21swapper/300:24:103
238779962,3cyclictest9407-21date21:45:183
238779962,3cyclictest658-21snmpd22:05:403
238779962,3cyclictest658-21snmpd21:58:193
238779962,3cyclictest658-21snmpd21:41:063
238779962,3cyclictest658-21snmpd21:36:473
238779962,3cyclictest658-21snmpd21:01:223
238779962,3cyclictest658-21snmpd20:37:163
238779962,3cyclictest4021-21cat20:45:153
238779962,3cyclictest26740-21expr22:35:143
238779962,3cyclictest24117-21cat21:15:163
238779962,3cyclictest18356-21cat20:05:163
238779962,3cyclictest13885-21ntpq19:55:183
238779962,3cyclictest12567-21/usr/sbin/munin21:05:143
238779962,3cyclictest11284-21cat22:45:153
238779962,2cyclictest275-21systemd-journal22:34:353
238779962,1cyclictest0-21swapper/323:47:363
238779961,3cyclictest663-21runrttasks20:00:023
238779961,2cyclictest1-21systemd21:25:443
238779961,1cyclictest0-21swapper/323:25:193
238779960,6cyclictest0-21swapper/323:08:303
238779960,6cyclictest0-21swapper/300:10:343
238779960,5cyclictest4531-21grep23:00:223
238779960,5cyclictest15149-21cpuspeed_turbos21:10:123
238779960,2cyclictest5206-21idleruntime-cro00:20:013
238749966,0cyclictest0-21swapper/223:53:202
238749966,0cyclictest0-21swapper/219:10:032
238749963,2cyclictest8677-21cat21:25:172
238749963,2cyclictest6813-21readlink19:40:192
238749963,2cyclictest658-21snmpd21:31:092
238749963,2cyclictest658-21snmpd19:29:232
238749963,2cyclictest504-21dbus-daemon23:43:032
238749963,2cyclictest504-21dbus-daemon23:37:132
238749963,2cyclictest504-21dbus-daemon23:30:062
238749963,2cyclictest30056-21tr00:15:132
238749963,2cyclictest28-21ksoftirqd/219:15:012
238749963,2cyclictest275-21systemd-journal22:39:352
238749963,2cyclictest275-21systemd-journal19:35:272
238749963,2cyclictest25214-21ssh00:31:222
238749963,2cyclictest25051-21cat20:20:142
238749963,2cyclictest21033-21sh22:50:472
238749963,2cyclictest1899-21ssh21:20:482
238749963,2cyclictest1830-21ssh00:36:592
238749963,2cyclictest12855-21expr21:05:132
238749963,2cyclictest1-21systemd20:40:212
238749963,1cyclictest0-21swapper/221:55:392
238749962,3cyclictest674-21lldpd20:02:122
238749962,3cyclictest658-21snmpd23:25:092
238749962,3cyclictest658-21snmpd23:12:212
238749962,3cyclictest658-21snmpd22:25:012
238749962,3cyclictest658-21snmpd22:16:582
238749962,3cyclictest658-21snmpd21:51:362
238749962,3cyclictest658-21snmpd21:10:052
238749962,3cyclictest658-21snmpd20:59:042
238749962,3cyclictest658-21snmpd20:49:072
238749962,3cyclictest658-21snmpd20:30:282
238749962,3cyclictest658-21snmpd20:10:212
238749962,3cyclictest658-21snmpd19:52:092
238749962,3cyclictest658-21snmpd19:52:082
238749962,3cyclictest658-21snmpd19:46:392
238749962,3cyclictest658-21snmpd00:11:052
238749962,3cyclictest5606-21cat00:00:142
238749962,3cyclictest4305-21cat23:20:142
238749962,3cyclictest3064-21cat22:40:162
238749962,3cyclictest28030-21expr23:15:122
238749962,3cyclictest24220-21ssh22:14:122
238749962,3cyclictest0-21swapper/222:56:332
238749962,1cyclictest0-21swapper/223:06:152
238749962,1cyclictest0-21swapper/222:02:512
238749960,6cyclictest0-21swapper/221:43:322
238749960,6cyclictest0-21swapper/200:20:162
238749960,3cyclictest141rcu_preempt23:00:142
