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2025-12-06 - 04:33
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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 rack8slot4.osadl.org (updated Sat Dec 06, 2025 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26090812247189,46sleep40-21swapper/419:06:514
26092952246188,18sleep30-21swapper/319:09:563
26092702238183,17sleep60-21swapper/619:09:356
26092642223170,42sleep10-21swapper/119:09:301
26092882219166,17sleep50-21swapper/519:09:505
26092732219192,17sleep00-21swapper/019:09:370
26090362213185,18sleep20-21swapper/219:06:172
26092612209182,17sleep70-21swapper/719:09:287
260952099320,31cyclictest2776853-21apt-get00:15:557
2609500993225,3cyclictest2730229-21turbostat.cron22:50:002
2609520993128,2cyclictest2650802-21debian-sa120:25:007
260952099312,28cyclictest0-21swapper/720:05:537
260952099311,2cyclictest0-21swapper/721:25:577
260951099310,3cyclictest2735603-21sh23:00:004
2609500993127,3cyclictest0-21swapper/221:30:552
260950099310,28cyclictest0-21swapper/221:50:552
2609510993026,3cyclictest2770993-21sh00:05:014
2609504993028,1cyclictest2698118-21apt-get21:50:553
2609504993028,1cyclictest2635052-21apt-get19:55:543
2609500993026,3cyclictest2648081-21cron20:20:002
2609500993026,1cyclictest2621591-21apt-get19:30:552
260950099300,29cyclictest0-21swapper/200:15:552
260949999300,29cyclictest2749347-21sh23:25:001
2609495993028,1cyclictest2695432-21apt-get21:45:540
2609495993028,1cyclictest2692742-21apt-get21:40:530
260949599300,28cyclictest0-21swapper/000:20:010
2609520992927,1cyclictest0-21swapper/700:00:017
260952099290,28cyclictest0-21swapper/722:45:537
260952099290,28cyclictest0-21swapper/721:15:007
260952099290,1cyclictest0-21swapper/719:35:547
260951699290,28cyclictest2624280-21apt-get19:35:556
2609510992926,2cyclictest3820478-21systemd-journal22:15:004
2609510992926,2cyclictest3820478-21systemd-journal22:15:004
260951099290,28cyclictest0-21swapper/420:00:554
260950499290,28cyclictest0-21swapper/322:50:553
260950499290,28cyclictest0-21swapper/320:25:573
260950499290,1cyclictest2678997-21apt-get21:15:563
260950099290,28cyclictest0-21swapper/222:50:562
2609499992928,1cyclictest2741481-21apt-get23:10:541
2609499992927,1cyclictest0-21swapper/119:50:551
260949999290,28cyclictest0-21swapper/120:25:571
2609495992927,1cyclictest2659378-21sh20:40:000
260949599290,28cyclictest0-21swapper/022:15:000
260949599290,28cyclictest0-21swapper/022:15:000
260949599290,1cyclictest2673610-21apt-get21:05:560
2609520992825,2cyclictest2714057-21turbostat.cron22:20:007
2609520992825,2cyclictest2714057-21turbostat.cron22:20:007
2609520992824,3cyclictest2670417-21cron21:00:007
260951699280,0cyclictest0-21swapper/600:15:556
260951499280,28cyclictest0-21swapper/523:00:005
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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