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2026-09-20 - 08:11
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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 Sun Sep 20, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
451992610,1cyclictest0-21swapper/221:35:142
451992523,1cyclictest0-21swapper/221:35:002
44699240,23cyclictest31823-21perf20:05:011
451992220,1cyclictest0-21swapper/220:10:172
44699220,18cyclictest0-21swapper/122:15:121
44299220,21cyclictest870-21systemd-logind19:36:520
44699214,16cyclictest19290-21perf20:40:001
44699214,16cyclictest0-21swapper/121:39:231
446992114,3cyclictest0-21swapper/120:55:161
44299214,1cyclictest3991-21H222:10:210
451992017,2cyclictest7485-21switchtime20:15:212
45199200,5cyclictest399-20systemd-journal20:24:552
446992017,2cyclictest15524-21missed_timers22:25:171
44699200,5cyclictest0-21swapper/119:45:181
44699200,18cyclictest0-21swapper/121:41:241
45199192,2cyclictest12399-21cpuspeed_turbos00:15:142
451991917,1cyclictest28438-21cat19:55:232
451991917,1cyclictest0-21swapper/223:45:152
451991917,1cyclictest0-21swapper/221:00:162
451991911,4cyclictest0-21swapper/222:14:092
45199190,18cyclictest0-21swapper/221:57:262
45199190,18cyclictest0-21swapper/219:43:432
45199190,16cyclictest3987-21H222:10:212
45199190,16cyclictest3983-21H222:10:212
44699193,1cyclictest25185-21expr23:40:121
44699192,3cyclictest0-21swapper/119:14:261
44699192,2cyclictest6543-21egrep00:05:151
446991914,4cyclictest20969-21cut22:35:161
446991912,6cyclictest30799-21cpuspeed_turbos21:00:151
44699190,5cyclictest0-21swapper/122:52:111
44699190,1cyclictest0-21swapper/123:58:351
44699190,16cyclictest3989-21H222:10:211
44699190,16cyclictest0-21swapper/123:50:101
44699190,16cyclictest0-21swapper/119:59:511
44299193,1cyclictest0-21swapper/000:26:140
44299192,9cyclictest19481-21perf22:35:000
44299190,18cyclictest0-21swapper/022:55:230
45199182,2cyclictest32525-21cstates20:05:172
45199182,15cyclictest9198-21cstates22:15:142
45199182,15cyclictest17330-21grep23:25:192
45199182,15cyclictest0-21swapper/223:59:562
451991816,1cyclictest0-21swapper/223:10:222
451991816,1cyclictest0-21swapper/221:50:152
451991815,2cyclictest23195-21latency_hist19:50:012
451991814,3cyclictest7895-21nfsd400:05:182
451991814,3cyclictest3991-21H222:10:212
451991814,3cyclictest3976-21H222:10:212
451991813,2cyclictest3979-21H222:10:212
45199181,2cyclictest15109-21cpuspeed_turbos00:20:132
45199181,16cyclictest32648-21date23:55:002
45199180,2cyclictest4099-21H222:10:212
45199180,2cyclictest3989-21H222:10:212
45199180,17cyclictest0-21swapper/220:40:012
44699182,1cyclictest13441-21timerandwakeup22:20:221
44699182,15cyclictest25412-21cat20:50:131
44699182,15cyclictest22676-21/usr/sbin/munin20:45:151
44699182,15cyclictest1780-21timerwakeupswit20:05:241
44699182,15cyclictest12864-21pzem_power20:25:181
44699182,15cyclictest0-21swapper/119:40:181
446991816,1cyclictest21-21ksoftirqd/122:47:541
446991816,1cyclictest0-21swapper/121:14:141
446991815,2cyclictest13407-21nfsd400:15:191
446991814,3cyclictest21044-21nfsd420:40:171
