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2026-08-14 - 16:03
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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 Fri Aug 14, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28121993331,2cyclictest0-21swapper/112:05:211
28121993129,2cyclictest0-21swapper/110:00:131
28121993029,0cyclictest0-21swapper/108:45:191
28121993028,2cyclictest0-21swapper/112:28:291
28121992827,0cyclictest0-21swapper/107:35:401
28121992617,0cyclictest0-21swapper/112:13:331
2812199250,20cyclictest13273-21wc07:40:121
2812399240,11cyclictest0-21swapper/212:39:262
2812099244,11cyclictest12924-21sed09:35:020
2812399222,17cyclictest0-21swapper/208:30:012
2812199214,1cyclictest4099-21H222:10:211
2812199214,16cyclictest3983-21H222:10:211
2812199214,11cyclictest0-21swapper/107:23:521
2812099217,13cyclictest0-21swapper/009:29:050
2812199200,19cyclictest0-21swapper/108:50:131
2812099204,15cyclictest0-21swapper/009:10:030
28120992020,0cyclictest0-21swapper/007:20:170
2812399193,2cyclictest3989-21H222:10:212
2812399192,16cyclictest28149-21cat10:00:132
28123991917,1cyclictest0-21swapper/211:20:232
28123991914,2cyclictest3981-21H222:10:212
2812399190,2cyclictest3979-21H222:10:212
2812399190,2cyclictest0-21swapper/211:48:062
2812399190,17cyclictest3991-21H222:10:212
2812399190,16cyclictest3983-21H222:10:212
2812399190,16cyclictest3981-21H222:10:212
2812399190,16cyclictest3981-21H222:10:212
2812199192,3cyclictest0-21swapper/109:45:011
2812199192,2cyclictest17777-21expr11:35:131
2812199192,16cyclictest1206-21chrt09:11:291
28121991917,1cyclictest0-21swapper/112:23:461
28121991916,2cyclictest4582-21processes08:20:211
28121991914,4cyclictest9965-21cat07:35:011
28121991914,2cyclictest3989-21H222:10:211
2812199190,18cyclictest4659-21apache_processe07:25:151
2812199190,18cyclictest25480-21idleruntime-cro09:00:011
2812199190,18cyclictest25480-21idleruntime-cro09:00:001
2812199190,16cyclictest3989-21H222:10:211
2812099193,15cyclictest9-21ksoftirqd/007:47:450
28120991917,1cyclictest9-21ksoftirqd/010:55:000
2812099190,2cyclictest3989-21H222:10:210
2812099190,2cyclictest3985-21H222:10:210
2812099190,16cyclictest4035-21H222:10:210
2812399182,2cyclictest1447-21cat10:10:152
2812399182,2cyclictest1447-21cat10:10:142
28123991818,0cyclictest0-21swapper/207:10:182
28123991816,1cyclictest445-21ntp_states12:00:192
28123991815,2cyclictest28463-21ntpq10:55:192
28123991814,3cyclictest3985-21H222:10:212
28123991814,3cyclictest3976-21H222:10:212
28123991813,2cyclictest3987-21H222:10:212
2812399180,3cyclictest5255-21cut12:10:132
2812399180,2cyclictest4035-21H222:10:212
2812399180,2cyclictest3987-21H222:10:212
2812399180,17cyclictest4099-21H222:10:212
2812399180,17cyclictest3991-21H222:10:212
2812399180,16cyclictest3976-21H222:10:212
2812399180,15cyclictest3987-21H222:10:212
2812199182,15cyclictest21-21ksoftirqd/108:26:101
28121991813,2cyclictest3983-21H222:10:211
2812199180,2cyclictest5156-21cpuspeed_turbos09:20:131
2812199180,2cyclictest5156-21cpuspeed_turbos09:20:131
2812199180,2cyclictest4099-21H222:10:211
2812199180,2cyclictest4099-21H222:10:211
2812199180,2cyclictest3979-21H222:10:211
2812199180,2cyclictest3979-21H222:10:211
2812199180,2cyclictest3979-21H222:10:211
2812199180,2cyclictest0-21swapper/112:35:441
2812199180,17cyclictest9598-21grep11:20:131
2812199180,16cyclictest14501-21snapd11:00:151
