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2026-09-15 - 15:02
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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 792 highest latencies:
System rack1slot2.osadl.org (updated Tue Sep 15, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
62128079,0sleep00-21swapper/007:29:540
81826160,0sleep10-21swapper/107:31:511
61624634,0sleep30-21swapper/307:29:533
1014993939,0cyclictest26189-21md1_resync09:18:121
87222925,0sleep20-21swapper/207:32:202
8305070,0irq/26-0000:00:22271-21cpuspeed_turbos08:53:033
10089970,0cyclictest26190-21md0_resync09:28:050
8305060,0irq/26-0000:00:20640-21munin-node08:48:093
8305060,0irq/26-0000:00:16366-21ntp_states08:23:103
339960,0migration/34043-21munin-node08:18:083
339960,0migration/32992-21sh10:01:153
339960,0migration/315307-21pmu-power10:43:113
29815060,0irq/29-eth0-tx-7352-21munin-node08:43:040
29805060,0irq/28-eth0-rx-4741-21tr11:33:113
29805060,0irq/28-eth0-rx-1554-21sh11:53:033
29805060,0irq/28-eth0-rx-11558-21ssh12:14:503
29805060,0irq/28-eth0-rx-10993-21runrttasks09:48:033
29805060,0irq/28-eth0-rx-0-21swapper/312:54:173
29805060,0irq/28-eth0-rx-0-21swapper/310:35:423
27160,0ktimersoftd/25473-21kthreadcore12:48:082
179960,0migration/14558-21kthreadcore07:33:071
149960,0migration/05624-21latency_hist07:57:490
149960,0migration/031356-21sh10:35:140
149960,0migration/023085-21sh10:31:300
149960,0migration/020578-21timerandwakeup11:23:160
149960,0migration/011319-21sh10:04:560
10209966,0cyclictest6314-21runrttasks09:44:082
10209966,0cyclictest0-21swapper/211:50:162
10209966,0cyclictest0-21swapper/209:41:462
10209966,0cyclictest0-21swapper/209:41:462
10209960,0cyclictest0-21swapper/212:11:422
10209960,0cyclictest0-21swapper/210:20:332
10089960,0cyclictest0-21swapper/008:11:470
8305050,0irq/26-0000:00:9613-21grep07:38:033
8305050,0irq/26-0000:00:8154-21ssh10:41:172
8305050,0irq/26-0000:00:6314-21runrttasks07:35:083
8305050,0irq/26-0000:00:31833-21ssh10:36:382
8305050,0irq/26-0000:00:2676-21irqcore09:23:063
8305050,0irq/26-0000:00:2564-21ssh11:53:072
8305050,0irq/26-0000:00:24990-21crond11:47:492
8305050,0irq/26-0000:00:24941-21kthreadcore07:48:063
8305050,0irq/26-0000:00:23755-21ssh09:35:542
8305050,0irq/26-0000:00:22085-21switchtime12:38:152
8305050,0irq/26-0000:00:19954-21perl12:03:042
8305050,0irq/26-0000:00:17730-21open_files11:03:102
8305050,0irq/26-0000:00:16738-21ssh12:54:282
8305050,0irq/26-0000:00:15181-21switchtime09:28:143
8305050,0irq/26-0000:00:14745-21ssh11:23:042
8305050,0irq/26-0000:00:13964-21wc11:38:102
8305050,0irq/26-0000:00:12335-21cut12:33:142
8305050,0irq/26-0000:00:0-21swapper/309:08:023
8305050,0irq/26-0000:00:0-21swapper/308:33:073
8305050,0irq/26-0000:00:0-21swapper/307:53:143
8305050,0irq/26-0000:00:0-21swapper/307:43:083
339950,0migration/331169-21sh09:38:143
339950,0migration/331169-21sh09:38:143
339950,0migration/330867-21munin-node12:28:043
339950,0migration/330418-21munin-node10:18:053
339950,0migration/330258-21fschecks_time08:58:053
339950,0migration/32937-21cpu10:58:033
339950,0migration/322986-21rt-features11:43:113
339950,0migration/322648-21idleruntime12:23:053
339950,0migration/319874-21fschecks_time09:13:043
