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2025-11-28 - 07:07
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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 Fri Nov 28, 2025 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
378993120,10cyclictest28-21ksoftirqd/219:47:042
376992421,2cyclictest19708-21awk21:35:201
37699230,22cyclictest0-21swapper/100:37:131
375992316,6cyclictest12276-21cat19:30:010
37599230,22cyclictest0-21swapper/023:01:090
37599220,21cyclictest823-21systemd-network19:18:390
376992110,10cyclictest3441-21gsd-color19:50:181
378992018,1cyclictest0-21swapper/222:20:012
376992017,2cyclictest454-21plymouthd21:19:151
376992014,5cyclictest6682-21latency_hist19:20:001
376992014,3cyclictest0-21swapper/120:40:151
37599203,15cyclictest14436-21apt-key20:30:020
375992016,3cyclictest13788-21nfsd419:30:190
37599201,18cyclictest4705-21grep00:00:210
37599200,19cyclictest20054-21needreboot23:30:170
37899193,1cyclictest7764-21expr21:15:132
378991917,1cyclictest0-21swapper/219:40:172
378991914,3cyclictest0-21swapper/221:47:582
378991914,2cyclictest4530-21H212:26:332
37899190,18cyclictest0-21swapper/219:24:292
37699194,1cyclictest0-21swapper/122:23:041
376991917,1cyclictest0-21swapper/123:45:001
376991916,2cyclictest4581-21H212:26:331
376991914,3cyclictest3579-21munin-plugin-st19:15:011
37699190,18cyclictest0-21swapper/121:05:001
37599191,2cyclictest930-21cpuspeed_turbos19:10:150
37599190,1cyclictest0-21swapper/022:04:460
37599190,18cyclictest0-21swapper/021:41:230
37599190,16cyclictest30261-21nvmesmart_nvme022:50:190
37899185,12cyclictest0-21swapper/223:10:232
37899182,15cyclictest28-21ksoftirqd/200:29:342
378991816,1cyclictest0-21swapper/222:00:132
378991815,2cyclictest19261-21vmstat20:35:232
378991815,2cyclictest18708-21cpuspeed_turbos21:35:162
378991814,2cyclictest27131-21https00:40:002
37899180,3cyclictest31917-21https20:05:022
37899180,3cyclictest12452-21munin-run00:15:012
37899180,2cyclictest24003-21cat00:35:012
37899180,17cyclictest24349-21date23:40:012
37899180,17cyclictest16707-21nvmesmart_nvme019:35:212
37899180,16cyclictest0-21swapper/200:08:372
376991816,1cyclictest10852-21cut22:15:181
376991816,1cyclictest0-21swapper/119:45:031
376991814,3cyclictest22597-21nfsd421:40:171
376991814,3cyclictest11491-21ls19:25:221
37699181,2cyclictest31840-21munin-run20:05:011
37699181,16cyclictest12893-21chrt00:15:061
37699180,2cyclictest4523-21H212:26:331
37699180,17cyclictest1072-21fschecks_time22:00:141
37699180,17cyclictest0-21swapper/121:30:231
37699180,15cyclictest14878-21latency_hist19:35:011
37699180,15cyclictest0-21swapper/120:10:021
375991816,1cyclictest9-21ksoftirqd/000:27:300
375991816,1cyclictest25895-21switchtime00:35:210
375991814,3cyclictest25673-21master19:51:140
37599180,17cyclictest0-21swapper/020:05:140
37599180,16cyclictest26987-21nfsd420:50:200
378991715,1cyclictest1314-21cat19:10:152
378991715,1cyclictest0-21swapper/221:28:122
378991714,2cyclictest6073-21taskset00:01:222
378991714,2cyclictest5958-21cron22:10:042
378991714,2cyclictest5773-21nvmesmart_nvme019:15:202
378991714,2cyclictest4776-21lxd21:08:562
378991714,2cyclictest2245-21timerandwakeup23:55:212
378991714,1cyclictest0-21swapper/222:45:232
37899171,15cyclictest13188-21threads20:25:222
37899171,15cyclictest11321-21uname19:25:202
37899170,2cyclictest6057-21python322:10:022
37899170,2cyclictest4532-21H212:26:332
37899170,2cyclictest2341-21cron20:09:002
37899170,2cyclictest15658-21chrt23:23:482
37899170,2cyclictest10877-21grep23:15:132
37899170,1cyclictest0-21swapper/222:59:012
37899170,1cyclictest0-21swapper/222:59:012
37899170,16cyclictest9306-21df20:20:162
37899170,16cyclictest9306-21df20:20:152
37899170,16cyclictest7869-21date23:10:012
37899170,16cyclictest4001-21if_err_eno120:10:172
37899170,16cyclictest22599-21cut21:40:172
37899170,16cyclictest20907-21fschecks_time20:40:152
37899170,16cyclictest20238-21nfsd423:30:182
37899170,16cyclictest17983-21cpuspeed_turbos22:30:142
37899170,16cyclictest16319-21cpuspeed_turbos23:25:142
37899170,16cyclictest15578-21cat22:25:162
37899170,16cyclictest1555-21lxd19:54:562
37899170,16cyclictest13700-21nvmesmart_nvme022:20:192
37899170,16cyclictest12580-21apache_volume19:30:122
37899170,16cyclictest0-21swapper/220:15:212
37699178,0cyclictest0-21swapper/122:05:181
376991715,1cyclictest0-21swapper/120:12:171
376991715,1cyclictest0-21swapper/100:05:191
376991714,2cyclictest6281-21expr20:15:141
376991714,2cyclictest5974-21apt-get22:10:031
376991714,2cyclictest4536-21H212:26:331
376991714,2cyclictest28577-21tr20:55:151
376991714,2cyclictest28054-21sed19:55:211
376991714,2cyclictest27892-21fschecks_count23:45:151
376991714,2cyclictest15476-21sed21:30:001
376991714,2cyclictest13863-21python320:30:011
376991714,2cyclictest11214-21munin-plugin-st20:25:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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