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2026-09-15 - 15:55
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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 Tue Sep 15, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
879999290,1cyclictest0-21swapper/009:45:120
880399220,4cyclictest0-21swapper/112:06:521
880399220,21cyclictest870-21systemd-logind08:16:521
879999220,6cyclictest14382-21perf10:10:010
8803992119,1cyclictest21-21ksoftirqd/110:08:591
8803992118,2cyclictest4559-21if_lxdbr009:50:161
8799992115,3cyclictest0-21swapper/011:44:240
880899202,3cyclictest0-21swapper/211:05:172
880899200,17cyclictest0-21swapper/212:06:122
880399204,15cyclictest21-21ksoftirqd/112:20:011
880899192,16cyclictest14578-21latency_hist12:05:012
8808991916,2cyclictest9068-21seq09:02:182
880899190,1cyclictest0-21swapper/211:55:242
880899190,18cyclictest0-21swapper/212:30:162
8803991917,1cyclictest21-21ksoftirqd/110:00:301
8803991917,1cyclictest21-21ksoftirqd/109:50:011
8799991916,2cyclictest15157-21latency_hist09:15:010
8799991915,3cyclictest0-21swapper/008:25:010
8799991915,3cyclictest0-21swapper/008:25:010
8799991913,3cyclictest0-21swapper/011:35:150
879999190,3cyclictest0-21swapper/010:16:220
879999190,2cyclictest3989-21H222:10:210
879999190,16cyclictest4099-21H222:10:210
879999190,16cyclictest3989-21H222:10:210
879999190,16cyclictest3976-21H222:10:210
8808991815,2cyclictest4035-21H222:10:212
8808991814,3cyclictest4099-21H222:10:212
880899181,16cyclictest23019-21iwlist11:20:162
880899180,17cyclictest6680-21munin-plugin-st11:50:002
880899180,16cyclictest5479-21nfsd408:55:202
880899180,15cyclictest3976-21H222:10:212
8803991815,2cyclictest2599-21processes08:50:211
8803991814,1cyclictest0-21swapper/111:55:551
880399181,2cyclictest17429-21cut11:10:171
880399180,2cyclictest3981-21H222:10:211
880399180,16cyclictest399-20systemd-journal08:49:551
880399180,16cyclictest3985-21H222:10:211
880399180,15cyclictest3979-21H222:10:211
880399180,0cyclictest0-21swapper/107:57:441
8799991816,1cyclictest26115-21chrt08:35:190
8799991816,1cyclictest0-21swapper/010:35:530
879999181,16cyclictest19580-21switchtime12:10:260
879999181,16cyclictest0-21swapper/008:05:010
879999180,17cyclictest3983-21H222:10:210
879999180,15cyclictest3991-21H222:10:210
8808991716,1cyclictest28-21ksoftirqd/207:15:492
8808991715,1cyclictest0-21swapper/212:20:152
8808991715,1cyclictest0-21swapper/211:40:212
8808991715,1cyclictest0-21swapper/211:35:132
8808991714,2cyclictest9317-21cut07:10:142
8808991714,2cyclictest7672-21apt-config10:55:002
8808991714,2cyclictest4478-21python310:50:012
8808991714,2cyclictest4027-21changes_closed09:15:142
8808991714,2cyclictest28965-21nfsd411:30:192
8808991714,2cyclictest26018-21cat07:40:152
8808991714,2cyclictest18568-21nfsd407:25:172
8808991714,2cyclictest15885-21missed_timers10:10:162
8808991714,2cyclictest1526-21lxd08:14:432
880899171,15cyclictest522-21mailstats10:40:202
880899170,2cyclictest9813-21fschecks_count10:00:152
880899170,2cyclictest698-21latency_hist08:50:012
880899170,2cyclictest6638-21cut09:55:162
880899170,2cyclictest31447-21gpgconf07:50:022
880899170,2cyclictest21818-21nfsd412:15:182
