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2025-12-26 - 05:54
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Fri Dec 26, 2025 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21130992514,2cyclictest3393-21pzem20:30:221
2113099240,6cyclictest25433-21if_lxdbr000:00:161
21130992315,7cyclictest0-21swapper/100:27:311
2113099220,3cyclictest0-21swapper/121:13:501
2113099220,19cyclictest0-21swapper/123:21:241
2112999220,5cyclictest0-21swapper/019:28:330
2112999213,2cyclictest0-21swapper/022:30:140
2112999210,20cyclictest843-21systemd-network20:18:260
21132992014,3cyclictest0-21swapper/222:15:162
2113099200,19cyclictest3296-21python300:20:011
2113299190,1cyclictest0-21swapper/223:00:192
2113299190,15cyclictest0-21swapper/221:44:582
2113099193,7cyclictest24283-21apt-get21:10:011
2113099193,15cyclictest21435-21mailstats22:55:231
2113099190,1cyclictest0-21swapper/120:10:231
2113099190,18cyclictest843-21systemd-network20:19:591
2112999193,15cyclictest22146-21which19:10:150
2112999193,15cyclictest1855-21cpuspeed_turbos20:30:150
21129991916,2cyclictest29499-21switchtime21:15:250
21132991816,1cyclictest0-21swapper/223:15:152
21132991816,1cyclictest0-21swapper/223:15:152
2113299180,15cyclictest3991-21H222:10:212
2113099188,9cyclictest0-21swapper/120:54:201
2113099185,12cyclictest0-21swapper/119:58:211
2113099182,15cyclictest0-21swapper/121:41:451
21130991815,2cyclictest14502-21bounce00:36:421
2113099181,16cyclictest20289-21grep21:00:191
2113099181,16cyclictest0-21swapper/123:35:181
2113099180,3cyclictest28700-21cpuspeed_turbos20:20:131
2113099180,17cyclictest4764-21head19:35:181
2112999184,0cyclictest1100-21snmpd00:05:540
2112999182,15cyclictest0-21swapper/019:30:130
21129991814,3cyclictest0-21swapper/023:32:450
2112999181,16cyclictest26194-21missed_timers21:10:200
2112999180,16cyclictest1829-21systemd-journal21:05:010
21132991716,1cyclictest28-21ksoftirqd/222:38:212
21132991715,1cyclictest0-21swapper/223:40:182
21132991715,1cyclictest0-21swapper/200:35:192
21132991714,2cyclictest26311-21nfsd421:10:202
21132991714,2cyclictest21921-21cpuspeed_turbos21:05:132
21132991714,2cyclictest20550-21ps23:50:222
21132991714,2cyclictest11697-21awk22:40:122
21132991714,2cyclictest10013-21perf20:45:012
21132991713,3cyclictest3991-21H222:10:212
21132991713,3cyclictest3419-21chrt19:35:122
2113299170,2cyclictest7200-21cut00:25:142
2113299170,2cyclictest32245-21switchtime21:20:212
2113299170,2cyclictest29847-21cron00:10:002
2113299170,2cyclictest25985-21timerwakeupswit19:15:232
2113299170,2cyclictest22792-21latency23:55:162
2113299170,2cyclictest17925-21systemctl20:55:232
2113299170,2cyclictest11241-21pzem_current00:30:192
2113299170,2cyclictest10613-21ntpq19:45:182
2113299170,16cyclictest843-21systemd-network21:35:072
2113299170,16cyclictest3981-21H222:10:212
2113299170,16cyclictest2955-21ls19:35:012
2113299170,16cyclictest28935-21pickup20:27:292
2113299170,16cyclictest28435-21nvmesmart_nvme022:10:192
2113299170,16cyclictest26566-21idleruntime20:15:192
2113299170,16cyclictest22268-21grep22:00:192
2113299170,16cyclictest20351-21postgres21:57:142
2113299170,16cyclictest20351-21postgres21:57:142
2113299170,16cyclictest19763-21fschecks_time21:00:162
2113299170,16cyclictest1829-21systemd-journal00:17:002
2113299170,16cyclictest17567-21nfsd423:45:192