2812199180,15cyclictest3981-21H222:10:211
2812099183,1cyclictest9-21ksoftirqd/011:13:140
2812099182,15cyclictest9-21ksoftirqd/010:58:300
28120991816,1cyclictest9-21ksoftirqd/008:40:520
28120991816,1cyclictest9-21ksoftirqd/008:36:290
28120991814,3cyclictest3987-21H222:10:210
28120991814,3cyclictest2957-21rtkit-daemon07:36:430
28120991814,3cyclictest2007-21systemd-journal09:39:010
28120991814,2cyclictest3991-21H222:10:210
2812099180,2cyclictest4099-21H222:10:210
2812099180,2cyclictest3989-21H222:10:210
2812099180,2cyclictest3981-21H222:10:210
2812099180,2cyclictest3976-21H222:10:210
2812099180,17cyclictest3979-21H222:10:210
2812099180,16cyclictest3989-21H222:10:210
2812099180,16cyclictest3979-21H222:10:210
2812099180,15cyclictest3979-21H222:10:210
28123991715,1cyclictest0-21swapper/207:20:202
28123991714,2cyclictest6407-21grep09:20:192
28123991714,2cyclictest6407-21grep09:20:182
28123991714,2cyclictest3991-21H222:10:212
28123991714,2cyclictest3987-21H222:10:212
28123991714,2cyclictest3976-21H222:10:212
28123991714,2cyclictest3976-21H222:10:212
28123991714,2cyclictest31725-21ntp_kernel_pll_11:00:192
28123991714,2cyclictest26599-21df_inode11:50:132
28123991714,2cyclictest26599-21df_inode11:50:132
28123991714,2cyclictest23548-21needreboot09:50:172
28123991714,2cyclictest22532-21grep07:55:192
28123991714,2cyclictest16448-21pzem_current11:30:202
28123991714,2cyclictest1079-21cups-browsed07:30:242
2812399171,1cyclictest3987-21H222:10:212
2812399171,15cyclictest0-21swapper/210:25:152
2812399170,2cyclictest3989-21H222:10:212
2812399170,2cyclictest3989-21H222:10:212
2812399170,2cyclictest3989-21H222:10:212
2812399170,2cyclictest3987-21H222:10:212
2812399170,2cyclictest3987-21H222:10:212
2812399170,2cyclictest3976-21H222:10:212
2812399170,2cyclictest14994-21grep09:35:192
2812399170,2cyclictest13784-21/usr/sbin/munin10:30:162
2812399170,1cyclictest3976-21H222:10:212
2812399170,1cyclictest3450-21gsd-color09:31:092
2812399170,16cyclictest5010-21idleruntime10:15:152
2812399170,16cyclictest455-21plymouthd10:35:002
2812399170,16cyclictest455-21plymouthd08:35:162
2812399170,16cyclictest4099-21H222:10:212
2812399170,16cyclictest3987-21H222:10:212
2812399170,16cyclictest3979-21H222:10:212
2812399170,16cyclictest24230-21expr08:00:152
2812399170,16cyclictest15741-21/usr/sbin/munin07:45:122
2812399170,15cyclictest0-21swapper/209:16:022
2812399170,15cyclictest0-21swapper/208:46:082
2812199172,1cyclictest21-21ksoftirqd/109:51:241
28121991715,1cyclictest21-21ksoftirqd/107:18:021
28121991714,2cyclictest3983-21H222:10:211
28121991714,2cyclictest3981-21H222:10:211
28121991714,2cyclictest32202-21http_loadtime12:00:141
28121991714,2cyclictest30154-21nvmesmart_nvme011:55:181
28121991714,2cyclictest22308-21ls11:40:211
28121991714,2cyclictest20585-21irqstats09:45:181
28121991714,2cyclictest16339-21nvmesmart_nvme011:30:191
28121991714,2cyclictest11792-21awk09:30:201
28121991713,2cyclictest3983-21H222:10:211
2812199171,1cyclictest0-21swapper/110:30:221
2812199171,15cyclictest32397-21cpuspeed_turbos08:15:141
2812199170,3cyclictest26969-21expr08:05:151
2812199170,2cyclictest4570-21cstates10:15:141
2812199170,2cyclictest4426-21ls11:10:121
2812199170,2cyclictest4099-21H222:10:211
2812199170,2cyclictest4099-21H222:10:211
2812199170,2cyclictest3991-21H222:10:211
2812199170,2cyclictest3976-21H222:10:211
