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2026-06-26 - 12:20
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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 Fri Jun 26, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
239725745,0sleep30-21swapper/319:22:203
233923228,0sleep10-21swapper/119:21:381
260023127,0sleep20-21swapper/219:24:312
261322723,0sleep00-21swapper/019:24:410
339960,0migration/39991-21sh21:57:463
339960,0migration/3586-21sh22:50:543
339960,0migration/322645-21munin-node00:16:323
339960,0migration/32133-21sh00:21:563
339960,0migration/320383-21sh22:06:213
339960,0migration/319413-21sh00:31:393
339960,0migration/313454-21sh00:47:413
339960,0migration/312928-21sh23:32:443
29805060,0irq/28-eth0-rx-4988-21cut00:26:243
29805060,0irq/28-eth0-rx-24341-21ssh23:58:563
29805060,0irq/28-eth0-rx-22022-21ps23:21:263
29805060,0irq/28-eth0-rx-18678-21ssh22:02:523
29805060,0irq/28-eth0-rx-17391-21iostat_ios22:41:263
29805060,0irq/28-eth0-rx-16171-21grep20:41:253
29805060,0irq/28-eth0-rx-14340-21tr19:31:263
28219960,0cyclictest0-21swapper/122:26:251
4150,0ktimersoftd/00-21swapper/023:51:330
4150,0ktimersoftd/00-21swapper/022:30:360
339950,0migration/37408-21latency_hist22:36:093
339950,0migration/34067-21munin-node23:11:243
339950,0migration/328723-21kthreadcore19:41:253
339950,0migration/326797-21irqcore00:01:263
339950,0migration/323899-21timerwakeupswit19:36:323
339950,0migration/319736-21latency22:21:293
339950,0migration/317621-21kthreadcore00:51:273
339950,0migration/317319-21sshd21:02:203
339950,0migration/312587-21kthreadcore23:51:273
339950,0migration/31122-21taskset21:52:413
339950,0migration/311015-21kthreadcore19:51:273
339950,0migration/310807-21cpuspeed_turbos20:16:203
339950,0migration/310091-21cpuspeed_turbos22:56:203
339950,0migration/310078-21sshd20:13:163
329950,0watchdog/34687-21iostat_ios20:56:233
329950,0watchdog/331803-21munin-node22:31:243
329950,0watchdog/328473-21sed22:26:283
329950,0watchdog/322207-21perl00:36:243
329950,0watchdog/310499-21cut21:21:273
29815050,0irq/29-eth0-tx-5108-21munin-node22:16:262
29815050,0irq/29-eth0-tx-27602-21iostat_ios21:51:262
29815050,0irq/29-eth0-tx-24132-21ls21:31:242
29815050,0irq/29-eth0-tx-18065-21ssh00:14:062
29815050,0irq/29-eth0-tx-0-21swapper/223:31:262
29815050,0irq/29-eth0-tx-0-21swapper/223:24:162
29815050,0irq/29-eth0-tx-0-21swapper/222:47:272
29805050,0irq/28-eth0-rx-23774-21grep23:01:283
29805050,0irq/28-eth0-rx-2036-21kthreadcore23:46:253
29805050,0irq/28-eth0-rx-20334-21switchtime19:56:323
29805050,0irq/28-eth0-rx-18854-21irqcore21:46:253
29805050,0irq/28-eth0-rx-18302-21head23:16:293
29805050,0irq/28-eth0-rx-0-21swapper/323:06:353
29805050,0irq/28-eth0-rx-0-21swapper/322:51:283
29805050,0irq/28-eth0-rx-0-21swapper/322:16:273
29805050,0irq/28-eth0-rx-0-21swapper/321:38:153
29805050,0irq/28-eth0-rx-0-21swapper/321:31:383
29805050,0irq/28-eth0-rx-0-21swapper/300:41:273
29805050,0irq/28-eth0-rx-0-21swapper/300:11:153
28229955,0cyclictest0-21swapper/200:00:522
28219955,0cyclictest0-21swapper/122:59:591
28219955,0cyclictest0-21swapper/122:12:131
28219955,0cyclictest0-21swapper/121:31:521
28219950,0cyclictest0-21swapper/123:55:581
28219950,0cyclictest0-21swapper/123:05:401
28219950,0cyclictest0-21swapper/122:02:171
28209955,0cyclictest0-21swapper/023:14:440
28209955,0cyclictest0-21swapper/021:50:050
28209954,0cyclictest0-21swapper/023:18:410
28209954,0cyclictest0-21swapper/000:35:180
28209950,0cyclictest0-21swapper/022:53:460
28209950,0cyclictest0-21swapper/021:36:500
259950,0migration/25605-21kthreadcore22:51:272
259950,0migration/227394-21sh00:21:032
259950,0migration/225154-21aten_r1power_en21:11:182
259950,0migration/222377-21sh23:39:572
259950,0migration/222263-21sh21:29:512
259950,0migration/214779-21kthreadcore22:01:262
249950,0watchdog/21823-21munin-node00:06:202
179950,0migration/16643-21kthreadcore21:56:251
179950,0migration/15259-21kthreadcore20:11:251
179950,0migration/121958-21sh21:29:061
179950,0migration/116947-21kthreadcore23:36:261
179950,0migration/114070-21cpuspeed_turbos22:21:231
149950,0migration/07832-21irqrtprio00:46:270
149950,0migration/07698-21kthreadcore00:26:280
149950,0migration/05053-21kernelversion20:56:240
149950,0migration/03840-21pmu-power00:41:310
149950,0migration/02952-21latency_hist19:26:080
149950,0migration/029089-21missed_timers23:41:280
149950,0migration/028476-21kthreadcore21:51:270
149950,0migration/02536-21unixbench_multi20:06:340
149950,0migration/025054-21cpuspeed_turbos22:46:210
149950,0migration/023942-21kthreadcore00:16:320
149950,0migration/023309-21kthreadcore20:01:240
149950,0migration/022495-21munin-node22:41:330
149950,0migration/017651-21fschecks_time23:56:230
149950,0migration/014518-21aten_r1power_en21:26:200
149950,0migration/01252-21irqrtprio20:31:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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