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2026-05-15 - 03:20
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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 Fri May 15, 2026 00:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
223382308254,16sleep20-21swapper/219:08:162
223722275244,20sleep10-21swapper/119:08:431
223002265233,21sleep00-21swapper/019:07:460
223492262227,22sleep30-21swapper/319:08:253
50582890,0sleep00-21swapper/023:02:220
322152620,0sleep00-21swapper/022:59:420
31832620,0sleep10-21swapper/123:20:331
18092580,0sleep30-21swapper/320:45:143
251582560,0sleep30-21swapper/323:15:023
182322560,0sleep20-21swapper/223:50:132
139852560,0sleep1211rcuc/121:49:521
247302530,0sleep10-21swapper/123:34:381
209782190,0sleep20-21swapper/221:34:342
121282180,0sleep30-21swapper/321:29:073
52892170,0sleep00-21swapper/022:23:220
238292170,0sleep30-21swapper/322:54:363
254662160,0sleep122-21ksoftirqd/123:35:021
37932140,0sleep00-21swapper/022:02:400
179222130,0sleep00-21swapper/021:12:540
155292120,0sleep20-21swapper/222:10:112
233152110,0sleep00-21swapper/019:10:140
142092110,0sleep20-21swapper/221:10:202
9555290,0sleep00-21swapper/023:05:140
30268290,0sleep00-21swapper/021:40:010
225939998,1cyclictest34-21ksoftirqd/321:20:003
225939994,2cyclictest504-21dbus-daemon22:12:153
20677290,0sleep10-21swapper/100:10:421
14657290,0sleep10-21swapper/121:50:121
14657290,0sleep10-21swapper/121:50:121
225939987,1cyclictest34-21ksoftirqd/323:45:013
225899985,2cyclictest12062-21cron21:10:012
225899980,5cyclictest6848-21idleruntime-cro22:05:012
9001270,0sleep00-21swapper/000:24:060
8973270,0sleep10-21swapper/121:26:401
27458270,0sleep30-21swapper/300:35:153
225939976,1cyclictest34-21ksoftirqd/322:45:003
225939974,2cyclictest504-21dbus-daemon23:20:423
225939974,2cyclictest275-21systemd-journal19:47:023
225939974,2cyclictest14499-21grep21:10:213
225939973,3cyclictest30356-21gdbus21:40:013
225939973,3cyclictest275-21systemd-journal23:02:243
225939972,1cyclictest146582rm21:50:123
225939972,1cyclictest146582rm21:50:123
225939971,5cyclictest0-21swapper/300:00:093
225899976,1cyclictest31850-21ssh23:58:312
225899974,2cyclictest28-21ksoftirqd/200:40:002
225899973,3cyclictest658-21snmpd21:48:402
225859974,2cyclictest504-21dbus-daemon19:33:061
225859973,3cyclictest658-21snmpd21:17:361
225859973,3cyclictest275-21systemd-journal22:00:591
225859973,3cyclictest275-21systemd-journal20:50:001
225859972,4cyclictest0-21swapper/121:55:191
225859971,3cyclictest26585-21grep00:35:001
225859970,3cyclictest275-21systemd-journal23:42:471
225859970,1cyclictest31402-21users21:20:201
225819974,2cyclictest19690-21perf20:15:010
225819973,3cyclictest9665-21apt-get23:45:120
225819973,3cyclictest9665-21apt-get23:45:120
225819973,3cyclictest658-21snmpd00:11:500
225819973,3cyclictest275-21systemd-journal23:54:330
225819972,3cyclictest3175-21turbostat20:50:000
225819972,2cyclictest13018-21awk20:00:010
225819971,5cyclictest29716-11brltty19:26:500
225819971,5cyclictest0-21swapper/022:35:130
225819971,3cyclictest1010-21munin-run23:40:010
225819970,6cyclictest1744-21grep23:20:140
21719270,0chrt0-21swapper/200:31:132
