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2026-06-17 - 07:30
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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 Wed Jun 17, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1367023929,0sleep30-21swapper/319:22:213
1376823423,0sleep00-21swapper/019:23:310
1388422824,0sleep20-21swapper/219:24:492
1368822824,0sleep10-21swapper/119:22:351
14005991515,0cyclictest25996-21sensors21:40:492
339970,0migration/38899-21munin-node22:10:413
339970,0migration/322575-21munin-node22:15:523
339960,0migration/39641-21sh23:45:023
339960,0migration/331974-21sh23:36:183
339960,0migration/327982-21sh22:57:453
339960,0migration/314577-21munin-node23:10:383
339960,0migration/310879-21if_eth1.322:30:433
339960,0migration/310276-21sh21:35:013
29815060,0irq/29-eth0-tx-14223-21munin-node19:25:510
29805060,0irq/28-eth0-rx-8719-21awk00:40:393
29805060,0irq/28-eth0-rx-30748-21if_err_eth100:15:413
27160,0ktimersoftd/20-21swapper/200:28:432
140039966,0cyclictest0-21swapper/023:40:460
140039960,0cyclictest30202-21kthreadcore20:40:430
149960,0migration/024754-21sh00:48:530
149960,0migration/02121-21sh22:43:210
8305050,0irq/26-0000:00:0-21swapper/319:25:413
8305050,0irq/26-0000:00:0-21swapper/222:50:252
339950,0migration/39673-21switchtime22:45:513
339950,0migration/37866-21munin-node20:50:383
339950,0migration/37402-21kthreadcore23:05:443
339950,0migration/37191-21taskset20:50:243
339950,0migration/37106-21munin-node22:25:433
339950,0migration/35506-21taskset22:06:123
339950,0migration/34618-21gltestperf20:25:393
339950,0migration/33312-21kthreadcore23:20:453
339950,0migration/330249-21munin-node23:00:413
339950,0migration/328800-21kthreadcore00:30:443
339950,0migration/328179-21diskmemload00:12:043
339950,0migration/318499-21ntp_kernel_err00:05:453
339950,0migration/31795-21kthreadcore21:45:443
339950,0migration/317317-21sh23:47:163
339950,0migration/316982-21aten_r1power_en00:45:363
339950,0migration/311844-21fschecks_time21:15:363
329950,0watchdog/329513-21cut22:40:443
329950,0watchdog/329030-21port_sshpriv23:15:483
329950,0watchdog/31874-21cut21:05:443
329950,0watchdog/315416-21perl20:55:403
329950,0watchdog/30-21swapper/320:15:433
329950,0watchdog/30-21swapper/300:20:403
29815050,0irq/29-eth0-tx-7857-21munin-node23:25:392
29815050,0irq/29-eth0-tx-31914-21munin-node00:35:432
29815050,0irq/29-eth0-tx-25036-21sensors_temp23:50:472
29815050,0irq/29-eth0-tx-19986-21ssh00:08:172
29815050,0irq/29-eth0-tx-18311-21munin-node22:35:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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