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2026-07-25 - 14:53
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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 highest latencies:
System rackdslot0.osadl.org (updated Sat Jul 25, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31936992914,1cyclictest0-21swapper/121:05:121
3193699230,5cyclictest0-21swapper/120:10:141
3193499230,5cyclictest6614-21sed23:10:000
3193999220,17cyclictest0-21swapper/220:36:272
3193999220,17cyclictest0-21swapper/220:36:272
3193699220,4cyclictest0-21swapper/119:53:171
3193499224,15cyclictest0-21swapper/020:45:140
31939992114,3cyclictest0-21swapper/220:30:142
3193699214,1cyclictest0-21swapper/119:30:211
3193699210,17cyclictest0-21swapper/120:50:011
3193999204,15cyclictest0-21swapper/220:54:212
3193999203,16cyclictest0-21swapper/219:22:502
3193699203,3cyclictest0-21swapper/119:46:111
3193699203,3cyclictest0-21swapper/100:06:181
3193699202,17cyclictest0-21swapper/100:01:121
31936992018,1cyclictest0-21swapper/119:55:141
3193699200,18cyclictest399-20systemd-journal20:31:441
31934992016,3cyclictest0-21swapper/023:57:520
31939991916,2cyclictest24086-21cat22:40:232
3193999190,16cyclictest3989-21H222:10:212
3193699193,15cyclictest0-21swapper/123:14:281
3193699192,1cyclictest0-21swapper/122:54:021
31936991916,2cyclictest2069-21systemd-udevd19:12:511
3193699190,18cyclictest399-20systemd-journal21:25:001
3193499193,15cyclictest0-21swapper/020:56:420
3193499193,11cyclictest14447-21munin-run21:30:010
3193499192,16cyclictest0-21swapper/020:17:030
31934991916,2cyclictest29575-21latency20:00:170
3193499190,3cyclictest20843-21apt-config23:35:000
3193999182,2cyclictest2886-21iscsid23:35:002
3193999182,15cyclictest84862chrt00:07:432
3193999182,15cyclictest10928-21sed22:20:012
3193999182,15cyclictest10928-21sed22:20:002
3193999182,15cyclictest0-21swapper/219:35:002
31939991816,1cyclictest28-21ksoftirqd/200:25:192
31939991816,1cyclictest16421-21switchtime19:35:212
31939991816,1cyclictest0-21swapper/221:58:522
31939991814,3cyclictest3989-21H222:10:212
31939991814,3cyclictest0-21swapper/222:31:432
3193999181,2cyclictest8805-21sed21:20:012
3193999181,2cyclictest6696-21nfsd422:10:182
3193999180,2cyclictest3976-21H222:10:212
3193999180,2cyclictest1856-21systemd-udevd21:50:522
3193999180,17cyclictest3987-21H222:10:212
3193999180,16cyclictest0-21swapper/219:16:322
3193699189,0cyclictest0-21swapper/123:35:021
3193699182,1cyclictest0-21swapper/121:35:131
3193699182,15cyclictest19708-21expr22:35:111
3193699180,3cyclictest5245-21tr20:15:151
3193699180,2cyclictest3976-21H222:10:211
3193699180,17cyclictest13352-21anvil22:22:281
3193699180,16cyclictest15798-21ls23:25:121
31934991815,2cyclictest3976-21H222:10:210
3193499181,1cyclictest0-21swapper/023:03:420
3193499181,16cyclictest32722-21expr21:05:120
3193499180,3cyclictest3983-21H222:10:210
3193499180,2cyclictest3989-21H222:10:210
3193999172,14cyclictest0-21swapper/222:27:302
31939991715,1cyclictest115092sleep219:29:192
31939991715,1cyclictest0-21swapper/200:30:212
31939991714,2cyclictest8310-21nvmesmart_nvme023:10:192
31939991714,2cyclictest3983-21H222:10:212
31939991714,2cyclictest3981-21H222:10:212
31939991714,2cyclictest3818-21/usr/sbin/munin22:05:192
31939991714,2cyclictest27565-21switchtime19:55:212
