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2026-03-13 - 20:12
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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 Fri Mar 13, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313882318288,19sleep20-21swapper/207:09:252
311482271240,20sleep10-21swapper/107:06:351
311412269235,20sleep00-21swapper/007:06:290
312132261228,22sleep30-21swapper/307:07:243
84632650,0sleep00-21swapper/010:38:590
238102640,0sleep00-21swapper/008:00:190
77632590,0sleep00-21swapper/011:16:430
77632590,0sleep00-21swapper/011:16:430
34582560,0sleep10-21swapper/108:30:101
251192560,0sleep00-21swapper/011:07:590
250192560,0sleep00-21swapper/009:11:210
115692550,0sleep10-21swapper/108:45:191
151222540,0sleep20-21swapper/210:23:282
105172540,0sleep10-21swapper/111:38:061
311732190,0sleep20-21swapper/209:15:152
8242180,0sleep00-21swapper/011:51:230
63032180,0sleep20-21swapper/209:58:532
311362180,0sleep10-21swapper/111:50:161
271752180,0sleep10-21swapper/109:51:271
176462150,0sleep00-21swapper/010:05:160
311372140,0sleep20-21swapper/209:54:282
31538991210,1cyclictest22-21ksoftirqd/108:30:001
258432120,0sleep10-21swapper/111:08:321
3153899119,1cyclictest22-21ksoftirqd/109:25:011
3153899109,1cyclictest22-21ksoftirqd/109:20:011
3153899108,1cyclictest22-21ksoftirqd/111:20:011
3153899108,1cyclictest22-21ksoftirqd/111:20:001
3153899108,1cyclictest22-21ksoftirqd/107:40:021
3153899107,2cyclictest22-21ksoftirqd/112:30:001
3153899107,2cyclictest22-21ksoftirqd/110:50:001
3153899103,1cyclictest141rcu_preempt08:00:101
315479996,2cyclictest13329-21ssh11:00:213
315479990,2cyclictest21898-21sshd12:04:493
315439996,2cyclictest658-21snmpd10:30:142
315389998,1cyclictest22-21ksoftirqd/112:40:011
315389998,1cyclictest22-21ksoftirqd/111:44:591
315389997,1cyclictest22-21ksoftirqd/111:30:001
18754290,0sleep30-21swapper/309:27:103
11042290,0sleep10-21swapper/112:17:021
6160280,0sleep20-21swapper/209:39:312
315439986,1cyclictest28-21ksoftirqd/211:40:012
315389987,1cyclictest22-21ksoftirqd/112:25:001
315389987,1cyclictest22-21ksoftirqd/109:00:001
315389987,1cyclictest22-21ksoftirqd/107:15:011
315389987,1cyclictest22-21ksoftirqd/107:15:011
315389986,2cyclictest22-21ksoftirqd/111:20:101
315389986,1cyclictest22-21ksoftirqd/107:15:011
315479973,3cyclictest658-21snmpd11:41:063
315479973,3cyclictest275-21systemd-journal12:20:493
315479973,3cyclictest275-21systemd-journal10:20:103
315479973,3cyclictest275-21systemd-journal09:40:293
315479971,4cyclictest275-21systemd-journal10:55:113
315479970,7cyclictest29452-21ssh12:09:033
315479970,7cyclictest0-21swapper/309:32:103
315439974,2cyclictest23407-21diskstats09:30:132
315439973,3cyclictest9401-21grep07:30:132
315439973,3cyclictest4883-21cron10:17:012
315439972,3cyclictest14489-21perf08:55:002
315389977,0cyclictest221ksoftirqd/110:30:001
315389976,1cyclictest22-21ksoftirqd/110:45:001
315389976,1cyclictest22-21ksoftirqd/110:40:001
315389976,1cyclictest22-21ksoftirqd/110:10:001
315389976,1cyclictest22-21ksoftirqd/109:30:001
315389976,1cyclictest22-21ksoftirqd/108:15:011
315389976,1cyclictest22-21ksoftirqd/108:10:011
315389976,1cyclictest22-21ksoftirqd/108:00:001
