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2026-07-02 - 05:15
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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 Jul 02, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2919323728,0sleep20-21swapper/219:23:442
2915123723,0sleep00-21swapper/019:23:100
2940023627,0sleep30-21swapper/319:26:053
2929623223,0sleep10-21swapper/119:24:551
339960,0migration/330567-21sh23:28:283
339960,0migration/317870-21sh22:26:533
29815060,0irq/29-eth0-tx-32194-21sed23:47:032
29805060,0irq/28-eth0-rx-25049-21cut00:41:563
29805060,0irq/28-eth0-rx-21460-21perl21:51:533
29805060,0irq/28-eth0-rx-14692-21date00:36:383
29805060,0irq/28-eth0-rx-10638-21ntp_states19:31:583
29805060,0irq/28-eth0-rx-0-21swapper/322:18:263
295159960,0cyclictest0-21swapper/121:31:581
295149960,0cyclictest0-21swapper/022:27:320
295149960,0cyclictest0-21swapper/000:07:200
179960,0migration/126993-21irqrtprio23:46:541
149960,0migration/07888-21sh00:50:320
149960,0migration/04388-21sh23:12:590
149960,0migration/028264-21sh23:08:360
149960,0migration/021096-21sh22:07:150
339950,0migration/39762-21kthreadcore00:11:573
339950,0migration/39719-21sh23:55:063
339950,0migration/39517-21kthreadcore21:01:563
339950,0migration/36033-21taskset23:16:483
339950,0migration/35768-21aten_r1power_po22:01:493
339950,0migration/34124-21taskset19:28:543
339950,0migration/34092-21munin-node21:41:553
339950,0migration/330562-21fschecks_count00:26:533
339950,0migration/329778-21taskset20:55:003
339950,0migration/328625-21idleruntime22:51:533
339950,0migration/328521-21kthreadcore22:31:553
339950,0migration/328147-21diskmemload00:06:503
339950,0migration/327803-21kernelversion21:36:523
339950,0migration/32764-21kthreadcore20:56:563
339950,0migration/325975-21turbostat19:46:383
339950,0migration/321318-21munin-node23:22:043
339950,0migration/320712-21switchtime22:07:043
339950,0migration/319050-21taskset21:09:263
339950,0migration/318185-21kthreadcore20:01:553
339950,0migration/317517-21kthreadcore00:36:563
339950,0migration/317121-21kthreadcore20:21:543
339950,0migration/313026-21irqcore21:46:553
339950,0migration/312803-21kthreadcore19:56:553
339950,0migration/311166-21taskset22:58:343
329950,0watchdog/37572-21ntp_states21:21:573
329950,0watchdog/33306-21python21:57:013
329950,0watchdog/30-21swapper/322:41:573
329950,0watchdog/30-21swapper/321:34:373
29815050,0irq/29-eth0-tx-8744-21df_abs23:36:522
29815050,0irq/29-eth0-tx-4119-21munin-node22:56:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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