339950,0migration/318375-21fschecks_time10:48:033
339950,0migration/317241-21munin-node09:33:063
339950,0migration/314077-21gltestperf08:03:033
339950,0migration/312017-21sh10:06:583
339950,0migration/31057-21kthreadcore08:13:083
329950,0watchdog/39554-21grep12:33:133
329950,0watchdog/39077-21kthreadcore11:18:083
329950,0watchdog/38551-21iostat_ios08:43:083
329950,0watchdog/310304-21kthreadcore10:23:083
329950,0watchdog/30-21swapper/313:02:493
29815050,0irq/29-eth0-tx-32283-21munin-node08:38:060
29815050,0irq/29-eth0-tx-18652-21wc09:52:492
29815050,0irq/29-eth0-tx-17559-21kthreadcore10:08:062
29815050,0irq/29-eth0-tx-1384-21munin-node09:23:170
29815050,0irq/29-eth0-tx-0-21swapper/210:57:182
29815050,0irq/29-eth0-tx-0-21swapper/210:24:442
29815050,0irq/29-eth0-tx-0-21swapper/009:32:510
29815050,0irq/29-eth0-tx-0-21swapper/007:37:280
29805050,0irq/28-eth0-rx-7309-21cut07:58:073
29805050,0irq/28-eth0-rx-453-21cat10:53:153
29805050,0irq/28-eth0-rx-30672-21cut11:48:083
29805050,0irq/28-eth0-rx-25459-21iostat12:43:063
29805050,0irq/28-eth0-rx-23428-21ssh12:41:203
29805050,0irq/28-eth0-rx-14655-21cat10:08:063
29805050,0irq/28-eth0-rx-0-21swapper/312:48:073
29805050,0irq/28-eth0-rx-0-21swapper/312:18:123
29805050,0irq/28-eth0-rx-0-21swapper/312:09:583
29805050,0irq/28-eth0-rx-0-21swapper/312:01:373
29805050,0irq/28-eth0-rx-0-21swapper/311:38:093
29805050,0irq/28-eth0-rx-0-21swapper/311:30:103
29805050,0irq/28-eth0-rx-0-21swapper/311:23:083
29805050,0irq/28-eth0-rx-0-21swapper/311:13:063
29805050,0irq/28-eth0-rx-0-21swapper/311:12:093
29805050,0irq/28-eth0-rx-0-21swapper/311:04:453
29805050,0irq/28-eth0-rx-0-21swapper/310:16:103
29805050,0irq/28-eth0-rx-0-21swapper/309:42:583
29805050,0irq/28-eth0-rx-0-21swapper/308:28:013
259950,0migration/28311-21kthreadcore11:18:082
259950,0migration/25128-21idleruntime12:13:082
259950,0migration/231183-21fschecks_time12:28:042
259950,0migration/221651-21switchtime10:28:142
259950,0migration/217940-21cpuspeed_turbos10:48:022
249950,0watchdog/226305-21grep10:13:082
19150,0ktimersoftd/10-21swapper/112:41:521
179950,0migration/17497-21munin-node09:43:071
179950,0migration/13111-21kthreadcore08:38:071
179950,0migration/128620-21bash12:23:501
179950,0migration/126591-21rt-features11:08:111
179950,0migration/11980-21kthreadcore08:58:091
179950,0migration/11879-21timerandwakeup08:13:151
179950,0migration/118265-21kthreadcore11:23:091
179950,0migration/118165-21unixbench-2d11:03:151
179950,0migration/117635-21kthreadcore10:08:061
179950,0migration/117269-21taskset08:26:491
179950,0migration/11615-21cpuspeed_turbos09:23:021
179950,0migration/115061-21df_abs08:48:021
179950,0migration/114407-21timerandwakeup11:38:161
179950,0migration/113730-21switchtime08:43:161
179950,0migration/11171-21kthreadcore11:13:081
179950,0migration/110229-21munin-node07:38:061
169950,0watchdog/112921-21aten_r1power_en12:18:011
149950,0migration/06909-21aten_r1power_vo12:33:060
149950,0migration/03939-21munin-node10:58:070
149950,0migration/032654-21kthreadcore10:18:100
149950,0migration/032592-21sh11:49:480
149950,0migration/032576-21sh09:41:060
149950,0migration/032576-21sh09:41:060
149950,0migration/031926-21taskset08:36:370