315389976,1cyclictest22-21ksoftirqd/107:50:001
315389976,1cyclictest211rcuc/110:55:001
315389975,2cyclictest22-21ksoftirqd/112:00:011
315389975,2cyclictest22-21ksoftirqd/111:05:011
315389974,2cyclictest22-21ksoftirqd/112:10:001
315389973,3cyclictest658-21snmpd07:28:411
315389972,2cyclictest23496-21munin-plugin-st09:50:001
315349973,3cyclictest275-21systemd-journal12:24:090
315349973,1cyclictest0-21swapper/010:18:520
315349972,2cyclictest15785-21awk12:40:010
315349971,3cyclictest7795-21munin-run08:40:000
315349970,6cyclictest22969-21ssh11:45:200
315349970,2cyclictest65850snmpd09:06:260
315479966,0cyclictest0-21swapper/311:22:233
315479966,0cyclictest0-21swapper/307:45:233
315479964,1cyclictest17798-21grep10:25:113
315479963,2cyclictest9400-21sh12:15:463
315479963,2cyclictest658-21snmpd10:03:233
315479963,2cyclictest658-21snmpd09:45:163
315479963,2cyclictest504-21dbus-daemon08:42:283
315479963,2cyclictest4751-21head11:15:143
315479963,2cyclictest4751-21head11:15:133
315479963,2cyclictest31550-21cron12:30:003
315479963,2cyclictest31429-21ssh10:33:113
315479963,2cyclictest29132-21ssh11:30:083
315479963,2cyclictest28855-21sh09:14:183
315479963,2cyclictest2813-21ssh10:15:253
315479963,2cyclictest275-21systemd-journal08:58:213
315479963,2cyclictest26862-21sh11:47:513
315479963,2cyclictest24940-21ssh11:27:063
315479963,2cyclictest22406-21sh11:05:533
315479963,2cyclictest18592-21ssh10:05:303
315479963,2cyclictest1067-21ssh11:51:333
315479962,3cyclictest8505-21expr12:35:133
315479962,3cyclictest7356-21ntpq09:20:163
315479962,3cyclictest658-21snmpd11:35:363
315479962,3cyclictest658-21snmpd11:11:573
315479962,3cyclictest658-21snmpd10:45:213
315479962,3cyclictest658-21snmpd10:40:453
315479962,3cyclictest658-21snmpd10:35:383
315479962,3cyclictest658-21snmpd09:54:073
315479962,3cyclictest658-21snmpd08:22:333
315479962,3cyclictest658-21snmpd08:11:363
315479962,3cyclictest658-21snmpd08:07:323
315479962,3cyclictest658-21snmpd07:55:123
315479962,3cyclictest658-21snmpd07:30:073
315479962,3cyclictest658-21snmpd07:25:343
315479962,3cyclictest30207-21grep08:15:183
315479962,3cyclictest18097-21cat07:50:123
315479962,3cyclictest1431-21grep09:55:203
315479962,2cyclictest275-21systemd-journal11:55:483
315479962,1cyclictest0-21swapper/309:17:123
315479961,3cyclictest275-21systemd-journal08:39:163
315479961,1cyclictest13464-21apt-get07:40:113
315479960,6cyclictest0-21swapper/312:30:193
315479960,6cyclictest0-21swapper/312:13:443
315479960,6cyclictest0-21swapper/310:12:213
315479960,2cyclictest27558-21grep10:50:123
315439963,2cyclictest658-21snmpd12:18:282
315439963,2cyclictest658-21snmpd11:05:112
315439963,2cyclictest5250-21ntp_states11:15:162
315439963,2cyclictest5250-21ntp_states11:15:162
315439963,2cyclictest504-21dbus-daemon08:47:522
315439963,2cyclictest3583-21df_inode10:55:132
315439963,2cyclictest275-21systemd-journal11:20:022
315439963,2cyclictest26964-21sh11:47:562
315439963,2cyclictest23854-1kworker/u9:211:55:182
315439963,2cyclictest2344-21df10:35:122
315439963,2cyclictest21353-21ssh10:07:352
315439963,2cyclictest20457-21ntpq09:05:152
315439963,2cyclictest17736-21ssh11:42:132