31939991714,2cyclictest23344-21timerandwakeup20:45:192
31939991714,2cyclictest12608-21chrt20:27:422
3193999170,3cyclictest0-21swapper/223:50:192
3193999170,2cyclictest3989-21H222:10:212
3193999170,2cyclictest30646-21expr22:55:142
3193999170,2cyclictest25443-21needreboot23:40:182
3193999170,2cyclictest18851-21apache_processe20:40:112
3193999170,2cyclictest1756-21if_eno123:00:152
3193999170,1cyclictest3981-21H222:10:212
3193999170,16cyclictest9242-21gpg-connect-age21:20:002
3193999170,16cyclictest3976-21H222:10:212
3193999170,16cyclictest3707-21master00:11:352
3193999170,16cyclictest31093-21awk21:00:202
3193999170,16cyclictest30925-21seq20:04:572
3193999170,16cyclictest27931-21/usr/sbin/munin23:45:162
3193999170,16cyclictest25954-21latency_hist21:50:012
3193999170,16cyclictest2069-21systemd-udevd21:38:522
3193999170,16cyclictest1854-21munin-plugin-st20:10:012
3193999170,16cyclictest17728-21latency_hist21:35:012
3193999170,16cyclictest14170-21ntp_kernel_pll_23:20:172
3193999170,16cyclictest1365-21nfsd423:55:172
3193999170,16cyclictest12457-21netstat22:20:182
3193999170,16cyclictest12023-21apache_accesses21:25:122
3193999170,16cyclictest0-21swapper/223:25:172
3193999170,15cyclictest3983-21H222:10:212
3193699172,15cyclictest21-21ksoftirqd/100:32:201
31936991715,1cyclictest29647-21latency20:00:161
31936991714,2cyclictest3985-21H222:10:211
31936991714,2cyclictest0-21swapper/121:10:121
31936991714,1cyclictest0-21swapper/123:31:041
3193699171,15cyclictest5130-21cat22:10:001
3193699171,15cyclictest0-21swapper/120:25:201
3193699170,2cyclictest9349-21grep22:15:181
3193699170,2cyclictest9349-21grep22:15:171
3193699170,2cyclictest870-21systemd-logind20:50:201
3193699170,2cyclictest3987-21H222:10:211
3193699170,2cyclictest3702-21/usr/sbin/munin19:15:121
3193699170,2cyclictest3059-21chrt23:01:021
3193699170,2cyclictest29155-21chrt20:57:441
3193699170,2cyclictest22930-21df22:40:151
3193699170,2cyclictest22167-21ntpq21:40:171
3193699170,2cyclictest18438-21perf20:40:011
3193699170,2cyclictest18438-21perf20:40:001
3193699170,2cyclictest18400-21basename19:40:141
3193699170,2cyclictest11250-21grep00:10:221
3193699170,17cyclictest0-21swapper/121:30:191
3193699170,16cyclictest7916-21munin-plugin-st22:15:011
3193699170,16cyclictest7315-21cut21:15:171
3193699170,16cyclictest4099-21H222:10:211
3193699170,16cyclictest3987-21H222:10:211
3193699170,16cyclictest3983-21H222:10:211
3193699170,16cyclictest30024-21ls21:00:161
3193699170,16cyclictest29218-21grep21:55:141
3193699170,16cyclictest26597-21cron23:45:001
3193699170,16cyclictest20436-21sendmail_mailtr20:40:201
3193699170,16cyclictest17238-21latency_hist00:24:591
3193699170,16cyclictest10754-21proc_pri21:20:201
3193699170,16cyclictest10181-21cat20:25:001
3193699170,0cyclictest0-21swapper/123:50:201
31934991715,1cyclictest3284-21nfsd420:10:180
31934991714,2cyclictest9430-21cpuspeed_turbos21:20:140
31934991714,2cyclictest3983-21H222:10:210
31934991714,2cyclictest2974-21date22:05:150
31934991714,2cyclictest1541-21grep19:10:180
31934991714,2cyclictest15073-21expr19:35:140
31934991714,1cyclictest0-21swapper/022:55:140
3193499171,0cyclictest0-21swapper/023:50:000
3193499170,2cyclictest3989-21H222:10:210
3193499170,2cyclictest3976-21H222:10:210
3193499170,2cyclictest30875-21cat21:00:200
