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2026-07-04 - 17:25
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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 rack1slot2.osadl.org (updated Sat Jul 04, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2700523829,0sleep10-21swapper/107:24:441
2714423728,0sleep30-21swapper/307:26:223
2028023635,0sleep20-21swapper/207:22:012
2682722824,0sleep00-21swapper/007:22:390
339960,0migration/38499-21timerwakeupswit12:12:173
339960,0migration/332473-21sh12:07:453
339960,0migration/322722-21kthreadcore12:22:083
339960,0migration/318773-21sh10:08:243
339960,0migration/314946-21sh10:44:113
339960,0migration/31219-21munin-node08:12:113
29805060,0irq/28-eth0-rx-9581-21df09:47:033
29805060,0irq/28-eth0-rx-5717-21nfs_client11:52:113
29805060,0irq/28-eth0-rx-4924-21ssh12:47:483
29805060,0irq/28-eth0-rx-3987-21diskstats11:17:033
29805060,0irq/28-eth0-rx-31290-21ssh09:38:583
272609960,0cyclictest0-21swapper/112:32:011
272559960,0cyclictest0-21swapper/012:17:240
272559960,0cyclictest0-21swapper/008:42:120
149960,0migration/025180-21sh09:53:360
149960,0migration/019995-21sh11:25:140
149960,0migration/01817-21kthreadcore08:37:090
149960,0migration/01813-21sh09:59:410
149960,0migration/015455-21munin-node09:32:020
8305050,0irq/26-0000:00:1918-21python12:27:142
339950,0migration/39434-21kthreadcore07:57:083
339950,0migration/38478-21kthreadcore12:32:083
339950,0migration/35890-21sh11:36:553
339950,0migration/326031-21kthreadcore07:47:073
339950,0migration/324013-21fschecks_time11:47:043
339950,0migration/32317-21kthreadcore09:42:073
339950,0migration/319757-21munin-node11:07:063
339950,0migration/318821-21kthreadcore08:47:083
339950,0migration/316744-21kthreadcore11:42:083
339950,0migration/315749-21mdstat09:07:093
339950,0migration/31480-21kthreadcore07:52:073
339950,0migration/313654-21irqcore11:22:083
339950,0migration/313271-21cpuspeed_turbos12:37:023
339950,0migration/312341-21kthreadcore07:37:063
339950,0migration/311407-21kthreadcore12:52:083
329950,0watchdog/36314-21runrttasks12:17:573
329950,0watchdog/331129-21ssh10:52:133
329950,0watchdog/326817-21python08:52:133
329950,0watchdog/319116-21memory08:02:093
329950,0watchdog/315188-21stty09:32:013
329950,0watchdog/30-21swapper/310:57:093
29815050,0irq/29-eth0-tx-8921-21ssh09:27:070
29815050,0irq/29-eth0-tx-31556-21munin-node09:22:040
29815050,0irq/29-eth0-tx-23693-21cut11:27:082
29815050,0irq/29-eth0-tx-19139-21if_eth1.209:52:052
29815050,0irq/29-eth0-tx-11056-21vmstat12:32:162
29815050,0irq/29-eth0-tx-0-21swapper/212:22:152
29815050,0irq/29-eth0-tx-0-21swapper/212:19:182
29815050,0irq/29-eth0-tx-0-21swapper/211:08:252
29815050,0irq/29-eth0-tx-0-21swapper/210:40:112
29815050,0irq/29-eth0-tx-0-21swapper/210:17:012
29815050,0irq/29-eth0-tx-0-21swapper/008:24:320
29815050,0irq/29-eth0-tx-0-21swapper/007:47:150
29815050,0irq/29-eth0-tx-0-21swapper/007:44:250
29805050,0irq/28-eth0-rx-9612-21kthreadcore09:27:083
29805050,0irq/28-eth0-rx-5439-21switchtime09:22:163
29805050,0irq/28-eth0-rx-4536-21irqstats10:02:073
29805050,0irq/28-eth0-rx-29906-21latency08:32:093
29805050,0irq/28-eth0-rx-29157-21kthreadcore07:27:083
