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2026-04-18 - 13:23
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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 Apr 18, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
251482307257,41sleep10-21swapper/119:08:141
250922296271,16sleep20-21swapper/219:07:302
249982277249,19sleep30-21swapper/319:06:183
249682258228,19sleep00-21swapper/019:05:560
326982670,0sleep30-21swapper/322:39:123
147892650,0sleep20-21swapper/223:27:002
287862610,0sleep00-21swapper/019:15:120
290312600,0sleep20-21swapper/221:37:162
169182600,0sleep20-21swapper/221:30:112
99342590,0sleep20-21swapper/221:45:182
108972590,0sleep10-21swapper/121:25:541
297552580,0sleep10-21swapper/121:57:341
172882580,0sleep2271rcuc/223:09:142
182972570,0sleep00-21swapper/023:10:010
287942540,0sleep122-21ksoftirqd/121:17:211
29112210,1sleep22866-21idleruntime-cro00:00:002
63302180,0sleep30-21swapper/321:23:453
318662170,0sleep00-21swapper/021:59:130
25384991411,2cyclictest12-21ksoftirqd/021:40:010
160862130,0sleep30-21swapper/300:07:183
280722100,1sleep028071-21rm23:55:130
253979997,1cyclictest34-21ksoftirqd/320:40:003
26080280,0sleep20-21swapper/221:55:162
253979981,2cyclictest141rcu_preempt21:00:113
253929983,3cyclictest275-21systemd-journal19:25:012
253929983,3cyclictest275-21systemd-journal19:25:012
253929981,4cyclictest32618-21idleruntime-cro20:35:002
253929981,2cyclictest9160-21apt-get22:05:132
17416280,1sleep017419-21latency_hist22:30:010
253979976,1cyclictest34-21ksoftirqd/323:40:013
253979973,3cyclictest658-21snmpd22:43:493
253979973,3cyclictest658-21snmpd19:50:323
253979973,3cyclictest275-21systemd-journal23:00:003
253979973,3cyclictest20087-21ntpq23:30:163
253929976,1cyclictest16341-21ssh23:48:002
253929976,1cyclictest0-21swapper/200:12:312
253929975,1cyclictest1469-21ssh23:39:192
253929974,2cyclictest27563-21cron19:15:022
253929973,3cyclictest658-21snmpd20:39:332
253929973,3cyclictest504-21dbus-daemon20:45:002
253929970,6cyclictest15783-21diskmemload21:20:012
253889975,1cyclictest32316-21ssh22:38:551
253889973,3cyclictest674-21lldpd21:23:281
253889973,3cyclictest504-21dbus-daemon23:16:261
253889973,3cyclictest275-21systemd-journal20:40:481
253889973,2cyclictest275-21systemd-journal20:37:511
253889973,2cyclictest275-21systemd-journal19:15:321
253889972,3cyclictest275-21systemd-journal19:55:391
253889970,3cyclictest28200-21hddtemp_smartct23:55:141
253849975,1cyclictest12-21ksoftirqd/000:40:000
253849973,3cyclictest275-21systemd-journal22:16:070
253849973,1cyclictest0-21swapper/000:18:310
253849972,3cyclictest8691-21idleruntime-cro22:05:000
2526270,0sleep30-21swapper/323:59:463
12051270,0sleep20-21swapper/222:45:372
30039260,0sleep20-21swapper/222:37:072
253979965,1cyclictest34-21ksoftirqd/320:15:003
253979965,1cyclictest34-21ksoftirqd/319:15:023
253979963,2cyclictest7626-21ssh22:04:123
253979963,2cyclictest504-21dbus-daemon20:00:003
253979963,2cyclictest3773-21sort23:00:203
253979963,2cyclictest32646-21sh00:17:283
253979963,2cyclictest3232-21cups-browsed00:00:183
253979963,2cyclictest2980-21ssh21:40:503
