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2026-07-20 - 06:18
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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 Jul 20, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221722298271,18sleep10-21swapper/119:08:071
222082271240,20sleep00-21swapper/019:08:350
221782271243,18sleep20-21swapper/219:08:122
220702262238,16sleep30-21swapper/319:06:483
234721030,2sleep0141rcu_preempt23:20:200
23572640,0sleep00-21swapper/021:23:320
240682590,0sleep20-21swapper/221:16:362
208292540,0sleep20-21swapper/200:10:442
104972530,0sleep30-21swapper/323:25:203
310052520,0sleep30-21swapper/319:25:193
154532520,0sleep30-21swapper/321:11:223
267402190,0sleep20-21swapper/219:15:212
262052160,0sleep10-21swapper/100:14:541
50532150,0sleep20-21swapper/222:43:222
194572130,0sleep10-21swapper/100:30:121
299262110,0sleep20-21swapper/222:58:332
2240699106,3cyclictest19824-21turbostat20:15:000
224169996,3cyclictest28-21ksoftirqd/221:25:102
224219983,3cyclictest674-21lldpd20:43:543
224219983,3cyclictest674-21lldpd20:43:543
1432280,0sleep00-21swapper/022:20:590
224219975,2cyclictest34-21ksoftirqd/319:25:013
224219974,2cyclictest275-21systemd-journal21:45:293
224219974,2cyclictest275-21systemd-journal20:17:303
224219973,3cyclictest7375-21sshd20:59:293
224219973,3cyclictest275-21systemd-journal21:02:563
224219973,1cyclictest0-21swapper/322:43:033
224219973,1cyclictest0-21swapper/321:35:183
224219972,3cyclictest275-21systemd-journal22:04:453
224219970,5cyclictest275-21systemd-journal21:21:343
224169975,1cyclictest28-21ksoftirqd/221:40:002
224169973,3cyclictest275-21systemd-journal21:57:142
224169972,4cyclictest271rcuc/219:40:002
224169972,3cyclictest275-21systemd-journal22:52:212
224169972,3cyclictest13785-21idleruntime-cro21:50:012
224119976,1cyclictest0-21swapper/122:19:161
224119974,2cyclictest13011-21ssh23:26:591
224119973,3cyclictest658-21snmpd21:40:101
224119973,3cyclictest504-21dbus-daemon23:30:191
224119973,3cyclictest491-21systemd-logind00:00:321
224119973,2cyclictest275-21systemd-journal19:51:141
224069974,2cyclictest504-21dbus-daemon19:50:010
224069974,2cyclictest10926-21dump-pmu-power19:55:010
224069973,3cyclictest658-21snmpd23:30:530
224069973,3cyclictest560-21gdbus21:45:000
224069973,3cyclictest31893-21cron19:30:000
17494270,0sleep00-21swapper/023:10:150
224219966,0cyclictest0-21swapper/323:01:003
224219966,0cyclictest0-21swapper/300:16:043
224219966,0cyclictest0-21swapper/300:06:253
224219964,1cyclictest15462-21apt-get22:30:133
224219964,1cyclictest1544-21/usr/sbin/munin23:40:183
224219963,2cyclictest674-21lldpd22:25:353
224219963,2cyclictest504-21dbus-daemon20:07:293
224219963,2cyclictest29083-21ssh23:36:373
224219963,2cyclictest24183-21ssh00:13:223
224219963,2cyclictest22800-21ssh22:15:023
224219963,2cyclictest22772-21expr21:55:143
224219963,2cyclictest20045-21ssh22:52:143
224219963,2cyclictest15134-21expr22:10:133
224219963,2cyclictest14733-21sh23:08:503
224219963,2cyclictest10670-21ssh22:46:213
224219962,3cyclictest7029-21tune2fs22:05:173
224219962,3cyclictest658-21snmpd23:15:193
