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2025-12-18 - 21:19
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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 Thu Dec 18, 2025 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1605299263,18cyclictest0-21swapper/012:00:000
1605499241,15cyclictest0-21swapper/209:00:142
1605499214,3cyclictest0-21swapper/210:22:502
1605499214,16cyclictest0-21swapper/211:46:512
16054992117,3cyclictest0-21swapper/208:44:232
16054992117,3cyclictest0-21swapper/207:58:502
16054992117,2cyclictest2030-21sessionclean08:39:012
1605499210,19cyclictest399-20systemd-journal08:25:002
16052992117,2cyclictest3981-21H222:10:210
1605299210,4cyclictest0-21swapper/010:55:000
16054992016,3cyclictest0-21swapper/212:35:112
16054992016,3cyclictest0-21swapper/210:07:202
16054992014,5cyclictest0-21swapper/211:02:392
16054992014,5cyclictest0-21swapper/211:02:392
1605399203,16cyclictest19205-21cpuspeed_turbos07:15:111
16054991915,3cyclictest0-21swapper/208:51:042
1605499190,16cyclictest3991-21H222:10:212
1605399193,16cyclictest0-21swapper/110:40:591
1605399193,15cyclictest3981-21H222:10:211
1605399192,16cyclictest0-21swapper/110:09:121
16053991916,2cyclictest16802-21ntp_offset08:05:171
16053991915,3cyclictest0-21swapper/109:07:371
1605399191,17cyclictest0-21swapper/109:37:561
1605399190,18cyclictest0-21swapper/109:20:141
1605399190,16cyclictest3981-21H222:10:211
16052991917,1cyclictest0-21swapper/012:16:050
1605299190,18cyclictest0-21swapper/009:04:560
1605499182,1cyclictest1159-21apt-key07:40:012
1605499182,15cyclictest211002chrt07:16:182
16054991816,1cyclictest0-21swapper/209:52:072
16054991815,2cyclictest3983-21H222:10:212
16054991815,2cyclictest3244-21apt11:35:002
16054991814,3cyclictest3351-21lxd10:46:402
16054991814,3cyclictest0-21swapper/211:26:172
1605499181,2cyclictest14384-21timerandwakeup11:50:222
1605499180,3cyclictest4228-21cpuspeed_turbos09:40:132
1605499180,3cyclictest4228-21cpuspeed_turbos09:40:132
1605499180,2cyclictest3981-21H222:10:212
1605499180,2cyclictest3976-21H222:10:212
1605499180,17cyclictest18711-21fschecks_count12:00:152
1605499180,16cyclictest810-21dpkg07:40:012
1605399184,12cyclictest0-21swapper/111:15:151
1605399182,2cyclictest26124-21expr07:25:181
16053991815,2cyclictest2743-21timerwakeupswit11:30:221
16053991813,2cyclictest3989-21H222:10:211
1605399180,3cyclictest7082-21ps08:45:191
1605399180,2cyclictest3991-21H222:10:211
1605399180,17cyclictest3991-21H222:10:211
1605399180,17cyclictest3981-21H222:10:211
1605399180,17cyclictest3981-21H222:10:211
1605399180,17cyclictest3954-21VM22:10:211
1605399180,16cyclictest3991-21H222:10:211
16052991816,1cyclictest3982-21H222:10:210
16052991816,1cyclictest0-21swapper/012:27:340
16052991816,1cyclictest0-21swapper/010:02:420
16052991815,2cyclictest15006-21nfsd410:55:150
16052991815,2cyclictest14313-21switchtime11:50:220
16052991814,3cyclictest3981-21H222:10:210
1605299181,2cyclictest1347-21lxd07:25:570
1605299181,16cyclictest10889-21cat09:50:160
1605299180,3cyclictest1484-21snapd08:12:390
1605299180,17cyclictest3983-21H222:10:210
1605299180,16cyclictest3979-21H222:10:210
16054991715,1cyclictest2970-21cpuspeed_turbos12:30:122
16054991715,1cyclictest28-21ksoftirqd/210:11:582
16054991715,1cyclictest0-21swapper/210:40:172
16054991714,2cyclictest4532-21cstates11:35:142
16054991714,2cyclictest427-21cat12:25:132
16054991714,2cyclictest3989-21H222:10:212
16054991714,2cyclictest3985-21H222:10:212
16054991714,2cyclictest30821-21awk12:20:192
16054991714,2cyclictest2795-21expr10:35:142
16054991714,2cyclictest26097-21nfsd411:15:182
16054991714,2cyclictest19412-21/usr/sbin/munin09:10:222
16054991714,2cyclictest17684-21munin-plugin-st12:00:002
16054991714,2cyclictest14239-21sendmail_mailst08:00:202
1605499171,1cyclictest18122sleep210:32:562
1605499171,15cyclictest137732sleep210:55:062
1605499170,2cyclictest8365-21needreboot07:50:192
1605499170,2cyclictest8084-21kernelversion11:40:182
1605499170,2cyclictest6357-21apt-get09:45:012
1605499170,2cyclictest3991-21H222:10:212
1605499170,2cyclictest20270-21chrt08:10:482
1605499170,2cyclictest11528-21expr08:55:132
1605499170,2cyclictest0-21swapper/207:45:152
1605499170,1cyclictest3983-21H222:10:212
1605499170,16cyclictest5623-21apache_accesses08:45:102
1605499170,16cyclictest30601-21grep10:25:182
1605499170,16cyclictest27747-21kernelversion12:15:182
1605499170,16cyclictest22948-21awk09:15:162
1605499170,16cyclictest22217-21expr07:20:132
1605499170,16cyclictest17250-21ls08:05:202
1605499170,15cyclictest0-21swapper/212:10:192
16053991715,1cyclictest21-21ksoftirqd/110:21:341
16053991715,1cyclictest0-21swapper/112:37:111
16053991715,1cyclictest0-21swapper/112:10:011
16053991714,3cyclictest0-21swapper/112:29:191
16053991714,2cyclictest3987-21H222:10:211
16053991714,2cyclictest3987-21H222:10:211
16053991714,2cyclictest3987-21H222:10:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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