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2026-06-22 - 15:13
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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 Mon Jun 22, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3150323725,0sleep00-21swapper/007:23:580
3134523727,0sleep30-21swapper/307:22:093
3140823424,0sleep10-21swapper/107:22:511
3135523022,0sleep20-21swapper/207:22:162
8305060,0irq/26-0000:00:3206-17auditd12:50:522
339960,0migration/37131-21sh09:59:033
339960,0migration/35478-21sh10:54:263
339960,0migration/323185-21munin-node09:11:083
339960,0migration/318987-21munin-node10:41:153
317409960,0cyclictest0-21swapper/112:13:241
317399963,0cyclictest9427-21kworker/0:112:28:490
29815060,0irq/29-eth0-tx-7082-21munin-node08:16:100
29815060,0irq/29-eth0-tx-31953-21munin-node07:26:130
29805060,0irq/28-eth0-rx-31191-21python08:06:143
29805060,0irq/28-eth0-rx-31002-21yum12:21:203
29805060,0irq/28-eth0-rx-15676-21tr10:21:103
29805060,0irq/28-eth0-rx-0-21swapper/311:42:123
259960,0migration/217874-21sh10:23:282
179960,0migration/128724-21munin-node08:31:021
169960,0watchdog/1406-21grep07:26:061
149960,0migration/021790-21kthreadcore09:31:090
149960,0migration/017587-21sh10:22:400
149960,0migration/016904-21sh11:20:210
8305050,0irq/26-0000:00:6774-21date07:30:513
8305050,0irq/26-0000:00:0-21swapper/207:46:172
339950,0migration/3894-21munin-node08:11:083
339950,0migration/38413-21kthreadcore07:51:083
339950,0migration/3771-21sh11:27:323
339950,0migration/35332-21kthreadcore08:56:093
339950,0migration/34618-21kthreadcore07:26:113
339950,0migration/33944-21taskset10:35:543
339950,0migration/3343-21kthreadcore09:36:083
339950,0migration/331500-21kthreadcore08:31:083
339950,0migration/331098-21munin-node08:51:113
339950,0migration/328261-21taskset08:28:463
339950,0migration/322262-21gltestperf10:46:063
339950,0migration/321185-21taskset08:24:593
339950,0migration/320557-21fschecks_time09:31:053
339950,0migration/320034-21kthreadcore10:06:093
339950,0migration/318253-21taskset12:36:043
339950,0migration/318169-21kthreadcore12:16:093
339950,0migration/314131-21fschecks_time11:56:043
339950,0migration/313364-21munin-node09:01:123
339950,0migration/311780-21timerandwakeup09:41:173
339950,0migration/311744-21irqcore07:56:063
339950,0migration/311070-21cpuspeed_turbos08:41:053
339950,0migration/310857-21kthreadcore10:56:093
329950,0watchdog/38676-21cut12:46:113
329950,0watchdog/36314-21runrttasks10:11:593
329950,0watchdog/34795-21interrupts08:36:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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