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2026-07-19 - 15:22
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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 Sun Jul 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
869223924,0sleep00-21swapper/007:25:120
859623725,0sleep10-21swapper/107:24:091
873923626,0sleep20-21swapper/207:25:462
190422927,0sleep30-21swapper/307:23:113
90039977,0cyclictest17707-21awk08:18:180
8305070,0irq/26-0000:00:3207-17auditd10:03:033
339970,0migration/313242-21latency_hist09:23:033
90159966,0cyclictest17756-40yum-updatesd-he11:28:372
90049960,0cyclictest0-21swapper/112:25:261
90049960,0cyclictest0-21swapper/110:16:191
339960,0migration/38897-21sh11:24:003
339960,0migration/38132-21sh12:00:323
339960,0migration/330818-21sh12:32:123
339960,0migration/324873-21sh10:39:433
339960,0migration/313030-21sh09:39:033
29815060,0irq/29-eth0-tx-2302-21munin-node08:53:230
29805060,0irq/28-eth0-rx-26809-21kthreadcore09:08:193
29805060,0irq/28-eth0-rx-1173-21memory12:13:233
179960,0migration/120165-21munin-node10:18:291
149960,0migration/020630-21kthreadcore10:03:230
149960,0migration/016451-21sh10:18:210
149960,0migration/014183-21sh09:41:400
90159954,0cyclictest5455-21idleruntime-cro07:48:022
90159950,0cyclictest0-21swapper/212:31:502
90159950,0cyclictest0-21swapper/211:27:492
90159950,0cyclictest0-21swapper/207:28:302
90049955,0cyclictest0-21swapper/112:39:471
90049955,0cyclictest0-21swapper/112:08:431
90049955,0cyclictest0-21swapper/111:52:101
90049955,0cyclictest0-21swapper/111:00:181
90049950,0cyclictest0-21swapper/111:28:591
90049950,0cyclictest0-21swapper/110:08:161
90049950,0cyclictest0-21swapper/109:13:341
90039954,0cyclictest13475-21munin-run10:18:030
339950,0migration/39980-21df_abs12:03:173
339950,0migration/3871-21aten_r1power_po09:53:173
339950,0migration/33829-21fschecks_time12:53:173
339950,0migration/332678-21kthreadcore11:38:233
339950,0migration/328300-21kthreadcore08:23:233
339950,0migration/328099-21kthreadcore12:48:223
339950,0migration/325438-21cpuspeed_turbos11:18:143
339950,0migration/324155-21aten_r1power_cu09:48:153
339950,0migration/324111-21cpuspeed_turbos11:53:153
339950,0migration/323624-21kthreadcore08:43:233
339950,0migration/323559-21fschecks_time10:23:173
339950,0migration/32189-21kthreadcore11:03:223
339950,0migration/321830-21irqcore09:28:203
339950,0migration/321208-21kthreadcore09:03:223
339950,0migration/319908-21taskset08:40:573
339950,0migration/319658-21idleruntime12:08:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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