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2026-04-21 - 01:21
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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 100 highest latencies:
System rack1slot2.osadl.org (updated Tue Apr 21, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2007424839,0sleep30-21swapper/319:17:233
2022424435,0sleep10-21swapper/119:19:091
2000023622,0sleep00-21swapper/019:16:320
2003723523,0sleep20-21swapper/219:16:582
339970,0migration/314540-21munin-node20:00:593
4160,0ktimersoftd/01373-21vmstat00:06:090
339960,0migration/36690-21sh22:19:383
339960,0migration/36453-21sh21:21:373
339960,0migration/36235-21sh23:32:393
339960,0migration/33971-21sh00:26:423
339960,0migration/323040-21sh23:41:183
339960,0migration/321355-21sh23:22:393
339960,0migration/318398-21sh00:00:463
339960,0migration/31839-21sh00:07:243
29815060,0irq/29-eth0-tx-30804-21memory23:46:022
29805060,0irq/28-eth0-rx-835-21python22:51:083
29805060,0irq/28-eth0-rx-31935-21df00:45:573
29805060,0irq/28-eth0-rx-15876-21grep00:16:023
29805060,0irq/28-eth0-rx-14925-21kthreadcore21:06:013
29805060,0irq/28-eth0-rx-0-21swapper/322:28:203
259960,0migration/214064-21sh23:20:492
149960,0migration/07656-21sh23:35:550
149960,0migration/023101-21sh23:41:280
149960,0migration/016188-21sh21:28:460
149960,0migration/011428-21sh23:00:160
8305050,0irq/26-0000:00:0-21swapper/200:10:442
339950,0migration/39482-21munin-node00:11:053
339950,0migration/39452-21kthreadcore22:21:013
339950,0migration/37548-21gltestperf20:41:003
339950,0migration/36217-21kthreadcore21:41:023
339950,0migration/36147-21kthreadcore21:00:593
339950,0migration/331125-21kthreadcore23:11:013
339950,0migration/330881-21kthreadcore20:56:013
339950,0migration/328723-21fschecks_time20:10:573
339950,0migration/328723-21fschecks_time20:10:573
339950,0migration/325683-21kthreadcore20:06:023
339950,0migration/324775-21munin-node22:46:123
339950,0migration/324560-21kthreadcore19:21:023
339950,0migration/322679-21cpuspeed_turbos22:10:563
339950,0migration/320109-21timerandwakeup20:46:093
339950,0migration/318549-21irqcore19:40:593
339950,0migration/316665-21kthreadcore21:46:013
339950,0migration/316433-21timerandwakeup20:21:093
339950,0migration/313716-21latency_hist22:05:433
339950,0migration/31073-21kthreadcore20:36:003
329950,0watchdog/37538-21kthreadcore20:16:023
329950,0watchdog/322629-21cat21:51:033
329950,0watchdog/31621-21python19:26:063
329950,0watchdog/31430-21fschecks_count22:35:593
29815050,0irq/29-eth0-tx-317001diskmemload22:45:132
29815050,0irq/29-eth0-tx-23651-21python21:31:082
29815050,0irq/29-eth0-tx-22750-21munin-node23:26:072
29815050,0irq/29-eth0-tx-2216-21kthreadcore21:21:010
29815050,0irq/29-eth0-tx-20431-21cyclictest22:36:042
29815050,0irq/29-eth0-tx-1955-21ssh22:53:152
29815050,0irq/29-eth0-tx-0-21swapper/223:55:462
29815050,0irq/29-eth0-tx-0-21swapper/223:08:332
29815050,0irq/29-eth0-tx-0-21swapper/222:21:552
29815050,0irq/29-eth0-tx-0-21swapper/222:02:332
29815050,0irq/29-eth0-tx-0-21swapper/221:58:462
29815050,0irq/29-eth0-tx-0-21swapper/200:29:282
29815050,0irq/29-eth0-tx-0-21swapper/020:40:580
29815050,0irq/29-eth0-tx-0-21swapper/019:31:040
29805050,0irq/28-eth0-rx-9710-21iostat_ios21:26:023
29805050,0irq/28-eth0-rx-28827-21ntp_states23:26:053
29805050,0irq/28-eth0-rx-1641-21munin-node23:50:583
29805050,0irq/28-eth0-rx-0-21swapper/323:58:433
29805050,0irq/28-eth0-rx-0-21swapper/323:36:003
29805050,0irq/28-eth0-rx-0-21swapper/323:20:053
29805050,0irq/28-eth0-rx-0-21swapper/322:58:563
29805050,0irq/28-eth0-rx-0-21swapper/322:40:443
29805050,0irq/28-eth0-rx-0-21swapper/322:31:203
29805050,0irq/28-eth0-rx-0-21swapper/321:56:023
29805050,0irq/28-eth0-rx-0-21swapper/321:33:353
29805050,0irq/28-eth0-rx-0-21swapper/300:41:003
29805050,0irq/28-eth0-rx-0-21swapper/300:33:403
29805050,0irq/28-eth0-rx-0-21swapper/300:21:223
259950,0migration/29117-21kthreadcore23:16:012
259950,0migration/24085-21munin-node20:16:012
259950,0migration/24007-21fschecks_count00:10:582
259950,0migration/232405-21kthreadcore20:56:012
259950,0migration/230328-21kthreadcore21:16:022
259950,0migration/224586-21kthreadcore22:11:012
259950,0migration/218804-21sh21:47:462
259950,0migration/215264-21kthreadcore20:01:022
259950,0migration/214062-21cpuspeed_turbos20:45:562
259950,0migration/213306-21if_eth1.300:16:002
259950,0migration/21089-21munin-node23:50:562
259950,0migration/210538-21sh21:43:572
204349955,0cyclictest31700-21diskmemload23:01:152
204349955,0cyclictest0-21swapper/223:43:492
204349955,0cyclictest0-21swapper/222:48:392
204349955,0cyclictest0-21swapper/221:35:482
204349955,0cyclictest0-21swapper/221:06:002
204349950,0cyclictest0-21swapper/222:10:202
204349950,0cyclictest0-21swapper/200:38:322
204349950,0cyclictest0-21swapper/200:30:482
204339955,0cyclictest0-21swapper/122:38:101
204339955,0cyclictest0-21swapper/122:25:141
204339955,0cyclictest0-21swapper/100:49:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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