238749960,3cyclictest141rcu_preempt20:35:122
238749960,0cyclictest0-21swapper/219:55:172
238709966,0cyclictest0-21swapper/123:40:021
238709965,1cyclictest4910-21sh22:21:291
238709963,2cyclictest658-21snmpd23:57:111
238709963,2cyclictest658-21snmpd23:27:391
238709963,2cyclictest658-21snmpd19:27:291
238709963,2cyclictest3286-21needreboot22:40:181
238709963,2cyclictest275-21systemd-journal22:16:271
238709963,2cyclictest22-21ksoftirqd/120:25:011
238709963,2cyclictest21274-21ssh22:31:231
238709963,2cyclictest19591-21ssh22:10:361
238709963,2cyclictest13000-21rm22:06:531
238709963,2cyclictest11031-21ntp_states22:25:201
238709963,2cyclictest10339-21rm21:25:571
238709962,3cyclictest8033-21date21:45:011
238709962,3cyclictest658-21snmpd23:30:151
238709962,3cyclictest658-21snmpd23:06:411
238709962,3cyclictest658-21snmpd20:45:431
238709962,3cyclictest658-21snmpd20:42:371
238709962,3cyclictest658-21snmpd20:28:011
238709962,3cyclictest658-21snmpd19:49:171
238709962,3cyclictest658-21snmpd19:16:311
238709962,3cyclictest658-21snmpd00:28:101
238709962,3cyclictest5371-21tune2fs00:00:121
238709962,3cyclictest504-21dbus-daemon23:25:001
238709962,3cyclictest3943-21date23:40:001
238709962,3cyclictest27728-21cat23:15:121
238709961,4cyclictest22-21ksoftirqd/119:10:541
238709961,4cyclictest11834-11brltty00:07:191
238709961,4cyclictest0-21swapper/123:00:191
238709961,3cyclictest11703-21sshd21:01:081
238709960,6cyclictest0-21swapper/123:45:201
238709960,6cyclictest0-21swapper/123:13:561
238709960,6cyclictest0-21swapper/100:12:091
238709960,5cyclictest26175-21grep21:55:181
238709960,5cyclictest14543-21cron21:10:001
238709960,0cyclictest0-21swapper/121:46:441
238709960,0cyclictest0-21swapper/100:30:401
238669963,2cyclictest658-21snmpd23:20:510
238669963,2cyclictest491-21systemd-logind23:00:070
238669963,2cyclictest25108-21sh22:34:200
238669963,2cyclictest17664-21ssh21:11:010
238669963,2cyclictest12-21ksoftirqd/023:50:160
238669963,2cyclictest11472-21ssh22:05:430
238669963,1cyclictest0-21swapper/021:42:210
238669962,3cyclictest658-21snmpd23:36:430
238669962,3cyclictest658-21snmpd23:30:040
238669962,3cyclictest658-21snmpd23:10:530
238669962,3cyclictest658-21snmpd22:55:020
238669962,3cyclictest658-21snmpd22:27:130
238669962,3cyclictest658-21snmpd21:31:170
238669962,3cyclictest658-21snmpd21:21:290
238669962,3cyclictest658-21snmpd21:05:230
238669962,3cyclictest658-21snmpd20:51:010
238669962,3cyclictest658-21snmpd20:41:310
238669962,3cyclictest658-21snmpd20:38:130
238669962,3cyclictest658-21snmpd20:20:030
238669962,3cyclictest658-21snmpd20:10:070
238669962,3cyclictest658-21snmpd19:50:440
238669962,3cyclictest658-21snmpd19:50:440
238669962,3cyclictest658-21snmpd00:25:220
238669962,3cyclictest658-21snmpd00:22:460
238669962,3cyclictest275-21systemd-journal19:40:010
238669962,3cyclictest275-21systemd-journal00:11:490
238669962,3cyclictest26332-21basename21:55:180
238669962,3cyclictest22792-21cat20:15:140
238669962,3cyclictest2069-21cat22:00:200
238669962,3cyclictest2059-21df22:20:140
238669962,3cyclictest17467-21cat21:50:150
238669962,3cyclictest13939-21ls19:55:180
238669962,3cyclictest12666-21grep23:45:120
