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2026-03-25 - 08:15
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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 Wed Mar 25, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3252899246,13cyclictest0-21swapper/019:56:260
3253499220,21cyclictest843-21systemd-network23:04:192
3252899223,11cyclictest0-21swapper/020:56:320
32534992118,2cyclictest9085-21mailstats20:20:222
3253499210,2cyclictest17341-21perf23:30:002
3253499202,15cyclictest0-21swapper/220:35:112
3252899200,17cyclictest0-21swapper/019:45:170
3253499192,16cyclictest0-21swapper/222:44:372
32534991917,1cyclictest0-21swapper/223:55:092
3253499191,2cyclictest20937-21python320:45:012
3253499190,5cyclictest0-21swapper/200:25:002
3253099192,3cyclictest0-21swapper/121:48:391
3253099191,17cyclictest16744-21snapd23:42:591
3252899192,2cyclictest26334-21chrt23:42:070
32528991917,1cyclictest0-21swapper/023:20:000
3253499182,15cyclictest2135-21readlink19:10:212
3253499182,15cyclictest0-21swapper/200:35:002
32534991816,1cyclictest0-21swapper/221:15:172
32534991816,1cyclictest0-21swapper/219:15:052
32534991816,1cyclictest0-21swapper/219:15:052
32534991815,2cyclictest14131-21nfsd420:30:192
32534991813,4cyclictest0-21swapper/222:58:232
3253499181,16cyclictest8736-21cron00:08:592
3253499181,16cyclictest1713-21cpuspeed_turbos22:05:152
3253499181,16cyclictest14459-21python300:20:002
3253499180,4cyclictest0-21swapper/200:14:232
3253499180,17cyclictest27958-21perf21:55:002
32530991814,3cyclictest0-21swapper/122:55:151
3253099181,15cyclictest0-21swapper/121:02:261
3253099180,17cyclictest399-20systemd-journal21:40:011
3253099180,17cyclictest399-20systemd-journal19:35:011
3253099180,17cyclictest1526-21lxd22:32:501
32528991814,3cyclictest0-21swapper/023:52:030
32528991814,3cyclictest0-21swapper/000:05:000
3252899181,16cyclictest3770-21chrt22:05:550
32534991715,1cyclictest29341-21latency21:55:172
32534991715,1cyclictest0-21swapper/222:25:222
32534991715,1cyclictest0-21swapper/221:45:122
32534991715,1cyclictest0-21swapper/220:00:162
32534991714,2cyclictest9714-21smartctl23:15:132
32534991714,2cyclictest9534-21cron22:17:012
32534991714,2cyclictest8276-21vmstat19:20:222
32534991714,2cyclictest6762-21cat23:10:132
32534991714,2cyclictest4830-21grep22:10:152
32534991714,2cyclictest4416-21sort20:15:012
32534991714,2cyclictest3976-21H222:10:212
32534991714,2cyclictest22171-21ls20:45:132
32534991714,2cyclictest20231-21grep21:40:152
32534991714,1cyclictest0-21swapper/221:13:072
32534991713,3cyclictest0-21swapper/219:50:172
3253499171,15cyclictest0-21swapper/219:30:012
3253499170,2cyclictest5605-21python300:05:002
3253499170,2cyclictest3981-21H222:10:212
3253499170,2cyclictest32015-21kernelversion22:00:172
3253499170,2cyclictest28285-21missed_timers20:55:162
3253499170,2cyclictest25560-21pzem_current22:45:202
3253499170,2cyclictest25147-21fschecks_time20:50:152
3253499170,2cyclictest17603-21grep19:40:142
3253499170,2cyclictest15363-21/usr/sbin/munin21:30:162
3253499170,16cyclictest4682-21nfsd423:05:182
3253499170,16cyclictest32307-21basename21:05:002
3253499170,16cyclictest31082-21apache_processe20:05:132
3253499170,16cyclictest28512-21pzem23:45:212
3253499170,16cyclictest27476-21timerwakeupswit19:55:202
3253499170,16cyclictest25752-21cron00:39:002