2812199170,2cyclictest23567-21awk08:00:001
2812199170,2cyclictest15994-21apache_accesses10:35:111
2812199170,16cyclictest9409-21expr08:30:151
2812199170,16cyclictest9409-21expr08:30:141
2812199170,16cyclictest8436-21expr12:15:141
2812199170,16cyclictest7701-21perl10:20:161
2812199170,16cyclictest4099-21H222:10:211
2812199170,16cyclictest29582-21apache_volume08:10:131
2812199170,16cyclictest27625-21mailstats11:50:211
2812199170,16cyclictest27625-21mailstats11:50:211
2812199170,16cyclictest21646-21egrep10:45:131
2812199170,16cyclictest18879-21/usr/sbin/munin10:40:131
2812199170,16cyclictest14499-21snapd12:30:281
2812199170,16cyclictest10752-21fschecks_count10:25:141
2812199170,16cyclictest1035-21thermald11:15:201
2812199170,15cyclictest3987-21H222:10:211
2812099172,15cyclictest9-21ksoftirqd/012:09:120
28120991715,1cyclictest9-21ksoftirqd/008:05:020
28120991715,1cyclictest10912sleep010:10:060
28120991715,1cyclictest10912sleep010:10:050
28120991714,2cyclictest4099-21H222:10:210
28120991714,2cyclictest3987-21H222:10:210
28120991714,2cyclictest3987-21H222:10:210
28120991714,2cyclictest3979-21H222:10:210
28120991714,2cyclictest13899-21expr12:25:130
28120991713,3cyclictest3983-21H222:10:210
2812099170,3cyclictest23322-21uname09:50:170
2812099170,2cyclictest3983-21H222:10:210
2812099170,2cyclictest3981-21H222:10:210
2812099170,2cyclictest3981-21H222:10:210
2812099170,2cyclictest3976-21H222:10:210
2812099170,2cyclictest30696-21missed_timers08:10:180
2812099170,2cyclictest30591-21acpi10:05:110
2812099170,2cyclictest29826-21ntpq07:10:180
2812099170,2cyclictest26592-21sort09:00:150
2812099170,2cyclictest21599-21cat11:40:170
2812099170,1cyclictest3989-21H222:10:210
2812099170,1cyclictest3989-21H222:10:210
2812099170,16cyclictest5201-21expr07:25:170
2812099170,16cyclictest4099-21H222:10:210
2812099170,16cyclictest3991-21H222:10:210
2812099170,16cyclictest3991-21H222:10:210
2812099170,16cyclictest3979-21H222:10:210
2812099170,16cyclictest3053-21systemd-logind10:38:520
2812099170,16cyclictest27520-21ps11:50:200
2812099170,16cyclictest27520-21ps11:50:190
2812099170,16cyclictest2069-21systemd-udevd08:52:510
2812099170,16cyclictest19891-21cpuspeed_turbos09:45:150
2812099170,16cyclictest18370-21which11:35:140
2812099170,16cyclictest14495-21snapd08:25:580
2812099170,16cyclictest13780-21mailstats11:25:210
2812099170,16cyclictest13780-21mailstats11:25:210
28123991614,1cyclictest0-21swapper/210:40:082
28123991614,1cyclictest0-21swapper/209:40:122
28123991613,2cyclictest25264-21cpuspeed_turbos09:55:152
2812399160,1cyclictest0-21swapper/211:35:102
2812399160,15cyclictest8861-21apache_processe08:30:112
2812399160,15cyclictest8861-21apache_processe08:30:112
2812399160,15cyclictest21946-21cat10:45:142
2812399160,15cyclictest0-21swapper/211:05:122
28120991614,1cyclictest23935-21/usr/sbin/munin08:00:190
28120991614,1cyclictest0-21swapper/008:45:160
2812099160,2cyclictest3989-21H222:10:210
2812099160,2cyclictest20186-21ntp_states12:35:190
2812099160,1cyclictest0-21swapper/008:20:200
2812099160,15cyclictest659-21apt-get11:05:120
2812099160,15cyclictest18899-21apache_accesses10:40:120
2812099160,15cyclictest0-21swapper/010:45:110
2812099160,15cyclictest0-21swapper/008:30:120
2812099160,15cyclictest0-21swapper/008:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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