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2026-04-01 - 13:32
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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 Wed Apr 01, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1280523726,0sleep20-21swapper/207:14:382
624923627,0sleep10-21swapper/107:14:131
1307423524,0sleep00-21swapper/007:17:440
1305123228,0sleep30-21swapper/307:17:273
329970,0watchdog/30-21swapper/311:28:423
339960,0migration/3437-21sh09:23:373
339960,0migration/34124-21munin-node09:59:293
339960,0migration/330687-21sh12:44:453
339960,0migration/330435-21unixbench_singl10:14:333
339960,0migration/328396-21sh09:55:063
339960,0migration/326457-21sh09:36:573
339960,0migration/325552-21sh10:33:473
339960,0migration/31889-21sh11:53:543
339960,0migration/317537-21aten_r1power_po11:44:203
339960,0migration/317537-21aten_r1power_po11:44:203
339960,0migration/316146-21munin-node10:09:223
339960,0migration/314312-21sh10:07:403
339960,0migration/313616-21munin-node11:04:213
329960,0watchdog/321010-21irqrtprio12:04:263
29815060,0irq/29-eth0-tx-10188-21munin-node08:24:280
29815060,0irq/29-eth0-tx-0-21swapper/210:14:112
29805060,0irq/28-eth0-rx-17312-21python11:59:323
29805060,0irq/28-eth0-rx-0-21swapper/311:34:043
149960,0migration/023097-21sh11:27:470
149960,0migration/020816-21sh12:22:170
132599960,0cyclictest0-21swapper/212:35:282
132599960,0cyclictest0-21swapper/209:37:472
132599960,0cyclictest0-21swapper/208:24:102
132589960,0cyclictest0-21swapper/109:19:311
132579960,0cyclictest0-21swapper/010:39:070
132579960,0cyclictest0-21swapper/009:39:320
4150,0ktimersoftd/00-21swapper/009:24:240
339950,0migration/39651-21kthreadcore11:19:243
339950,0migration/38278-21kthreadcore07:59:233
339950,0migration/37802-21kthreadcore09:04:263
339950,0migration/37337-21kthreadcore08:19:243
339950,0migration/36280-21kthreadcore11:54:273
339950,0migration/36209-21kthreadcore12:14:253
339950,0migration/35098-21gltestperf09:44:213
339950,0migration/332272-21smart_nvme0n110:34:323
339950,0migration/331521-21kthreadcore08:59:243
339950,0migration/330216-21kthreadcore07:29:243
339950,0migration/329102-21irqrtprio09:39:243
339950,0migration/327988-21smart_nvme0n111:09:303
339950,0migration/322771-21kthreadcore08:54:243
339950,0migration/321901-21kthreadcore08:29:253
339950,0migration/321393-21fschecks_time07:24:203
339950,0migration/320775-21taskset08:53:473
339950,0migration/319919-21munin-node10:49:203
339950,0migration/316848-21taskset07:43:213
339950,0migration/316012-21kthreadcore07:19:253
339950,0migration/314342-21fschecks_time08:04:203
339950,0migration/311540-21kthreadcore10:24:233
329950,0watchdog/332731-21hddtemp_smartct08:39:223
329950,0watchdog/33254-21cut12:29:263
329950,0watchdog/314079-21grep08:24:263
329950,0watchdog/310747-21sensors10:59:303
329950,0watchdog/30-21swapper/311:14:223
29815050,0irq/29-eth0-tx-8232-21ssh11:38:232
29815050,0irq/29-eth0-tx-6495-21munin-node10:04:332
29815050,0irq/29-eth0-tx-571-21ssh11:50:222
29815050,0irq/29-eth0-tx-28270-21ssh09:54:442
29815050,0irq/29-eth0-tx-24564-21munin-node08:34:280
29815050,0irq/29-eth0-tx-23934-21munin-node12:44:222
29815050,0irq/29-eth0-tx-11254-21ssh09:45:242
29815050,0irq/29-eth0-tx-10887-21munin-node10:44:212
29815050,0irq/29-eth0-tx-0-21swapper/211:20:262
29815050,0irq/29-eth0-tx-0-21swapper/211:12:462
29815050,0irq/29-eth0-tx-0-21swapper/008:55:550
29805050,0irq/28-eth0-rx-9500-21ssh10:41:023
29805050,0irq/28-eth0-rx-4054-21ssh12:13:363
29805050,0irq/28-eth0-rx-29587-21sshd12:27:413
29805050,0irq/28-eth0-rx-11927-21munin-node10:44:233
29805050,0irq/28-eth0-rx-0-21swapper/312:42:553
29805050,0irq/28-eth0-rx-0-21swapper/312:34:223
29805050,0irq/28-eth0-rx-0-21swapper/312:20:373
29805050,0irq/28-eth0-rx-0-21swapper/311:43:203
29805050,0irq/28-eth0-rx-0-21swapper/311:34:263
29805050,0irq/28-eth0-rx-0-21swapper/310:54:213
29805050,0irq/28-eth0-rx-0-21swapper/309:29:133
29805050,0irq/28-eth0-rx-0-21swapper/307:46:443
27150,0ktimersoftd/20-21swapper/211:57:092
259950,0migration/224774-21sh10:31:342
249950,0watchdog/225316-21kthreadcore12:24:262
179950,0migration/17433-21kthreadcore10:59:261
179950,0migration/124938-21munin-node11:29:241
179950,0migration/118244-21fschecks_time09:14:201
179950,0migration/117129-21pmu-power11:59:291
179950,0migration/111085-21munin-node09:29:231
169950,0watchdog/14190-21kthreadcore11:34:261
169950,0watchdog/123961-21kthreadcore09:54:261
169950,0watchdog/122401-21ssh10:11:061
169950,0watchdog/10-21swapper/112:24:261
149950,0migration/0988-21kthreadcore08:59:250
149950,0migration/09368-21timerwakeupswit08:19:310
149950,0migration/08916-21timerwakeupswit11:54:340
149950,0migration/08630-21latency_hist10:24:070
149950,0migration/07394-21kthreadcore09:44:240
149950,0migration/07097-21fschecks_count10:04:210
149950,0migration/032529-21kthreadcore07:29:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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