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2026-09-03 - 19:31
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Thu Sep 03, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1611324334,0sleep30-21swapper/307:26:533
2275424031,0sleep10-21swapper/107:28:511
2267823928,0sleep00-21swapper/007:27:580
2273523526,0sleep20-21swapper/207:28:362
35170,0ktimersoftd/30-21swapper/310:34:153
230809970,0cyclictest19733-21kthreadcore11:52:122
230809970,0cyclictest19733-21kthreadcore11:52:122
230789977,0cyclictest3524-21snmpd09:54:500
35160,0ktimersoftd/30-21swapper/310:54:263
35160,0ktimersoftd/30-21swapper/310:14:233
339960,0migration/34754-21sh12:58:143
339960,0migration/324848-21latency10:57:093
339960,0migration/316511-21kthreadcore09:57:073
329960,0watchdog/330626-21ssh10:22:493
329960,0watchdog/311861-21sh11:11:293
29815060,0irq/29-eth0-tx-9353-21munin-node12:07:082
29805060,0irq/28-eth0-rx-22812-21kthreadcore07:52:073
29805060,0irq/28-eth0-rx-19140-21munin-node12:47:113
29805060,0irq/28-eth0-rx-0-21swapper/312:37:063
29805060,0irq/28-eth0-rx-0-21swapper/312:20:263
259960,0migration/29697-21sh12:23:292
149960,0migration/030868-21sh10:23:290
149960,0migration/02069-21ntp_offset09:47:100
149960,0migration/014680-21ntp_offset10:32:150
8305050,0irq/26-0000:00:3606-21sed11:06:512
4150,0ktimersoftd/00-21swapper/011:12:430
339950,0migration/37804-21kthreadcore09:52:113
339950,0migration/36439-21fschecks_time11:27:033
339950,0migration/34825-21df_abs12:42:023
339950,0migration/32974-21diskmemload09:47:563
339950,0migration/329256-21kthreadcore10:42:083
339950,0migration/328224-21kthreadcore07:32:083
339950,0migration/323339-21kthreadcore11:17:073
339950,0migration/321545-21kthreadcore12:32:123
339950,0migration/321288-21munin-node09:22:053
339950,0migration/320374-21cpuspeed_turbos08:37:023
339950,0migration/318622-21kthreadcore08:12:073
339950,0migration/317306-21sh11:52:113
339950,0migration/317306-21sh11:52:113
339950,0migration/316676-21kthreadcore09:37:083
339950,0migration/316373-21kthreadcore11:32:073
339950,0migration/31568-21kthreadcore09:07:073
339950,0migration/314258-21irqrtprio08:32:053
339950,0migration/311650-21latency09:12:103
339950,0migration/311021-21kthreadcore11:47:083
329950,0watchdog/329320-21ssh10:04:333
329950,0watchdog/328587-21ssh12:53:223
329950,0watchdog/317555-21tr07:47:093
329950,0watchdog/310904-21cut12:07:063
329950,0watchdog/30-21swapper/308:17:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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