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2025-12-23 - 23:52
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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 Dec 23, 2025 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1006299240,2cyclictest23203-21python308:30:020
1007399230,5cyclictest0-21swapper/212:15:242
1007399230,5cyclictest0-21swapper/211:34:302
1006799237,15cyclictest0-21swapper/109:35:411
1006299230,2cyclictest814-21ntpq11:35:230
1006299230,2cyclictest3976-21H222:10:210
1006299222,2cyclictest14158-21perf09:10:000
10062992222,0cyclictest0-21swapper/007:13:490
1006299222,1cyclictest0-21swapper/007:35:020
1006299220,2cyclictest31466-21ls08:40:230
1006299220,21cyclictest192372chrt09:15:220
1006299220,21cyclictest11286-21munin-run09:05:010
1006299220,1cyclictest0-21swapper/012:10:010
10062992114,6cyclictest28277-21ls12:25:160
10062992114,6cyclictest24948-21tr07:35:140
10062992114,6cyclictest0-21swapper/007:55:150
10062992113,7cyclictest19129-21apache207:25:000
10062992112,8cyclictest14012-21/usr/sbin/munin08:10:200
1006299211,19cyclictest22272-21cut12:15:130
1006299210,2cyclictest4738-21cut09:50:130
1006299210,2cyclictest12933-21cpuspeed_turbos10:05:130
1006299210,20cyclictest3989-21H222:10:210
1006299210,20cyclictest14161-21fschecks_time07:15:140
1006299210,20cyclictest0-21swapper/011:18:490
1006299210,1cyclictest0-21swapper/012:00:190
1006299210,1cyclictest0-21swapper/010:50:170
1006299210,1cyclictest0-21swapper/009:45:000
1006299210,16cyclictest32579-21perf12:35:000
1006299210,16cyclictest24473-21cut11:20:190
1006299210,15cyclictest12685-21expr11:00:140
1006299210,15cyclictest0-21swapper/010:35:130
1006299210,15cyclictest0-21swapper/010:00:130
1006299210,15cyclictest0-21swapper/007:45:010
1006299210,14cyclictest0-21swapper/010:20:170
1007399204,15cyclictest0-21swapper/207:26:112
1007399202,17cyclictest0-21swapper/209:11:202
10073992016,3cyclictest0-21swapper/212:14:042
1007399200,5cyclictest399-20systemd-journal11:38:592
1006799203,16cyclictest17088-21cut09:15:011
1006799202,14cyclictest0-21swapper/112:00:581
10067992016,2cyclictest3991-21H222:10:211
10067992014,1cyclictest0-21swapper/108:00:171
10067992012,4cyclictest0-21swapper/110:25:151
10062992015,4cyclictest0-21swapper/011:25:200
10062992013,6cyclictest3023-21cat11:40:140
10062992013,6cyclictest19576-21grep10:15:140
1006299200,2cyclictest3985-21H222:10:210
1006299200,2cyclictest29658-21expr11:30:130
1006299200,1cyclictest0-21swapper/009:30:150
1006299200,1cyclictest0-21swapper/008:55:150
1006299200,19cyclictest25846-21/usr/sbin/munin12:20:160
1006299200,19cyclictest0-21swapper/011:55:150
1006299200,19cyclictest0-21swapper/011:55:140
1006299200,19cyclictest0-21swapper/011:09:000
1006299200,19cyclictest0-21swapper/010:10:210
1006299200,19cyclictest0-21swapper/010:10:210
1006299200,19cyclictest0-21swapper/009:55:200
1006299200,19cyclictest0-21swapper/009:22:000
1006299200,19cyclictest0-21swapper/009:10:150
1006299200,19cyclictest0-21swapper/008:20:170
1006299200,19cyclictest0-21swapper/008:00:150
1006299200,19cyclictest0-21swapper/007:45:150
1006299200,16cyclictest9378-21/usr/sbin/munin10:55:150
1006299200,15cyclictest214062sleep012:12:050
1006299200,14cyclictest0-21swapper/008:31:270
1007399192,15cyclictest24165-21kernelversion11:20:172
1007399190,18cyclictest0-21swapper/212:39:342
1007399190,18cyclictest0-21swapper/208:55:192
1007399190,16cyclictest4035-21H222:10:212
1007399190,16cyclictest3991-21H222:10:212
1007399190,16cyclictest3983-21H222:10:212
1007399190,16cyclictest3983-21H222:10:212
1007399190,16cyclictest0-21swapper/212:00:022
1006799193,15cyclictest0-21swapper/109:09:091
1006799192,16cyclictest0-21swapper/111:06:421
10067991916,2cyclictest3985-21H222:10:211
10067991914,4cyclictest24967-21tr07:35:141
1006799190,16cyclictest3991-21H222:10:211
1006799190,16cyclictest3976-21H222:10:211
1006799190,10cyclictest0-21swapper/108:40:361
10062991914,4cyclictest0-21swapper/010:26:100
10062991914,4cyclictest0-21swapper/008:50:220
10062991914,4cyclictest0-21swapper/008:50:220
10062991913,5cyclictest4185-21cron09:50:000
10062991913,5cyclictest3981-21H222:10:210
10062991913,5cyclictest0-21swapper/011:45:140
10062991913,5cyclictest0-21swapper/008:45:150
10062991912,6cyclictest5574-21trivial-rewrite10:46:300
1006299190,1cyclictest4035-21H222:10:210
1006299190,1cyclictest3976-21H222:10:210
1006299190,18cyclictest0-21swapper/011:50:220
1006299190,14cyclictest0-21swapper/008:05:130
1007399182,16cyclictest0-21swapper/208:46:122
1007399182,15cyclictest0-21swapper/209:55:132
10073991816,1cyclictest25839-21timerwakeupswit08:30:222
10073991816,1cyclictest0-21swapper/208:00:152
10073991815,1cyclictest0-21swapper/207:47:572
10073991814,3cyclictest23226-21pzem_energy10:20:212
10073991814,2cyclictest3983-21H222:10:212
1007399181,2cyclictest3981-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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