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2026-07-18 - 17:03
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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 Sat Jul 18, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3038723728,0sleep20-21swapper/207:24:422
3033823728,0sleep30-21swapper/307:24:073
3028523526,0sleep10-21swapper/107:23:291
3051223127,0sleep00-21swapper/007:26:080
8305060,0irq/26-0000:00:18486-21processes12:28:233
339960,0migration/33801-21sh11:08:543
339960,0migration/332134-21sh10:48:333
339960,0migration/331713-21munin-node08:58:113
339960,0migration/319056-21irqrtprio10:08:153
339960,0migration/315120-21sh10:40:523
307439960,0cyclictest0-21swapper/211:38:262
307429966,0cyclictest21471-21awk08:28:161
307419965,0cyclictest18423-21ssh09:32:540
29805060,0irq/28-eth0-rx-31379-21grep10:33:143
29805060,0irq/28-eth0-rx-17163-21cut10:23:153
29805060,0irq/28-eth0-rx-17163-21cut10:23:153
29805060,0irq/28-eth0-rx-10626-21perl11:33:143
8305050,0irq/26-0000:00:0-21swapper/310:57:593
4150,0ktimersoftd/00-21swapper/010:00:300
339950,0migration/37796-21kthreadcore11:13:173
339950,0migration/34804-21cpuspeed_turbos09:43:103
339950,0migration/34700-21kthreadcore07:53:153
339950,0migration/33316-21diskmemload12:03:183
339950,0migration/332493-21munin-node07:28:173
339950,0migration/332077-21gltestperf08:13:123
339950,0migration/330105-21munin-node08:08:213
339950,0migration/325101-21sh12:15:503
339950,0migration/323518-21gltestperf11:58:133
339950,0migration/322778-21munin-node12:33:173
339950,0migration/322442-21munin-node10:28:153
339950,0migration/319733-21munin-node09:33:123
339950,0migration/319147-21kthreadcore09:48:183
339950,0migration/316788-21fschecks_time12:48:133
339950,0migration/315334-21kthreadcore08:43:173
339950,0migration/314539-21kthreadcore09:28:193
339950,0migration/313321-21taskset07:38:103
329950,0watchdog/37366-21munin-node11:28:263
329950,0watchdog/330970-21perl12:38:143
329950,0watchdog/313249-21sensors12:43:223
329950,0watchdog/311740-21kthreadcore10:03:183
307439955,0cyclictest0-21swapper/211:48:222
307439955,0cyclictest0-21swapper/210:22:362
307439954,0cyclictest3524-21snmpd11:34:362
307439953,0cyclictest22800-21ssh11:20:522
307439952,0cyclictest7358-21diskstats12:43:132
307439952,0cyclictest28150-21perl07:48:132
307439952,0cyclictest28145-21df11:43:112
307439952,0cyclictest22336-21python12:48:232
307439951,0cyclictest4511-21munin-node09:43:212
307439950,0cyclictest0-21swapper/212:18:472
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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