880899170,2cyclictest14550-21snapd10:17:582
880899170,1cyclictest0-21swapper/208:09:092
880899170,16cyclictest6187-21apache212:10:192
880899170,16cyclictest3991-21H222:10:212
880899170,16cyclictest3315-21https09:50:022
880899170,16cyclictest31448-21wc09:40:212
880899170,16cyclictest27541-21ps12:25:182
880899170,16cyclictest25463-21cut09:30:172
880899170,16cyclictest2369-21nfsd408:50:182
880899170,16cyclictest19498-21idleruntime09:20:142
880899170,16cyclictest17527-21ntp_kernel_pll_08:20:212
880899170,16cyclictest17527-21ntp_kernel_pll_08:20:202
880899170,16cyclictest0-21swapper/211:26:332
880899170,15cyclictest0-21swapper/211:15:182
880399172,14cyclictest4731-21expr08:55:151
8803991716,1cyclictest21-21ksoftirqd/110:21:281
8803991715,1cyclictest21-21ksoftirqd/111:20:171
8803991715,1cyclictest0-21swapper/111:00:001
8803991714,2cyclictest9117-21apt-get07:10:131
8803991714,2cyclictest5629-21sendmail_mailtr11:45:221
8803991714,2cyclictest3981-21H222:10:211
8803991714,2cyclictest3981-21H222:10:211
8803991714,2cyclictest23259-21cat07:35:151
8803991714,2cyclictest20570-21missed_timers11:15:171
8803991714,2cyclictest17543-21ntp_offset08:20:211
8803991714,2cyclictest17543-21ntp_offset08:20:201
8803991714,2cyclictest10480-21basename09:05:161
8803991713,3cyclictest3983-21H222:10:211
880399171,15cyclictest21-21ksoftirqd/110:40:041
880399171,15cyclictest0-21swapper/110:45:201
880399170,2cyclictest3981-21H222:10:211
880399170,2cyclictest3414-21master07:29:051
880399170,2cyclictest27275-21mailstats07:40:221
880399170,16cyclictest455-21plymouthd08:40:141
880399170,16cyclictest399-20systemd-journal09:16:341
880399170,16cyclictest3991-21H222:10:211
880399170,16cyclictest31516-21chrt07:50:021
880399170,16cyclictest29875-21wc07:45:181
880399170,16cyclictest28757-21sed09:35:221
880399170,16cyclictest2872-21systemd-logind09:56:521
880399170,16cyclictest2872-21systemd-logind09:30:511
880399170,16cyclictest14994-21cpuspeed_turbos10:10:111
880399170,16cyclictest14550-21snapd07:30:211
880399170,16cyclictest0-21swapper/111:44:581
880399170,15cyclictest0-21swapper/112:01:101
879999172,14cyclictest0-21swapper/007:50:020
8799991715,1cyclictest0-21swapper/010:25:140
8799991714,2cyclictest6453-21cat11:50:000
8799991714,2cyclictest30383-21cut12:30:240
8799991714,2cyclictest29183-21nfsd408:40:190
8799991714,2cyclictest27240-21sed12:25:160
8799991714,2cyclictest20432-21sort11:15:180
8799991714,2cyclictest14505-21snapd08:45:010
8799991714,2cyclictest10995-21expr08:10:130
879999171,15cyclictest17483-21systemctl09:16:040
879999171,15cyclictest15225-21timerwakeupswit08:15:220
879999170,2cyclictest29369-21cron09:40:000
879999170,2cyclictest27558-21timerwakeupswit07:40:220
879999170,2cyclictest19415-21latency_hist11:15:010
879999170,2cyclictest17315-21sessionclean12:09:010
879999170,2cyclictest15180-21nfsd411:05:190
879999170,2cyclictest10526-21awk09:05:160
879999170,17cyclictest0-21swapper/007:30:170
879999170,16cyclictest8335-21mailstats11:50:230
879999170,16cyclictest5359-21cut10:50:120
879999170,16cyclictest399-20systemd-journal10:49:560
879999170,16cyclictest3707-21master08:51:510
