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2026-09-19 - 11:20
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Sat Sep 19, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13954999237,40cyclictest26-21ksoftirqd/120:45:191
1254028237,28sleep00-21swapper/019:05:180
13949998040,32cyclictest503-21snmpd22:36:290
13949997640,10cyclictest13942-21cyclictest22:30:270
13949997328,18cyclictest14-21ksoftirqd/019:26:460
13949997239,21cyclictest14-21ksoftirqd/021:45:200
1394999715,56cyclictest26944-21apt-get22:45:130
13949997131,14cyclictest14-21ksoftirqd/023:05:260
13949997128,16cyclictest14-21ksoftirqd/020:40:260
13954997034,30cyclictest26-21ksoftirqd/122:00:221
13954997027,37cyclictest26-21ksoftirqd/122:38:191
1394999705,57cyclictest32142-21apt-get21:30:120
13949997022,19cyclictest503-21snmpd20:19:260
13949997017,18cyclictest29323-21needreboot22:50:270
13954996938,16cyclictest26-21ksoftirqd/121:35:151
1394999693,39cyclictest7523-21ntp_states23:20:320
13949996930,21cyclictest14-21ksoftirqd/020:31:040
13949996930,15cyclictest14-21ksoftirqd/023:50:330
298502680,8sleep1251rcuc/100:25:021
1395499685,14cyclictest26-21ksoftirqd/100:05:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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