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2026-08-23 - 18:01
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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 Sun Aug 23, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2624826665,0sleep00-21swapper/007:30:400
2600725453,0sleep10-21swapper/107:27:531
2593724738,0sleep20-21swapper/207:27:062
2597523727,0sleep30-21swapper/307:27:353
263399970,0cyclictest0-21swapper/112:40:231
263399970,0cyclictest0-21swapper/110:48:361
339960,0migration/38123-21sh11:24:063
339960,0migration/330409-21munin-node12:16:093
339960,0migration/329458-21sh12:15:373
339960,0migration/326880-21switchtime10:36:223
339960,0migration/326092-21sh10:18:413
339960,0migration/325777-21sh08:11:183
339960,0migration/324067-21munin-node09:41:123
339960,0migration/314384-21sh11:07:523
339960,0migration/313725-21sh12:23:453
339960,0migration/311274-21sh12:02:263
329960,0watchdog/39447-21sh11:42:353
329960,0watchdog/35405-21cpuspeed_turbos08:01:073
29815060,0irq/29-eth0-tx-23314-21munin-node08:36:110
263439960,0cyclictest0-21swapper/209:47:432
263399964,0cyclictest0-21swapper/112:46:221
263399964,0cyclictest0-21swapper/112:28:241
263399964,0cyclictest0-21swapper/111:48:211
263399964,0cyclictest0-21swapper/109:48:041
263389960,0cyclictest0-21swapper/009:52:140
8305050,0irq/26-0000:00:0-21swapper/308:26:153
8305050,0irq/26-0000:00:0-21swapper/211:30:562
4150,0ktimersoftd/00-21swapper/010:21:240
339950,0migration/39184-21aten_r1power_cu09:11:063
339950,0migration/34422-21munin-node09:26:163
339950,0migration/33852-21kthreadcore09:46:143
339950,0migration/332155-21kthreadcore08:41:133
339950,0migration/332114-21munin-node11:01:133
339950,0migration/330308-21taskset09:22:553
339950,0migration/326995-21kthreadcore10:01:133
339950,0migration/326684-21kthreadcore11:16:153
339950,0migration/325397-21kthreadcore12:31:143
339950,0migration/323312-21cpuspeed_turbos07:51:093
339950,0migration/321930-21kthreadcore11:51:143
339950,0migration/321744-21needreboot07:46:153
339950,0migration/32158-21fschecks_time07:36:103
339950,0migration/318074-21fschecks_count11:31:103
339950,0migration/317281-21munin-node09:16:103
339950,0migration/316870-21if_eth111:11:133
339950,0migration/316407-21latency_hist12:45:563
339950,0migration/315882-21kthreadcore12:06:163
339950,0migration/311824-21munin-node09:31:183
339950,0migration/311133-21kthreadcore09:51:133
339950,0migration/310979-21kthreadcore08:46:123
339950,0migration/310765-21kthreadcore11:26:143
329950,0watchdog/34168-21python07:56:193
329950,0watchdog/33659-21chrt10:42:113
329950,0watchdog/329849-21unixbench_singl08:36:233
329950,0watchdog/321953-21missed_timers08:31:153
329950,0watchdog/321070-21sensors_volt12:26:193
329950,0watchdog/316814-21memory11:46:153
329950,0watchdog/313324-21grep08:51:113
329950,0watchdog/30-21swapper/309:56:033
29815050,0irq/29-eth0-tx-0-21swapper/008:53:030
29815050,0irq/29-eth0-tx-0-21swapper/008:46:060
29815050,0irq/29-eth0-tx-0-21swapper/007:37:480
29805050,0irq/28-eth0-rx-7584-21ssh12:40:173
29805050,0irq/28-eth0-rx-32594-21tr11:56:143
29805050,0irq/28-eth0-rx-28338-21kthreadcore08:16:143
29805050,0irq/28-eth0-rx-12337-21kthreadcore10:11:143
29805050,0irq/28-eth0-rx-0-21swapper/312:56:123
29805050,0irq/28-eth0-rx-0-21swapper/312:51:173
29805050,0irq/28-eth0-rx-0-21swapper/311:36:083
29805050,0irq/28-eth0-rx-0-21swapper/310:49:443
29805050,0irq/28-eth0-rx-0-21swapper/310:26:103
29805050,0irq/28-eth0-rx-0-21swapper/310:22:533
29805050,0irq/28-eth0-rx-0-21swapper/310:06:163
263439955,0cyclictest0-21swapper/212:47:072
263439955,0cyclictest0-21swapper/212:16:422
263439955,0cyclictest0-21swapper/210:24:552
263439954,0cyclictest3524-21snmpd11:51:092
263439950,0cyclictest0-21swapper/212:00:372
263439950,0cyclictest0-21swapper/210:15:372
263439950,0cyclictest0-21swapper/210:04:442
263439950,0cyclictest0-21swapper/209:58:542
263399955,0cyclictest0-21swapper/111:27:331
263399955,0cyclictest0-21swapper/111:07:411
263399955,0cyclictest0-21swapper/109:36:141
263399950,0cyclictest0-21swapper/112:12:481
263399950,0cyclictest0-21swapper/111:31:581
263389955,0cyclictest0-21swapper/011:56:090
263389955,0cyclictest0-21swapper/010:34:200
263389955,0cyclictest0-21swapper/008:21:250
263389950,0cyclictest0-21swapper/012:35:060
263389950,0cyclictest0-21swapper/012:25:290
263389950,0cyclictest0-21swapper/011:35:200
263389950,0cyclictest0-21swapper/011:23:400
263389950,0cyclictest0-21swapper/009:42:180
259950,0migration/220687-21munin-node09:36:242
19150,0ktimersoftd/10-21swapper/110:17:041
169950,0watchdog/10-21swapper/110:36:151
149950,0migration/05833-21aten_r1power_vo09:31:090
149950,0migration/05676-21sh11:02:240
149950,0migration/04847-21timerwakeupswit09:26:220
149950,0migration/029602-21kthreadcore12:51:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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