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2026-06-10 - 10:46
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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 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2691223826,0sleep20-21swapper/219:24:232
2600623627,0sleep30-21swapper/319:20:123
2665823525,0sleep10-21swapper/119:21:261
2667723228,0sleep00-21swapper/019:21:410
169970,0watchdog/10-21swapper/121:38:571
339960,0migration/332490-21fschecks_time23:50:043
339960,0migration/320352-21taskset23:24:433
339960,0migration/317823-21sh00:17:153
339960,0migration/316964-21munin-node00:00:033
339960,0migration/314580-21sh00:54:453
329960,0watchdog/33296-21grep00:45:103
329960,0watchdog/320324-21memory23:40:103
29815060,0irq/29-eth0-tx-23677-21munin-node19:45:150
29805060,0irq/28-eth0-rx-7732-21sh22:55:203
29805060,0irq/28-eth0-rx-6956-21iostat_ios23:35:083
29805060,0irq/28-eth0-rx-32766-21df21:40:033
29805060,0irq/28-eth0-rx-29688-21ntp_states21:35:103
29805060,0irq/28-eth0-rx-29622-21cut21:55:083
29805060,0irq/28-eth0-rx-27384-21tr22:50:083
29805060,0irq/28-eth0-rx-17740-21kthreadcore20:00:083
270199960,0cyclictest0-21swapper/220:25:042
27160,0ktimersoftd/20-21swapper/223:55:412
27160,0ktimersoftd/20-21swapper/221:40:062
149960,0migration/09052-21sh00:12:090
149960,0migration/0342-21kthreadcore19:25:070
149960,0migration/020477-21ntp_offset23:40:110
149960,0migration/012245-21sh00:34:360
8305050,0irq/26-0000:00:22236-21date22:29:512
8305050,0irq/26-0000:00:22236-21date22:29:512
339950,0migration/38744-21taskset19:30:503
339950,0migration/36118-21gltestperf22:20:053
339950,0migration/35306-21unixbench-2d22:35:173
339950,0migration/33595-21cpuspeed_turbos23:15:023
339950,0migration/332043-21diskmemload00:05:233
339950,0migration/327935-21kthreadcore22:30:083
339950,0migration/327552-21munin-node19:25:013
339950,0migration/325744-21kthreadcore20:30:053
339950,0migration/325704-21kthreadcore00:40:093
339950,0migration/323254-21kthreadcore21:50:083
339950,0migration/323228-21taskset19:42:233
339950,0migration/32109-21taskset00:25:393
339950,0migration/319863-21taskset00:36:483
339950,0migration/316848-21kthreadcore21:30:113
339950,0migration/316593-21kthreadcore22:05:083
339950,0migration/311745-21munin-node19:55:103
339950,0migration/311684-21kthreadcore21:05:083
329950,0watchdog/36736-21grep20:15:093
329950,0watchdog/34852-21sed19:50:173
329950,0watchdog/331564-21cat23:30:103
329950,0watchdog/329567-21cut23:10:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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