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2026-05-19 - 14:53
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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 May 19, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
751299253,14cyclictest0-21swapper/019:31:570
7521992314,5cyclictest0-21swapper/223:29:592
751599220,5cyclictest0-21swapper/119:18:451
752199202,1cyclictest0-21swapper/221:54:312
7515992017,2cyclictest11796-21cron00:05:011
7512992017,2cyclictest2638-21mii-tool20:55:160
752199193,15cyclictest28-21ksoftirqd/220:50:172
752199192,1cyclictest0-21swapper/223:45:162
7521991916,2cyclictest22122-21date23:25:022
7521991914,1cyclictest0-21swapper/223:15:172
7521991913,5cyclictest0-21swapper/222:51:092
752199190,5cyclictest0-21swapper/221:18:262
752199190,3cyclictest0-21swapper/221:35:182
752199190,1cyclictest0-21swapper/220:20:362
752199190,18cyclictest1280-21grep19:55:162
752199190,18cyclictest0-21swapper/220:09:392
751599192,16cyclictest0-21swapper/123:42:581
751599192,16cyclictest0-21swapper/100:39:041
751599190,1cyclictest0-21swapper/120:15:161
751299199,5cyclictest0-21swapper/000:40:010
751299192,2cyclictest22048-21tune2fs21:30:140
751299192,2cyclictest12664-21fschecks_count22:10:140
7512991919,0cyclictest0-21swapper/019:15:040
752199182,15cyclictest11652-21missed_timers19:15:192
752199182,15cyclictest0-21swapper/222:05:002
752199182,15cyclictest0-21swapper/219:30:182
7521991816,1cyclictest27834-21ls22:35:212
7521991816,1cyclictest0-21swapper/222:05:132
7521991816,1cyclictest0-21swapper/221:10:142
7521991816,1cyclictest0-21swapper/220:10:192
7521991816,1cyclictest0-21swapper/219:37:352
7521991815,2cyclictest8855-21cat23:00:142
7521991815,2cyclictest6580-21latency_hist23:55:012
7521991815,2cyclictest29433-21expr22:40:122
7521991815,2cyclictest28440-21if_enp1s023:35:142
7521991815,2cyclictest22645-21expr21:30:172
7521991815,2cyclictest18683-21seq21:25:092
7521991814,3cyclictest0-21swapper/223:40:132
7521991814,3cyclictest0-21swapper/220:35:582
752199181,16cyclictest3341-21nvmesmart_nvme020:55:192
752199180,3cyclictest22610-21perf20:35:012
752199180,17cyclictest4389-21grep20:00:142
752199180,17cyclictest3076-21iscsid21:25:012
752199180,17cyclictest0-21swapper/200:25:152
751599182,1cyclictest0-21swapper/122:08:071
751599182,15cyclictest6732-21seq20:05:131
751599182,15cyclictest6027-21needreboot21:00:191
751599182,15cyclictest0-21swapper/123:45:071
751599182,15cyclictest0-21swapper/122:59:571
7515991813,4cyclictest0-21swapper/120:10:421
751599181,16cyclictest28219-21chrt22:37:421
751599181,16cyclictest0-21swapper/123:30:191
7512991816,1cyclictest31255-21chrt22:44:300
7512991815,2cyclictest24667-21nfsd422:30:180
7512991813,5cyclictest0-21swapper/020:35:000
751299181,2cyclictest25728-21if_enp1s023:30:160
751299180,17cyclictest455-21plymouthd20:45:200
752199172,1cyclictest0-21swapper/219:20:132
7521991716,1cyclictest5627-21sendmail-mta22:55:162
7521991714,2cyclictest7869-21cstates21:05:152
7521991714,2cyclictest7253-21sed21:05:002
7521991714,2cyclictest4277-21fschecks_count21:55:142
7521991714,2cyclictest32146-21dpkg22:45:122
7521991714,2cyclictest28665-21grep20:45:142
7521991714,2cyclictest27518-21cstates21:40:122
7521991714,2cyclictest24629-21dpkg19:40:022
7521991714,2cyclictest24629-21dpkg19:40:012
7521991714,2cyclictest19429-21ps00:15:192
7521991714,2cyclictest17766-21dpkg22:20:012
7521991714,2cyclictest15329-21cat22:15:142
7521991714,2cyclictest13020-21awk00:05:162
7521991714,2cyclictest11999-21chrt22:10:052
7521991714,2cyclictest11160-21grep23:05:122
752199170,3cyclictest3978-21H222:10:212
752199170,3cyclictest3978-21H222:10:212
752199170,2cyclictest28074-21expr19:45:152
752199170,2cyclictest20622-21chrt22:25:032
752199170,2cyclictest15644-21cstates00:10:152
752199170,2cyclictest12562-21cstates20:15:132
752199170,16cyclictest8435-21tune2fs19:10:132
752199170,16cyclictest7107-21expr23:55:112
752199170,16cyclictest30312-21cat19:50:142
752199170,16cyclictest29945-21apt-config21:45:002
752199170,16cyclictest29937-21chrt00:35:172
752199170,16cyclictest26504-21df20:40:142
752199170,16cyclictest25406-21cstates23:30:132
752199170,16cyclictest23686-21expr22:30:132
752199170,16cyclictest21751-21cat00:20:172
752199170,16cyclictest17583-21grep20:25:122
752199170,16cyclictest16273-21cstates19:25:142
752199170,16cyclictest10030-21cat00:00:152
752199170,15cyclictest14082-21cpuspeed_turbos23:10:142
751599172,1cyclictest0-21swapper/121:15:051
7515991715,1cyclictest0-21swapper/119:55:141
7515991714,2cyclictest31452-21grep19:50:181
7515991714,2cyclictest31320-21perf22:45:001
7515991714,2cyclictest30170-21find21:45:131
7515991714,2cyclictest28860-21expr20:45:141
7515991714,2cyclictest28245-21munin-run20:45:011
7515991714,2cyclictest25447-21grep19:40:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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