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2026-07-16 - 18:59
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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 Thu Jul 16, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2708824432,0sleep20-21swapper/207:27:042
2678423725,0sleep10-21swapper/107:23:271
2694123626,0sleep30-21swapper/307:25:173
2694923127,0sleep00-21swapper/007:25:220
272279976,0cyclictest26310-21proc_pri09:53:110
249970,0watchdog/20-21swapper/210:55:362
339960,0migration/34942-21sh10:00:453
339960,0migration/34488-21sh11:09:533
339960,0migration/331580-21sh09:38:293
339960,0migration/327105-21sh10:28:393
339960,0migration/325185-21munin-node10:48:023
339960,0migration/318790-21sh10:25:443
339960,0migration/318069-21sh12:09:053
339960,0migration/313481-21sh12:24:153
339960,0migration/313305-21sh10:03:583
29815060,0irq/29-eth0-tx-9570-21munin-node07:38:150
29805060,0irq/28-eth0-rx-29902-21tune2fs10:33:013
29805060,0irq/28-eth0-rx-26510-21sort09:53:153
29805060,0irq/28-eth0-rx-21653-21cut11:38:063
29805060,0irq/28-eth0-rx-17205-21kthreadcore10:08:053
272299960,0cyclictest0-21swapper/210:10:492
272299960,0cyclictest0-21swapper/209:58:222
272289960,0cyclictest0-21swapper/108:58:001
272279963,0cyclictest0-21swapper/010:07:490
149960,0migration/08426-21kthreadcore11:48:070
149960,0migration/030326-21gltestperf12:18:040
339950,0migration/39028-21munin-node09:03:143
339950,0migration/38660-21kthreadcore11:48:073
339950,0migration/37902-21kthreadcore07:58:063
339950,0migration/37062-21kthreadcore10:53:093
339950,0migration/35601-21taskset11:47:113
339950,0migration/33541-21kthreadcore12:03:053
339950,0migration/33495-21if_eth1.307:33:043
339950,0migration/33472-21kthreadcore10:18:073
339950,0migration/330971-21munin-node11:23:093
339950,0migration/325738-21kthreadcore12:13:073
339950,0migration/325645-21munin-node11:58:033
339950,0migration/32363-21kthreadcore12:53:093
339950,0migration/322889-21needreboot08:28:083
339950,0migration/31988-21runrttasks08:15:083
339950,0migration/318151-21gltestperf09:13:033
339950,0migration/315849-21switchtime07:38:153
339950,0migration/315243-21kthreadcore08:48:053
339950,0migration/31465-21latency_hist12:37:503
339950,0migration/311449-21kthreadcore09:28:063
339950,0migration/31017-21kthreadcore07:53:063
339950,0migration/310057-21kthreadcore08:43:063
329950,0watchdog/35272-21sendmail_mailtr08:38:113
329950,0watchdog/324181-21egrep07:47:593
329950,0watchdog/323415-21ssh11:20:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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