29805050,0irq/28-eth0-rx-2834-21ssh12:28:433
29805050,0irq/28-eth0-rx-28183-21cut10:32:093
29805050,0irq/28-eth0-rx-23169-21ssh10:47:563
29805050,0irq/28-eth0-rx-2254-21kthreadcore11:32:093
29805050,0irq/28-eth0-rx-21528-21kthreadcore09:52:073
29805050,0irq/28-eth0-rx-19063-21kthreadcore10:27:083
29805050,0irq/28-eth0-rx-15995-21ssh12:00:013
29805050,0irq/28-eth0-rx-12611-21grep11:02:093
29805050,0irq/28-eth0-rx-0-21swapper/312:44:173
29805050,0irq/28-eth0-rx-0-21swapper/308:07:063
272639955,0cyclictest4128-21ssh11:32:432
272639955,0cyclictest0-21swapper/208:46:522
272639950,0cyclictest0-21swapper/210:29:392
272609955,0cyclictest0-21swapper/112:22:051
272609955,0cyclictest0-21swapper/112:07:351
272609955,0cyclictest0-21swapper/111:43:281
272609950,0cyclictest0-21swapper/109:44:351
272559955,0cyclictest0-21swapper/012:14:050
272559955,0cyclictest0-21swapper/011:17:300
272559955,0cyclictest0-21swapper/010:45:100
272559955,0cyclictest0-21swapper/009:11:500
272559950,0cyclictest0-21swapper/011:31:220
272559950,0cyclictest0-21swapper/010:34:180
272559950,0cyclictest0-21swapper/010:05:360
27150,0ktimersoftd/20-21swapper/210:05:032
259950,0migration/24962-21kthreadcore07:32:082
259950,0migration/24405-21fschecks_time11:17:042
259950,0migration/24396-21kthreadcore09:42:082
259950,0migration/24264-21kthreadcore11:52:092
259950,0migration/231002-21kthreadcore09:57:082
259950,0migration/228579-21sh10:16:392
259950,0migration/226793-21kthreadcore08:32:082
259950,0migration/224254-21latency_hist09:16:502
179950,0migration/17595-21fschecks_time12:52:041
179950,0migration/14361-21kthreadcore09:02:081
179950,0migration/13752-21kthreadcore12:47:091
179950,0migration/13386-21kthreadcore10:57:091
179950,0migration/128696-21ntp_offset10:32:111
179950,0migration/119590-21unixbench-2d12:37:161
179950,0migration/117092-21timerandwakeup12:17:161
179950,0migration/116968-21fschecks_time10:47:041
179950,0migration/115350-21kthreadcore08:02:071
179950,0migration/110116-21fschecks_time09:47:041
149950,0migration/0894-21munin-node07:27:100
149950,0migration/08746-21smart_sdb08:17:140
149950,0migration/06125-21kthreadcore10:57:100
149950,0migration/05195-21fschecks_time12:32:030
149950,0migration/05057-21munin-node10:37:100
149950,0migration/031874-21sh10:53:020
149950,0migration/030785-21kthreadcore08:57:070
149950,0migration/029436-21irqrtprio12:27:080
149950,0migration/029101-21kthreadcore11:47:090
149950,0migration/029079-21taskset12:44:070
149950,0migration/027631-21latency_hist08:11:500
149950,0migration/024835-21kthreadcore08:52:070
149950,0migration/024144-21aten_r1power_en08:32:010
149950,0migration/02340-21aten_r1power_fr07:32:020
149950,0migration/019197-21kthreadcore12:02:090
149950,0migration/018119-21munin-node10:07:160
149950,0migration/017830-21gltestperf08:27:030
149950,0migration/017254-21kthreadcore10:27:070
149950,0migration/017076-21kthreadcore11:42:090
149950,0migration/016609-21sh12:01:430
149950,0migration/015474-21kthreadcore08:02:070
149950,0migration/015435-21kthreadcore08:47:070
149950,0migration/015170-21kthreadcore12:37:080
149950,0migration/011483-21kthreadcore07:57:080