44699181,2cyclictest10941-21awk20:25:011
44699180,3cyclictest9005-21awk23:10:191
44699180,3cyclictest25956-21awk19:55:011
44699180,3cyclictest19344-21postgres22:33:401
44699180,2cyclictest3991-21H222:10:211
44699180,17cyclictest22747-21perf00:35:001
44699180,17cyclictest0-21swapper/123:22:561
44699180,16cyclictest3989-21H222:10:211
44699180,16cyclictest26353-21python321:50:011
44699180,15cyclictest3983-21H222:10:211
44699180,15cyclictest3976-21H222:10:211
44299182,15cyclictest28102-21chrt22:48:390
442991816,1cyclictest9-21ksoftirqd/023:09:390
442991816,1cyclictest9-21ksoftirqd/022:54:030
44299181,16cyclictest30212-21http_loadtime20:00:160
44299180,2cyclictest4099-21H222:10:210
44299180,2cyclictest3985-21H222:10:210
44299180,2cyclictest3985-21H222:10:210
44299180,17cyclictest3981-21H222:10:210
44299180,16cyclictest3985-21H222:10:210
44299180,16cyclictest0-21swapper/023:30:580
45199172,1cyclictest0-21swapper/220:50:202
451991715,1cyclictest0-21swapper/223:00:152
451991714,2cyclictest9929-21expr00:10:142
451991714,2cyclictest9929-21expr00:10:142
451991714,2cyclictest9913-21cstates19:25:152
451991714,2cyclictest7519-21cat19:20:172
451991714,2cyclictest3385-21ls22:05:142
451991714,2cyclictest28950-21cstates22:50:152
451991714,2cyclictest26377-21mailstats23:40:192
451991714,2cyclictest25916-21apache_accesses22:45:122
451991714,2cyclictest23244-21python321:45:012
451991714,2cyclictest21633-21users20:40:222
451991714,2cyclictest18607-21awk00:25:172
451991714,2cyclictest13145-21cat19:30:192
451991713,3cyclictest0-21swapper/223:30:252
45199171,1cyclictest399-20systemd-journal23:15:002
45199171,1cyclictest0-21swapper/220:30:142
45199171,15cyclictest20483-21cpuspeed_turbos00:30:142
45199170,2cyclictest7561-21cstates21:15:152
45199170,2cyclictest5645-21ntp_kernel_pll_21:10:192
45199170,2cyclictest29927-21seq20:56:412
45199170,2cyclictest23622-21apt-get19:50:122
45199170,2cyclictest15211-21vmstat23:20:232
45199170,2cyclictest13200-21http_loadtime21:25:162
45199170,2cyclictest12339-21cat20:25:152
45199170,1cyclictest3983-21H222:10:212
45199170,16cyclictest634-21expr22:00:122
45199170,16cyclictest3976-21H222:10:212
45199170,16cyclictest3976-21H222:10:212
45199170,16cyclictest32664-21grep22:55:182
45199170,16cyclictest2665-21mailstats21:05:212
45199170,16cyclictest23682-21expr22:40:142
45199170,16cyclictest23113-21fschecks_time20:45:152
45199170,16cyclictest21950-21sed21:40:182
45199170,16cyclictest1884-21cat19:10:182
45199170,16cyclictest18541-21/usr/sbin/munin22:30:182
45199170,16cyclictest10099-21expr21:20:172
44699172,1cyclictest318682chrt21:56:411
446991714,2cyclictest6404-21grep22:10:161
446991714,2cyclictest5131-21cstates23:05:141
446991714,2cyclictest23908-21idleruntime00:35:181
446991714,2cyclictest21993-21tr23:35:121
446991714,2cyclictest16250-21ntp_offset19:35:201
446991714,2cyclictest16148-21grep23:25:141
446991714,2cyclictest14136-21cpuspeed_turbos20:30:141
446991714,2cyclictest10731-21tr23:15:131
446991714,2cyclictest10057-21df_inode00:10:141
446991714,2cyclictest10057-21df_inode00:10:141
