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2026-06-14 - 08:57
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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 Sun Jun 14, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
826724839,0sleep20-21swapper/219:20:482
861324434,0sleep30-21swapper/319:24:493
832323526,0sleep10-21swapper/119:21:311
755422925,0sleep00-21swapper/019:20:300
87119960,0cyclictest0-21swapper/020:55:360
4160,0ktimersoftd/06138-21diskstats20:30:220
339960,0migration/39777-21sh00:41:533
339960,0migration/37734-21sh23:08:173
339960,0migration/33337-21sh23:42:383
339960,0migration/329934-21munin-node21:30:273
339960,0migration/327560-21sh21:27:443
339960,0migration/326805-21sh23:20:243
339960,0migration/322370-21kthreadcore22:20:293
339960,0migration/322370-21kthreadcore22:20:293
339960,0migration/321048-21sh21:40:553
339960,0migration/316124-21sh23:12:383
339960,0migration/310857-21munin-node20:55:273
29815060,0irq/29-eth0-tx-23632-21munin-node20:20:300
29815060,0irq/29-eth0-tx-16684-21munin-node21:00:360
29805060,0irq/28-eth0-rx-16015-21sh21:58:273
149960,0migration/01162-21sh00:37:200
87129955,0cyclictest0-21swapper/123:42:561
87129954,0cyclictest6363-21sensors23:05:331
87129950,0cyclictest0-21swapper/123:15:401
87129950,0cyclictest0-21swapper/122:30:061
87119955,0cyclictest0-21swapper/023:37:500
87119955,0cyclictest0-21swapper/021:44:090
8305050,0irq/26-0000:00:32225-21df21:50:212
8305050,0irq/26-0000:00:2163-21date23:25:102
8305050,0irq/26-0000:00:20208-21sed21:25:102
339950,0migration/37460-21fschecks_count00:05:253
339950,0migration/37410-21kthreadcore20:50:283
339950,0migration/33756-21kthreadcore20:25:283
339950,0migration/329415-21kthreadcore20:00:283
339950,0migration/326901-21latency_hist20:00:103
339950,0migration/326857-21kthreadcore19:35:273
339950,0migration/322379-21gltestperf22:40:243
339950,0migration/316348-21irqcore22:55:283
339950,0migration/313947-21munin-node22:35:263
339950,0migration/31326-21sh00:20:263
339950,0migration/311762-21munin-node22:15:273
339950,0migration/31129-21smart_sda20:45:323
339950,0migration/310038-21gltestperf00:25:283
329950,0watchdog/330638-21kthreadcore00:35:303
329950,0watchdog/329953-21kthreadcore22:05:293
329950,0watchdog/315754-21grep21:20:293
329950,0watchdog/30-21swapper/322:26:453
29815050,0irq/29-eth0-tx-8152-21port_sshpriv22:10:342
29815050,0irq/29-eth0-tx-5629-21munin-node21:35:222
29815050,0irq/29-eth0-tx-4180-21switchtime22:45:362
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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