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2026-09-05 - 02:21
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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 100 highest latencies:
System rack1slot2.osadl.org (updated Sat Sep 05, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271540,0ktimersoftd/25173-21perf19:31:462
1202024433,0sleep00-21swapper/019:28:260
1209523223,0sleep10-21swapper/119:29:191
1157923127,0sleep30-21swapper/319:27:213
8305060,0irq/26-0000:00:28131-21hwlatdetect20:27:113
8305060,0irq/26-0000:00:1547-21crond19:46:563
339960,0migration/36605-21munin-node20:12:123
339960,0migration/327388-21sh22:10:283
339960,0migration/322036-21sh22:43:513
339960,0migration/31286-21kthreadcore00:07:153
339960,0migration/312688-21kernelversion22:02:133
339960,0migration/312636-21sh22:21:513
29805060,0irq/28-eth0-rx-4534-21iostat_ios23:32:143
29805060,0irq/28-eth0-rx-4118-21irqstats21:57:143
27160,0ktimersoftd/20-21swapper/200:57:182
149960,0migration/028292-21sh22:27:380
149960,0migration/02353-21sh23:30:120
149960,0migration/018263-21sh22:03:440
123899965,0cyclictest7302-21ssh22:55:262
8305050,0irq/26-0000:00:28644-21crond23:46:582
8305050,0irq/26-0000:00:10837-21grep22:01:572
35150,0ktimersoftd/30-21swapper/321:55:283
339950,0migration/37482-21kthreadcore23:52:143
339950,0migration/37153-21munin-node00:12:083
339950,0migration/35814-21kthreadcore00:47:163
339950,0migration/35428-21taskset20:55:483
339950,0migration/34447-21kthreadcore20:32:163
339950,0migration/34370-21kthreadcore23:12:133
339950,0migration/329568-21munin-node22:47:183
339950,0migration/325799-21kthreadcore21:32:143
339950,0migration/325365-21kthreadcore20:02:143
339950,0migration/321661-21kthreadcore20:22:143
339950,0migration/321591-21aten_r1power_en22:27:093
339950,0migration/32119-21munin-node19:47:093
339950,0migration/321057-21fschecks_time21:07:113
339950,0migration/319907-21taskset21:06:213
339950,0migration/319141-21timerwakeupswit20:17:223
339950,0migration/316805-21kthreadcore00:52:153
339950,0migration/312639-21kthreadcore20:37:133
329950,0watchdog/39788-21grep21:22:083
329950,0watchdog/37508-21iostat_ios22:37:133
329950,0watchdog/328648-21ssh00:02:213
329950,0watchdog/323841-21python21:47:203
329950,0watchdog/30-21swapper/300:37:173
29815050,0irq/29-eth0-tx-5895-21kthreadcore00:27:162
29815050,0irq/29-eth0-tx-5895-21kthreadcore00:27:162
29815050,0irq/29-eth0-tx-26933-21tune2fs00:42:132
29815050,0irq/29-eth0-tx-23692-21diskmemload00:12:292
29815050,0irq/29-eth0-tx-19807-21munin-node19:37:240
29815050,0irq/29-eth0-tx-0-21swapper/223:14:302
29815050,0irq/29-eth0-tx-0-21swapper/222:32:262
29815050,0irq/29-eth0-tx-0-21swapper/222:27:032
29815050,0irq/29-eth0-tx-0-21swapper/222:18:212
29815050,0irq/29-eth0-tx-0-21swapper/221:47:042
29815050,0irq/29-eth0-tx-0-21swapper/221:42:412
29815050,0irq/29-eth0-tx-0-21swapper/200:00:492
29805050,0irq/28-eth0-rx-9081-21sh00:32:103
29805050,0irq/28-eth0-rx-8483-21munin-node21:17:183
29805050,0irq/28-eth0-rx-4980-21cat23:51:583
29805050,0irq/28-eth0-rx-4268-21unixbench-2d22:32:223
29805050,0irq/28-eth0-rx-16138-21cut19:32:133
29805050,0irq/28-eth0-rx-12966-21munin-node22:22:183
29805050,0irq/28-eth0-rx-10127-21kthreadcore22:57:143
29805050,0irq/28-eth0-rx-0-21swapper/323:42:163
29805050,0irq/28-eth0-rx-0-21swapper/323:37:163
29805050,0irq/28-eth0-rx-0-21swapper/323:24:563
29805050,0irq/28-eth0-rx-0-21swapper/323:03:093
29805050,0irq/28-eth0-rx-0-21swapper/300:27:113
29805050,0irq/28-eth0-rx-0-21swapper/300:27:113
29805050,0irq/28-eth0-rx-0-21swapper/300:23:473
259950,0migration/232573-21kthreadcore00:07:142
259950,0migration/229190-21kthreadcore21:12:142
259950,0migration/225651-21kthreadcore21:07:152
259950,0migration/222760-21sh00:18:362
259950,0migration/219566-21sh23:40:192
259950,0migration/217611-21munin-node00:52:222
259950,0migration/211985-21munin-node20:57:192
249950,0watchdog/24008-21kthreadcore20:32:162
249950,0watchdog/212807-21aten_r1power_en20:17:082
179950,0migration/130926-21kthreadcore23:47:161
179950,0migration/128574-21kthreadcore20:47:161
169950,0watchdog/128418-21ssh00:42:171
149950,0migration/09877-21kthreadcore20:57:150
149950,0migration/09698-21taskset21:58:380
149950,0migration/07389-21kthreadcore22:17:150
149950,0migration/06122-21kthreadcore20:32:170
149950,0migration/03756-21irqrtprio21:17:140
149950,0migration/032713-21kthreadcore20:52:130
149950,0migration/032460-21aten_r1power_cu21:37:070
149950,0migration/032350-21kthreadcore23:47:170
149950,0migration/031519-21kthreadcore00:42:180
149950,0migration/028109-21kthreadcore20:47:150
149950,0migration/027939-21fschecks_time20:27:100
149950,0migration/027684-21kthreadcore21:32:150
149950,0migration/026741-21irqrtprio23:07:140
149950,0migration/024470-21sh23:05:290
149950,0migration/024366-21gltestperf20:02:100
149950,0migration/023765-21kthreadcore23:42:160
149950,0migration/023497-21kthreadcore23:22:150
149950,0migration/023423-21taskset21:29:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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