44699170,2cyclictest3983-21H222:10:211
44699170,2cyclictest3169-21grep23:00:191
44699170,2cyclictest20118-21ntp_states23:30:201
44699170,2cyclictest1522-21lxd00:00:361
44699170,2cyclictest10787-21/usr/sbin/munin21:20:191
44699170,2cyclictest1017-21if_enp1s022:00:141
44699170,16cyclictest6990-21apache_accesses21:15:121
44699170,16cyclictest28160-21missed_timers21:50:181
44699170,16cyclictest2109-21missed_timers21:05:181
44699170,16cyclictest2007-21systemd-journal20:17:001
44699170,16cyclictest15828-21fschecks_count21:30:161
44699170,16cyclictest14090-21sshd19:30:431
44699170,16cyclictest13990-21pzem_energy21:25:221
44699170,16cyclictest0-21swapper/119:15:181
442991715,1cyclictest9-21ksoftirqd/022:20:220
442991714,2cyclictest8296-21pluginstate20:20:020
442991714,2cyclictest4422-21fschecks_time00:00:150
442991714,2cyclictest3989-21H222:10:210
442991714,2cyclictest3983-21H222:10:210
442991714,2cyclictest3976-21H222:10:210
442991714,2cyclictest24064-21lsb_release23:38:310
442991714,2cyclictest20029-21expr20:40:130
442991714,2cyclictest18518-21df_inode21:35:150
442991714,2cyclictest17070-21cstates20:35:140
442991714,2cyclictest13875-21switchtime00:15:220
442991714,2cyclictest10447-21sed00:10:180
442991714,2cyclictest10447-21sed00:10:170
44299170,2cyclictest4099-21H222:10:210
44299170,2cyclictest3991-21H222:10:210
44299170,2cyclictest3985-21H222:10:210
44299170,2cyclictest29063-21cut20:55:180
44299170,2cyclictest15305-21cpuspeed_turbos21:30:160
44299170,2cyclictest14504-21snapd20:45:220
44299170,2cyclictest11500-21cut22:20:000
44299170,16cyclictest843-21systemd-network21:46:200
44299170,16cyclictest8251-21chrt22:11:380
44299170,16cyclictest4482-21cut21:10:150
44299170,16cyclictest3983-21H222:10:210
44299170,16cyclictest3983-21H222:10:210
44299170,16cyclictest3983-21H222:10:210
44299170,16cyclictest3976-21H222:10:210
44299170,16cyclictest2007-21systemd-journal21:05:250
44299170,16cyclictest14897-21munin-run21:30:000
44299170,16cyclictest14500-21snapd19:22:580
44299170,16cyclictest12044-21hddtemp_smartct20:25:130
44299170,16cyclictest0-21swapper/022:41:320
446991614,1cyclictest0-21swapper/119:20:141
44699160,15cyclictest3186-21expr20:10:141
442991614,1cyclictest1848-21latency19:10:170
442991614,1cyclictest0-21swapper/020:30:160
442991614,1cyclictest0-21swapper/019:45:010
442991614,1cyclictest0-21swapper/019:25:150
442991614,1cyclictest0-21swapper/019:15:140
44299160,2cyclictest8977-21expr20:20:170
44299160,2cyclictest459-21expr22:00:130
44299160,2cyclictest3547-21expr22:05:140
44299160,1cyclictest0-21swapper/023:45:160
44299160,1cyclictest0-21swapper/019:30:050
44299160,1cyclictest0-21swapper/000:20:170
44299160,15cyclictest24331-21http_loadtime19:50:150
44299160,15cyclictest23327-21cpuspeed_turbos00:35:150
44299160,15cyclictest18042-21cnf-update-db19:40:030
44299160,15cyclictest0-21swapper/021:55:130
44299160,15cyclictest0-21swapper/020:05:190
442991513,1cyclictest0-21swapper/020:50:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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