224219962,3cyclictest658-21snmpd22:55:243
224219962,3cyclictest658-21snmpd20:35:293
224219962,3cyclictest658-21snmpd20:27:333
224219962,3cyclictest658-21snmpd19:47:363
224219962,3cyclictest658-21snmpd19:34:013
224219962,3cyclictest5410-21ls21:25:133
224219962,3cyclictest31200-21grep21:40:173
224219962,3cyclictest27858-21cat23:55:193
224219962,3cyclictest275-21systemd-journal21:06:303
224219962,3cyclictest21753-21ntpq21:15:183
224219962,3cyclictest18449-21expr20:10:153
224219962,3cyclictest18447-21cat23:50:123
224219962,3cyclictest17490-21cat23:30:123
224219962,1cyclictest0-21swapper/300:02:073
224219961,4cyclictest8961-21apt-get19:50:123
224219961,4cyclictest11118-21ssh00:25:113
224219961,2cyclictest504-21dbus-daemon00:35:133
224219960,6cyclictest0-21swapper/323:11:003
224219960,6cyclictest0-21swapper/322:35:373
224219960,6cyclictest0-21swapper/321:54:293
224219960,6cyclictest0-21swapper/320:04:323
224219960,6cyclictest0-21swapper/300:21:073
224219960,2cyclictest31287-21/usr/sbin/munin22:20:143
224219960,2cyclictest20673-21smart_sda00:30:203
224169966,0cyclictest0-21swapper/223:49:112
224169966,0cyclictest0-21swapper/222:12:432
224169966,0cyclictest0-21swapper/200:37:462
224169963,2cyclictest9074-21ssh23:25:092
224169963,2cyclictest8722-21ssh00:04:052
224169963,2cyclictest658-21snmpd23:06:462
224169963,2cyclictest5579-21cpuspeed_turbos20:55:142
224169963,2cyclictest29381-21cat20:35:142
224169963,2cyclictest22156-21rm23:13:112
224169963,2cyclictest16334-21chrt22:30:172
224169963,2cyclictest15961-21/usr/sbin/munin21:50:212
224169963,2cyclictest13872-21memory21:30:172
224169962,3cyclictest658-21snmpd22:04:512
224169962,3cyclictest658-21snmpd21:22:092
224169962,3cyclictest658-21snmpd20:49:322
224169962,3cyclictest658-21snmpd20:31:022
224169962,3cyclictest658-21snmpd20:07:232
224169962,3cyclictest658-21snmpd19:41:242
224169962,3cyclictest658-21snmpd19:31:302
224169962,3cyclictest658-21snmpd19:11:402
224169962,3cyclictest658-21snmpd00:20:352
224169962,3cyclictest658-21snmpd00:18:212
224169962,3cyclictest658-21snmpd00:09:332
224169962,3cyclictest30909-21ntpq21:40:172
224169962,3cyclictest26261-21fw_packets23:35:142
224169962,3cyclictest20430-21expr20:15:132
224169962,3cyclictest11676-21cut19:55:152
224169962,3cyclictest10542-21sed21:05:162
224169962,1cyclictest28-21ksoftirqd/223:30:142
224169962,1cyclictest0-21swapper/223:42:182
224169962,1cyclictest0-21swapper/222:46:202
224169961,3cyclictest275-21systemd-journal19:21:352
224169960,6cyclictest0-21swapper/223:15:312
224169960,6cyclictest0-21swapper/223:02:172
224169960,6cyclictest0-21swapper/222:15:432
224169960,6cyclictest0-21swapper/200:32:142
224169960,2cyclictest13499-21ntp_states21:10:192
224169960,1cyclictest141rcu_preempt23:55:122
224119966,0cyclictest0-21swapper/100:38:471
224119965,1cyclictest22-21ksoftirqd/122:55:021
224119963,2cyclictest6652-21sh00:21:531
224119963,2cyclictest663-21runrttasks00:05:401
224119963,2cyclictest658-21snmpd21:33:251
224119963,2cyclictest658-21snmpd20:33:321
224119963,2cyclictest6068-21awk21:45:131
224119963,2cyclictest32751-21ssh00:18:361