879999170,16cyclictest23798-21munin-plugin-st09:30:010
879999170,16cyclictest23731-21processes11:20:190
879999170,16cyclictest1300-21lxd08:32:430
879999170,16cyclictest11858-21ls11:00:160
879999170,16cyclictest11210-21sshd10:01:370
879999170,16cyclictest0-21swapper/009:31:180
8808991614,1cyclictest32634-21cpuspeed_turbos09:45:122
8808991614,1cyclictest0-21swapper/211:10:192
8808991614,1cyclictest0-21swapper/210:25:142
8808991614,1cyclictest0-21swapper/208:25:022
8808991614,1cyclictest0-21swapper/207:20:182
8808991613,2cyclictest3979-21H222:10:212
8808991613,2cyclictest25168-21proxymap07:39:062
880899160,1cyclictest9723-21cpu09:05:132
880899160,1cyclictest0-21swapper/210:55:182
880899160,1cyclictest0-21swapper/208:40:122
880899160,15cyclictest28813-21expr10:35:152
880899160,15cyclictest27674-21anvil10:33:482
880899160,15cyclictest26014-21latency08:35:182
880899160,15cyclictest22005-21cat09:25:142
880899160,15cyclictest20639-21df07:30:142
880899160,15cyclictest12484-21ntpq11:00:182
880899160,15cyclictest0-21swapper/208:30:182
880899160,15cyclictest0-21swapper/208:15:152
880899160,15cyclictest0-21swapper/208:00:182
880899160,15cyclictest0-21swapper/207:45:352
8803991614,1cyclictest0-21swapper/111:30:151
8803991614,1cyclictest0-21swapper/111:29:151
8803991614,1cyclictest0-21swapper/110:55:011
8803991614,1cyclictest0-21swapper/110:30:141
8803991614,1cyclictest0-21swapper/108:35:191
8803991613,2cyclictest12649-21pzem_power11:00:211
8803991613,2cyclictest12612-21grep09:10:151
880399161,1cyclictest12392-21expr07:15:131
880399160,1cyclictest15318-21ps11:05:201
880399160,1cyclictest0-21swapper/111:35:171
880399160,1cyclictest0-21swapper/110:15:131
880399160,1cyclictest0-21swapper/108:05:131
880399160,1cyclictest0-21swapper/108:00:181
880399160,15cyclictest23096-21cpuspeed_turbos10:25:131
880399160,15cyclictest22424-21cpuspeed_turbos08:30:161
880399160,15cyclictest19379-21dpkg08:25:021
880399160,15cyclictest11242-21df08:10:141
880399160,15cyclictest0-21swapper/109:40:131
880399160,15cyclictest0-21swapper/109:20:141
880399160,15cyclictest0-21swapper/109:00:161
880399160,15cyclictest0-21swapper/107:20:191
8799991614,1cyclictest317622chrt09:40:230
8799991614,1cyclictest0-21swapper/008:25:000
8799991614,1cyclictest0-21swapper/007:25:180
8799991614,1cyclictest0-21swapper/007:20:140
8799991613,2cyclictest4035-21H222:10:210
8799991613,2cyclictest3983-21H222:10:210
8799991613,2cyclictest3979-21H222:10:210
879999160,1cyclictest0-21swapper/010:40:210
879999160,15cyclictest9291-21tr07:10:150
879999160,15cyclictest2546-21apt-get09:50:020
879999160,15cyclictest18745-21apt-get09:20:100
879999160,15cyclictest12417-21df_inode07:15:150
879999160,15cyclictest0-21swapper/011:00:010
879999160,15cyclictest0-21swapper/010:25:000
879999160,15cyclictest0-21swapper/010:10:160
879999160,15cyclictest0-21swapper/008:55:160
879999160,15cyclictest0-21swapper/008:06:560
879999160,15cyclictest0-21swapper/007:35:180
879999151,14cyclictest0-21swapper/011:25:030
879999150,1cyclictest0-21swapper/010:30:130
879999150,14cyclictest0-21swapper/011:30:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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