238669962,3cyclictest12029-21cat23:05:170
238669962,1cyclictest0-21swapper/022:35:140
238669962,1cyclictest0-21swapper/000:37:540
238669961,4cyclictest658-21snmpd23:16:020
238669961,4cyclictest0-21swapper/021:35:190
238669960,5cyclictest30305-21/usr/sbin/munin00:15:140
238669960,5cyclictest275-21systemd-journal20:00:560
238779952,2cyclictest658-21snmpd19:10:013
238779952,2cyclictest29477-21expr19:20:103
238779952,2cyclictest29223-21/usr/sbin/munin20:30:133
238779952,2cyclictest28265-21ssh23:35:043
238779952,2cyclictest24956-21gltestperf20:20:143
238779952,2cyclictest22113-21cat20:15:113
238779952,2cyclictest19011-21seq22:50:143
238779952,1cyclictest0-21swapper/323:30:023
238779951,3cyclictest8335-21fw_packets20:55:143
238779951,3cyclictest658-21snmpd19:30:143
238779951,3cyclictest658-21snmpd00:25:023
238779951,3cyclictest3804-21df19:35:133
238779951,3cyclictest275-21systemd-journal20:25:073
238779951,3cyclictest22105-21/usr/sbin/munin00:30:103
238779951,3cyclictest21202-21/usr/sbin/munin23:50:133
238779951,3cyclictest1345-21grep20:40:133
238749953,1cyclictest13851-21ssh00:25:082
238749952,2cyclictest7680-21cat20:55:002
238749952,2cyclictest658-21snmpd19:20:012
238749952,2cyclictest491-21systemd-logind19:30:192
238749952,2cyclictest28183-21chrt20:25:352
238749952,2cyclictest18071-21diskstats20:05:152
238749952,1cyclictest0-21swapper/223:55:202
238749950,4cyclictest28-21ksoftirqd/223:45:112
238749950,4cyclictest10044-21/usr/sbin/munin21:00:092
238709955,0cyclictest0-21swapper/122:00:121
238709953,1cyclictest31608-21apt-config21:20:011
238709952,2cyclictest658-21snmpd00:15:071
238709952,2cyclictest6550-21ntpq20:50:171
238709952,2cyclictest4101-21cat19:35:151
238709952,2cyclictest31713-21cat20:35:151
238709952,2cyclictest31130-21uname00:35:141
238709952,2cyclictest29523-21expr19:20:121
238709952,2cyclictest29479-21cat20:30:151
238709952,2cyclictest22627-21gltestperf20:15:141
238709952,2cyclictest20983-21cat23:50:131
238709952,2cyclictest18180-21tune2fs20:05:151
238709952,2cyclictest15325-21apt-config20:00:011
238709952,1cyclictest0-21swapper/121:30:011
238709951,3cyclictest5784-21/usr/sbin/munin00:20:131
238709951,2cyclictest275-21systemd-journal19:50:021
238709951,2cyclictest275-21systemd-journal19:50:021
238709950,3cyclictest275-21systemd-journal21:10:071
238709950,3cyclictest275-21systemd-journal20:10:571
238709950,3cyclictest26831-21ssh22:55:031
238709950,1cyclictest6626-21ntp_states19:40:171
238669952,2cyclictest658-21snmpd22:10:110
238669952,2cyclictest658-21snmpd19:41:440
238669952,2cyclictest29262-21taskset19:20:110
238669952,2cyclictest26983-21df20:25:130
238669952,2cyclictest26936-21apt-get19:15:130
238669952,2cyclictest26047-21expr22:15:160
238669952,2cyclictest19516-21if_enp4s022:50:160
238669952,2cyclictest12993-21ssh00:05:080
238669951,3cyclictest3674-21ls20:45:120
238669951,3cyclictest32602-21/usr/sbin/munin19:25:200
238669951,3cyclictest29056-21expr20:30:120
238669951,3cyclictest1880-21cat19:30:150
238669951,3cyclictest11393-21ls21:00:180
238779942,1cyclictest19885-21acpi20:10:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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