3253499170,16cyclictest19520-21systemctl00:25:212
3253499170,16cyclictest19520-21systemctl00:25:212
3253499170,16cyclictest19380-21strings23:30:182
3253499170,16cyclictest18157-21sed22:35:012
3253499170,16cyclictest14105-21perf19:35:002
3253499170,16cyclictest12312-21chrt20:27:302
3253499170,16cyclictest0-21swapper/223:20:182
32530991715,1cyclictest16862-21switchtime00:20:211
32530991714,2cyclictest3981-21H222:10:211
32530991714,2cyclictest3593-21sed22:05:231
32530991714,2cyclictest23547-21python323:40:011
32530991714,2cyclictest15259-21cstates23:25:141
32530991714,2cyclictest11802-21egrep19:30:131
32530991714,2cyclictest11464-21cat19:30:011
32530991714,2cyclictest1085-21gdbus22:25:221
3253099171,15cyclictest13269-21nfsd400:15:191
3253099171,14cyclictest0-21swapper/121:29:171
3253099171,14cyclictest0-21swapper/121:29:171
3253099170,2cyclictest7876-21pzem00:05:211
3253099170,2cyclictest7590-21nfsd421:15:181
3253099170,2cyclictest7257-21cut22:15:001
3253099170,2cyclictest3971-21smtp20:11:221
3253099170,2cyclictest28400-21nvmesmart_nvme023:45:191
3253099170,2cyclictest23140-21ntpq20:45:181
3253099170,2cyclictest16060-21pzem_power21:30:201
3253099170,16cyclictest9795-21perf20:25:011
3253099170,16cyclictest5665-21find23:08:591
3253099170,16cyclictest5019-21open_files21:10:191
3253099170,16cyclictest4427-21grep00:00:161
3253099170,16cyclictest28004-21lxd22:54:511
3253099170,16cyclictest23481-21chrt22:43:201
3253099170,16cyclictest20275-21cron23:32:001
3253099170,16cyclictest11589-21/usr/sbin/munin22:20:181
3253099170,16cyclictest11408-21date23:20:001
3253099170,15cyclictest1550-21nvmesmart_nvme023:55:191
32528991715,1cyclictest0-21swapper/023:10:200
32528991715,1cyclictest0-21swapper/023:00:320
32528991715,1cyclictest0-21swapper/019:40:180
32528991714,2cyclictest7875-21expr20:20:140
32528991714,2cyclictest6963-21fschecks_count19:20:140
32528991714,2cyclictest621-21awk22:00:220
32528991714,2cyclictest27520-21expr23:45:130
32528991714,2cyclictest21763-21/usr/sbin/munin20:45:110
32528991714,2cyclictest2074-21/usr/sbin/munin23:55:230
32528991714,2cyclictest1829-21systemd-journal21:11:520
32528991714,2cyclictest16793-21snapd00:05:190
32528991714,2cyclictest16743-21snapd21:20:190
32528991714,2cyclictest15194-21chrt20:34:500
32528991714,2cyclictest14280-21latency_hist19:35:000
32528991714,2cyclictest13563-21nfsd423:20:170
3252899171,1cyclictest22994-21cpuspeed_turbos21:45:140
3252899171,15cyclictest69842sleep020:19:270
3252899171,15cyclictest0-21swapper/023:25:180
3252899170,2cyclictest9884-21expr00:10:150
3252899170,2cyclictest19903-21vmstat00:25:240
3252899170,2cyclictest19903-21vmstat00:25:240
3252899170,2cyclictest18305-21latency_hist22:35:000
3252899170,2cyclictest18283-21grep23:30:130
3252899170,16cyclictest9051-21run-parts22:15:200
3252899170,16cyclictest3976-21H222:10:210
3252899170,16cyclictest25216-21http_loadtime20:50:150
3252899170,16cyclictest21757-21awk23:35:170
3252899170,16cyclictest14967-21cat19:35:150
3252899170,16cyclictest1079-21cups-browsed20:10:230
3252899170,16cyclictest10313-21awk19:25:190
3252899170,15cyclictest3976-21H222:10:210
3252899170,15cyclictest3976-21H222:10:210
32534991614,1cyclictest12472-21grep21:25:152
32534991614,1cyclictest12472-21grep21:25:152
32534991614,1cyclictest0-21swapper/219:46:502
3253499160,15cyclictest5765-21memory20:15:152