2113299170,16cyclictest1300-21lxd23:20:342
2113299170,16cyclictest0-21swapper/220:00:152
2113299170,15cyclictest3740-21https00:20:012
2113099172,1cyclictest21-21ksoftirqd/121:22:201
21130991715,1cyclictest0-21swapper/100:11:381
21130991714,2cyclictest7665-21cpuspeed_turbos23:30:161
21130991714,2cyclictest7296-21munin-run23:30:021
21130991714,2cyclictest5108-21missed_timers21:30:181
21130991714,2cyclictest4099-21H222:10:211
21130991714,2cyclictest32733-21cpuspeed_turbos22:20:141
21130991714,2cyclictest30168-21expr22:15:151
21130991714,2cyclictest27272-21cat00:05:151
21130991714,2cyclictest19733-21ps21:55:201
21130991714,2cyclictest19733-21ps21:55:201
21130991714,2cyclictest1526-21lxd19:44:481
21130991714,2cyclictest10776-21sshd22:36:451
21130991714,2cyclictest0-21swapper/119:50:151
2113099171,15cyclictest291282sleep119:24:061
2113099171,15cyclictest1485-21snapd21:15:391
2113099171,15cyclictest11376-21chrt19:48:001
2113099170,2cyclictest3979-21H222:10:211
2113099170,2cyclictest381-21wc20:25:211
2113099170,2cyclictest32287-21latency23:15:171
2113099170,2cyclictest32287-21latency23:15:171
2113099170,2cyclictest26319-21fschecks_count23:05:151
2113099170,2cyclictest19081-21apache_accesses23:50:141
2113099170,1cyclictest0-21swapper/122:06:551
2113099170,16cyclictest3976-21H222:10:211
2113099170,16cyclictest3929-21/usr/sbin/munin22:25:161
2113099170,16cyclictest32323-21chrt19:29:021
2113099170,16cyclictest28256-21awk22:10:181
2113099170,16cyclictest17114-21if_eno120:55:181
2113099170,16cyclictest1523-21lxd23:58:341
2113099170,16cyclictest11437-21sed20:45:211
2113099170,16cyclictest1035-21thermald23:00:221
21129991715,1cyclictest9672-21grep22:35:170
21129991715,1cyclictest0-21swapper/023:25:170
21129991714,2cyclictest6707-21apt-config21:35:010
21129991714,2cyclictest5831-21missed_timers20:35:200
21129991714,2cyclictest3414-21master20:02:290
21129991714,2cyclictest31483-21netstat00:10:190
21129991714,2cyclictest31269-21chrt23:15:110
21129991714,2cyclictest31269-21chrt23:15:100
21129991714,2cyclictest18713-21switchtime22:50:230
21129991714,2cyclictest16766-21smtp19:56:430
21129991714,2cyclictest1624-21cut21:25:170
21129991714,2cyclictest13957-21if_enp1s020:50:170
2112999171,2cyclictest29947-21grep22:15:140
2112999170,2cyclictest9089-21/usr/sbin/munin20:40:190
2112999170,2cyclictest3214-21nfsd423:20:180
2112999170,2cyclictest29056-21expr23:10:160
2112999170,2cyclictest27814-21chrt23:07:500
2112999170,2cyclictest18672-21tr21:00:000
2112999170,2cyclictest16347-21awk23:45:120
2112999170,2cyclictest1486-21snapd19:20:090
2112999170,1cyclictest0-21swapper/020:20:210
2112999170,1cyclictest0-21swapper/019:45:170
2112999170,16cyclictest863-21avahi-daemon00:25:210
2112999170,16cyclictest7192-21fschecks_time19:40:160
2112999170,16cyclictest6699-21latency_hist00:25:000
2112999170,16cyclictest5260-21sed19:35:220
2112999170,16cyclictest3879-21/usr/sbin/munin22:25:150
2112999170,16cyclictest31201-21fschecks_count21:20:150
2112999170,16cyclictest21594-21sed22:55:240
2112999170,16cyclictest19490-21grep21:55:180
2112999170,16cyclictest19490-21grep21:55:180
2112999170,16cyclictest1516-21lxd23:02:340
2112999170,16cyclictest14510-21sed21:45:220
2112999170,16cyclictest13078-21grep00:35:170
2112999170,16cyclictest12883-21cut20:50:020
