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2026-08-25 - 09:48
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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 Tue Aug 25, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12882331302,19sleep20-21swapper/219:06:342
12922286256,20sleep10-21swapper/119:06:371
13112270239,20sleep30-21swapper/319:06:473
14002257225,19sleep00-21swapper/019:07:440
55892660,0sleep00-21swapper/021:56:180
225152640,0sleep10-21swapper/122:45:161
4602630,3sleep228-21ksoftirqd/221:34:292
82912610,0sleep00-21swapper/022:36:390
106502610,0sleep00-21swapper/023:35:490
43532550,0sleep00-21swapper/023:53:550
260392550,0sleep20-21swapper/221:49:522
146932200,1chrt14692-21ssh00:39:401
288042190,0sleep30-21swapper/323:48:013
270262190,0sleep20-21swapper/200:27:042
43312170,0sleep10-21swapper/120:25:131
313402160,0sleep10-21swapper/123:29:531
183882160,0sleep00-21swapper/021:45:130
239852140,0sleep30-21swapper/321:48:173
166599143,6cyclictest23881-21diskmemload00:38:350
81822130,0sleep10-21swapper/100:15:261
143582130,1sleep30-21swapper/321:23:053
205242120,0sleep30-21swapper/322:44:383
167899126,1cyclictest141rcu_preempt00:05:143
166599122,6cyclictest15190-21sh22:40:320
166599122,6cyclictest10946-21ssh00:17:320
166599120,3cyclictest4935-21sh00:33:360
166599120,3cyclictest2922-21chrt22:53:120
166599120,2cyclictest23359-21rm22:26:070
166599120,1cyclictest17369-21awk19:40:200
166599112,5cyclictest12562-21taskset20:42:410
166599110,2cyclictest893-21cat21:15:150
166599110,2cyclictest25699-21ssh00:26:030
166599110,2cyclictest2103-21sh00:10:590
166599110,2cyclictest13994-21sh22:20:350
166599110,2cyclictest11445-21grep22:00:160
166599110,1cyclictest281972sleep023:47:340
166599110,1cyclictest17770-21fschecks_count21:25:110
166599110,1cyclictest0-21swapper/022:30:150
166599110,1cyclictest0-21swapper/022:13:040
116682110,0sleep00-21swapper/023:58:030
253032100,0sleep30-21swapper/323:06:093
167899109,1cyclictest34-21ksoftirqd/319:15:013
167899108,2cyclictest34-21ksoftirqd/319:25:013
167899108,1cyclictest34-21ksoftirqd/300:00:003
166599103,6cyclictest11262-21sh21:20:440
166599102,7cyclictest501-21in:imuxsock20:25:000
166599102,7cyclictest491-21systemd-logind00:05:000
166599102,6cyclictest275-21systemd-journal20:03:530
166599102,5cyclictest1762-21sh23:11:300
166599101,2cyclictest275-21systemd-journal20:00:000
166599101,1cyclictest26699-21apt-get21:50:110
166599100,9cyclictest4001-21munin-node19:15:020
166599100,6cyclictest26951-21ssh21:10:450
166599100,2cyclictest6277-21rm21:37:310
166599100,2cyclictest23881-21diskmemload22:55:150
166599100,1cyclictest703-21ps20:15:190
166599100,1cyclictest6908-21ssh23:15:130
166599100,1cyclictest26934-21sh22:09:520
166599100,1cyclictest25758-21ssh21:30:130
166599100,1cyclictest0-21swapper/022:15:160
16789997,2cyclictest34-21ksoftirqd/300:20:003
16789997,1cyclictest34-21ksoftirqd/322:05:013
16669992,4cyclictest27070-21perf20:05:001
16659992,6cyclictest30727-21snmpd20:09:550
