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2026-04-14 - 14:09
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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 rackdslot0.osadl.org (updated Tue Apr 14, 2026 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24306992617,0cyclictest0-21swapper/219:55:162
24306992525,0cyclictest0-21swapper/220:35:172
24306992414,5cyclictest0-21swapper/221:01:432
24306992414,5cyclictest0-21swapper/221:01:432
24305992315,7cyclictest0-21swapper/100:30:181
24305992314,1cyclictest0-21swapper/119:35:171
2430599230,2cyclictest11094-21perf00:29:591
2430599230,16cyclictest30528-21awk21:15:121
2430699220,5cyclictest0-21swapper/221:27:052
24305992214,2cyclictest4067-21awk22:20:161
24305992214,2cyclictest4067-21awk22:20:161
24305992214,1cyclictest97832chrt20:35:351
24305992214,1cyclictest0-21swapper/122:15:581
24305992214,1cyclictest0-21swapper/121:20:201
24305992214,1cyclictest0-21swapper/100:35:191
24305992213,8cyclictest0-21swapper/119:22:501
2430599220,2cyclictest9251-21taskset23:28:011
2430599220,2cyclictest7157-21expr21:30:151
2430599220,2cyclictest16951-21expr22:45:141
2430599220,1cyclictest5396-21ls19:30:241
2430599220,1cyclictest0-21swapper/121:53:471
2430599220,1cyclictest0-21swapper/120:50:161
2430599220,16cyclictest991-21expr19:25:141
2430599220,16cyclictest25946-21cat20:10:001
2430599220,16cyclictest2415-21postgres20:25:131
2430599220,16cyclictest11143-21expr20:40:131
2430599220,15cyclictest24029-21ls22:00:151
2430599220,15cyclictest21709-21http_loadtime21:55:151
2430599220,15cyclictest11928-21irqstats22:35:181
2430599220,15cyclictest0-21swapper/123:55:131
2430599220,15cyclictest0-21swapper/122:50:141
2430599220,15cyclictest0-21swapper/121:05:161
2430599220,15cyclictest0-21swapper/119:55:131
24303992221,1cyclictest9-21ksoftirqd/021:00:180
24303992221,1cyclictest9-21ksoftirqd/021:00:170
2430399220,21cyclictest9-21ksoftirqd/019:54:060
2430699210,20cyclictest843-21systemd-network19:22:452
24305992115,1cyclictest0-21swapper/120:30:201
24305992114,2cyclictest31294-21date20:20:011
24305992114,2cyclictest19835-21awk23:45:201
24305992114,1cyclictest0-21swapper/123:20:161
24305992114,1cyclictest0-21swapper/100:20:011
24305992113,2cyclictest32093-21chrt00:09:511
2430599210,2cyclictest30877-21expr23:10:141
2430599210,2cyclictest21862-21expr23:50:141
2430599210,1cyclictest0-21swapper/123:05:211
2430599210,1cyclictest0-21swapper/121:10:161
2430599210,1cyclictest0-21swapper/120:25:011
2430599210,1cyclictest0-21swapper/120:10:121
2430599210,1cyclictest0-21swapper/119:45:221
2430599210,1cyclictest0-21swapper/100:20:101
2430599210,16cyclictest28937-21turbostat22:10:001
2430599210,16cyclictest26870-21sendmail-mta19:14:351
2430599210,16cyclictest1162-21expr23:15:151
2430599210,15cyclictest16331-21cat23:40:141
2430599210,15cyclictest14497-21expr22:40:131
2430599210,15cyclictest0-21swapper/122:25:211
2430599210,15cyclictest0-21swapper/121:25:221
2430599210,15cyclictest0-21swapper/120:45:141
2430599210,15cyclictest0-21swapper/120:05:011
2430599210,15cyclictest0-21swapper/119:40:151
2430599210,14cyclictest0-21swapper/123:30:181
2430599210,14cyclictest0-21swapper/122:30:171
24306992015,4cyclictest5710-21grep20:30:172
24306992014,5cyclictest0-21swapper/221:20:142
2430699201,18cyclictest12132-21grep23:35:002
24305992014,1cyclictest0-21swapper/123:35:161
24305992014,1cyclictest0-21swapper/123:35:151
24305992014,1cyclictest0-21swapper/100:12:061
24305992013,1cyclictest0-21swapper/119:20:011
24305992013,1cyclictest0-21swapper/119:20:001
2430599200,1cyclictest0-21swapper/121:45:171
2430599200,1cyclictest0-21swapper/121:35:131
2430599200,15cyclictest28859-21chrt00:01:501
2430599200,15cyclictest0-21swapper/120:55:191
2430699192,2cyclictest31312-21cat23:10:162
2430699192,16cyclictest24689-21cat19:10:142
24306991917,1cyclictest26974-21mii-tool20:10:152
24306991915,3cyclictest0-21swapper/223:40:012
24306991914,1cyclictest0-21swapper/220:40:132
2430699191,17cyclictest7368-21nfsd400:20:172
2430699190,18cyclictest0-21swapper/223:05:012
2430699190,17cyclictest13782-21proc_pri19:45:202
24305991913,1cyclictest22094-21/usr/sbin/munin22:55:141
24305991913,1cyclictest0-21swapper/121:45:021
2430599190,1cyclictest0-21swapper/119:53:181
2430399192,1cyclictest9-21ksoftirqd/000:30:010
24303991919,0cyclictest0-21swapper/019:59:400
24303991915,3cyclictest15507-21apt-config23:40:010
24303991915,3cyclictest15507-21apt-config23:40:010
24303991913,5cyclictest0-21swapper/022:50:160
2430699182,1cyclictest297832sleep223:08:412
24306991816,1cyclictest7101-21pzem_power22:25:192
24306991816,1cyclictest19824-21nfsd423:45:192
24306991816,1cyclictest0-21swapper/221:47:312
24306991816,1cyclictest0-21swapper/219:54:232
24306991816,1cyclictest0-21swapper/200:30:002
24306991815,2cyclictest5431-21cat22:25:012
24306991815,2cyclictest5431-21cat22:25:002
24306991815,2cyclictest28482-21chrt19:15:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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