2112999170,16cyclictest10770-21grep21:40:150
2112999170,16cyclictest1035-21thermald00:00:200
2112999170,16cyclictest0-21swapper/023:50:170
21132991614,1cyclictest23842-21gpgv22:05:012
21132991614,1cyclictest18293-21nfsd422:50:202
21132991614,1cyclictest14112-21expr21:45:202
21132991614,1cyclictest0-21swapper/223:25:152
21132991614,1cyclictest0-21swapper/222:55:142
21132991614,1cyclictest0-21swapper/222:20:192
21132991614,1cyclictest0-21swapper/221:30:172
21132991614,1cyclictest0-21swapper/220:20:122
21132991614,1cyclictest0-21swapper/220:05:142
21132991613,2cyclictest32186-21taskset19:27:112
21132991613,2cyclictest25514-21cnf-update-db23:05:012
2113299160,1cyclictest0-21swapper/220:50:122
2113299160,1cyclictest0-21swapper/220:35:202
2113299160,15cyclictest6486-21/usr/sbin/munin19:40:132
2113299160,15cyclictest31802-21/usr/sbin/munin00:10:222
2113299160,15cyclictest26914-21apt19:20:122
2113299160,15cyclictest23585-21expr20:10:152
2113299160,15cyclictest1916-21cpuspeed_turbos20:30:152
2113299160,15cyclictest16677-21munin-plugin-st22:50:002
2113299160,15cyclictest1575-21expr21:25:172
2113299160,15cyclictest11731-21nvmesmart_nvme023:35:192
2113299160,15cyclictest0-21swapper/223:10:002
2113299160,15cyclictest0-21swapper/222:30:142
2113299160,15cyclictest0-21swapper/221:15:162
2113299160,15cyclictest0-21swapper/220:45:192
21130991614,1cyclictest3976-21H222:10:211
21130991614,1cyclictest24409-21cstates19:15:151
21130991614,1cyclictest11104-21ntp_kernel_pll_00:30:171
21130991614,1cyclictest0-21swapper/123:10:201
21130991614,1cyclictest0-21swapper/122:30:141
21130991613,2cyclictest3976-21H222:10:211
2113099160,2cyclictest809-21expr19:30:131
2113099160,2cyclictest2627-21systemctl21:25:241
2113099160,1cyclictest0-21swapper/123:40:181
2113099160,15cyclictest8426-21idleruntime20:40:171
2113099160,15cyclictest11617-21/usr/sbin/munin22:40:131
2113099160,15cyclictest0-21swapper/123:45:151
2113099160,15cyclictest0-21swapper/122:50:151
2113099160,15cyclictest0-21swapper/122:45:001
2113099160,15cyclictest0-21swapper/122:00:141
2113099160,15cyclictest0-21swapper/121:50:141
2113099160,15cyclictest0-21swapper/100:20:151
21129991614,1cyclictest0-21swapper/023:40:130
21129991614,1cyclictest0-21swapper/022:45:180
21129991614,1cyclictest0-21swapper/021:35:140
21129991614,1cyclictest0-21swapper/020:29:030
21129991614,1cyclictest0-21swapper/020:10:150
21129991613,2cyclictest23230-21chrt22:03:580
2112999160,2cyclictest0-21swapper/019:15:190
2112999160,15cyclictest9735-21apt-get00:30:110
2112999160,15cyclictest24590-21ls22:05:150
2112999160,15cyclictest22520-21http_loadtime23:55:150
2112999160,15cyclictest10751-21expr23:35:140
2112999160,15cyclictest0-21swapper/022:40:140
2112999160,15cyclictest0-21swapper/022:20:140
2112999160,15cyclictest0-21swapper/022:10:070
2112999160,15cyclictest0-21swapper/021:55:000
2112999160,15cyclictest0-21swapper/021:00:180
2112999160,15cyclictest0-21swapper/020:05:140
2112999160,15cyclictest0-21swapper/019:50:160
2112999160,15cyclictest0-21swapper/000:18:540
21132991514,1cyclictest0-21swapper/222:25:222
2113299150,15cyclictest0-21swapper/219:50:202
2113299150,0cyclictest0-21swapper/219:57:442
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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