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2026-06-26 - 18:58
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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 Fri Jun 26, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1071725241,0sleep00-21swapper/007:24:150
1055225041,0sleep20-21swapper/207:22:212
1080624435,0sleep10-21swapper/107:25:161
1014823827,0sleep30-21swapper/307:21:373
339960,0migration/34135-21latency_hist08:51:113
339960,0migration/327876-21munin-node10:21:363
339960,0migration/324894-21kthreadcore12:51:293
339960,0migration/320292-21sh11:32:253
339960,0migration/311357-21sh08:56:113
29805060,0irq/28-eth0-rx-5730-21kthreadcore11:06:293
29805060,0irq/28-eth0-rx-27061-21perl12:16:253
29805060,0irq/28-eth0-rx-17303-21perl09:41:253
29805060,0irq/28-eth0-rx-0-21swapper/311:51:293
29805060,0irq/28-eth0-rx-0-21swapper/309:36:233
109579960,0cyclictest0-21swapper/208:21:282
109559960,0cyclictest0-21swapper/010:21:290
109559960,0cyclictest0-21swapper/009:29:460
109559960,0cyclictest0-21swapper/009:16:220
8305050,0irq/26-0000:00:22268-21vmstat11:51:372
4150,0ktimersoftd/00-21swapper/012:06:100
4150,0ktimersoftd/00-21swapper/010:20:040
339950,0migration/37827-21taskset10:49:283
339950,0migration/37360-21gltestperf10:31:243
339950,0migration/329958-21latency_hist10:26:113
339950,0migration/329282-21latency_hist08:46:113
339950,0migration/328788-21munin-node09:26:333
339950,0migration/32603-21aten2.4-expect12:21:243
339950,0migration/322269-21cpuspeed_turbos07:56:233
339950,0migration/321826-21munin-node07:31:323
339950,0migration/320872-21idleruntime12:31:263
339950,0migration/317963-21taskset08:12:173
339950,0migration/31730-21munin-node12:01:273
339950,0migration/313037-21cpuspeed_turbos10:16:243
339950,0migration/312209-21munin-node12:26:263
329950,0watchdog/322645-21cut09:01:303
329950,0watchdog/30-21swapper/311:41:303
29815050,0irq/29-eth0-tx-7860-21munin-node08:31:270
29815050,0irq/29-eth0-tx-6422-21tr09:51:272
29815050,0irq/29-eth0-tx-459-21munin-node12:01:292
29815050,0irq/29-eth0-tx-3524-21snmpd09:06:150
29815050,0irq/29-eth0-tx-29798-21ssh12:54:192
29815050,0irq/29-eth0-tx-25281-21munin-node09:46:322
29815050,0irq/29-eth0-tx-15110-21munin-node10:36:282
29815050,0irq/29-eth0-tx-14650-21ssh11:49:192
29815050,0irq/29-eth0-tx-10723-21munin-run11:11:112
29815050,0irq/29-eth0-tx-0-21swapper/211:01:522
29815050,0irq/29-eth0-tx-0-21swapper/210:56:482
29815050,0irq/29-eth0-tx-0-21swapper/210:42:402
29815050,0irq/29-eth0-tx-0-21swapper/210:21:432
29815050,0irq/29-eth0-tx-0-21swapper/210:03:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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