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2026-04-27 - 12:25
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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 Mon Apr 27, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1302624536,0sleep10-21swapper/119:19:331
1293624432,0sleep20-21swapper/219:18:302
1291223727,0sleep30-21swapper/319:18:193
1303523524,0sleep00-21swapper/019:19:400
132349999,0cyclictest3524-21snmpd22:45:550
339960,0migration/332145-21sh00:49:443
339960,0migration/330525-21kthreadcore00:11:333
339960,0migration/323594-21sh00:45:023
339960,0migration/323467-21kthreadcore23:11:303
339960,0migration/322984-21munin-node00:26:303
339960,0migration/322494-21sh22:13:123
339960,0migration/317346-21sh21:32:503
339960,0migration/312780-21proc_pri22:06:363
339960,0migration/311592-21sh00:16:563
339960,0migration/311193-21sh21:47:193
29805060,0irq/28-eth0-rx-9725-21fschecks_time23:41:273
29805060,0irq/28-eth0-rx-27783-21sh21:41:163
29805060,0irq/28-eth0-rx-27783-21sh21:41:163
29805060,0irq/28-eth0-rx-0-21swapper/322:41:303
149960,0migration/05611-21sh00:33:120
149960,0migration/029217-21kthreadcore23:51:320
149960,0migration/018626-21sh21:36:080
8305050,0irq/26-0000:00:12951-21ls23:06:132
339950,0migration/37301-21fschecks_time20:01:283
339950,0migration/37146-21diskmemload22:22:213
339950,0migration/36732-21kthreadcore23:01:333
339950,0migration/35406-21munin-node20:41:343
339950,0migration/35393-21kthreadcore20:21:313
339950,0migration/330282-21aten_r1power_fr22:01:263
339950,0migration/323977-21timerandwakeup21:16:383
339950,0migration/322199-21taskset23:26:473
339950,0migration/321419-21kthreadcore20:31:333
339950,0migration/321155-21munin-node20:11:253
339950,0migration/31886-21fschecks_time21:26:283
339950,0migration/31777-21latency22:56:333
339950,0migration/314272-21taskset23:23:503
339950,0migration/31256-21taskset19:31:333
339950,0migration/31208-21diskmemload23:53:293
329950,0watchdog/332722-21iostat_ios19:56:283
329950,0watchdog/332151-21ssh21:23:163
329950,0watchdog/328656-21kthreadcore22:16:323
329950,0watchdog/325936-21ps22:51:373
329950,0watchdog/325223-21perl19:51:283
329950,0watchdog/324037-21sh23:31:173
329950,0watchdog/321612-21aten_r1power_cu21:56:243
329950,0watchdog/313598-21tr21:11:323
329950,0watchdog/313209-21cut00:36:373
329950,0watchdog/311011-21sh22:46:253
329950,0watchdog/30-21swapper/323:58:093
329950,0watchdog/30-21swapper/323:47:493
29815050,0irq/29-eth0-tx-31204-21ssh21:21:370
29815050,0irq/29-eth0-tx-18972-21munin-node21:36:262
29815050,0irq/29-eth0-tx-0-21swapper/019:31:330
29805050,0irq/28-eth0-rx-664-21tr21:01:333
29805050,0irq/28-eth0-rx-21608-21ssh00:25:483
29805050,0irq/28-eth0-rx-15856-21kthreadcore20:26:323
29805050,0irq/28-eth0-rx-14773-21tr21:51:303
29805050,0irq/28-eth0-rx-0-21swapper/323:36:273
29805050,0irq/28-eth0-rx-0-21swapper/323:20:233
29805050,0irq/28-eth0-rx-0-21swapper/323:06:183
29805050,0irq/28-eth0-rx-0-21swapper/322:29:143
29805050,0irq/28-eth0-rx-0-21swapper/321:39:323
29805050,0irq/28-eth0-rx-0-21swapper/319:41:313
29805050,0irq/28-eth0-rx-0-21swapper/300:34:553
27150,0ktimersoftd/20-21swapper/219:35:252
249950,0watchdog/23864-21grep23:16:332
249950,0watchdog/20-21swapper/223:21:332
19150,0ktimersoftd/10-21swapper/123:57:331
19150,0ktimersoftd/10-21swapper/123:25:321
19150,0ktimersoftd/10-21swapper/119:35:251
179950,0migration/125683-21kthreadcore21:56:321
179950,0migration/124640-21sh22:32:591
179950,0migration/114909-21sh22:26:331
169950,0watchdog/14374-21timerwakeupswit22:01:401
169950,0watchdog/126635-21tr20:36:321
169950,0watchdog/125270-21head00:46:291
149950,0migration/05655-21irqcore21:46:300
149950,0migration/05215-21latency20:41:320
149950,0migration/030979-21munin-node00:46:410
149950,0migration/025757-21kthreadcore20:56:310
149950,0migration/025696-21kthreadcore22:16:320
149950,0migration/024248-21taskset21:16:460
149950,0migration/024173-21kthreadcore00:06:320
149950,0migration/023580-21irqrtprio00:26:330
149950,0migration/022629-21kthreadcore20:11:300
149950,0migration/022150-21fschecks_count21:56:270
149950,0migration/021916-21kthreadcore23:46:310
149950,0migration/020269-21kthreadcore19:46:310
149950,0migration/019817-21missed_timers20:51:320
149950,0migration/01916-21fschecks_time21:26:280
149950,0migration/017953-21kthreadcore20:06:310
149950,0migration/017807-21munin-node20:31:280
149950,0migration/017766-21kthreadcore22:11:320
149950,0migration/017526-21kthreadcore21:51:310
149950,0migration/017094-21irqrtprio00:41:320
149950,0migration/01521-21munin-node23:36:320
149950,0migration/01269-21kthreadcore19:56:290
149950,0migration/012431-21kthreadcore19:41:310
149950,0migration/011626-21taskset00:17:020
149950,0migration/011105-21kthreadcore00:36:340
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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