16659992,6cyclictest30727-21snmpd19:46:570
16659992,6cyclictest23457-21rm23:25:060
16659991,7cyclictest9960-21cut19:25:190
16659991,3cyclictest14987-21expr00:20:080
16659990,3cyclictest4874-21cat20:25:160
16659990,3cyclictest275-21systemd-journal19:21:480
16659990,2cyclictest7991-21chrt20:31:320
16659990,2cyclictest483-21avahi-daemon22:50:010
16659990,2cyclictest1873-21chrt19:10:050
16659990,2cyclictest13933-21chrt19:35:120
16659990,1cyclictest8561-21apt-get20:35:120
16659990,1cyclictest275-21systemd-journal21:45:010
16659990,1cyclictest27058-21ssh23:07:280
16659990,1cyclictest22012-21perf23:05:010
16659990,1cyclictest21651-21apt21:05:000
16659990,1cyclictest17455-21apt-get20:55:110
16659990,1cyclictest1698-21ssh23:30:230
16659990,1cyclictest16708-21apt-get23:40:130
16659990,1cyclictest11736-21apt-get19:30:100
16659990,1cyclictest0-21swapper/023:21:070
7868280,0sleep17871-21gltestperf19:20:151
27130280,0sleep30-21swapper/321:50:133
16789986,1cyclictest34-21ksoftirqd/320:00:003
16659980,2cyclictest21910-21apt21:05:110
16659980,2cyclictest21010-21df19:50:130
16659980,2cyclictest15786-21gltestperf20:50:150
16659980,2cyclictest13143-21tr20:45:130
16659980,1cyclictest29274-21apt-get20:10:010
16659980,1cyclictest14507-40systemctl00:00:000
31893270,0sleep10-21swapper/123:30:011
18635270,0sleep10-21swapper/123:21:361
16789976,1cyclictest34-21ksoftirqd/323:20:013
16789976,1cyclictest34-21ksoftirqd/323:15:013
16789975,2cyclictest34-21ksoftirqd/319:15:013
16789975,1cyclictest34-21ksoftirqd/300:25:003
16789974,3cyclictest34-21ksoftirqd/319:40:133
16789974,2cyclictest491-21systemd-logind21:43:113
16789973,3cyclictest9217-21cat20:35:153
16789973,3cyclictest504-21dbus-daemon20:35:003
16789970,1cyclictest0-21swapper/321:36:503
16749976,1cyclictest29351-21ssh22:30:132
16749972,2cyclictest23756-1kworker/u9:221:20:122
16749971,3cyclictest275-21systemd-journal22:42:342
16749971,3cyclictest11453-21systemctl22:20:012
16669973,3cyclictest275-21systemd-journal23:04:051
16669972,3cyclictest11486-21dump-pmu-power19:30:011
16669970,3cyclictest239212sh00:25:171
16669970,1cyclictest0-21swapper/122:42:421
16178270,0sleep30-21swapper/322:22:163
30503260,0sleep20-21swapper/221:51:552
16789966,0cyclictest341ksoftirqd/323:30:013
16789966,0cyclictest0-21swapper/321:57:413
16789966,0cyclictest0-21swapper/300:28:243
16789965,1cyclictest34-21ksoftirqd/322:20:013
16789963,2cyclictest9578-21ntpq23:35:283
16789963,2cyclictest31788-21cron20:14:593
16789963,2cyclictest275-21systemd-journal20:49:553
16789963,2cyclictest26996-21ssh21:10:473
16789963,2cyclictest23128-21ssh22:25:583
16789963,2cyclictest11067-21users19:25:253
16789962,3cyclictest7538-21ls00:35:113
16789962,3cyclictest3176-21expr20:20:203
16789962,3cyclictest30727-21snmpd23:01:413
16789962,3cyclictest30727-21snmpd22:55:233
16789962,3cyclictest30727-21snmpd21:31:513
16789962,3cyclictest30727-21snmpd21:02:353
16789962,3cyclictest30727-21snmpd20:50:413
16789962,3cyclictest30727-21snmpd20:25:433
16789962,3cyclictest30727-21snmpd20:05:253