253979963,2cyclictest27688-21cut23:15:143
253979963,2cyclictest27512-21sshd20:20:443
253979963,2cyclictest27011-21ssh00:14:273
253979963,2cyclictest26294-21uniq22:15:143
253979963,2cyclictest22685-21ssh22:52:313
253979963,2cyclictest21568-21ssh22:12:063
253979963,2cyclictest17315-21sh23:29:003
253979963,2cyclictest13606-21ssh23:45:493
253979963,2cyclictest12801-21sh21:27:223
253979962,3cyclictest658-21snmpd22:33:493
253979962,3cyclictest658-21snmpd20:56:253
253979962,3cyclictest658-21snmpd19:10:263
253979962,3cyclictest658-21snmpd00:31:403
253979962,3cyclictest5185-21expr20:45:123
253979962,3cyclictest4071-21sensors_temp23:20:173
253979962,3cyclictest3254-21diskstats23:40:133
253979962,3cyclictest2274-21cat22:20:143
253979962,3cyclictest19651-21sshd21:51:033
253979962,3cyclictest16533-21expr21:10:123
253979962,1cyclictest0-21swapper/323:10:163
253979962,1cyclictest0-21swapper/323:05:263
253979962,1cyclictest0-21swapper/300:37:433
253979961,0cyclictest141rcu_preempt22:45:103
253979960,6cyclictest0-21swapper/321:56:383
253979960,6cyclictest0-21swapper/321:32:123
253979960,6cyclictest0-21swapper/300:25:183
253979960,5cyclictest4249-21awk19:30:163
253979960,4cyclictest275-21systemd-journal22:26:193
253979960,3cyclictest14775-21ssh21:48:393
253979960,0cyclictest0-21swapper/321:39:043
253979960,0cyclictest0-21swapper/321:15:163
253929966,0cyclictest0-21swapper/223:17:332
253929966,0cyclictest0-21swapper/200:25:162
253929963,2cyclictest7274-21ssh22:03:552
253929963,2cyclictest6953-21ssh22:23:132
253929963,2cyclictest658-21snmpd00:31:072
253929963,2cyclictest504-21dbus-daemon23:03:302
253929963,2cyclictest3146-21df23:20:122
253929963,2cyclictest28841-21expr00:35:122
253929963,2cyclictest28-21ksoftirqd/222:55:182
253929963,2cyclictest22472-21sh22:32:372
253929963,2cyclictest19652-21grep23:30:142
253929963,2cyclictest16448-21wc21:10:112
253929963,2cyclictest12457-21needreboot21:00:162
253929963,2cyclictest1169-21grep21:40:122
253929963,2cyclictest0-21swapper/200:06:072
253929962,3cyclictest658-21snmpd22:43:342
253929962,3cyclictest658-21snmpd22:25:452
253929962,3cyclictest658-21snmpd20:14:302
253929962,3cyclictest658-21snmpd20:08:542
253929962,3cyclictest658-21snmpd20:01:562
253929962,3cyclictest658-21snmpd19:41:052
253929962,3cyclictest658-21snmpd19:37:292
253929962,3cyclictest504-21dbus-daemon22:10:012
253929962,3cyclictest2893-21dpkg19:30:012
253929962,3cyclictest275-21systemd-journal22:51:132
253929962,3cyclictest275-21systemd-journal19:51:542
253929962,3cyclictest25177-21cat21:15:152
253929962,3cyclictest23753-21cat20:15:112
253929962,3cyclictest15302-21sshd21:29:212
253929962,3cyclictest1104-21ssh22:20:002
253929961,3cyclictest275-21systemd-journal20:25:012
253929960,6cyclictest0-21swapper/223:50:012
253929960,5cyclictest19800-21ntp_states23:10:162
253889966,0cyclictest0-21swapper/121:49:511
253889965,1cyclictest5078-21kworker/1:222:22:301
253889964,1cyclictest27052-21df22:55:141
253889963,2cyclictest7511-21sh20:50:101
253889963,2cyclictest658-21snmpd22:50:131
253889963,2cyclictest6084-21ssh22:02:591
