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2026-07-25 - 20:10
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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 Sat Jul 25, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1138024938,0sleep20-21swapper/207:26:342
1126223127,0sleep10-21swapper/107:25:131
581822723,0sleep30-21swapper/307:23:513
1117022723,0sleep00-21swapper/007:24:080
116229970,0cyclictest593-21date12:43:331
339960,0migration/320015-21sh10:22:213
339960,0migration/315004-21munin-node10:38:503
339960,0migration/313451-21gltestperf11:53:493
29815060,0irq/29-eth0-tx-18869-21munin-node10:04:002
29805060,0irq/28-eth0-rx-7929-21df12:28:493
29805060,0irq/28-eth0-rx-29277-21munin-node10:28:473
29805060,0irq/28-eth0-rx-16496-21ssh11:16:223
259960,0migration/222575-21sh10:59:302
249960,0watchdog/218438-21tail11:18:482
149960,0migration/019743-21cpuspeed_turbos09:03:450
149960,0migration/018037-21sh10:01:570
149960,0migration/011576-21kthreadcore11:13:510
149960,0migration/010718-21sh11:33:360
116219960,0cyclictest0-21swapper/011:48:480
116219960,0cyclictest0-21swapper/010:20:410
116219960,0cyclictest0-21swapper/010:13:540
339950,0migration/3519-21taskset08:24:313
339950,0migration/33600-21kthreadcore09:53:523
339950,0migration/331633-21sh09:33:363
339950,0migration/331072-21kthreadcore07:38:523
339950,0migration/329555-21kthreadcore11:43:493
339950,0migration/327157-21taskset11:42:243
339950,0migration/326688-21taskset09:08:473
339950,0migration/326247-21kthreadcore11:58:543
339950,0migration/325078-21munin-node12:38:503
339950,0migration/324373-21kthreadcore07:58:513
339950,0migration/323326-21munin-node08:43:473
339950,0migration/322836-21taskset12:34:053
339950,0migration/319451-21munin-node12:53:543
339950,0migration/317464-21kthreadcore08:38:523
339950,0migration/312435-21aten_r1power_vo08:58:463
339950,0migration/31033-21kthreadcore12:03:523
329950,0watchdog/318439-21head11:18:483
329950,0watchdog/31838-21perl07:43:483
329950,0watchdog/317180-21cut07:28:523
329950,0watchdog/3150502sleep307:50:563
329950,0watchdog/313378-21munin-node10:53:563
329950,0watchdog/30-21swapper/312:51:253
329950,0watchdog/30-21swapper/310:05:163
29815050,0irq/29-eth0-tx-27932-21ssh11:43:442
29815050,0irq/29-eth0-tx-22759-21sed12:34:002
29815050,0irq/29-eth0-tx-16084-21munin-node09:23:480
29815050,0irq/29-eth0-tx-12285-21munin-node08:58:510
29815050,0irq/29-eth0-tx-11978-21munin-node08:13:560
29815050,0irq/29-eth0-tx-11514-21taskset10:17:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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