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2026-07-21 - 00:08
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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 Mon Jul 20, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2176699290,5cyclictest0-21swapper/111:19:381
2177199230,22cyclictest0-21swapper/210:35:002
2176699230,22cyclictest10152-21munin-run09:40:011
2176699230,16cyclictest6697-21latency08:35:181
2176699223,15cyclictest25901-21missed_timers07:15:201
21766992214,7cyclictest11474-21interrupts09:40:171
21766992214,6cyclictest21419-21http_loadtime08:05:161
21766992214,6cyclictest21419-21http_loadtime08:05:161
21766992214,3cyclictest29851-21which08:20:161
21766992214,2cyclictest2553-21sed12:15:231
2176699221,15cyclictest22757-21cpuspeed_turbos09:05:141
2176699220,2cyclictest27946-21anvil11:08:191
2176699220,2cyclictest10026-21grep08:40:201
2176699220,21cyclictest28943-21nvmesmart_nvme007:20:181
2176699220,17cyclictest843-21systemd-network07:26:361
2176699220,16cyclictest817-21cpuspeed_turbos07:30:141
2176699220,16cyclictest3240-21grep10:25:151
21761992212,5cyclictest18490-21latency_hist09:55:000
21771992114,2cyclictest20780-21if_lxdbr010:55:172
21766992115,5cyclictest8230-21expr12:25:231
21766992115,5cyclictest8230-21expr12:25:221
21766992114,6cyclictest4124-21expr07:35:121
21766992114,6cyclictest14959-21cat07:55:021
21766992114,3cyclictest24688-21latency_hist07:15:021
21766992114,2cyclictest3709-21qmgr08:27:561
21766992114,1cyclictest0-21swapper/112:39:001
21766992114,1cyclictest0-21swapper/107:40:161
21766992113,2cyclictest23307-21cat11:00:121
21766992113,1cyclictest0-21swapper/111:25:181
21766992113,1cyclictest0-21swapper/109:45:181
2176699211,2cyclictest3983-21H222:10:211
2176699211,1cyclictest113582chrt12:33:021
2176699210,2cyclictest27873-21grep08:15:211
2176699210,20cyclictest20414-21cat09:00:151
2176699210,20cyclictest0-21swapper/112:12:381
2176699210,1cyclictest234882sleep111:56:031
2176699210,1cyclictest11685-21perf07:50:011
2176699210,1cyclictest0-21swapper/111:35:141
2176699210,1cyclictest0-21swapper/109:55:151
2176699210,16cyclictest23944-21latency_hist10:05:011
2176699210,16cyclictest2120-21grep09:25:131
2176699210,15cyclictest0-21swapper/109:11:441
21761992119,1cyclictest12313-21fschecks_count10:40:150
2177199204,15cyclictest0-21swapper/208:38:172
21771992014,3cyclictest0-21swapper/209:29:422
21766992014,5cyclictest24980-21ls10:05:151
21766992014,5cyclictest0-21swapper/111:42:361
21766992014,5cyclictest0-21swapper/110:50:221
21766992014,5cyclictest0-21swapper/110:45:131
21766992014,2cyclictest5186-21awk12:20:181
21766992014,1cyclictest291202chrt12:08:031
21766992014,1cyclictest0-21swapper/109:15:251
21766992013,2cyclictest16969-21ls07:55:221
21766992013,1cyclictest12217-21ls10:40:141
21766992013,1cyclictest0-21swapper/111:20:151
21766992013,1cyclictest0-21swapper/109:54:191
2176699200,1cyclictest0-21swapper/110:10:181
2176699200,19cyclictest0-21swapper/111:45:191
2176699200,19cyclictest0-21swapper/111:10:161
2176699200,19cyclictest0-21swapper/109:31:411
2176699200,14cyclictest0-21swapper/111:50:191
2176699200,14cyclictest0-21swapper/110:30:061
2176699200,14cyclictest0-21swapper/108:10:151
21761992010,6cyclictest0-21swapper/012:40:000
21771991916,2cyclictest17197-21grep11:45:182
21771991916,2cyclictest11013-21python308:45:012
2177199190,1cyclictest0-21swapper/209:10:042
21766991914,1cyclictest0-21swapper/110:55:201
21766991913,0cyclictest0-21swapper/110:20:131
2176699190,15cyclictest2680-21apt-get08:30:131
2176699190,14cyclictest0-21swapper/109:20:171
2176699190,14cyclictest0-21swapper/108:00:221
2176199192,3cyclictest0-21swapper/010:28:430
2176199192,16cyclictest22494-21apt-config11:00:010
21761991914,2cyclictest3989-21H222:10:210
2176199190,18cyclictest0-21swapper/011:41:400
2176199190,16cyclictest4099-21H222:10:210
2176199190,16cyclictest3987-21H222:10:210
2177199182,15cyclictest0-21swapper/208:16:232
21771991816,1cyclictest28-21ksoftirqd/207:10:242
21771991816,1cyclictest0-21swapper/212:18:092
21771991816,1cyclictest0-21swapper/211:05:402
21771991816,1cyclictest0-21swapper/208:48:332
21771991815,2cyclictest7842-21nfsd407:40:182
21771991814,3cyclictest28004-21lxd11:36:442
2177199180,3cyclictest0-21swapper/211:20:152
2177199180,17cyclictest3981-21H222:10:212
2177199180,16cyclictest14402-21latency_hist12:40:012
21766991814,0cyclictest0-21swapper/108:50:121
21766991813,1cyclictest0-21swapper/111:30:171
2176699180,16cyclictest31215-21ntp_kernel_pll_10:15:161
2176699180,0cyclictest0-21swapper/112:00:121
2176199182,15cyclictest0-21swapper/008:22:040
21761991814,3cyclictest7638-21/usr/sbin/munin09:35:160
21761991814,3cyclictest5307-21perf08:35:010
21761991814,3cyclictest0-21swapper/008:05:180
21761991814,3cyclictest0-21swapper/008:05:170
2176199180,17cyclictest399-20systemd-journal11:54:550
2176199180,16cyclictest0-21swapper/011:07:440
2176199180,15cyclictest4035-21H222:10:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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