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2026-07-29 - 05:41
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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 Jul 29, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1285828079,0sleep20-21swapper/219:27:532
1280524736,0sleep00-21swapper/019:27:190
1278823525,0sleep30-21swapper/319:27:063
1275623525,0sleep10-21swapper/119:26:401
13010991212,0cyclictest3524-21snmpd21:03:210
339960,0migration/33674-21sh23:44:223
339960,0migration/323215-21fschecks_count23:59:043
339960,0migration/322077-21sh22:39:463
339960,0migration/320543-21gltestperf00:54:053
339960,0migration/318808-21irqrtprio21:24:073
29805060,0irq/28-eth0-rx-9536-21users21:14:193
29805060,0irq/28-eth0-rx-0-21swapper/300:04:113
29805060,0irq/28-eth0-rx-0-21swapper/300:04:113
149960,0migration/027187-21sh00:57:060
149960,0migration/026889-21rt-features20:19:100
149960,0migration/024938-21sh21:44:330
149960,0migration/023301-21sh00:16:210
149960,0migration/020519-21sh20:18:500
149960,0migration/019182-21sh00:53:310
149960,0migration/015821-21unixbench-2d00:29:150
149960,0migration/01500-21sh21:50:310
130119960,0cyclictest0-21swapper/123:37:371
130109965,0cyclictest2773-21kthreadcore20:49:080
130109960,0cyclictest0-21swapper/023:59:070
130109960,0cyclictest0-21swapper/023:32:280
339950,0migration/38864-21kthreadcore22:34:103
339950,0migration/38007-21kthreadcore20:09:083
339950,0migration/37990-21taskset21:35:473
339950,0migration/34057-21kthreadcore20:49:093
339950,0migration/3405-21latency_hist00:23:513
339950,0migration/328595-21if_eth023:24:093
339950,0migration/325868-21kthreadcore22:44:063
339950,0migration/324512-21taskset23:01:253
339950,0migration/323663-21unixbench-2d20:39:143
339950,0migration/321181-21cpuspeed_turbos21:04:043
339950,0migration/320281-21cpu22:04:043
339950,0migration/316507-21taskset21:40:123
339950,0migration/315878-21kthreadcore23:54:093
339950,0migration/314689-21kthreadcore00:29:083
339950,0migration/314546-21kthreadcore19:49:083
339950,0migration/314016-21cpuspeed_turbos20:59:033
339950,0migration/312712-21munin-node23:34:053
339950,0migration/311635-21kthreadcore20:34:093
339950,0migration/311194-21aten_r1power_po00:49:033
329950,0watchdog/3627-21awk21:49:133
329950,0watchdog/32837-21munin-node23:09:063
329950,0watchdog/319135-21sort21:44:053
329950,0watchdog/311511-21sed22:14:183
329950,0watchdog/310240-21ssh00:47:143
329950,0watchdog/30-21swapper/323:14:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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