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2026-07-01 - 18:36
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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 Wed Jul 01, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20505993230,2cyclictest0-21swapper/107:50:051
20509992726,1cyclictest0-21swapper/210:15:162
20505992611,1cyclictest21-21ksoftirqd/109:51:591
2050999244,1cyclictest0-21swapper/208:45:172
2050599230,20cyclictest0-21swapper/108:04:141
2050099230,5cyclictest0-21swapper/010:44:080
20505992220,1cyclictest12416-21cut09:45:181
2050099220,18cyclictest0-21swapper/007:40:190
20505992112,6cyclictest2672-21nfsd408:30:191
2050599210,20cyclictest0-21swapper/108:25:201
2050099213,1cyclictest0-21swapper/009:05:190
2050099210,18cyclictest0-21swapper/010:05:010
2050999204,15cyclictest0-21swapper/210:52:592
20509992017,2cyclictest21662-21timerandwakeup10:00:212
2050999200,16cyclictest4099-21H222:10:212
2050599200,5cyclictest0-21swapper/107:48:121
2050599200,19cyclictest0-21swapper/112:10:131
2050099203,11cyclictest0-21swapper/012:31:130
2050099200,18cyclictest0-21swapper/009:10:370
2050999193,15cyclictest9364-21cut07:45:182
20509991916,2cyclictest766-21proc_pri07:30:182
20509991916,2cyclictest29095-21needreboot08:20:172
20509991914,2cyclictest3979-21H222:10:212
2050999190,2cyclictest3976-21H222:10:212
2050999190,1cyclictest0-21swapper/211:47:372
2050599192,2cyclictest7552-21expr10:35:141
20505991913,5cyclictest21851-21missed_timers07:10:171
2050599190,16cyclictest3985-21H222:10:211
2050599190,16cyclictest3979-21H222:10:211
2050099193,15cyclictest0-21swapper/009:55:160
20500991917,1cyclictest0-21swapper/008:33:120
20500991916,2cyclictest3983-21H222:10:210
20500991914,1cyclictest0-21swapper/008:55:160
2050099190,18cyclictest0-21swapper/009:00:180
2050099190,16cyclictest3991-21H222:10:210
2050099190,16cyclictest3991-21H222:10:210
2050099190,16cyclictest3979-21H222:10:210
2050999182,15cyclictest0-21swapper/208:15:012
20509991816,1cyclictest0-21swapper/212:05:152
20509991815,2cyclictest30375-21timerandwakeup12:10:212
20509991814,3cyclictest3987-21H222:10:212
20509991814,3cyclictest28724-21cron09:16:592
20509991814,3cyclictest11490-21cstates09:45:132
20509991813,3cyclictest3983-21H222:10:212
2050999181,2cyclictest4035-21H222:10:212
2050999180,3cyclictest4550-21grep10:30:142
2050999180,3cyclictest14500-21snapd11:32:582
2050999180,3cyclictest0-21swapper/208:06:562
2050999180,2cyclictest30992-21apache_accesses08:25:122
2050999180,2cyclictest22090-21cron12:00:002
2050999180,2cyclictest16366-21python309:55:002
2050999180,17cyclictest4099-21H222:10:212
2050999180,17cyclictest2007-21systemd-journal10:08:482
2050999180,17cyclictest11147-21cron11:40:002
2050999180,16cyclictest3976-21H222:10:212
2050999180,16cyclictest0-21swapper/208:20:012
2050599182,15cyclictest32597-21cpuspeed_turbos11:20:121
2050599182,15cyclictest32579-21if_err_enp1s007:30:151
20505991816,1cyclictest0-21swapper/107:15:181
20505991815,2cyclictest7174-21nfsd411:30:171
20505991814,3cyclictest1521-21lxd10:52:421
20505991814,3cyclictest12518-21uname11:40:161
2050599181,16cyclictest0-21swapper/110:55:461
2050599180,3cyclictest3989-21H222:10:211
2050599180,2cyclictest4099-21H222:10:211
2050599180,17cyclictest399-20systemd-journal11:16:031
2050599180,17cyclictest3991-21H222:10:211
2050599180,17cyclictest0-21swapper/110:40:171
2050599180,16cyclictest3983-21H222:10:211
20500991815,2cyclictest3620-21grep12:20:180
20500991814,2cyclictest3985-21H222:10:210
2050099180,2cyclictest4099-21H222:10:210
2050099180,2cyclictest3991-21H222:10:210
2050099180,2cyclictest3979-21H222:10:210
2050099180,17cyclictest3991-21H222:10:210
2050099180,17cyclictest0-21swapper/009:20:150
2050099180,16cyclictest3981-21H222:10:210
2050099180,16cyclictest3981-21H222:10:210
20509991716,1cyclictest0-21swapper/212:37:012
20509991715,1cyclictest29759-21cpu11:15:132
20509991715,1cyclictest0-21swapper/212:27:012
20509991715,1cyclictest0-21swapper/211:50:142
20509991714,2cyclictest609-21awk12:15:182
20509991714,2cyclictest3989-21H222:10:212
20509991714,2cyclictest3979-21H222:10:212
20509991714,2cyclictest2196-21sendmail-mta11:21:042
20509991714,2cyclictest10722-21chrt09:43:512
2050999171,2cyclictest24039-21grep09:10:142
2050999171,15cyclictest4035-21H222:10:212
2050999171,15cyclictest0-21swapper/208:30:142
2050999170,2cyclictest3981-21H222:10:212
2050999170,2cyclictest30267-21nfsd407:25:202
2050999170,2cyclictest26874-21df07:20:152
2050999170,2cyclictest24584-21missed_timers07:15:182
2050999170,2cyclictest18324-21nfsd409:55:182
2050999170,2cyclictest12862-21awk11:40:172
2050999170,1cyclictest3976-21H222:10:212
2050999170,16cyclictest7909-21apache_accesses12:30:092
2050999170,16cyclictest6295-21fschecks_time09:35:152
2050999170,16cyclictest3979-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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