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2026-07-16 - 05:29
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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 16, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2547925857,0sleep00-21swapper/019:23:460
2565724435,0sleep10-21swapper/119:25:511
2573923627,0sleep20-21swapper/219:26:482
2573523627,0sleep30-21swapper/319:26:453
258949983,0cyclictest872-21awk00:03:012
258949983,0cyclictest1135-21awk23:28:022
258949973,0cyclictest16805-21awk20:28:002
339960,0migration/37474-21sh21:44:363
339960,0migration/330591-21sh21:39:453
339960,0migration/330591-21sh21:39:453
339960,0migration/313375-21sh22:42:113
29815060,0irq/29-eth0-tx-8588-21munin-node21:08:050
29815060,0irq/29-eth0-tx-8213-21munin-node19:38:010
29815060,0irq/29-eth0-tx-30188-21munin-node21:23:090
29815060,0irq/29-eth0-tx-15630-21munin-node20:27:590
29805060,0irq/28-eth0-rx-6568-21sed23:28:123
29805060,0irq/28-eth0-rx-5123-21diskstats23:13:003
29805060,0irq/28-eth0-rx-32530-21python20:13:103
29805060,0irq/28-eth0-rx-29407-21unixbench_multi21:18:103
29805060,0irq/28-eth0-rx-26665-21cut22:13:043
29805060,0irq/28-eth0-rx-16666-21cut22:43:043
29805060,0irq/28-eth0-rx-1316-21diskstats19:32:573
29805060,0irq/28-eth0-rx-0-21swapper/322:55:523
258949962,0cyclictest5627-21awk00:23:032
258949960,0cyclictest0-21swapper/221:53:022
258949960,0cyclictest0-21swapper/200:43:082
258949960,0cyclictest0-21swapper/200:28:592
258939960,0cyclictest0-21swapper/123:54:281
258939960,0cyclictest0-21swapper/123:32:051
258939960,0cyclictest0-21swapper/123:09:321
258929960,0cyclictest0-21swapper/022:53:120
258929960,0cyclictest0-21swapper/022:22:560
258929960,0cyclictest0-21swapper/000:32:320
149960,0migration/030921-21taskset22:50:180
149960,0migration/030093-21sh00:34:090
149960,0migration/020870-21sh22:08:250
149960,0migration/019792-21runrttasks21:53:050
339950,0migration/38691-21kthreadcore00:23:063
339950,0migration/35681-21fschecks_count21:28:003
339950,0migration/34918-21kthreadcore20:18:043
339950,0migration/34836-21idleruntime-cro21:27:463
339950,0migration/330847-21fschecks_time20:37:593
339950,0migration/329801-21kthreadcore20:58:043
339950,0migration/329064-21kthreadcore19:28:043
339950,0migration/324291-21if_eth023:23:023
339950,0migration/323121-21taskset22:47:483
339950,0migration/322445-21taskset21:14:383
339950,0migration/319990-21irqrtprio21:53:053
339950,0migration/316415-21kthreadcore20:03:053
339950,0migration/315484-21kthreadcore23:53:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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