11003270,0sleep00-21swapper/000:05:160
5578260,0sleep10-21swapper/100:01:531
30604260,0sleep20-21swapper/221:40:122
225939964,1cyclictest4975-21users20:50:203
225939963,2cyclictest795-21ssh22:00:213
225939963,2cyclictest658-21snmpd19:42:303
225939963,2cyclictest5520-21sh00:21:223
225939963,2cyclictest504-21dbus-daemon22:38:063
225939963,2cyclictest504-21dbus-daemon21:08:523
225939963,2cyclictest504-21dbus-daemon00:05:233
225939963,2cyclictest29434-21head20:35:153
225939963,2cyclictest19879-21ntpq00:30:173
225939963,2cyclictest19705-21sshd23:30:443
225939963,2cyclictest18683-21ntpq20:10:163
225939963,2cyclictest18254-21df_inode23:50:133
225939963,2cyclictest15586-21ssh23:09:093
225939963,1cyclictest0-21swapper/321:55:363
225939962,3cyclictest9808-11brltty22:55:363
225939962,3cyclictest8085-21cat21:00:133
225939962,3cyclictest658-21snmpd23:35:103
225939962,3cyclictest658-21snmpd22:46:003
225939962,3cyclictest658-21snmpd22:32:023
225939962,3cyclictest658-21snmpd22:25:323
225939962,3cyclictest658-21snmpd22:19:413
225939962,3cyclictest658-21snmpd22:08:533
225939962,3cyclictest658-21snmpd21:49:043
225939962,3cyclictest658-21snmpd21:35:153
225939962,3cyclictest658-21snmpd20:58:353
225939962,3cyclictest658-21snmpd20:21:433
225939962,3cyclictest658-21snmpd20:00:463
225939962,3cyclictest658-21snmpd19:37:483
225939962,3cyclictest658-21snmpd19:25:333
225939962,3cyclictest658-21snmpd19:23:003
225939962,3cyclictest658-21snmpd00:25:383
225939962,3cyclictest15777-21expr20:05:153
225939962,3cyclictest1-21systemd23:45:183
225939962,3cyclictest1-21systemd23:45:183
225939962,3cyclictest11713-21cat19:55:153
225939962,3cyclictest10128-21cat23:25:163
225939962,1cyclictest0-21swapper/323:55:073
225939962,1cyclictest0-21swapper/300:12:563
225939961,3cyclictest275-21systemd-journal19:18:503
225939960,6cyclictest0-21swapper/322:21:463
225939960,6cyclictest0-21swapper/320:15:133
225939960,0cyclictest0-21swapper/321:30:023
225899966,0cyclictest0-21swapper/223:19:482
225899966,0cyclictest0-21swapper/221:54:242
225899966,0cyclictest0-21swapper/221:54:242
225899966,0cyclictest0-21swapper/221:27:052
225899966,0cyclictest0-21swapper/221:00:442
225899963,2cyclictest9635-21sh22:25:222
225899963,2cyclictest946-21latency_hist20:45:002
225899963,2cyclictest658-21snmpd22:07:472
225899963,2cyclictest658-21snmpd19:35:302
225899963,2cyclictest658-21snmpd19:11:272
225899963,2cyclictest275-21systemd-journal22:17:082
225899963,2cyclictest25661-21irqstats22:55:152
225899963,2cyclictest16749-21cat20:05:212
225899963,2cyclictest15629-21ssh22:49:372
225899963,2cyclictest10442-21cat00:05:142
225899962,3cyclictest663-21runrttasks23:12:482
225899962,3cyclictest658-21snmpd23:32:162
225899962,3cyclictest658-21snmpd23:21:012
225899962,3cyclictest658-21snmpd22:38:332
225899962,3cyclictest658-21snmpd20:17:492
225899962,3cyclictest658-21snmpd20:00:132
225899962,3cyclictest658-21snmpd19:32:032
225899962,3cyclictest658-21snmpd19:21:572
225899962,3cyclictest658-21snmpd19:18:422
225899962,3cyclictest658-21snmpd00:25:502
225899962,3cyclictest504-21dbus-daemon20:40:002
225899962,3cyclictest275-21systemd-journal20:27:012
225899962,3cyclictest1625-21cups-browsed00:00:012