315439963,2cyclictest17149-21grep07:45:202
315439963,2cyclictest14406-21ntpq07:40:172
315439963,2cyclictest12326-21smart_sda07:35:192
315439963,1cyclictest0-21swapper/210:01:062
315439962,3cyclictest658-21snmpd12:21:342
315439962,3cyclictest658-21snmpd12:01:052
315439962,3cyclictest658-21snmpd09:47:302
315439962,3cyclictest658-21snmpd08:02:022
315439962,3cyclictest504-21dbus-daemon12:38:192
315439962,3cyclictest504-21dbus-daemon08:05:202
315439962,3cyclictest3473-21grep08:30:112
315439962,3cyclictest32004-21/usr/sbin/munin12:30:202
315439962,3cyclictest31283-21awk11:50:162
315439962,3cyclictest275-21systemd-journal10:15:002
315439962,3cyclictest17292-21expr09:00:122
315439962,3cyclictest11042-21cat10:40:132
315439962,1cyclictest0-21swapper/210:27:172
315439960,5cyclictest14145-11brltty09:11:422
315389965,1cyclictest22-21ksoftirqd/110:00:001
315389963,2cyclictest9815-21chrt08:42:471
315389963,2cyclictest663-21runrttasks10:01:591
315389963,2cyclictest5252-21cat07:20:141
315389963,2cyclictest3439-21rm12:12:331
315389963,2cyclictest31850-21sh10:14:141
315389963,2cyclictest27034-21awk10:30:161
315389963,2cyclictest14167-21ssh12:00:041
315389963,2cyclictest10583-21ssh10:59:381
315389963,1cyclictest21466-21diskmemload11:33:511
315389963,1cyclictest141rcu_preempt09:10:141
315389962,3cyclictest8466-21grep09:40:161
315389962,3cyclictest658-21snmpd09:37:351
315389962,3cyclictest658-21snmpd09:04:021
315389962,3cyclictest658-21snmpd08:35:451
315389962,3cyclictest32423-21df12:30:121
315389962,3cyclictest29972-21ntpq08:15:171
315389962,3cyclictest275-21systemd-journal09:08:481
315389962,3cyclictest275-21systemd-journal07:31:341
315389962,3cyclictest22299-21cat11:45:161
315389962,3cyclictest1006-21cat10:15:121
315389962,1cyclictest22-21ksoftirqd/110:23:061
315389962,1cyclictest141rcu_preempt09:30:161
315389961,2cyclictest141rcu_preempt11:10:191
315389960,3cyclictest717-21sshd08:24:121
315389960,3cyclictest15413-21cron07:45:001
315349963,2cyclictest973-21ssh09:35:320
315349963,2cyclictest959-21wc08:25:000
315349963,2cyclictest658-21snmpd12:01:520
315349963,2cyclictest504-21dbus-daemon09:50:000
315349963,2cyclictest504-21dbus-daemon09:34:380
315349963,2cyclictest2644-21taskset08:25:240
315349963,2cyclictest25549-21ssh12:25:230
315349963,2cyclictest24586-21head09:50:130
315349963,2cyclictest14757-21expr07:40:190
315349963,2cyclictest11333-21chrt11:00:020
315349962,4cyclictest12-21ksoftirqd/008:14:090
315349962,3cyclictest7410-21sed07:25:170
315349962,3cyclictest658-21snmpd12:33:140
315349962,3cyclictest658-21snmpd12:06:010
315349962,3cyclictest658-21snmpd11:59:550
315349962,3cyclictest658-21snmpd11:37:010
315349962,3cyclictest658-21snmpd10:51:540
315349962,3cyclictest658-21snmpd10:31:250
315349962,3cyclictest658-21snmpd10:00:280
315349962,3cyclictest658-21snmpd09:24:020
315349962,3cyclictest658-21snmpd08:56:290
315349962,3cyclictest658-21snmpd08:07:480
315349962,3cyclictest658-21snmpd07:46:020
315349962,3cyclictest658-21snmpd07:31:100
315349962,3cyclictest5679-21cat07:20:170
315349962,3cyclictest275-21systemd-journal10:45:360
315349962,3cyclictest20474-21ls07:55:110
315349962,3cyclictest17925-21expr10:25:110