16789962,3cyclictest30727-21snmpd19:50:003
16789962,3cyclictest30727-21snmpd19:31:213
16789962,3cyclictest30727-21snmpd00:11:073
16789962,3cyclictest28336-21cat22:10:143
16789962,3cyclictest2048-21sensors_temp21:15:203
16789962,3cyclictest1294-21chrt23:30:193
16789962,2cyclictest275-21systemd-journal20:15:333
16789962,1cyclictest141rcu_preempt23:40:153
16789962,1cyclictest0-21swapper/322:35:193
16789961,3cyclictest275-21systemd-journal22:05:433
16789960,6cyclictest0-21swapper/323:23:273
16789960,6cyclictest0-21swapper/322:47:143
16789960,6cyclictest0-21swapper/319:39:433
16789960,5cyclictest25481-21diskstats20:00:143
16789960,0cyclictest0-21swapper/300:30:053
16749963,2cyclictest7882-21uptime20:30:222
16749963,2cyclictest504-21dbus-daemon21:15:062
16749963,2cyclictest3965-21sh21:35:452
16749963,2cyclictest3425-21ssh23:31:422
16749963,2cyclictest3345-21rm00:11:562
16749963,2cyclictest30727-21snmpd23:10:322
16749963,2cyclictest30727-21snmpd20:05:042
16749963,2cyclictest275-21systemd-journal20:51:252
16749963,2cyclictest25445-21ssh23:45:282
16749963,2cyclictest23560-21ntpq23:05:182
16749963,2cyclictest23326-21ssh22:45:242
16749963,2cyclictest22344-21sshd19:52:082
16749963,2cyclictest0-21swapper/200:18:112
16749962,3cyclictest504-21dbus-daemon22:25:012
16749962,3cyclictest4144-21ntp_states19:15:012
16749962,3cyclictest30727-21snmpd23:15:112
16749962,3cyclictest30727-21snmpd23:00:262
16749962,3cyclictest30727-21snmpd22:50:292
16749962,3cyclictest30727-21snmpd22:37:322
16749962,3cyclictest30727-21snmpd21:14:442
16749962,3cyclictest30727-21snmpd21:05:052
16749962,3cyclictest30727-21snmpd20:45:052
16749962,3cyclictest30727-21snmpd20:00:462
16749962,3cyclictest30727-21snmpd19:38:512
16749962,3cyclictest30727-21snmpd19:29:212
16749962,3cyclictest30727-21snmpd19:14:482
16749962,3cyclictest275-21systemd-journal20:21:232
16749962,3cyclictest19583-21which19:45:202
16749962,3cyclictest1801-21cut20:20:002
16749962,3cyclictest0-21swapper/222:26:052
16749962,2cyclictest23756-1kworker/u9:223:40:122
16749962,2cyclictest23756-1kworker/u9:222:08:232
16749962,2cyclictest15117-21rm21:42:532
16749962,1cyclictest0-21swapper/223:35:322
16749962,1cyclictest0-21swapper/221:59:362
16749962,1cyclictest0-21swapper/221:25:132
16749961,3cyclictest27924-21rm23:27:172
16749961,3cyclictest275-21systemd-journal22:02:242
16749961,3cyclictest275-21systemd-journal20:41:242
16749960,6cyclictest0-21swapper/200:20:382
16749960,0cyclictest0-21swapper/223:57:042
16669963,2cyclictest504-21dbus-daemon21:10:011
16669963,2cyclictest5030-21/usr/sbin/munin19:15:141
16669963,2cyclictest4286-21ssh23:13:241
16669963,2cyclictest3743-21sh00:12:141
16669963,2cyclictest32492-21sort20:15:151
16669963,2cyclictest30727-21snmpd23:51:571
16669963,2cyclictest30727-21snmpd21:43:031
16669963,2cyclictest24589-21sh22:27:041
16669963,2cyclictest23649-11brltty00:22:021
16669963,2cyclictest21277-21ssh22:05:331
16669963,2cyclictest14595-21sh00:00:041
16669963,2cyclictest12905-21ssh23:18:381
16669962,3cyclictest9358-21grep23:35:271