3193499170,2cyclictest24438-21cut21:45:160
3193499170,2cyclictest20350-21cron21:40:020
3193499170,2cyclictest10973-21dpkg22:20:000
3193499170,1cyclictest3981-21H222:10:210
3193499170,1cyclictest0-21swapper/023:11:140
3193499170,16cyclictest8430-21fschecks_time20:20:140
3193499170,16cyclictest4035-21H222:10:210
3193499170,16cyclictest399-20systemd-journal00:14:550
3193499170,16cyclictest3985-21H222:10:210
3193499170,16cyclictest3981-21H222:10:210
3193499170,16cyclictest24349-21grep19:50:170
3193499170,16cyclictest22622-21awk23:35:160
3193499170,16cyclictest20058-21nfsd420:40:170
3193499170,16cyclictest18170-21cat19:40:120
3193499170,16cyclictest18045-21master20:37:220
3193499170,16cyclictest18045-21master20:37:210
3193499170,16cyclictest14495-21snapd20:30:210
3193499170,16cyclictest14331-21apt-get21:30:020
3193499170,15cyclictest4099-21H222:10:210
31939991614,1cyclictest27010-21/usr/sbin/munin20:55:132
31939991614,1cyclictest0-21swapper/221:05:202
31939991614,1cyclictest0-21swapper/219:50:202
31939991614,1cyclictest0-21swapper/219:45:142
31939991614,1cyclictest0-21swapper/219:10:162
31939991613,2cyclictest5016-21cpu20:15:142
3193999160,2cyclictest17634-21/usr/sbin/munin19:40:162
3193999160,2cyclictest12099-21apache_accesses00:15:102
3193999160,1cyclictest1-21systemd22:00:162
3193999160,15cyclictest3677-21cat21:10:142
3193999160,15cyclictest0-21swapper/221:40:172
3193999160,15cyclictest0-21swapper/220:10:162
31936991614,1cyclictest10288-21sed19:25:171
31936991614,1cyclictest0-21swapper/123:05:031
31936991614,1cyclictest0-21swapper/122:30:161
31936991614,1cyclictest0-21swapper/121:50:181
3193699160,2cyclictest32264-21cat22:00:141
3193699160,2cyclictest1690-21cut23:55:201
3193699160,1cyclictest13950-21/usr/sbin/munin22:25:111
3193699160,15cyclictest4035-21H222:10:211
3193699160,15cyclictest32343-21sed20:05:161
3193699160,15cyclictest0-21swapper/121:45:121
3193699160,15cyclictest0-21swapper/119:35:151
3193699160,15cyclictest0-21swapper/100:35:151
31934991614,1cyclictest3450-21gsd-color19:15:170
31934991614,1cyclictest0-21swapper/023:50:140
31934991614,1cyclictest0-21swapper/023:25:130
31934991614,1cyclictest0-21swapper/021:51:330
31934991614,1cyclictest0-21swapper/021:10:190
31934991614,1cyclictest0-21swapper/020:05:150
31934991614,1cyclictest0-21swapper/019:20:120
31934991613,2cyclictest31537-21date22:00:010
3193499160,1cyclictest3976-21H222:10:210
3193499160,1cyclictest27518-21swap19:55:220
3193499160,15cyclictest9274-21dpkg19:25:140
3193499160,15cyclictest6677-21ls21:15:120
3193499160,15cyclictest661-21ntpq22:00:180
3193499160,15cyclictest4770-21pzem00:00:210
3193499160,15cyclictest4035-21H222:10:210
3193499160,15cyclictest3988-21H222:10:210
3193499160,15cyclictest3981-21H222:10:210
3193499160,15cyclictest10601-21expr20:25:110
3193499160,15cyclictest0-21swapper/023:40:120
3193499160,15cyclictest0-21swapper/023:20:140
3193499160,15cyclictest0-21swapper/022:50:150
3193499160,15cyclictest0-21swapper/022:30:110
3193499160,15cyclictest0-21swapper/022:15:140
3193499160,15cyclictest0-21swapper/022:15:140
3193499160,15cyclictest0-21swapper/019:45:140
31936991513,1cyclictest0-21swapper/119:20:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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