253889963,2cyclictest504-21dbus-daemon00:12:221
253889963,2cyclictest30444-21ssh23:36:361
253889963,2cyclictest28422-21apt-get20:25:101
253889963,2cyclictest22656-21ssh23:51:331
253889963,2cyclictest19687-21sshd21:51:051
253889963,2cyclictest17424-21ssh23:09:211
253889963,1cyclictest0-21swapper/123:03:091
253889962,3cyclictest9926-21date19:45:021
253889962,3cyclictest671-21ntpd20:55:151
253889962,3cyclictest658-21snmpd23:48:331
253889962,3cyclictest658-21snmpd23:41:581
253889962,3cyclictest658-21snmpd23:10:381
253889962,3cyclictest658-21snmpd22:09:331
253889962,3cyclictest658-21snmpd21:09:011
253889962,3cyclictest658-21snmpd21:01:371
253889962,3cyclictest658-21snmpd20:20:241
253889962,3cyclictest658-21snmpd20:19:511
253889962,3cyclictest658-21snmpd20:11:121
253889962,3cyclictest658-21snmpd19:46:231
253889962,3cyclictest658-21snmpd19:28:591
253889962,3cyclictest658-21snmpd00:28:141
253889962,3cyclictest5756-21cat19:35:121
253889962,3cyclictest275-21systemd-journal23:20:211
253889962,3cyclictest2545-21cat22:40:161
253889962,3cyclictest21109-21sshd20:09:221
253889962,3cyclictest1-21systemd22:10:011
253889962,1cyclictest0-21swapper/122:30:151
253889962,1cyclictest0-21swapper/121:34:081
253889961,3cyclictest275-21systemd-journal20:30:441
253889960,6cyclictest0-21swapper/121:40:561
253889960,6cyclictest0-21swapper/121:35:011
253889960,5cyclictest5873-21rm00:00:411
253889960,4cyclictest23975-21dump-pmu-power21:15:001
253889960,0cyclictest0-21swapper/100:24:311
253889960,0cyclictest0-21swapper/100:15:511
253849963,2cyclictest7333-21cat20:50:100
253849963,2cyclictest658-21snmpd23:52:240
253849963,2cyclictest658-21snmpd23:12:560
253849963,2cyclictest658-21snmpd20:49:160
253849963,2cyclictest5870-21sh21:43:050
253849963,2cyclictest3993-21head23:40:180
253849963,2cyclictest32210-21wc21:20:000
253849963,2cyclictest2745-21sshd21:20:550
253849963,2cyclictest2626-21ssh23:20:070
253849962,3cyclictest6999-21seq00:21:210
253849962,3cyclictest658-21snmpd23:18:050
253849962,3cyclictest658-21snmpd22:55:430
253849962,3cyclictest658-21snmpd21:29:560
253849962,3cyclictest658-21snmpd21:10:160
253849962,3cyclictest658-21snmpd20:43:240
253849962,3cyclictest658-21snmpd20:24:250
253849962,3cyclictest658-21snmpd20:04:230
253849962,3cyclictest658-21snmpd00:26:070
253849962,3cyclictest658-21snmpd00:14:430
253849962,3cyclictest658-21snmpd00:07:450
253849962,3cyclictest20350-21cpu00:30:120
253849962,3cyclictest20171-21ntpq20:05:160
253849962,3cyclictest19387-21cat23:30:120
253849962,3cyclictest18387-21expr22:50:120
253849962,3cyclictest14825-21df_inode19:55:130
253849962,3cyclictest11607-21ls23:25:150
253849962,1cyclictest0-21swapper/022:38:480
253849962,1cyclictest0-21swapper/022:24:240
253849962,1cyclictest0-21swapper/021:50:400
253849962,1cyclictest0-21swapper/021:30:370
253849962,1cyclictest0-21swapper/000:04:550
253849960,5cyclictest275-21systemd-journal20:15:200
15037260,0sleep30-21swapper/321:05:193
253979954,1cyclictest34-21ksoftirqd/320:25:003
253979952,2cyclictest7707-21sed20:50:113
253979952,2cyclictest503-21rs:main3
