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2026-06-02 - 01:38
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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 Tue Jun 02, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1611223627,0sleep30-21swapper/319:22:293
1590523322,0sleep00-21swapper/019:20:060
1617223228,0sleep10-21swapper/119:23:111
1588723026,0sleep20-21swapper/219:19:522
16329992222,0cyclictest14255-21sensors23:04:342
163299970,0cyclictest0-21swapper/221:59:262
163279970,0cyclictest0-21swapper/020:39:260
8305060,0irq/26-0000:00:3207-17auditd19:29:113
35160,0ktimersoftd/30-21swapper/322:41:553
339960,0migration/37824-21sh22:04:483
339960,0migration/328309-21sh23:51:043
339960,0migration/328013-21sh22:36:283
339960,0migration/327067-21sh23:33:543
339960,0migration/320869-21df_abs20:34:243
339960,0migration/319290-21munin-node21:14:303
29805060,0irq/28-eth0-rx-643-21ntp_states22:19:313
163299960,0cyclictest0-21swapper/222:31:262
163299960,0cyclictest0-21swapper/221:51:052
163289965,0cyclictest14199-21perl21:34:251
163289960,0cyclictest0-21swapper/123:49:311
163279960,0cyclictest4376-21kthreadcore20:44:280
149960,0migration/05786-21kthreadcore22:24:270
149960,0migration/032003-21sh00:14:140
149960,0migration/031885-21gltestperf19:34:240
149960,0migration/025020-21latency_hist23:14:110
149960,0migration/024668-21kthreadcore22:54:290
149960,0migration/022924-21smart_sdb20:09:340
149960,0migration/01784-21sh22:21:010
149960,0migration/017170-21sh23:25:190
149960,0migration/010451-21kthreadcore00:19:290
339950,0migration/38193-21fschecks_time21:49:253
339950,0migration/36859-21if_eth1.322:44:283
339950,0migration/332737-21fschecks_time00:14:253
339950,0migration/331411-21cpuspeed_turbos20:19:223
339950,0migration/331083-21sh21:59:373
339950,0migration/330810-21latency_hist21:44:113
339950,0migration/330683-21taskset19:33:473
339950,0migration/328460-21hwlatdetect19:54:263
339950,0migration/328014-21kthreadcore00:29:303
339950,0migration/327966-21latency_hist00:49:123
339950,0migration/32642-21sh23:36:533
339950,0migration/324983-21kthreadcore00:44:303
339950,0migration/324069-21latency_hist20:59:103
339950,0migration/322591-21missed_timers23:09:313
339950,0migration/320873-21munin-node00:04:323
339950,0migration/315066-21kthreadcore23:44:293
339950,0migration/310317-21taskset22:25:223
329950,0watchdog/327106-21munin-node21:19:383
329950,0watchdog/325400-21cut23:14:223
329950,0watchdog/319622-21kthreadcore00:24:303
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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