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2026-07-04 - 14:49
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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 Sat Jul 04, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1696999270,22cyclictest3979-21H222:10:210
16972992414,5cyclictest0-21swapper/220:10:132
1696999242,2cyclictest2524-21expr21:35:140
16969992414,8cyclictest1829-21systemd-journal23:09:000
1697299230,5cyclictest0-21swapper/220:46:252
16969992314,8cyclictest5137-21tune2fs22:35:140
16969992314,7cyclictest26616-21tlsmgr21:31:500
16969992314,7cyclictest26616-21tlsmgr21:31:500
1696999230,21cyclictest26800-21kernelversion21:20:160
1696999230,17cyclictest2007-21systemd-journal20:29:590
1697299220,21cyclictest843-21systemd-network23:33:252
16969992214,7cyclictest3989-21H222:10:210
16969992214,7cyclictest31607-21tr23:20:180
16969992214,7cyclictest15223-21switchtime21:55:220
16969992214,7cyclictest15223-21switchtime21:55:220
16969992214,7cyclictest11225-21perf20:55:010
16969992213,1cyclictest0-21swapper/000:20:200
1696999220,2cyclictest14022-21python321:00:010
1696999220,21cyclictest24544-21needreboot00:05:170
1696999220,21cyclictest15375-21df_inode21:00:140
1696999220,16cyclictest1-21systemd22:45:010
1696999220,16cyclictest1-21systemd22:45:010
1696999220,15cyclictest0-21swapper/020:16:190
1696999220,15cyclictest0-21swapper/020:16:190
16972992117,3cyclictest28450-21cut22:20:142
1697299211,19cyclictest27039-21perf23:15:002
16969992114,6cyclictest0-21swapper/000:30:000
16969992114,2cyclictest29780-21perf23:20:010
16969992114,2cyclictest20471-21postgres20:11:500
16969992114,2cyclictest16496-21cpuspeed_turbos22:55:110
16969992114,1cyclictest27850-21apt-get22:20:120
16969992114,1cyclictest0-21swapper/023:30:200
16969992114,1cyclictest0-21swapper/021:25:010
16969992114,1cyclictest0-21swapper/000:11:550
1696999210,3cyclictest14495-21snapd20:23:230
1696999210,2cyclictest3983-21H222:10:210
1696999210,20cyclictest4199-21idleruntime20:40:160
1696999210,20cyclictest4199-21idleruntime20:40:160
1696999210,20cyclictest20858-21expr21:10:160
1696999210,20cyclictest0-21swapper/019:50:170
1696999210,20cyclictest0-21swapper/019:50:170
1696999210,1cyclictest0-21swapper/020:05:020
1696999210,17cyclictest14495-21snapd23:50:240
1696999210,16cyclictest23275-21awk22:10:180
1696999210,16cyclictest0-21swapper/020:39:020
1696999210,15cyclictest32371-21ntp_states22:25:180
1696999210,15cyclictest3058-21rs:main0
1696999210,15cyclictest17774-21sessionclean20:08:590
1696999210,15cyclictest0-21swapper/022:50:170
1697299204,1cyclictest0-21swapper/221:11:312
16972992017,2cyclictest5119-21switchtime20:40:222
16972992017,2cyclictest5119-21switchtime20:40:222
16972992017,2cyclictest12483-21latency_hist20:00:012
1696999202,15cyclictest0-21swapper/022:15:100
16969992014,5cyclictest9698-21apache_accesses23:40:110
16969992014,5cyclictest19198-21awk23:55:160
16969992014,5cyclictest0-21swapper/023:30:000
16969992014,5cyclictest0-21swapper/023:00:110
16969992014,5cyclictest0-21swapper/021:10:010
16969992014,1cyclictest20986-21ls00:00:120
16969992013,2cyclictest28565-21expr19:30:130
16969992012,2cyclictest3989-21H222:10:210
1696999200,2cyclictest12908-21ls23:45:140
1696999200,1cyclictest0-21swapper/022:32:230
1696999200,1cyclictest0-21swapper/021:46:170
1696999200,1cyclictest0-21swapper/021:15:160
1696999200,1cyclictest0-21swapper/020:30:130
1696999200,1cyclictest0-21swapper/019:48:120
1696999200,19cyclictest31077-21grep00:15:210
1696999200,19cyclictest0-21swapper/019:55:200
1696999200,19cyclictest0-21swapper/000:39:000
1696999200,14cyclictest0-21swapper/022:40:160
1697299194,1cyclictest0-21swapper/222:12:582
1697299192,2cyclictest21215-21chrt22:07:582
1697299192,1cyclictest0-21swapper/220:27:332
1697299192,16cyclictest1610-21tr22:30:122
16972991917,1cyclictest3989-21H222:10:212
16972991917,1cyclictest0-21swapper/222:41:502
1697299190,16cyclictest3983-21H222:10:212
1697299190,16cyclictest3983-21H222:10:212
1697299190,16cyclictest3983-21H222:10:212
1697299190,16cyclictest3981-21H222:10:212
1697299190,16cyclictest3976-21H222:10:212
16970991916,2cyclictest5635-21systemctl23:30:191
1697099190,2cyclictest3989-21H222:10:211
1697099190,2cyclictest3989-21H222:10:211
1697099190,18cyclictest0-21swapper/121:54:311
1697099190,17cyclictest3983-21H222:10:211
1697099190,16cyclictest3989-21H222:10:211
1697099190,16cyclictest3981-21H222:10:211
1697099190,16cyclictest3979-21H222:10:211
1696999193,2cyclictest993-21dbus-daemon21:05:230
16969991913,1cyclictest1044-21perf19:40:010
16969991913,1cyclictest0-21swapper/023:10:140
16969991912,2cyclictest26724-21nfsd419:25:170
1696999190,1cyclictest5313-21apt-get00:30:010
1696999190,1cyclictest0-21swapper/021:50:210
1696999190,15cyclictest2219-21fschecks_time19:40:150
1696999190,14cyclictest0-21swapper/019:15:040
1697299182,0cyclictest0-21swapper/221:45:312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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