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2026-05-24 - 17:34
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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 50 highest latencies:
System rack1slot2.osadl.org (updated Sun May 24, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2779624637,0sleep20-21swapper/207:21:372
2790124535,0sleep10-21swapper/107:22:481
2772123826,0sleep30-21swapper/307:20:463
2790723624,0sleep00-21swapper/007:22:510
280349976,0cyclictest0-21swapper/110:48:431
29805060,0irq/28-eth0-rx-730-21cut12:43:473
29805060,0irq/28-eth0-rx-31347-21perl11:28:443
29805060,0irq/28-eth0-rx-23236-21taskset11:41:393
29805060,0irq/28-eth0-rx-22847-21df12:38:443
29805060,0irq/28-eth0-rx-17119-21open_files10:58:513
280359960,0cyclictest0-21swapper/210:19:592
149960,0migration/06058-21gltestperf12:28:440
149960,0migration/022648-21sh11:40:010
149960,0migration/020572-21taskset11:20:340
149960,0migration/014939-21sh09:26:440
149960,0migration/01075-21sh10:51:030
4150,0ktimersoftd/00-21swapper/010:45:330
339950,0migration/36678-21kthreadcore09:38:483
339950,0migration/36638-21kthreadcore09:58:463
339950,0migration/36327-21unixbench_singl08:33:553
339950,0migration/35446-21kthreadcore11:48:473
339950,0migration/332078-21kthreadcore11:08:473
339950,0migration/331981-21kthreadcore10:13:463
339950,0migration/331570-21kthreadcore12:23:473
339950,0migration/328552-21kthreadcore07:43:463
339950,0migration/326368-21diskmemload11:04:063
339950,0migration/324464-21fschecks_time10:28:423
339950,0migration/324117-21munin-node09:08:533
339950,0migration/324058-21runrttasks11:43:303
339950,0migration/322329-21kthreadcore07:38:473
339950,0migration/322084-21aten_r1power_vo11:23:413
339950,0migration/321521-21kthreadcore10:43:473
339950,0migration/320680-21kthreadcore11:58:483
339950,0migration/31886-21kthreadcore10:33:473
339950,0migration/315189-21aten_r1power_po10:23:403
339950,0migration/313229-21runrttasks11:18:323
339950,0migration/313221-21kthreadcore10:38:483
339950,0migration/312597-21kthreadcore07:33:463
329950,0watchdog/39531-21python08:13:523
329950,0watchdog/329672-21if_err_eth1.308:53:443
329950,0watchdog/325576-21fschecks_count09:13:443
29815050,0irq/29-eth0-tx-7365-21ssh10:35:382
29815050,0irq/29-eth0-tx-21129-21tr09:28:482
29815050,0irq/29-eth0-tx-2075-21kthreadcore11:28:482
29815050,0irq/29-eth0-tx-0-21swapper/212:43:452
29815050,0irq/29-eth0-tx-0-21swapper/209:25:372
29815050,0irq/29-eth0-tx-0-21swapper/008:28:510
29815050,0irq/29-eth0-tx-0-21swapper/008:13:510
29805050,0irq/28-eth0-rx-8114-21cut10:53:483
29805050,0irq/28-eth0-rx-5772sleep310:49:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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