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2026-06-06 - 16:42
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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 Jun 06, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1842525341,0sleep10-21swapper/107:22:051
1838924737,0sleep30-21swapper/307:21:433
1839823829,0sleep20-21swapper/207:21:502
1836623228,0sleep00-21swapper/007:21:240
339970,0migration/326628-21sh11:12:273
339960,0migration/38716-21sh11:00:333
339960,0migration/36857-21sh10:41:193
339960,0migration/3340-21sh10:56:453
339960,0migration/318772-21sh12:24:273
29815060,0irq/29-eth0-tx-1430-21munin-node09:04:540
29805060,0irq/28-eth0-rx-30659-21perl11:34:473
29805060,0irq/28-eth0-rx-10708-21grep10:24:523
187119966,0cyclictest0-21swapper/212:19:532
187079963,0cyclictest22947-21kworker/0:112:24:510
187079960,0cyclictest0-21swapper/010:42:270
149960,0migration/03903-21smart_sda11:34:560
149960,0migration/023613-21sh10:50:000
35150,0ktimersoftd/30-21swapper/309:46:513
339950,0migration/39205-21hddtemp_smartct07:39:483
339950,0migration/36595-21kthreadcore11:19:513
339950,0migration/36153-21kthreadcore09:04:513
339950,0migration/331441-21kthreadcore07:54:503
339950,0migration/331336-21kernelversion12:49:503
339950,0migration/330009-21taskset09:22:403
339950,0migration/329197-21kthreadcore08:14:503
339950,0migration/32755-21gltestperf12:14:483
339950,0migration/327035-21kthreadcore10:34:513
339950,0migration/324847-21irqrtprio11:49:493
339950,0migration/324844-21kthreadcore12:24:513
339950,0migration/324806-21aten_r1power_cu09:39:453
339950,0migration/322993-21kthreadcore12:44:513
339950,0migration/322742-21taskset09:17:043
339950,0migration/321961-21fschecks_time10:14:473
339950,0migration/318645-21kthreadcore10:29:523
339950,0migration/314574-21munin-node08:24:543
339950,0migration/31452-21kthreadcore09:24:503
339950,0migration/311392-21sh10:07:113
329950,0watchdog/34689-21aten_r1power_cu07:59:443
329950,0watchdog/315410-21cut10:09:523
329950,0watchdog/31284-21ntpdc09:59:523
29815050,0irq/29-eth0-tx-8241-21munin-node07:40:010
29815050,0irq/29-eth0-tx-4688-21munin-node07:59:530
29815050,0irq/29-eth0-tx-15947-21munin-node09:14:490
29815050,0irq/29-eth0-tx-12523-21munin-node10:09:562
29815050,0irq/29-eth0-tx-0-21swapper/008:52:420
29815050,0irq/29-eth0-tx-0-21swapper/007:34:530
29815050,0irq/29-eth0-tx-0-21swapper/007:30:260
29815050,0irq/29-eth0-tx-0-21swapper/007:27:160
29805050,0irq/28-eth0-rx-8909-21fschecks_count10:44:483
29805050,0irq/28-eth0-rx-880-21latency_hist07:34:333
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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