3253499160,15cyclictest30143-21expr23:50:122
3253499160,15cyclictest23955-21apt-config23:40:012
3253499160,15cyclictest15819-21nfsd419:35:192
3253499160,15cyclictest0-21swapper/223:35:182
3253499160,15cyclictest0-21swapper/222:50:182
3253499160,15cyclictest0-21swapper/222:20:132
3253499160,15cyclictest0-21swapper/221:35:112
3253499160,15cyclictest0-21swapper/221:20:202
32530991614,1cyclictest461-21cpuspeed_turbos21:05:151
32530991614,1cyclictest3983-21H222:10:211
32530991614,1cyclictest0-21swapper/123:00:181
32530991614,1cyclictest0-21swapper/122:00:131
32530991614,1cyclictest0-21swapper/121:50:181
32530991614,1cyclictest0-21swapper/121:35:131
32530991614,1cyclictest0-21swapper/120:35:151
32530991614,1cyclictest0-21swapper/119:50:141
32530991613,2cyclictest4049-21expr19:15:141
32530991613,2cyclictest4049-21expr19:15:141
32530991613,2cyclictest0-21swapper/100:25:221
32530991613,2cyclictest0-21swapper/100:25:221
32530991613,1cyclictest0-21swapper/119:40:211
3253099160,2cyclictest6311-21cpu23:10:121
3253099160,2cyclictest27215-21apache_accesses20:55:101
3253099160,1cyclictest26433-21python322:50:001
3253099160,1cyclictest12995-21idleruntime23:20:161
3253099160,1cyclictest0-21swapper/122:35:151
3253099160,1cyclictest0-21swapper/121:20:151
3253099160,1cyclictest0-21swapper/120:05:171
3253099160,1cyclictest0-21swapper/119:21:281
3253099160,15cyclictest8917-21proc_pri22:15:191
3253099160,15cyclictest3985-21H222:10:211
3253099160,15cyclictest29096-21basename20:00:161
3253099160,15cyclictest28606-21expr21:55:141
3253099160,15cyclictest16749-21snapd20:27:491
3253099160,15cyclictest16748-21snapd00:12:481
3253099160,15cyclictest0-21swapper/120:50:131
3253099160,15cyclictest0-21swapper/120:30:151
3253099160,15cyclictest0-21swapper/119:55:141
3253099160,15cyclictest0-21swapper/119:45:211
3253099160,15cyclictest0-21swapper/100:35:171
32528991614,1cyclictest30381-21expr21:00:140
32528991614,1cyclictest10424-21cpuspeed_turbos20:25:130
32528991614,1cyclictest0-21swapper/023:05:130
32528991614,1cyclictest0-21swapper/022:55:130
32528991614,1cyclictest0-21swapper/022:24:120
32528991614,1cyclictest0-21swapper/020:35:140
32528991614,1cyclictest0-21swapper/020:05:150
32528991614,1cyclictest0-21swapper/020:00:220
32528991613,2cyclictest23720-21expr00:35:130
32528991613,2cyclictest2064-21sed21:05:240
32528991613,2cyclictest13064-21sed00:15:170
3252899160,2cyclictest18678-21ls22:35:130
3252899160,16cyclictest0-21swapper/021:34:140
3252899160,15cyclictest24636-21entropy22:45:140
3252899160,15cyclictest233652chrt22:41:510
3252899160,15cyclictest227842chrt00:32:280
3252899160,15cyclictest22342-21postgres21:43:200
3252899160,15cyclictest0-21swapper/022:50:150
3252899160,15cyclictest0-21swapper/022:25:220
3252899160,15cyclictest0-21swapper/022:10:200
3252899160,15cyclictest0-21swapper/021:50:210
3252899160,15cyclictest0-21swapper/021:35:160
3252899160,15cyclictest0-21swapper/021:15:150
3252899160,15cyclictest0-21swapper/020:40:150
3252899160,14cyclictest0-21swapper/019:50:130
32530991513,1cyclictest0-21swapper/123:50:131
32530991513,1cyclictest0-21swapper/100:30:181
3252899150,1cyclictest14374-21apt-get00:20:000
3252899150,14cyclictest0-21swapper/021:25:140
3252899150,14cyclictest0-21swapper/021:25:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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