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2026-07-06 - 19:55
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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 Mon Jul 06, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
955024536,0sleep20-21swapper/207:23:552
954623727,0sleep30-21swapper/307:23:523
966323625,0sleep10-21swapper/107:25:141
944723026,0sleep00-21swapper/007:22:410
9885991717,0cyclictest3524-21snmpd10:50:120
9885991010,0cyclictest0-21swapper/009:29:060
98879960,0cyclictest21289-21diskmemload12:27:352
98879960,0cyclictest0-21swapper/210:07:162
8305060,0irq/26-0000:00:6358-21dump-pmu-power07:46:593
339960,0migration/37345-21munin-node09:52:243
339960,0migration/3345-21sh12:18:043
339960,0migration/324992-21sh10:02:393
339960,0migration/324843-21aten_r1power_fr08:22:113
29815060,0irq/29-eth0-tx-31926-21munin-node08:27:130
29815060,0irq/29-eth0-tx-3027-21munin-node08:07:210
29805060,0irq/28-eth0-rx-24655-21egrep09:47:123
149960,0migration/023494-21sh10:58:060
149960,0migration/021376-21fschecks_time10:22:140
149960,0migration/013173-21irqcore10:17:160
98879955,0cyclictest12073-21ssh12:44:462
98879954,0cyclictest24686-21awk09:07:002
98879950,0cyclictest0-21swapper/212:09:372
98869955,0cyclictest0-21swapper/112:46:111
98869955,0cyclictest0-21swapper/111:58:431
98869955,0cyclictest0-21swapper/111:56:591
98869955,0cyclictest0-21swapper/111:17:061
98869955,0cyclictest0-21swapper/111:07:201
98869955,0cyclictest0-21swapper/110:35:381
98869955,0cyclictest0-21swapper/110:24:461
98869950,0cyclictest0-21swapper/112:39:431
98869950,0cyclictest0-21swapper/112:08:391
98869950,0cyclictest0-21swapper/109:43:271
339950,0migration/3799-21runrttasks11:06:133
339950,0migration/37329-21fschecks_time09:37:143
339950,0migration/35009-21kthreadcore10:12:183
339950,0migration/332099-21kthreadcore10:07:183
339950,0migration/330181-21kthreadcore07:37:163
339950,0migration/32935-21kthreadcore09:12:183
339950,0migration/329247-21munin-node12:37:153
339950,0migration/328506-21munin-node11:22:153
339950,0migration/327824-21taskset08:00:403
339950,0migration/32434-21idleruntime11:07:163
339950,0migration/323549-21aten_r1power_en11:57:113
339950,0migration/323019-21munin-node12:52:173
339950,0migration/322765-21latency_hist10:42:003
339950,0migration/321149-21latency_hist08:42:003
339950,0migration/320908-21munin-node11:52:183
339950,0migration/319986-21kthreadcore12:12:203
339950,0migration/318069-21kthreadcore10:37:183
339950,0migration/313735-21munin-node11:32:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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