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2026-07-22 - 13:03
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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 100 highest latencies:
System rack1slot2.osadl.org (updated Wed Jul 22, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
462227069,0sleep30-21swapper/319:25:353
472323927,0sleep10-21swapper/119:26:451
447223828,0sleep20-21swapper/219:23:502
456022824,0sleep00-21swapper/019:24:520
49259965,0cyclictest16109-21diskmemload22:05:231
49259960,0cyclictest0-21swapper/123:07:401
339960,0migration/35715-21sh22:35:263
339960,0migration/33264-21kthreadcore22:53:353
339960,0migration/331505-21sh00:26:483
339960,0migration/329761-21sh00:07:053
339960,0migration/328787-21taskset23:28:333
339960,0migration/328296-21sh22:12:203
339960,0migration/322618-21sh22:44:533
339960,0migration/314712-21sh00:17:383
339960,0migration/31263-21sh23:12:013
339960,0migration/312607-21sh23:54:363
29805060,0irq/28-eth0-rx-4032-21cat23:13:353
29805060,0irq/28-eth0-rx-31746-21port_sshpriv00:43:403
29805060,0irq/28-eth0-rx-12080-21munin-run23:38:163
149960,0migration/0983-21sh23:11:110
149960,0migration/012721-21sh22:21:120
8305050,0irq/26-0000:00:5050-21wc19:28:163
8305050,0irq/26-0000:00:2694-21if_eth1.319:48:313
8305050,0irq/26-0000:00:10156-21awk20:38:322
49269955,0cyclictest0-21swapper/222:06:492
49269954,0cyclictest3524-21snmpd19:53:342
49269950,0cyclictest0-21swapper/222:42:272
49269950,0cyclictest0-21swapper/222:00:502
49269950,0cyclictest0-21swapper/221:41:172
49259953,0cyclictest14900-21awk22:23:361
49259950,0cyclictest0-21swapper/122:53:191
49259950,0cyclictest0-21swapper/122:33:181
49259950,0cyclictest0-21swapper/122:12:101
49259950,0cyclictest0-21swapper/100:26:011
49239955,0cyclictest0-21swapper/021:38:360
339950,0migration/39379-21fschecks_count19:53:293
339950,0migration/37411-21kthreadcore20:58:363
339950,0migration/36066-21munin-node00:28:363
339950,0migration/34557-21kthreadcore21:38:363
339950,0migration/3373-21missed_timers21:13:373
339950,0migration/332129-21kthreadcore22:13:343
339950,0migration/330481-21kthreadcore20:28:353
339950,0migration/329287-21munin-node20:03:403
339950,0migration/326723-21kthreadcore20:48:343
339950,0migration/325220-21kthreadcore23:43:343
339950,0migration/324243-21taskset00:40:143
339950,0migration/320047-21cpuspeed_turbos21:08:283
339950,0migration/319287-21taskset21:04:593
339950,0migration/318028-21munin-node22:03:373
339950,0migration/317764-21kthreadcore19:58:333
339950,0migration/317764-21kthreadcore19:58:333
339950,0migration/317714-21taskset23:19:533
339950,0migration/311993-21kthreadcore21:43:353
339950,0migration/310736-21kthreadcore22:58:333
329950,0watchdog/36180-21cut21:18:353
329950,0watchdog/36088-21perl20:13:303
329950,0watchdog/331249-21kthreadcore19:43:343
329950,0watchdog/33071-21kthreadcore00:08:353
329950,0watchdog/323673-21python23:03:393
329950,0watchdog/317482-21irqcore20:43:353
329950,0watchdog/30-21swapper/322:21:073
29815050,0irq/29-eth0-tx-24963-21iostat_ios00:23:342
29815050,0irq/29-eth0-tx-0-21swapper/020:58:300
29805050,0irq/28-eth0-rx-8491-21ssh00:33:283
29805050,0irq/28-eth0-rx-6314-21runrttasks21:58:503
29805050,0irq/28-eth0-rx-32187-21ssh22:52:543
29805050,0irq/28-eth0-rx-31165-21fschecks_time20:53:283
29805050,0irq/28-eth0-rx-17797-21kthreadcore23:58:343
29805050,0irq/28-eth0-rx-0-21swapper/323:48:343
29805050,0irq/28-eth0-rx-0-21swapper/323:38:403
29805050,0irq/28-eth0-rx-0-21swapper/322:28:293
29805050,0irq/28-eth0-rx-0-21swapper/300:48:293
249950,0watchdog/228893-21cut21:53:352
249950,0watchdog/20-21swapper/220:03:302
249950,0watchdog/20-21swapper/200:13:552
19150,0ktimersoftd/10-21swapper/121:48:501
179950,0migration/19632-21kthreadcore23:33:371
179950,0migration/14710-21kthreadcore00:48:341
179950,0migration/128805-21timerwakeupswit22:28:421
179950,0migration/127851-21kthreadcore21:33:331
179950,0migration/118758-21kthreadcore22:43:351
179950,0migration/116501-21cpuspeed_turbos20:43:301
179950,0migration/114476-21sh00:16:551
179950,0migration/112338-21taskset19:33:231
179950,0migration/111604-21kthreadcore20:38:331
179950,0migration/111012-21munin-node23:18:301
169950,0watchdog/16829-21kthreadcore20:13:341
169950,0watchdog/131247-21kthreadcore19:43:341
169950,0watchdog/128445-21grep23:28:311
169950,0watchdog/10-21swapper/122:58:191
149950,0migration/09853-21latency_hist21:43:160
149950,0migration/09480-21sh00:33:320
149950,0migration/08402-21taskset23:13:420
149950,0migration/08104-21munin-node22:38:320
149950,0migration/07352-21munin-node00:13:300
149950,0migration/05938-21kthreadcore21:58:340
149950,0migration/031382-21sh22:50:290
149950,0migration/02941-21irqcore00:48:330
149950,0migration/027658-21kthreadcore00:23:350
149950,0migration/02646-21kthreadcore00:08:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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