225899962,2cyclictest275-21systemd-journal21:35:582
225899962,1cyclictest0-21swapper/222:31:432
225899961,4cyclictest802-21hddtemp_smartct22:40:152
225899960,6cyclictest0-21swapper/223:48:042
225899960,6cyclictest0-21swapper/223:48:042
225899960,6cyclictest0-21swapper/220:30:182
225899960,5cyclictest27207-21perl00:15:152
225899960,3cyclictest31835-21sshd19:27:122
225899960,0cyclictest0-21swapper/200:10:122
225859963,2cyclictest9039-21awk22:05:211
225859963,2cyclictest658-21snmpd21:37:241
225859963,2cyclictest501-21in:imuxsock20:40:461
225859963,2cyclictest29764-21ssh23:56:541
225859963,2cyclictest275-21systemd-journal19:27:401
225859963,2cyclictest27049-21cat19:15:191
225859963,2cyclictest2074-21rm22:40:291
225859963,2cyclictest20601-21ssh22:32:301
225859963,2cyclictest15875-21df20:05:151
225859963,2cyclictest13396-21ssh23:07:281
225859963,2cyclictest12542-21ssh00:25:281
225859962,3cyclictest9473-21cat19:50:151
225859962,3cyclictest9473-21cat19:50:151
225859962,3cyclictest658-21snmpd23:50:251
225859962,3cyclictest658-21snmpd23:16:371
225859962,3cyclictest658-21snmpd23:03:241
225859962,3cyclictest658-21snmpd22:46:421
225859962,3cyclictest658-21snmpd22:20:321
225859962,3cyclictest658-21snmpd22:10:501
225859962,3cyclictest658-21snmpd21:42:481
225859962,3cyclictest658-21snmpd00:37:091
225859962,3cyclictest658-21snmpd00:16:561
225859962,3cyclictest3151-21cut19:35:171
225859962,3cyclictest27556-21ntpq20:30:161
225859962,3cyclictest275-21systemd-journal00:10:021
225859962,3cyclictest25699-21sensors_temp22:35:211
225859962,3cyclictest24616-21expr22:15:151
225859962,3cyclictest23464-21cat19:10:151
225859962,3cyclictest22860-21cat20:20:131
225859962,1cyclictest20634-21munin-run21:15:001
225859960,5cyclictest10189-21latency_hist00:25:001
225859960,4cyclictest21576-21idleruntime-cro21:35:001
225859960,2cyclictest28833-21/usr/sbin/munin20:35:151
225819966,0cyclictest0-21swapper/020:00:010
225819963,2cyclictest658-21snmpd20:05:430
225819963,2cyclictest3976-21ssh22:41:590
225819963,2cyclictest32560-21ssh00:18:350
225819963,2cyclictest275-21systemd-journal21:04:410
225819963,2cyclictest275-21systemd-journal00:37:130
225819963,2cyclictest26754-21expr20:30:120
225819963,2cyclictest26557-21ssh22:16:070
225819963,2cyclictest16492-21sh22:50:060
225819963,2cyclictest11519-21memory00:25:160
225819963,1cyclictest0-21swapper/022:07:140
225819963,1cyclictest0-21swapper/021:47:150
225819962,3cyclictest658-21snmpd23:43:310
225819962,3cyclictest658-21snmpd22:33:260
225819962,3cyclictest658-21snmpd22:27:290
225819962,3cyclictest658-21snmpd21:50:370
225819962,3cyclictest658-21snmpd21:50:370
225819962,3cyclictest658-21snmpd21:36:210
225819962,3cyclictest658-21snmpd21:31:330
225819962,3cyclictest658-21snmpd21:20:180
225819962,3cyclictest658-21snmpd20:27:180
225819962,3cyclictest658-21snmpd19:49:520
225819962,3cyclictest658-21snmpd19:34:450
225819962,3cyclictest658-21snmpd19:15:330
225819962,3cyclictest658-21snmpd00:00:200
225819962,3cyclictest504-21dbus-daemon21:25:070
225819962,3cyclictest275-21systemd-journal19:52:050
225819962,3cyclictest275-21systemd-journal19:52:050
225819962,3cyclictest25665-21cat23:15:130
