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2026-01-08 - 22:59
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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 Jan 08, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1217399236,16cyclictest0-21swapper/207:40:302
1216799231,2cyclictest20505-21taskset12:19:591
12167992215,6cyclictest53112sleep108:51:271
12167992214,7cyclictest7671-21cut11:00:101
12167992214,2cyclictest9046-21http_loadtime10:00:101
12167992214,2cyclictest7555-21ls10:00:011
12167992214,2cyclictest23707-21/usr/sbin/munin07:30:211
12167992214,2cyclictest18253-21expr07:20:141
12167992214,1cyclictest0-21swapper/112:25:191
12167992213,3cyclictest17779-21munin-plugin-st07:20:001
1216799220,2cyclictest29785-21timerandwakeup09:35:211
1216799220,21cyclictest26629-21grep08:35:131
1216799220,17cyclictest2666-21trivial-rewrite11:47:411
1216799220,17cyclictest25896-21fschecks_count09:30:151
1216799220,16cyclictest15132-21/usr/sbin/munin08:15:121
1216799220,16cyclictest13956-21apache_processe10:10:121
12167992114,2cyclictest15726-21ntpq09:10:181
12167992114,2cyclictest13191-21ls11:10:111
12167992114,1cyclictest0-21swapper/111:35:171
12167992114,1cyclictest0-21swapper/110:50:141
12167992114,1cyclictest0-21swapper/110:48:561
12167992114,1cyclictest0-21swapper/110:35:211
12167992114,1cyclictest0-21swapper/108:40:171
12167992113,2cyclictest31848-21latency_hist07:45:011
12167992113,2cyclictest1592-21ntpq08:45:171
1216799211,2cyclictest21265-21expr10:20:201
1216799210,20cyclictest26643-21cut07:35:111
1216799210,20cyclictest0-21swapper/112:23:391
1216799210,20cyclictest0-21swapper/108:20:161
1216799210,1cyclictest0-21swapper/110:25:181
1216799210,1cyclictest0-21swapper/108:58:451
1216799210,1cyclictest0-21swapper/108:30:191
1216799210,15cyclictest3983-21H222:10:211
1216799210,15cyclictest0-21swapper/111:15:201
1216799210,15cyclictest0-21swapper/109:40:171
1216799210,15cyclictest0-21swapper/109:05:151
1216299210,3cyclictest0-21swapper/011:49:030
1217399203,16cyclictest7906-21cron08:00:012
12173992017,2cyclictest27786-21fschecks_count11:35:152
1217399201,17cyclictest6633-21smtp09:54:312
1216799202,1cyclictest21-21ksoftirqd/112:06:071
1216799202,17cyclictest0-21swapper/111:29:581
12167992014,1cyclictest0-21swapper/112:10:141
12167992014,1cyclictest0-21swapper/112:05:011
12167992014,1cyclictest0-21swapper/110:15:111
12167992014,1cyclictest0-21swapper/108:30:011
12167992013,2cyclictest9664-21awk08:00:211
12167992013,2cyclictest18672-21tr11:20:131
12167992013,1cyclictest0-21swapper/110:05:121
1216799201,15cyclictest14639-21chrt07:13:331
1216799201,15cyclictest14639-21chrt07:13:331
1216799200,2cyclictest3981-21H222:10:211
1216799200,2cyclictest1517-21lxd07:58:411
1216799200,1cyclictest11686-21python308:10:011
1216799200,1cyclictest0-21swapper/107:45:141
1216799200,19cyclictest0-21swapper/109:15:121
1216799200,16cyclictest3991-21H222:10:211
1216799200,15cyclictest0-21swapper/111:40:131
1216799200,15cyclictest0-21swapper/107:25:141
1216299203,16cyclictest32234-21apt-key08:45:010
1217399193,15cyclictest17953-21cut10:15:142
1217399192,16cyclictest3985-21H222:10:212
12173991917,1cyclictest11845-21if_eno110:05:162
12173991917,1cyclictest0-21swapper/212:35:012
1217399191,3cyclictest30086-21perf10:39:592
1217399190,18cyclictest0-21swapper/212:16:352
1217399190,16cyclictest3983-21H222:10:212
1217399190,16cyclictest3979-21H222:10:212
1216799192,16cyclictest10914-21chrt09:03:131
12167991914,1cyclictest0-21swapper/110:30:041
12167991914,1cyclictest0-21swapper/109:30:001
12167991914,1cyclictest0-21swapper/109:25:011
12167991914,1cyclictest0-21swapper/109:25:011
12167991912,2cyclictest4015-21needreboot07:50:171
1216799190,1cyclictest3989-21H222:10:211
1216799190,1cyclictest0-21swapper/111:05:211
1216799190,14cyclictest0-21swapper/111:30:431
1216799190,14cyclictest0-21swapper/111:30:421
1216799190,14cyclictest0-21swapper/109:50:141
12162991917,1cyclictest9-21ksoftirqd/009:43:540
12162991917,1cyclictest3987-21H222:10:210
12162991917,1cyclictest0-21swapper/008:15:030
1216299190,16cyclictest3989-21H222:10:210
1216299190,16cyclictest0-21swapper/009:00:200
12173991816,1cyclictest0-21swapper/207:50:422
12173991815,2cyclictest3991-21H222:10:212
12173991815,2cyclictest3976-21H222:10:212
1217399180,3cyclictest3987-21H222:10:212
1217399180,17cyclictest3989-21H222:10:212
1217399180,17cyclictest0-21swapper/209:25:182
1217399180,17cyclictest0-21swapper/208:20:132
1217399180,16cyclictest3983-21H222:10:212
1217399180,16cyclictest15053-21munin-plugin-st08:15:022
1216799182,2cyclictest7977-21switchtime11:55:201
12167991813,1cyclictest0-21swapper/110:40:181
1216799180,0cyclictest0-21swapper/109:45:031
1216299182,15cyclictest0-21swapper/010:41:270
12162991816,1cyclictest25514-21cat07:30:230
12162991815,2cyclictest3390-21grep10:50:000
1216299181,16cyclictest0-21swapper/007:50:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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