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2026-08-13 - 12:46
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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 Thu Aug 13, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1059626463,0sleep20-21swapper/219:28:272
1059626463,0sleep20-21swapper/219:28:272
1061523728,0sleep10-21swapper/119:28:421
1061523728,0sleep10-21swapper/119:28:421
1061223424,0sleep30-21swapper/319:28:403
1061223424,0sleep30-21swapper/319:28:403
1049322824,0sleep00-21swapper/019:27:120
1049322824,0sleep00-21swapper/019:27:120
108199999,0cyclictest3524-21snmpd20:38:530
4160,0ktimersoftd/00-21swapper/000:51:120
339960,0migration/39474-21sh22:16:033
339960,0migration/33220-21sh23:50:123
339960,0migration/327739-21sh22:29:383
339960,0migration/312341-21munin-node22:55:233
339960,0migration/312155-21idleruntime22:20:213
29815060,0irq/29-eth0-tx-29150-21munin-node20:05:190
29815060,0irq/29-eth0-tx-14752-21munin-node19:55:290
29805060,0irq/28-eth0-rx-16636-21perl21:45:193
29805060,0irq/28-eth0-rx-12648-21fschecks_time23:55:183
149960,0migration/08125-21sh21:57:140
149960,0migration/06931-21idleruntime-cro21:40:040
149960,0migration/029492-21sh21:32:180
149960,0migration/027689-21sh22:29:300
149960,0migration/025806-21kthreadcore20:45:220
149960,0migration/010233-21kthreadcore22:55:210
108309960,0cyclictest0-21swapper/222:54:392
339950,0migration/39564-21irqrtprio23:15:203
339950,0migration/39313-21fschecks_count00:50:203
339950,0migration/38800-21fschecks_time21:20:173
339950,0migration/37048-21unixbench_multi20:30:283
339950,0migration/35304-21munin-node00:10:153
339950,0migration/35283-21runrttasks00:26:043
339950,0migration/35260-21munin-node20:55:203
339950,0migration/34186-21kthreadcore21:15:233
339950,0migration/3398-21kthreadcore20:05:233
339950,0migration/332744-21kthreadcore20:50:253
339950,0migration/331747-21kthreadcore22:10:223
339950,0migration/331102-21taskset00:41:393
339950,0migration/330789-21sh21:35:063
339950,0migration/329550-21fschecks_count00:05:173
339950,0migration/329471-21kthreadcore21:50:233
339950,0migration/327080-21kthreadcore20:00:223
339950,0migration/322952-21kthreadcore19:35:223
339950,0migration/321848-21ksmtuned21:26:533
339950,0migration/319704-21if_eth1.223:40:213
339950,0migration/315619-21latency_hist21:45:043
339950,0migration/313568-21fschecks_count22:40:173
339950,0migration/311691-21taskset22:37:093
339950,0migration/311458-21irqrtprio23:35:213
339950,0migration/310342-21kthreadcore19:50:223
329950,0watchdog/39994-21netstat20:10:233
329950,0watchdog/38812-21awk20:35:193
329950,0watchdog/327753-21ssh00:02:323
329950,0watchdog/325285-21ssh23:25:163
329950,0watchdog/321167-21python20:40:273
329950,0watchdog/317355-21chrt22:04:273
329950,0watchdog/30-21swapper/323:10:163
329950,0watchdog/30-21swapper/321:55:513
329950,0watchdog/30-21swapper/300:15:243
29815050,0irq/29-eth0-tx-29793-21perl00:05:172
29815050,0irq/29-eth0-tx-0-21swapper/019:40:240
29815050,0irq/29-eth0-tx-0-21swapper/019:32:460
29805050,0irq/28-eth0-rx-5870-21cut23:30:213
29805050,0irq/28-eth0-rx-32544-21aten_r1power_cu00:45:163
29805050,0irq/28-eth0-rx-30278-21kthreadcore20:25:223
29805050,0irq/28-eth0-rx-23554-21irqcore00:20:213
29805050,0irq/28-eth0-rx-19929-21cat00:55:233
29805050,0irq/28-eth0-rx-16238-21irqrtprio23:00:213
29805050,0irq/28-eth0-rx-0-21swapper/323:45:223
29805050,0irq/28-eth0-rx-0-21swapper/323:05:223
29805050,0irq/28-eth0-rx-0-21swapper/322:55:033
29805050,0irq/28-eth0-rx-0-21swapper/322:08:133
29805050,0irq/28-eth0-rx-0-21swapper/321:05:163
29805050,0irq/28-eth0-rx-0-21swapper/319:40:143
29805050,0irq/28-eth0-rx-0-21swapper/300:35:403
29805050,0irq/28-eth0-rx-0-21swapper/300:31:373
259950,0migration/226414-21fschecks_time20:25:172
19150,0ktimersoftd/10-21swapper/120:09:541
19150,0ktimersoftd/10-21swapper/119:34:541
179950,0migration/126455-21aten_r1power_po22:10:151
179950,0migration/124614-21kthreadcore00:00:221
179950,0migration/121520-21ksmtuned19:57:521
179950,0migration/112383-21fschecks_count23:55:171
169950,0watchdog/116782-21expr21:45:191
169950,0watchdog/10-21swapper/123:26:521
149950,0migration/0975-21kthreadcore22:50:220
149950,0migration/08493-21kthreadcore23:50:230
149950,0migration/05210-21idleruntime20:55:190
149950,0migration/04140-21kthreadcore23:10:220
149950,0migration/031827-21kthreadcore20:50:240
149950,0migration/030078-21kthreadcore21:50:230
149950,0migration/029799-21sh00:23:130
149950,0migration/02979-21kthreadcore19:45:220
149950,0migration/029026-21kthreadcore21:10:210
149950,0migration/028039-21latency_hist22:30:040
149950,0migration/02758-21irqcore23:30:200
149950,0migration/027557-21kthreadcore23:25:220
149950,0migration/025539-21taskset00:59:460
149950,0migration/025412-21sh22:08:090
149950,0migration/022591-21taskset21:45:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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