224119963,2cyclictest32488-21ssh22:00:241
224119963,2cyclictest27713-21sh23:35:331
224119963,2cyclictest25041-21apt-get23:15:111
224119963,2cyclictest23310-21cat19:10:161
224119963,2cyclictest22383-21taskset21:55:101
224119963,2cyclictest16823-21ssh00:28:261
224119963,2cyclictest13764-21rm22:09:351
224119963,2cyclictest1-21systemd00:00:011
224119963,1cyclictest0-21swapper/122:58:411
224119962,3cyclictest8913-21df_inode23:05:141
224119962,3cyclictest7670-21fschecks_time22:25:131
224119962,3cyclictest6941-21cstates19:45:111
224119962,3cyclictest658-21snmpd23:03:331
224119962,3cyclictest658-21snmpd22:36:031
224119962,3cyclictest658-21snmpd22:30:261
224119962,3cyclictest658-21snmpd21:22:361
224119962,3cyclictest658-21snmpd20:09:561
224119962,3cyclictest658-21snmpd19:58:171
224119962,3cyclictest658-21snmpd19:30:391
224119962,3cyclictest4598-21cat20:50:201
224119962,3cyclictest275-21systemd-journal21:50:091
224119962,3cyclictest275-21systemd-journal20:02:541
224119962,3cyclictest2702-21tune2fs19:35:151
224119962,3cyclictest21732-21ntp_kernel_pll_21:15:171
224119962,3cyclictest19248-11brltty23:51:171
224119962,3cyclictest13640-21cut21:10:191
224119962,1cyclictest0-21swapper/123:13:111
224119960,6cyclictest0-21swapper/122:46:061
224119960,6cyclictest0-21swapper/121:35:501
224119960,5cyclictest32028-21cpuspeed_turbos22:40:131
224119960,5cyclictest3174-21cat20:50:011
224119960,5cyclictest16312-21wc22:10:191
224069964,1cyclictest32319-21unixbench_multi22:00:200
224069963,2cyclictest658-21snmpd23:26:530
224069963,2cyclictest658-21snmpd22:30:090
224069963,2cyclictest658-21snmpd21:54:260
224069963,2cyclictest658-21snmpd20:59:230
224069963,2cyclictest6477-21latency_hist19:45:010
224069963,2cyclictest6310-21ssh22:05:020
224069963,2cyclictest504-21dbus-daemon00:05:060
224069963,2cyclictest3561-21ssh23:40:330
224069963,2cyclictest32455-21kworker/u8:100:00:000
224069963,2cyclictest28422-21dump-pmu-power21:19:590
224069963,2cyclictest27731-21apt-get19:20:130
224069963,2cyclictest275-21systemd-journal20:35:010
224069963,2cyclictest2667-21diskstats19:35:160
224069963,2cyclictest25599-21rm21:37:060
224069963,2cyclictest24863-21ssh23:15:040
224069963,2cyclictest19486-21memory00:10:160
224069963,2cyclictest19165-21chrt21:33:490
224069963,2cyclictest14945-21rm23:08:590
224069963,2cyclictest11524-21df_inode00:25:110
224069962,3cyclictest658-21snmpd23:57:370
224069962,3cyclictest658-21snmpd23:37:050
224069962,3cyclictest658-21snmpd22:50:120
224069962,3cyclictest658-21snmpd22:46:570
224069962,3cyclictest658-21snmpd22:42:130
224069962,3cyclictest658-21snmpd21:57:290
224069962,3cyclictest658-21snmpd21:29:250
224069962,3cyclictest658-21snmpd21:11:000
224069962,3cyclictest658-21snmpd21:06:110
224069962,3cyclictest658-21snmpd20:41:480
224069962,3cyclictest658-21snmpd20:41:480
224069962,3cyclictest658-21snmpd20:19:190
224069962,3cyclictest658-21snmpd19:55:280
224069962,3cyclictest658-21snmpd19:17:060
224069962,3cyclictest658-21snmpd00:38:450
224069962,3cyclictest658-21snmpd00:21:260
224069962,3cyclictest658-21snmpd00:17:020
224069962,3cyclictest29658-21cat20:35:160