253979952,2cyclictest31315-21cat20:30:153
253979952,2cyclictest31241-21expr19:20:123
253979952,2cyclictest31241-21expr19:20:123
253979951,3cyclictest658-21snmpd20:40:123
253979951,3cyclictest658-21snmpd20:15:333
253979951,3cyclictest3879-21rm00:20:073
253979951,3cyclictest17985-21expr20:00:193
253979951,3cyclictest1-21systemd20:05:193
253979951,2cyclictest275-21systemd-journal22:05:033
253979951,1cyclictest141rcu_preempt19:45:113
253979950,5cyclictest1374-21gltestperf19:25:143
253979950,3cyclictest275-21systemd-journal19:35:373
253979950,1cyclictest0-21swapper/319:40:133
253929953,1cyclictest663-21runrttasks19:55:022
253929952,2cyclictest658-21snmpd20:55:052
253929952,2cyclictest658-21snmpd19:45:092
253929952,2cyclictest5157-21expr20:45:132
253929952,2cyclictest3762-21rm00:20:002
253929952,2cyclictest3497-21ssh00:00:032
253929952,2cyclictest28761-21ssh00:15:152
253929952,2cyclictest26190-21cat20:20:132
253929952,2cyclictest17639-21tail21:50:152
253929951,3cyclictest7103-21/usr/sbin/munin20:50:102
253929951,3cyclictest658-21snmpd19:30:082
253929951,3cyclictest28528-21awk19:15:012
253929951,3cyclictest2834-21apt-get23:40:132
253929950,4cyclictest13788-21/usr/sbin/munin21:05:182
253889953,2cyclictest28614-21cpuspeed_turbos00:35:131
253889953,1cyclictest16967-21expr20:00:121
253889952,2cyclictest9518-21ssh22:25:061
253889952,2cyclictest658-21snmpd23:25:021
253889952,2cyclictest658-21snmpd20:46:151
253889952,2cyclictest658-21snmpd19:20:021
253889952,2cyclictest658-21snmpd19:20:021
253889952,2cyclictest3985-21cat19:30:141
253889952,2cyclictest25844-21cat19:10:131
253889952,2cyclictest20648-21expr00:30:141
253889952,2cyclictest10396-21forks22:45:121
253889951,3cyclictest671-21ntpd23:30:171
253889950,4cyclictest12785-21gltestperf19:50:141
253889950,4cyclictest11965-21cat00:05:111
253889950,3cyclictest275-21systemd-journal22:15:041
253849953,1cyclictest10393-21df_inode19:45:120
253849953,0cyclictest141rcu_preempt19:10:130
253849952,2cyclictest9734-21ssh22:45:010
253849952,2cyclictest9349-21/usr/sbin/munin20:55:100
253849952,2cyclictest9072-21sh22:05:080
253849952,2cyclictest6510-21ntp_states19:35:180
253849952,2cyclictest560-21gdbus20:10:060
253849952,2cyclictest31226-21ls19:20:110
253849952,2cyclictest31226-21ls19:20:110
253849952,2cyclictest29238-21ssh23:35:380
253849952,2cyclictest28189-21apt-config20:25:010
253849952,2cyclictest2741-21expr23:00:120
253849952,2cyclictest18154-21expr22:30:130
253849952,2cyclictest13019-21load19:50:150
253849952,1cyclictest141rcu_preempt21:00:110
253849952,1cyclictest0-21swapper/022:40:030
253849951,3cyclictest8463-21cat19:40:150
253849951,3cyclictest658-21snmpd21:05:160
253849951,3cyclictest658-21snmpd19:25:110
253849951,3cyclictest3729-21/usr/sbin/munin19:30:140
253849951,3cyclictest30700-21cat20:30:130
253849951,3cyclictest275-21systemd-journal23:45:000
253849951,2cyclictest275-21systemd-journal21:45:030
253849950,3cyclictest275-21systemd-journal22:10:010
253849950,3cyclictest2065-21sshd20:35:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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