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2026-07-04 - 22:30
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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 100 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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