224069962,3cyclictest23966-21sshd20:21:210
224069962,3cyclictest14077-21cat20:00:130
224069962,2cyclictest30880-1kworker/u9:222:35:080
224069962,1cyclictest22573-21munin-run22:15:010
224069960,6cyclictest0-21swapper/000:32:540
224069960,4cyclictest8106-21rm21:45:370
224069960,3cyclictest5231-21rm23:03:060
224219952,2cyclictest658-21snmpd19:15:373
224219952,2cyclictest5177-21cat19:40:163
224219952,2cyclictest22927-21cat19:10:133
224219952,2cyclictest22592-21expr20:20:133
224219952,2cyclictest1675-21if_enp4s020:45:123
224219952,2cyclictest12962-21ssh21:30:123
224219951,3cyclictest815-21ssh23:20:093
224219951,3cyclictest658-21snmpd19:55:013
224219951,3cyclictest3756-21/usr/sbin/munin20:50:143
224219951,3cyclictest2940-21/usr/sbin/munin19:35:163
224219951,3cyclictest26746-21find20:30:123
224219951,2cyclictest9941-21cat23:45:123
224169953,1cyclictest30231-21expr19:25:132
224169952,2cyclictest658-21snmpd21:00:122
224169952,2cyclictest658-21snmpd20:00:322
224169952,2cyclictest3682-21sort20:50:142
224169952,2cyclictest32652-21smartctl22:20:192
224169952,2cyclictest2696-21packagekitd00:25:052
224169952,2cyclictest22446-21expr20:20:132
224169952,2cyclictest18142-21ls20:10:142
224169952,1cyclictest0-21swapper/222:35:052
224169951,3cyclictest833-21ssh23:20:092
224169951,3cyclictest6986-21ssh22:25:042
224169951,3cyclictest6849-21sort19:45:102
224169951,3cyclictest658-21snmpd20:25:162
224169951,3cyclictest658-21snmpd19:50:122
224169951,3cyclictest32766-21uptime20:40:192
224169951,3cyclictest32766-21uptime20:40:192
224169951,3cyclictest0-21swapper/222:05:042
224169950,1cyclictest18065-21/usr/sbin/munin23:50:142
224119953,1cyclictest24637-21grep20:25:121
224119952,2cyclictest658-21snmpd23:40:081
224119952,2cyclictest658-21snmpd21:08:271
224119952,2cyclictest658-21snmpd20:36:051
224119952,2cyclictest658-21snmpd19:40:071
224119952,2cyclictest29443-21chrt19:22:041
224119952,2cyclictest275-21systemd-journal21:25:001
224119952,2cyclictest26173-21uname19:15:161
224119952,2cyclictest20200-21tr20:15:121
224119952,2cyclictest18530-21cat20:10:151
224119952,1cyclictest0-21swapper/123:20:271
224119951,3cyclictest658-21snmpd23:45:051
224119951,3cyclictest658-21snmpd20:55:051
224119951,3cyclictest504-21dbus-daemon21:00:011
224119951,3cyclictest410-21cat22:20:201
224119951,3cyclictest30078-21expr19:25:131
224119950,4cyclictest32608-21timerwakeupswit20:40:201
224119950,4cyclictest32608-21timerwakeupswit20:40:201
224119950,4cyclictest22294-21/usr/sbin/munin20:20:151
224069953,1cyclictest7683-21taskset21:00:080
224069953,1cyclictest23214-21gltestperf19:10:140
224069953,1cyclictest15856-21expr20:05:180
224069952,2cyclictest356-21expr19:30:150
224069952,2cyclictest3557-21expr20:50:120
224069952,2cyclictest25082-21gltestperf20:25:140
224069952,2cyclictest24356-21cat22:55:120
224069952,2cyclictest17883-21sh23:50:020
224069952,2cyclictest1219-21expr20:45:100
224069952,1cyclictest0-21swapper/022:25:030
224069951,3cyclictest658-21snmpd23:45:020
224069950,3cyclictest24125-21ntp_states22:15:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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