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2026-01-02 - 22:53
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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 a total of 3620 SMIs that occured during the measurement.
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 50 highest latencies:
System rack6slot4.osadl.org (updated Fri Jan 02, 2026 13:16:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
"interval":200,6448
"cycles":100000000,6447
"load":"idle",6446
"condition":{6445
"clock":"1100"6443
"family":"x86",6442
"vendor":"Intel",6441
"processor":{6439
"dataset":"2024-01-08T03:36:49+01:00"6437
"origin":"2024-01-08T00:43:22+01:00",6436
"timestamps":{6435
"granularity":"microseconds"6433
"maxima":[6429
"cores":[5221
"latency":{5220
"hostname":"rack6slot4.osadl.org"5218
"system":{5217
"version":"1.0",5214
"format":{5213
"patches":[5204
2912993701,4cyclictest15318-21/usr/sbin/munin0
291599367356,6cyclictest15033-21kworker/1:0+kec_query1
291599367356,6cyclictest15033-21kworker/1:0+kec_query1
291599367355,7cyclictest15033-21kworker/1:0+kec_query1
291599364353,6cyclictest15033-21kworker/1:0+kec_query1
291599363351,7cyclictest16585-21kworker/1:1+kec_query1
2912993631,355cyclictest13360-21/usr/sbin/munin0
291599362351,6cyclictest15033-21kworker/1:0+kec_query1
291599361350,6cyclictest16585-21kworker/1:1+kec_query1
291599361350,6cyclictest15033-21kworker/1:0+kec_query1
291599357346,6cyclictest16585-21kworker/1:1+kec_query1
291299357346,6cyclictest24977-21kworker/0:2+kec_query0
291599356345,6cyclictest15033-21kworker/1:0+kec_query1
291599356344,7cyclictest15033-21kworker/1:0+kec_query1
291599356339,13cyclictest5250irq/9-acpi1
2912993562,7cyclictest26993-21df_inode0
2912993561,348cyclictest24322-21cstates0
2912993561,347cyclictest10495-21sendmail-msp0
2912993561,347cyclictest10495-21sendmail-msp0
291599354343,6cyclictest16585-21kworker/1:1+kec_query1
291599354343,6cyclictest15033-21kworker/1:0+kec_query1
2912993541,346cyclictest21830-21ntpq0
291599353342,6cyclictest15033-21kworker/1:0+kec_query1
2912993531,3cyclictest0-21swapper/00
291599352340,6cyclictest15033-21kworker/1:0+kec_query1
291599352332,15cyclictest16585-21kworker/1:1+kec_query1
2912993522,7cyclictest5384-21users0
291599351343,5cyclictest5250irq/9-acpi1
2912993511,338cyclictest0-21swapper/00
2912993511,11cyclictest15779-21/usr/sbin/munin0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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