16669962,3cyclictest504-21dbus-daemon22:20:011
16669962,3cyclictest4461-21cat22:35:001
16669962,3cyclictest30727-21snmpd22:53:561
16669962,3cyclictest30727-21snmpd20:20:161
16669962,3cyclictest30727-21snmpd19:51:211
16669962,3cyclictest275-21systemd-journal21:51:321
16669962,3cyclictest22043-21expr21:05:121
16669962,3cyclictest19085-21cat19:45:151
16669962,3cyclictest17577-21cat23:40:171
16669962,3cyclictest0-21swapper/123:55:081
16669962,2cyclictest275-21systemd-journal19:40:271
16669961,4cyclictest23529-21apt-get00:05:141
16669960,6cyclictest0-21swapper/123:45:431
16669960,6cyclictest0-21swapper/122:57:081
16669960,6cyclictest0-21swapper/122:21:101
16669960,6cyclictest0-21swapper/121:46:031
16669960,5cyclictest5039-21cpuspeed_turbos22:35:121
16669960,4cyclictest18802-21dump-pmu-power22:05:011
16669960,3cyclictest275-21systemd-journal21:27:201
16669960,2cyclictest3556-21sed21:55:171
16669960,2cyclictest10516-21sendmail20:40:001
13977260,0sleep10-21swapper/121:22:471
16789953,1cyclictest31947-21ssh23:50:153
16789953,1cyclictest14852-21cpuspeed_turbos00:00:103
16789952,2cyclictest504-21dbus-daemon22:30:063
16789952,2cyclictest30727-21snmpd19:50:123
16789952,2cyclictest30550-21interrupts22:50:143
16789952,2cyclictest17753-21expr20:55:123
16789952,2cyclictest17442-21sort21:25:103
16789952,2cyclictest11347-21gltestperf20:40:143
16789952,2cyclictest0-21swapper/321:05:123
16749953,1cyclictest16955-21wc19:40:172
16749952,2cyclictest5142-21awk20:25:192
16749952,2cyclictest31201-21ssh00:30:062
16749952,2cyclictest30727-21snmpd23:50:422
16749952,2cyclictest30727-21snmpd20:38:132
16749952,2cyclictest30727-21snmpd19:55:052
16749952,2cyclictest30727-21snmpd00:05:032
16749952,2cyclictest28459-21cat22:10:152
16749952,2cyclictest20366-21cat21:00:152
16749952,2cyclictest17422-21sshd20:55:072
16749952,2cyclictest1-21systemd00:00:002
16749952,2cyclictest11975-21expr19:30:122
16749952,1cyclictest0-21swapper/223:20:022
16749952,1cyclictest0-21swapper/222:55:042
16749951,3cyclictest7894-21hddtemp_smartct19:20:152
16749951,3cyclictest29827-21cat20:10:122
16749950,3cyclictest7195-21rm00:35:092
16669955,0cyclictest0-21swapper/122:10:281
16669952,2cyclictest32120-21ssh00:30:161
16669952,2cyclictest30727-21snmpd21:00:141
16669952,2cyclictest27662-21expr20:05:141
16669952,2cyclictest25551-21sh21:30:051
16669952,2cyclictest2218-21expr19:10:131
16669952,2cyclictest2146-21uniq21:35:131
16669952,2cyclictest18142-21uname20:55:151
16669952,2cyclictest15536-21expr20:50:131
16669952,2cyclictest14338-21df_inode19:35:141
16669952,2cyclictest1420-21cat21:15:171
16669952,2cyclictest11704-21seq19:30:071
16669951,3cyclictest29787-21gdbus20:10:011
16669951,3cyclictest23248-21cat23:05:161
16669951,3cyclictest13445-21fschecks_count20:45:141
16669951,3cyclictest11114-21expr20:40:131
16669950,4cyclictest6314-21/usr/sbin/munin20:30:211
16669940,3cyclictest22828-21/usr/sbin/munin19:55:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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