315349962,3cyclictest10526-11brltty08:32:010
315349962,3cyclictest10526-11brltty07:36:340
315349962,1cyclictest0-21swapper/012:10:470
315349962,1cyclictest0-21swapper/011:25:300
315349962,1cyclictest0-21swapper/010:55:420
315349962,1cyclictest0-21swapper/009:41:340
315349961,2cyclictest30123-21ssh11:10:250
315349960,6cyclictest0-21swapper/011:32:200
315349960,6cyclictest0-21swapper/010:24:080
315349960,3cyclictest26707-21head10:10:190
315349960,0cyclictest0-21swapper/009:25:320
315479952,2cyclictest658-21snmpd08:25:033
315479952,2cyclictest4540-21wc08:30:183
315479952,2cyclictest31835-21cpuspeed07:10:123
315479952,2cyclictest22977-21ls08:00:133
315479952,2cyclictest19814-21expr09:05:113
315479952,2cyclictest12728-21expr08:50:123
315479952,2cyclictest11630-21gltestperf07:35:133
315479952,2cyclictest10801-21gltestperf08:45:153
315479951,3cyclictest1919-21ntp_kernel_pll_07:15:023
315479951,3cyclictest1919-21ntp_kernel_pll_07:15:013
315479951,3cyclictest17092-21grep09:00:123
315479950,4cyclictest4444-21apt-get07:20:093
315479950,3cyclictest275-21systemd-journal09:35:033
315439954,1cyclictest28-21ksoftirqd/212:05:012
315439953,1cyclictest32313-21grep07:10:142
315439952,2cyclictest7844-21gltestperf09:40:132
315439952,2cyclictest7599-21ntp_kernel_pll_07:25:172
315439952,2cyclictest658-21snmpd12:10:022
315439952,2cyclictest658-21snmpd08:41:092
315439952,2cyclictest6242-21ssh09:20:112
315439952,2cyclictest5966-21unixbench_singl07:20:172
315439952,2cyclictest501-21in:imuxsock08:25:472
315439952,2cyclictest487-21chrt08:21:512
315439952,2cyclictest29807-21grep11:30:122
315439952,2cyclictest29274-21expr08:15:132
315439952,2cyclictest28270-21awk11:10:122
315439952,2cyclictest23854-1kworker/u9:209:25:012
315439952,2cyclictest23747-21ssh12:25:122
315439952,2cyclictest19955-21cut10:45:182
315439952,2cyclictest16374-21taskset08:56:202
315439952,2cyclictest11402-21sh11:00:052
315439952,1cyclictest0-21swapper/211:25:062
315439952,1cyclictest0-21swapper/210:50:022
315439951,3cyclictest27421-21basename08:10:142
315439951,3cyclictest21104-21pluginstate07:55:162
315439951,3cyclictest18566-21/usr/sbin/munin07:50:132
315439950,3cyclictest275-21systemd-journal07:18:332
315439950,3cyclictest275-21systemd-journal07:18:332
315439950,0cyclictest0-21swapper/208:35:102
315389953,1cyclictest22-21ksoftirqd/107:50:101
315389951,3cyclictest12482-21/usr/sbin/munin08:50:111
315349953,1cyclictest501-21in:imuxsock08:42:270
315349953,1cyclictest21466-21diskmemload11:20:140
315349952,2cyclictest8580-21wc12:15:190
315349952,2cyclictest658-21snmpd07:10:040
315349952,2cyclictest30239-21wc08:15:180
315349952,2cyclictest2370-21cut07:15:120
315349952,2cyclictest2370-21cut07:15:110
315349952,2cyclictest18568-21cat07:50:130
315349952,2cyclictest17644-21cat09:00:150
315349952,2cyclictest14145-11brltty09:15:020
315349952,2cyclictest13004-21tune2fs08:50:150
315349952,2cyclictest12242-21cron08:50:000
315349952,2cyclictest10442-21expr10:40:110
315349951,3cyclictest13363-21ssh11:40:050
315349950,1cyclictest0-21swapper/009:55:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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