149950,0migration/030432-21kthreadcore12:08:090
149950,0migration/030184-21taskset07:49:250
149950,0migration/02854-21kthreadcore08:58:090
149950,0migration/026783-21df_abs10:53:020
149950,0migration/026175-21latency_hist10:52:490
149950,0migration/024319-21kthreadcore10:13:080
149950,0migration/022789-21taskset07:44:000
149950,0migration/021792-21kthreadcore11:43:080
149950,0migration/021605-21irqrtprio11:08:060
149950,0migration/021532-21kthreadcore12:58:080
149950,0migration/021073-21kthreadcore12:03:080
149950,0migration/019584-21sh11:06:560
149950,0migration/017024-21irqrtprio12:38:070
149950,0migration/016802-21sh12:54:400
149950,0migration/016116-21missed_timers09:48:080
149950,0migration/015783-21kthreadcore09:08:070
149950,0migration/013657-21fschecks_time12:18:030
149950,0migration/013467-21kthreadcore10:43:080
149950,0migration/013220-21munin-node08:03:010
149950,0migration/012846-21kthreadcore11:38:090
149950,0migration/01265-21kthreadcore08:13:080
149950,0migration/010357-21latency09:03:090
10209955,0cyclictest0-21swapper/212:46:332
10209955,0cyclictest0-21swapper/211:32:552
10209955,0cyclictest0-21swapper/209:19:522
10209955,0cyclictest0-21swapper/209:08:122
10209955,0cyclictest0-21swapper/208:46:362
10209950,0cyclictest0-21swapper/211:14:002
10209950,0cyclictest0-21swapper/210:43:252
10209950,0cyclictest0-21swapper/209:27:162
10209950,0cyclictest0-21swapper/207:59:372
10149955,0cyclictest0-21swapper/111:58:121
10149955,0cyclictest0-21swapper/111:48:261
10149950,0cyclictest17073-21ssh12:55:261
10089955,0cyclictest0-21swapper/011:20:390
10089954,0cyclictest30584-21ssh11:31:220
10089950,0cyclictest0-21swapper/011:53:360
10089950,0cyclictest0-21swapper/009:14:320
8305040,0irq/26-0000:00:12997-21kthreadcore11:58:082
8305040,0irq/26-0000:00:0-21swapper/309:18:133
8305040,0irq/26-0000:00:0-21swapper/212:23:022
8305040,0irq/26-0000:00:0-21swapper/210:58:082
8305040,0irq/26-0000:00:0-21swapper/210:03:072
8305040,0irq/26-0000:00:0-21swapper/209:48:022
339940,0migration/322960-21kthreadcore08:08:043
339940,0migration/31166-21irqcore08:38:063
329940,0watchdog/38154-21cut09:03:083
329940,0watchdog/30-21swapper/309:53:043
29815040,0irq/29-eth0-tx-22685-21ssh11:28:002
29815040,0irq/29-eth0-tx-0-21swapper/008:27:270
29805040,0irq/28-eth0-rx-0-21swapper/312:02:533
29805040,0irq/28-eth0-rx-0-21swapper/310:38:183
29805040,0irq/28-eth0-rx-0-21swapper/310:27:543
259940,0migration/24886-21fschecks_count09:03:032
259940,0migration/24336-21kthreadcore08:38:082
259940,0migration/229030-21munin-node08:13:062
259940,0migration/22693-21latency_hist08:17:492
259940,0migration/217790-21kthreadcore12:18:082
259940,0migration/211133-21kthreadcore09:28:062
249940,0watchdog/23194-21port_sshpriv08:58:122
249940,0watchdog/227460-21ssh09:57:522
249940,0watchdog/223448-21grep09:13:082
23666240,0sleep00-21swapper/008:53:100
179940,0migration/19327-21kthreadcore09:03:081
179940,0migration/16338-21taskset10:22:581
179940,0migration/15034-3199-raid-check10:19:531
179940,0migration/13463-21fschecks_time10:58:041
179940,0migration/127629-21latency_hist12:07:501
179940,0migration/125482-21fschecks_time09:38:041
179940,0migration/125482-21fschecks_time09:38:041
