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2026-07-16 - 07:13
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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 50 highest latencies:
System rackdslot1.osadl.org (updated Thu Jul 16, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3085722140,4sleep330855-21hddtemp_smartct19:05:173
161821540,6sleep23276099cyclictest23:50:152
792921380,7sleep13275999cyclictest19:25:171
105302680,5sleep10-21swapper/100:10:001
32758996629,4cyclictest9-21ksoftirqd/022:00:000
32759996529,8cyclictest25-21ksoftirqd/121:15:171
134491650,4ptp4l4187-21irqstats20:25:182
32758996421,10cyclictest9-21ksoftirqd/022:15:280
32759996231,3cyclictest25-21ksoftirqd/121:55:181
32758996233,3cyclictest9-21ksoftirqd/022:45:140
32758996231,3cyclictest9-21ksoftirqd/021:30:010
134491620,4ptp4l0-21swapper/220:55:202
32759996131,3cyclictest25-21ksoftirqd/100:20:251
32759996130,3cyclictest25-21ksoftirqd/100:20:001
32759996124,6cyclictest25-21ksoftirqd/120:25:011
32758996130,4cyclictest9-21ksoftirqd/023:40:260
32758996128,4cyclictest9-21ksoftirqd/022:20:170
32758996120,3cyclictest9-21ksoftirqd/022:10:220
32759996029,4cyclictest25-21ksoftirqd/121:50:191
32759996028,4cyclictest25-21ksoftirqd/120:01:551
32759996027,4cyclictest25-21ksoftirqd/122:45:161
32758996029,3cyclictest9-21ksoftirqd/021:40:180
32758996025,4cyclictest9-21ksoftirqd/023:55:190
32758996023,6cyclictest9-21ksoftirqd/023:15:200
32759995930,7cyclictest25-21ksoftirqd/120:10:131
32759995929,4cyclictest25-21ksoftirqd/122:45:011
32759995928,7cyclictest25-21ksoftirqd/121:29:311
32759995928,3cyclictest25-21ksoftirqd/121:20:171
32758995928,4cyclictest9-21ksoftirqd/019:35:470
32758995927,8cyclictest9-21ksoftirqd/022:45:000
32758995925,4cyclictest9-21ksoftirqd/021:05:270
134491590,5ptp4l0-21swapper/320:10:113
32759995829,4cyclictest25-21ksoftirqd/122:30:011
32759995829,4cyclictest25-21ksoftirqd/122:30:001
32759995826,7cyclictest25-21ksoftirqd/120:55:271
32759995823,7cyclictest25-21ksoftirqd/122:30:191
32759995823,7cyclictest25-21ksoftirqd/122:30:191
32758995828,4cyclictest9-21ksoftirqd/019:15:150
32758995828,3cyclictest9-21ksoftirqd/022:25:130
32758995828,3cyclictest9-21ksoftirqd/022:25:130
134491580,5ptp4l0-21swapper/019:05:160
134491580,4ptp4l0-21swapper/200:05:262
32759995731,3cyclictest25-21ksoftirqd/120:46:441
32759995730,4cyclictest25-21ksoftirqd/120:40:261
32759995730,4cyclictest25-21ksoftirqd/119:30:251
32759995728,3cyclictest25-21ksoftirqd/123:30:131
32759995726,4cyclictest25-21ksoftirqd/121:10:211
32759995723,7cyclictest25-21ksoftirqd/100:10:541
32758995723,4cyclictest9-21ksoftirqd/020:00:270
134491570,5ptp4l0-21swapper/220:35:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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