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2026-04-24 - 11:09
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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 Apr 24, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1312924434,0sleep20-21swapper/219:16:532
1313823926,0sleep10-21swapper/119:17:001
1319623324,0sleep30-21swapper/319:17:383
1338823228,0sleep00-21swapper/019:19:510
339970,0migration/34088-21kthreadcore22:21:183
35160,0ktimersoftd/30-21swapper/321:18:083
339960,0migration/35429-21runrttasks00:32:453
339960,0migration/326862-21sh21:38:363
339960,0migration/326351-21kthreadcore22:16:153
339960,0migration/318211-21sh22:46:453
339960,0migration/317350-21sh21:32:023
339960,0migration/31304-21sh23:53:193
339960,0migration/312111-21sh00:18:203
339960,0migration/310647-21aten_r1power_cu21:11:093
29805060,0irq/28-eth0-rx-5879-21ssh22:03:473
29805060,0irq/28-eth0-rx-17559-21python00:01:233
29805060,0irq/28-eth0-rx-13088-21ntpq22:06:223
29805060,0irq/28-eth0-rx-0-21swapper/322:56:313
29805060,0irq/28-eth0-rx-0-21swapper/300:11:183
149960,0migration/029573-21sh21:58:480
149960,0migration/029510-21sh00:28:520
149960,0migration/028106-21sh21:41:020
149960,0migration/026745-21sh21:38:170
149960,0migration/024214-21timerandwakeup21:16:230
149960,0migration/011935-21sh23:41:170
135559965,0cyclictest5626-21cut20:21:162
135559960,0cyclictest28866-21ssh00:27:032
135559960,0cyclictest24859-21diskmemload23:14:412
135559960,0cyclictest0-21swapper/222:28:202
135549960,0cyclictest24859-21diskmemload23:37:071
135549960,0cyclictest0-21swapper/123:56:581
35150,0ktimersoftd/30-21swapper/323:19:373
339950,0migration/39848-21kthreadcore20:01:153
339950,0migration/36521-21kthreadcore21:46:173
339950,0migration/329648-21irqrtprio19:31:123
339950,0migration/329444-21if_eth020:16:133
339950,0migration/329257-21kthreadcore20:36:173
339950,0migration/327069-21kthreadcore19:51:163
339950,0migration/326906-21kthreadcore21:56:173
339950,0migration/325672-21kthreadcore00:46:193
339950,0migration/321549-21munin-node20:11:103
339950,0migration/321520-21irqrtprio22:51:163
339950,0migration/32044-21kthreadcore19:56:153
339950,0migration/320023-21missed_timers20:51:163
339950,0migration/318354-21fschecks_count22:31:133
339950,0migration/318266-21fschecks_time20:31:123
329950,0watchdog/329606-21munin-node21:01:133
329950,0watchdog/324743-21sh23:47:143
329950,0watchdog/315387-21ntp_states22:26:223
329950,0watchdog/30-21swapper/321:41:133
29815050,0irq/29-eth0-tx-4669-21munin-node21:46:152
29815050,0irq/29-eth0-tx-379-21munin-node23:36:182
29815050,0irq/29-eth0-tx-3524-21snmpd19:43:250
29815050,0irq/29-eth0-tx-3005-21munin-node19:36:210
29815050,0irq/29-eth0-tx-26359-21munin-node23:51:122
29815050,0irq/29-eth0-tx-26095-21ntp_kernel_pll_22:51:192
29815050,0irq/29-eth0-tx-21131-21munin-node20:11:120
29815050,0irq/29-eth0-tx-17889-21munin-node22:31:122
29815050,0irq/29-eth0-tx-13764-21ssh22:06:412
29815050,0irq/29-eth0-tx-11766-21grep00:36:182
29815050,0irq/29-eth0-tx-0-21swapper/223:27:592
29815050,0irq/29-eth0-tx-0-21swapper/223:17:122
29815050,0irq/29-eth0-tx-0-21swapper/222:36:202
29815050,0irq/29-eth0-tx-0-21swapper/222:18:192
29815050,0irq/29-eth0-tx-0-21swapper/222:05:542
29815050,0irq/29-eth0-tx-0-21swapper/221:41:262
29815050,0irq/29-eth0-tx-0-21swapper/021:01:140
29805050,0irq/28-eth0-rx-8900-21kthreadcore00:36:173
29805050,0irq/28-eth0-rx-24570-21df_abs23:31:103
29805050,0irq/28-eth0-rx-22973-21ssh22:13:143
29805050,0irq/28-eth0-rx-19168-21cut21:51:183
29805050,0irq/28-eth0-rx-17489-21kthreadcore00:41:173
29805050,0irq/28-eth0-rx-1329-21cut23:36:133
29805050,0irq/28-eth0-rx-0-21swapper/323:58:453
29805050,0irq/28-eth0-rx-0-21swapper/323:41:173
29805050,0irq/28-eth0-rx-0-21swapper/323:26:163
29805050,0irq/28-eth0-rx-0-21swapper/323:06:113
29805050,0irq/28-eth0-rx-0-21swapper/323:01:163
29805050,0irq/28-eth0-rx-0-21swapper/322:41:083
29805050,0irq/28-eth0-rx-0-21swapper/322:36:163
29805050,0irq/28-eth0-rx-0-21swapper/321:22:113
29805050,0irq/28-eth0-rx-0-21swapper/320:26:153
29805050,0irq/28-eth0-rx-0-21swapper/300:24:293
29805050,0irq/28-eth0-rx-0-21swapper/300:06:573
259950,0migration/26643-21latency_hist00:35:592
259950,0migration/228615-21aten_r1power_fr21:01:092
259950,0migration/228277-21kthreadcore00:46:202
259950,0migration/227030-21sh21:38:592
259950,0migration/225391-21kthreadcore19:26:162
259950,0migration/224943-21cpuspeed_turbos19:51:102
259950,0migration/222986-21kthreadcore00:06:172
259950,0migration/214531-21taskset23:23:372
259950,0migration/214193-21kthreadcore21:31:162
259950,0migration/212452-21idleruntime22:46:152
249950,0watchdog/230579-21kthreadcore21:21:172
249950,0watchdog/20-21swapper/220:06:172
249950,0watchdog/20-21swapper/220:06:172
19150,0ktimersoftd/10-21swapper/123:53:491
19150,0ktimersoftd/10-21swapper/100:45:321
169950,0watchdog/130153-21kthreadcore21:41:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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