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2026-05-09 - 04:00
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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 100 highest latencies:
System rackdslot4.osadl.org (updated Sat May 09, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
64682204169,23sleep30-21swapper/319:08:313
64682204169,23sleep30-21swapper/319:08:313
64972200166,23sleep20-21swapper/219:08:552
64972200166,23sleep20-21swapper/219:08:542
43632200168,21sleep10-21swapper/119:05:071
43632200168,21sleep10-21swapper/119:05:071
64952197163,22sleep00-21swapper/019:08:530
64952197163,22sleep00-21swapper/019:08:520
2050021680,3sleep0687499cyclictest22:50:240
482321510,4sleep0687499cyclictest20:10:130
6876996912,12cyclictest23768-21grep19:40:262
138491660,1ptp4l401ktimersoftd/320:05:123
687699618,11cyclictest5485-21switchtime23:25:242
6874996126,6cyclictest9-21ksoftirqd/022:30:000
687699609,18cyclictest7725-21cut20:15:172
687699609,11cyclictest20592-21timerandwakeup22:50:252
687699609,11cyclictest16898-21cat20:35:122
687699609,11cyclictest12098-21fschecks_count22:35:152
687699608,12cyclictest15829-21timerwakeupswit21:35:252
687699607,9cyclictest0-21swapper/223:50:172
687699607,9cyclictest0-21swapper/223:50:172
6876996011,16cyclictest29420-21df_abs21:00:142
6876996010,12cyclictest11539-21date21:30:002
687699599,10cyclictest22546-21cat22:55:192
687699598,11cyclictest9551-21if_enp4s023:35:152
687699597,17cyclictest0-21swapper/220:00:222
6874995926,6cyclictest9-21ksoftirqd/000:25:120
6874995924,8cyclictest9-21ksoftirqd/000:00:010
6874995828,4cyclictest9-21ksoftirqd/000:35:200
6874995823,5cyclictest9-21ksoftirqd/021:00:000
687699579,16cyclictest32612-21cut00:20:182
6874995726,4cyclictest9-21ksoftirqd/021:20:010
6874995724,8cyclictest9-21ksoftirqd/019:55:120
687699569,9cyclictest28799-21latency_hist21:00:002
687699569,15cyclictest16947-21chrt19:30:072
687699568,16cyclictest15680-21cat23:45:252
687699568,11cyclictest31630-21/usr/sbin/munin22:10:112
6874995625,5cyclictest9-21ksoftirqd/019:15:000
6874995624,6cyclictest9-21ksoftirqd/021:05:140
6874995622,6cyclictest9-21ksoftirqd/022:05:130
6874995622,6cyclictest9-21ksoftirqd/019:35:130
687699559,8cyclictest15080-21irqstats22:40:172
687699559,10cyclictest23288-21timerandwakeup20:45:252
6874995526,3cyclictest9-21ksoftirqd/000:10:180
6874995522,6cyclictest9-21ksoftirqd/022:30:160
6874995521,5cyclictest9-21ksoftirqd/022:15:220
6874995519,6cyclictest9-21ksoftirqd/000:20:000
6874995518,5cyclictest9-21ksoftirqd/019:20:180
6874995517,5cyclictest9-21ksoftirqd/019:45:200
687699549,8cyclictest30188-21irqstats22:05:182
687699549,17cyclictest555-21cat23:15:252
687699547,9cyclictest17148-21hwlatdetect22:45:142
6874995424,6cyclictest9-21ksoftirqd/021:25:150
6874995423,6cyclictest9-21ksoftirqd/000:35:000
6874995422,6cyclictest9-21ksoftirqd/021:05:000
6874995421,4cyclictest9-21ksoftirqd/021:40:240
687699538,18cyclictest17772-21cat21:40:202
6876995310,8cyclictest5474-21memory20:10:192
6874995322,4cyclictest9-21ksoftirqd/023:50:270
6874995322,4cyclictest9-21ksoftirqd/023:50:270
6874995320,5cyclictest9-21ksoftirqd/023:45:130
6874995319,5cyclictest9-21ksoftirqd/021:45:120
6874995318,5cyclictest9-21ksoftirqd/020:45:250
6874995316,6cyclictest9-21ksoftirqd/023:25:000
687699528,12cyclictest513-21run-parts21:05:232
6874995225,7cyclictest9-21ksoftirqd/023:40:200
6874995225,3cyclictest9-21ksoftirqd/000:00:260
6874995224,3cyclictest9-21ksoftirqd/020:15:200
6874995221,6cyclictest9-21ksoftirqd/023:00:260
6874995221,5cyclictest9-21ksoftirqd/022:45:000
6874995218,8cyclictest9-21ksoftirqd/023:35:210
6874995217,5cyclictest9-21ksoftirqd/020:20:130
6874995215,5cyclictest9-21ksoftirqd/023:25:150
687699518,15cyclictest24024-21/usr/sbin/munin21:55:182
6874995123,7cyclictest9-21ksoftirqd/019:25:210
6874995120,7cyclictest9-21ksoftirqd/022:20:200
6874995119,5cyclictest9-21ksoftirqd/021:35:000
6874995119,5cyclictest9-21ksoftirqd/020:05:200
6874995119,3cyclictest9-21ksoftirqd/020:40:000
6874995118,6cyclictest9-21ksoftirqd/023:15:120
6874995118,4cyclictest9-21ksoftirqd/023:15:000
6874995117,5cyclictest9-21ksoftirqd/000:25:000
6874995116,5cyclictest9-21ksoftirqd/000:05:130
6874995115,5cyclictest9-21ksoftirqd/021:20:010
6874995114,4cyclictest9-21ksoftirqd/022:00:220
687699508,8cyclictest24845-21ps20:50:172
6876995010,8cyclictest4317-21apt00:30:112
6874995023,7cyclictest9-21ksoftirqd/022:35:130
6874995020,9cyclictest9-21ksoftirqd/022:55:180
6874995020,3cyclictest9-21ksoftirqd/021:10:120
6874995019,5cyclictest9-21ksoftirqd/021:35:100
687699499,7cyclictest4778-21if_err_enp4s021:15:172
687699498,8cyclictest1649-21cpuspeed21:10:112
687499491,8cyclictest461-21dbus-daemon20:01:070
6874994918,3cyclictest9-21ksoftirqd/023:30:140
6874994917,5cyclictest9-21ksoftirqd/019:30:130
6874994916,4cyclictest9-21ksoftirqd/020:25:200
6874994912,9cyclictest9-21ksoftirqd/019:40:130
6874994912,5cyclictest9-21ksoftirqd/019:15:200
687699488,15cyclictest26331-21taskset00:09:502
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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