149950,0migration/010191-21gltestperf09:47:040
8305040,0irq/26-0000:00:0-21swapper/208:06:502
339940,0migration/39458-21taskset08:21:193
339940,0migration/331419-21latency_hist09:21:503
339940,0migration/327741-21latency_hist08:56:503
339940,0migration/319521-21kthreadcore12:02:093
329940,0watchdog/36175-21kthreadcore09:02:093
329940,0watchdog/330764-21kthreadcore11:12:093
329940,0watchdog/3298050irq/28-eth0-rx-08:27:013
329940,0watchdog/322958-21python07:42:133
329940,0watchdog/30-21swapper/310:12:133
329940,0watchdog/30-21swapper/308:43:573
29815040,0irq/29-eth0-tx-5889-21ssh11:36:552
29815040,0irq/29-eth0-tx-23906-21munin-node09:37:042
29815040,0irq/29-eth0-tx-16134-21ssh10:46:512
29815040,0irq/29-eth0-tx-14989-21tr11:22:092
29815040,0irq/29-eth0-tx-14707-21ssh11:42:022
29815040,0irq/29-eth0-tx-11751-21aten_r1power_po10:07:002
29815040,0irq/29-eth0-tx-0-21swapper/212:42:162
29815040,0irq/29-eth0-tx-0-21swapper/212:36:592
29815040,0irq/29-eth0-tx-0-21swapper/212:07:332
29815040,0irq/29-eth0-tx-0-21swapper/211:56:532
29815040,0irq/29-eth0-tx-0-21swapper/211:01:532
29815040,0irq/29-eth0-tx-0-21swapper/210:57:212
29815040,0irq/29-eth0-tx-0-21swapper/210:33:312
29815040,0irq/29-eth0-tx-0-21swapper/209:46:562
29815040,0irq/29-eth0-tx-0-21swapper/209:27:242
29815040,0irq/29-eth0-tx-0-21swapper/009:17:120
29815040,0irq/29-eth0-tx-0-21swapper/009:02:070
29805040,0irq/28-eth0-rx-0-21swapper/311:27:163
29805040,0irq/28-eth0-rx-0-21swapper/310:36:593
29805040,0irq/28-eth0-rx-0-21swapper/310:17:003
29805040,0irq/28-eth0-rx-0-21swapper/309:57:153
29805040,0irq/28-eth0-rx-0-21swapper/308:22:033
272639944,0cyclictest0-21swapper/211:12:042
272639943,0cyclictest3571-21lldpd12:12:042
272639943,0cyclictest3571-21lldpd10:42:032
272639943,0cyclictest3571-21lldpd09:15:332
272639943,0cyclictest3571-21lldpd08:55:012
272639943,0cyclictest3571-21lldpd08:42:002
272639943,0cyclictest3571-21lldpd08:38:002
272639943,0cyclictest3571-21lldpd08:06:292
272639943,0cyclictest3571-21lldpd07:44:292
272639943,0cyclictest3571-21lldpd07:38:002
272639943,0cyclictest3549-21awk08:17:052
272639943,0cyclictest3250-21irqbalance10:52:072
272639943,0cyclictest3250-21irqbalance08:12:062
272639943,0cyclictest10924-21awk08:22:062
272639941,0cyclictest0-21swapper/212:47:032
272609943,0cyclictest7130-21awk07:57:051
272609943,0cyclictest3524-21snmpd09:53:331
272609943,0cyclictest3524-21snmpd09:18:331
272609943,0cyclictest3524-21snmpd09:14:331
272609943,0cyclictest3524-21snmpd08:09:031
272609943,0cyclictest3524-21snmpd07:54:171
272609943,0cyclictest28720-21awk08:12:061
272609943,0cyclictest28524-21awk07:27:061
272609943,0cyclictest25183-21awk08:32:061
272609943,0cyclictest24325-21awk11:47:061
272609943,0cyclictest10996-21awk11:02:071
272559943,0cyclictest528-21awk11:52:060
272559943,0cyclictest3571-21lldpd08:09:300
272559943,0cyclictest3524-21snmpd12:25:200
272559943,0cyclictest3524-21snmpd11:39:500
272559943,0cyclictest24986-21awk09:37:050
272559940,0cyclictest0-21swapper/010:26:480
272559940,0cyclictest0-21swapper/007:52:030
259940,0migration/26846-21aten_r1power_po12:52:022
259940,0migration/25176-21latency_hist10:21:502
