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2026-07-01 - 19:16
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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
Characteristics of the 20 highest latencies:
System rackdslot2.osadl.org (updated Wed Jul 01, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
110012214169,33sleep30-21swapper/307:06:053
113012208175,21sleep20-21swapper/207:09:552
91812205172,21sleep00-21swapper/007:05:110
109612204170,23sleep10-21swapper/107:05:351
2172221700,7sleep21160399cyclictest07:30:152
1160399631,60cyclictest21631-21kworker/2:108:50:252
139291610,1ptp4l401ktimersoftd/310:50:043
1160199606,10cyclictest0-21swapper/009:20:210
1160199589,10cyclictest5149-21/usr/sbin/munin10:20:190
1160199587,16cyclictest13829-21grep08:20:240
1160199587,11cyclictest17652-21date09:35:260
1160199567,15cyclictest18579-21/usr/sbin/munin11:55:160
87742550,3sleep38776-21date09:20:003
1160199529,14cyclictest21397-21hddtemp_smartct09:45:160
1160199526,11cyclictest4303-21timerandwakeup10:15:250
1160199526,11cyclictest20769-21missed_timers08:35:210
1160199516,13cyclictest22128-21apt-get08:40:120
1160199508,7cyclictest28685-21diskstats07:45:140
1160199507,8cyclictest27236-21df_inode08:50:150
1160399492,45cyclictest13548-21kworker/2:207:35:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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