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2026-06-10 - 16:50
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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 Wed Jun 10, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2220824834,0sleep00-21swapper/007:23:550
2220824834,0sleep00-21swapper/007:23:550
2196524636,0sleep10-21swapper/107:21:071
2196524636,0sleep10-21swapper/107:21:071
2228223728,0sleep30-21swapper/307:24:463
2228223728,0sleep30-21swapper/307:24:463
2196023324,0sleep20-21swapper/207:21:042
2196023324,0sleep20-21swapper/207:21:042
223639999,0cyclictest3571-21lldpd09:23:101
4160,0ktimersoftd/02661-21ssh11:53:570
339960,0migration/36098-21gltestperf09:05:043
339960,0migration/325996-21sh09:35:493
339960,0migration/325288-21sh10:31:483
339960,0migration/324983-21dump-pmu-power12:44:543
339960,0migration/312991-21sh09:49:353
29805060,0irq/28-eth0-rx-1754-21grep12:30:103
29805060,0irq/28-eth0-rx-11162-21gltestperf09:30:063
223729960,0cyclictest0-21swapper/211:25:112
223729960,0cyclictest0-21swapper/207:55:112
223639965,0cyclictest24078-21basename08:55:061
223629963,0cyclictest19380-21kworker/0:012:40:090
179960,0migration/19565-21pmu-power11:55:151
149960,0migration/08952-21kthreadcore07:35:110
149960,0migration/08143-21sh10:22:170
149960,0migration/030668-21sh12:28:030
149960,0migration/018162-21latency_hist11:44:530
149960,0migration/017776-21ntp_kernel_pll_10:45:130
8305050,0irq/26-0000:00:8178-21munin-node12:35:052
339950,0migration/38844-21taskset12:51:403
339950,0migration/35399-21kthreadcore11:55:123
339950,0migration/34902-21cpuspeed_turbos07:35:043
339950,0migration/33441-21kthreadcore08:15:123
339950,0migration/331282-21fschecks_count10:00:053
339950,0migration/329825-21sh12:25:423
339950,0migration/329050-21aten_r1power_en10:55:043
339950,0migration/328972-21kthreadcore08:35:103
339950,0migration/328681-21missed_timers08:10:113
339950,0migration/328386-21kthreadcore12:45:103
339950,0migration/328305-21taskset10:53:493
339950,0migration/327114-21df_abs10:35:053
339950,0migration/326805-21taskset09:19:593
339950,0migration/326340-21kthreadcore09:55:103
339950,0migration/323297-21taskset10:12:403
339950,0migration/32308-21kthreadcore10:20:113
339950,0migration/322122-21kthreadcore09:15:093
339950,0migration/316476-21fschecks_count08:50:083
339950,0migration/315651-21processes10:25:123
339950,0migration/314560-21kthreadcore10:45:103
339950,0migration/314035-21kthreadcore11:40:123
339950,0migration/311331-21kthreadcore08:45:083
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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