259940,0migration/227845-21munin-node08:57:012
259940,0migration/220968-21missed_timers09:32:082
249940,0watchdog/223974-21telnet07:47:012
249940,0watchdog/223239-21ssh11:47:012
249940,0watchdog/222214-21kthreadcore12:02:092
179940,0migration/19483-21kthreadcore10:42:101
179940,0migration/16587-21irqcore10:22:071
179940,0migration/131088-21kthreadcore08:57:071
179940,0migration/123863-21kthreadcore08:52:071
179940,0migration/122090-21kthreadcore07:42:081
179940,0migration/120479-21kthreadcore11:07:071
179940,0migration/118236-21missed_timers11:22:101
179940,0migration/117397-21munin-node12:02:041
179940,0migration/11676-21kthreadcore10:37:071
179940,0migration/116609-21kthreadcore10:07:071
179940,0migration/115231-21irqcore10:27:061
179940,0migration/114958-21kthreadcore07:37:071
179940,0migration/114063-21sh09:30:101
179940,0migration/113514-21kthreadcore08:22:081
179940,0migration/113414-21aten_r1power_cu08:47:001
169940,0watchdog/19078-21kthreadcore11:37:091
169940,0watchdog/17007-21kthreadcore07:32:081
169940,0watchdog/129380-21kthreadcore09:37:091
169940,0watchdog/123977-21chrt07:47:011
169940,0watchdog/122577-21perl12:42:061
169940,0watchdog/122391-21ssh09:33:571
169940,0watchdog/112913-21chrt08:43:571
169940,0watchdog/11226-21cut12:27:101
169940,0watchdog/10-21swapper/112:12:091
169940,0watchdog/10-21swapper/110:16:571
149940,0migration/08112-21irqcore12:52:070
149940,0migration/023450-21kthreadcore11:07:080
149940,0migration/023183-21kthreadcore10:12:080
149940,0migration/016481-21runrttasks07:41:220
8305030,0irq/26-0000:00:0-21swapper/209:06:562
329930,0watchdog/37009-21kthreadcore07:32:083
329930,0watchdog/30-21swapper/309:12:173
29805030,0irq/28-eth0-rx-0-21swapper/310:21:513
29805030,0irq/28-eth0-rx-0-21swapper/308:36:553
272639932,0cyclictest3571-21lldpd09:02:022
272639932,0cyclictest3571-21lldpd07:53:592
272639932,0cyclictest32606-21awk09:22:062
272609932,0cyclictest545-21awk11:52:071
272609932,0cyclictest4612-21awk11:17:061
272609932,0cyclictest30277-21fschecks_time11:32:051
272609932,0cyclictest28284-21awk11:12:071
272609932,0cyclictest27227-21sensors11:27:131
272609932,0cyclictest25948-21awk10:52:071
272609932,0cyclictest10585-21grep09:07:041
272609930,0cyclictest3366-21perl08:17:031
272559933,0cyclictest0-21swapper/011:16:420
272559932,0cyclictest3571-21lldpd09:46:030
272559932,0cyclictest30816-21kthreadcore10:17:060
272559932,0cyclictest30529-21munin-node12:47:030
272559932,0cyclictest22593-21wc10:47:150
272559932,0cyclictest16206-21sensors11:02:140
272559932,0cyclictest14505-21tr09:07:080
259930,0migration/218852-21kthreadcore08:27:062
249930,0watchdog/212286-21python07:57:132
249930,0watchdog/20-21swapper/207:27:082
19130,0ktimersoftd/18457-21sh11:57:031
179930,0migration/15495-21kthreadcore10:02:071
169930,0watchdog/10-21swapper/110:12:131
169930,0watchdog/10-21swapper/109:56:531
169930,0watchdog/10-21swapper/108:27:011
272609921,0cyclictest31278-21cat08:36:501
272609920,0cyclictest0-21swapper/109:21:501
272559920,0cyclictest0-21swapper/012:06:530
272559920,0cyclictest0-21swapper/011:31:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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