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2026-07-23 - 03:42
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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 23, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2403129691,0sleep00-21swapper/019:24:580
2396625241,0sleep10-21swapper/119:24:151
2430523829,0sleep30-21swapper/319:28:133
2420823627,0sleep20-21swapper/219:27:042
244009970,0cyclictest0-21swapper/120:33:381
339960,0migration/38588-21sh00:49:293
339960,0migration/34784-21missed_timers22:03:403
339960,0migration/331731-21sh22:20:423
339960,0migration/329151-21missed_timers23:03:413
339960,0migration/328026-21sh21:40:393
339960,0migration/325336-21sh22:36:453
339960,0migration/320282-21sh21:38:153
339960,0migration/316984-21fschecks_count23:18:363
339960,0migration/314104-21sh21:53:313
339960,0migration/311011-21sh22:49:003
329960,0watchdog/332449-21sh23:26:123
29815060,0irq/29-eth0-tx-28572-21munin-node21:23:400
29805060,0irq/28-eth0-rx-1072-21ssh23:44:043
244079965,0cyclictest18391-21cat22:13:392
243929965,0cyclictest22031-21perl21:18:330
149960,0migration/06952-21aten_r1power_fr20:23:330
149960,0migration/023904-21sh00:39:360
4150,0ktimersoftd/00-21swapper/022:26:260
339950,0migration/39035-21kthreadcore20:23:393
339950,0migration/36654-21munin-node21:48:373
339950,0migration/35210-21kthreadcore19:58:383
339950,0migration/35210-21kthreadcore19:58:383
339950,0migration/332544-21fschecks_count20:18:343
339950,0migration/332221-21df_abs19:33:343
339950,0migration/328930-21fschecks_count20:38:323
339950,0migration/322980-21df_abs21:58:343
339950,0migration/321228-21ksmtuned20:33:243
339950,0migration/316279-21kthreadcore20:28:383
339950,0migration/315333-21kthreadcore00:13:393
339950,0migration/314105-21taskset22:57:403
339950,0migration/313650-21taskset21:09:583
339950,0migration/312673-21munin-node23:53:383
339950,0migration/311992-21kthreadcore23:33:413
339950,0migration/310721-21kthreadcore22:08:383
329950,0watchdog/332490-21ssh23:08:363
329950,0watchdog/325150-21ssh23:39:283
329950,0watchdog/319962-21munin-node23:58:483
29815050,0irq/29-eth0-tx-5944-21kthreadcore22:23:402
29815050,0irq/29-eth0-tx-3139-21munin-node19:58:430
29815050,0irq/29-eth0-tx-3139-21munin-node19:58:430
29815050,0irq/29-eth0-tx-22639-21munin-node21:58:342
29815050,0irq/29-eth0-tx-18016-21kernelversion23:18:402
29815050,0irq/29-eth0-tx-1294-21ssh22:41:242
29815050,0irq/29-eth0-tx-10414-21munin-node20:03:400
29815050,0irq/29-eth0-tx-0-21swapper/222:55:532
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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