225819962,3cyclictest23626-21cat21:55:150
225819962,3cyclictest15860-21expr22:10:130
225819961,2cyclictest21158-21ssh21:15:140
225819960,2cyclictest17207-21/usr/sbin/munin23:10:150
225819960,0cyclictest0-21swapper/023:59:240
3075250,1sleep20-21swapper/223:40:202
225939953,1cyclictest0-21swapper/321:20:123
225939952,2cyclictest727-21missed_timers19:30:153
225939952,2cyclictest658-21snmpd19:51:013
225939952,2cyclictest658-21snmpd19:51:013
225939952,2cyclictest491-21systemd-logind20:40:213
225939952,2cyclictest25809-21cat20:25:183
225939952,2cyclictest22989-21seq19:10:123
225939951,3cyclictest26493-21ssh00:15:043
225939950,4cyclictest17170-21ssh23:10:123
225939950,2cyclictest275-21systemd-journal20:31:583
225899953,1cyclictest12077-21diskmemload21:15:022
225899952,2cyclictest9165-21expr19:50:132
225899952,2cyclictest9165-21expr19:50:132
225899952,2cyclictest9150-21ssh23:25:022
225899952,2cyclictest8788-21ssh23:05:062
225899952,2cyclictest6841-21expr19:45:132
225899952,2cyclictest658-21snmpd22:20:202
225899952,2cyclictest479-21ssh23:00:042
225899952,2cyclictest29484-21ssh21:20:032
225899952,2cyclictest2735-21expr00:20:122
225899952,2cyclictest25554-21ssh23:35:072
225899952,2cyclictest23719-21latency21:55:162
225899952,2cyclictest23512-21grep20:20:182
225899952,2cyclictest18284-21tail20:10:132
225899952,2cyclictest12239-21sensors19:55:192
225899951,3cyclictest6811-21/usr/sbin/munin20:55:182
225899951,3cyclictest658-21snmpd19:40:092
225899951,3cyclictest4024-21hddtemp_smartct20:50:132
225899951,3cyclictest17353-21ssh22:50:152
225899951,3cyclictest1617-21fschecks_count20:45:132
225859953,1cyclictest3881-21sort20:50:131
225859953,1cyclictest28483-21hddtemp_smartct19:20:131
225859952,2cyclictest9457-21chrt21:00:301
225859952,2cyclictest7558-21sh19:45:171
225859952,2cyclictest5523-21systemctl19:40:181
225859952,2cyclictest24400-21basename20:25:101
225859952,2cyclictest20224-21ls20:15:121
225859952,2cyclictest17545-21expr23:10:151
225859952,2cyclictest17355-21cat22:50:151
225859952,2cyclictest13629-21expr20:00:121
225859952,2cyclictest10332-21hostname23:45:141
225859952,2cyclictest10332-21hostname23:45:141
225859952,1cyclictest0-21swapper/123:25:101
225859951,3cyclictest658-21snmpd19:55:131
225859951,3cyclictest5631-21/usr/sbin/munin20:55:111
225859951,3cyclictest25078-21grep22:55:131
225859951,3cyclictest18168-21tune2fs20:10:131
225859951,3cyclictest11302-21grep21:05:181
225859950,4cyclictest7848-21ssh22:25:101
225819953,1cyclictest501-21in:imuxsock22:45:110
225819953,1cyclictest2140-21apt19:35:110
225819952,2cyclictest9213-21ssh23:25:040
225819952,2cyclictest6815-21mailstats20:55:180
225819952,2cyclictest658-21snmpd21:05:020
225819952,2cyclictest658-21snmpd20:15:040
225819952,2cyclictest3612-21cut20:50:120
225819952,2cyclictest29512-21cat20:35:160
225819952,2cyclictest28022-21tr19:20:130
225819952,2cyclictest17631-21ls23:30:130
225819951,3cyclictest275-21systemd-journal20:22:080
225819951,3cyclictest18760-21ssh00:30:080
225819950,4cyclictest31374-21/usr/sbin/munin20:40:120
225819950,4cyclictest0-21swapper/019:40:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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