179940,0migration/124338-21kthreadcore08:08:051
179940,0migration/123150-21kthreadcore09:13:081
179940,0migration/119154-21needreboot08:03:091
179940,0migration/118782-21kthreadcore10:28:071
179940,0migration/118267-21fschecks_count10:48:031
179940,0migration/117337-21sh09:49:361
179940,0migration/116828-21fschecks_time07:43:041
169940,0watchdog/18926-21kthreadcore11:18:081
169940,0watchdog/16314-21runrttasks08:33:001
169940,0watchdog/128547-21ssh10:14:321
169940,0watchdog/126812-21ssh09:56:401
169940,0watchdog/123498-21irqrtprio08:53:081
169940,0watchdog/123085-21cut12:58:091
169940,0watchdog/10-21swapper/111:33:131
149940,0migration/08466-21sh12:50:530
149940,0migration/028091-21kthreadcore09:18:080
10209943,0cyclictest3571-21lldpd07:37:282
10209943,0cyclictest3524-21snmpd11:08:112
10209943,0cyclictest3524-21snmpd08:23:402
10209943,0cyclictest3250-21irqbalance12:57:562
10209943,0cyclictest3250-21irqbalance08:33:052
10209943,0cyclictest3250-21irqbalance08:32:252
10209943,0cyclictest3250-21irqbalance08:09:152
10209943,0cyclictest3250-21irqbalance08:06:452
10209943,0cyclictest24451-21awk07:48:042
10209943,0cyclictest23159-21awk08:53:072
10209943,0cyclictest15736-21awk08:48:052
10149943,0cyclictest9153-21sadc12:52:501
10149943,0cyclictest5255-21awk12:13:091
10149943,0cyclictest3571-21lldpd12:28:041
10149943,0cyclictest3571-21lldpd07:50:291
10149943,0cyclictest27796-21ps10:53:061
10149943,0cyclictest2651-21awk11:53:081
10149943,0cyclictest25342-21awk12:43:051
10149943,0cyclictest17661-21awk11:43:051
10149943,0cyclictest1191-21awk10:38:041
10149940,0cyclictest0-21swapper/112:33:591
10089944,0cyclictest0-21swapper/012:44:220
10089944,0cyclictest0-21swapper/011:17:490
10089944,0cyclictest0-21swapper/010:40:270
10089944,0cyclictest0-21swapper/009:56:180
10089944,0cyclictest0-21swapper/008:29:070
10089944,0cyclictest0-21swapper/008:17:560
10089943,0cyclictest5191-21awk12:13:080
10089943,0cyclictest3571-21lldpd09:46:300
10089943,0cyclictest3524-21snmpd11:35:410
10089943,0cyclictest3250-21irqbalance12:00:160
10089943,0cyclictest31462-21awk12:28:060
259930,0migration/29619-21gltestperf07:38:032
169930,0watchdog/10-21swapper/111:28:081
169930,0watchdog/10-21swapper/110:43:081
169930,0watchdog/10-21swapper/110:33:281
169930,0watchdog/10-21swapper/110:02:521
169930,0watchdog/10-21swapper/109:57:521
169930,0watchdog/10-21swapper/109:33:041
169930,0watchdog/10-21swapper/109:28:081
169930,0watchdog/10-21swapper/109:09:241
10209932,0cyclictest32444-21grep07:53:052
10209930,0cyclictest16891-21perl07:43:042
10149933,0cyclictest3571-21lldpd07:53:591
10149932,0cyclictest3524-21snmpd07:57:551
10149932,0cyclictest2800-21munin-node08:18:071
10149932,0cyclictest18240-21grep08:28:031
10149930,0cyclictest19763-21perl12:03:041
10089933,0cyclictest6291-21kworker/0:112:22:530
10089933,0cyclictest3528-21kworker/0:210:22:500
10089933,0cyclictest3528-21kworker/0:210:07:520
10089933,0cyclictest2778-21kworker/0:109:57:520
10089933,0cyclictest2778-21kworker/0:108:47:540
10089933,0cyclictest27264-21kworker/0:007:57:580
10089933,0cyclictest27264-21kworker/0:007:37:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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