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2026-08-07 - 05:45
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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 Aug 07, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24623992726,0cyclictest0-21swapper/122:25:161
24624992514,10cyclictest4526-21fschecks_count23:15:172
24624992414,10cyclictest0-21swapper/219:20:172
2462499230,18cyclictest0-21swapper/221:00:152
2462399230,5cyclictest0-21swapper/121:25:411
2462399230,18cyclictest0-21swapper/121:00:171
2462399210,3cyclictest0-21swapper/122:33:311
24624992017,2cyclictest5582-21ntp_kernel_err21:25:192
24624992017,2cyclictest3976-21H222:10:212
2462499201,18cyclictest13638-21ls21:40:192
24623992018,1cyclictest0-21swapper/100:30:031
24623992016,3cyclictest0-21swapper/121:17:231
2462299203,2cyclictest19925-21python300:40:000
2462499192,16cyclictest3990-21H222:10:212
24624991916,2cyclictest5315-21missed_timers19:30:182
24624991915,3cyclictest0-21swapper/223:01:102
2462499190,18cyclictest0-21swapper/221:53:522
2462399190,16cyclictest4099-21H222:10:211
2462399190,16cyclictest4035-21H222:10:211
24622991917,1cyclictest14015-21ntp_states19:45:190
2462299190,1cyclictest0-21swapper/023:10:140
2462299190,1cyclictest0-21swapper/023:10:130
2462499182,1cyclictest316972chrt22:13:112
2462499182,15cyclictest28-21ksoftirqd/220:23:242
2462499182,15cyclictest0-21swapper/222:04:092
24624991816,1cyclictest3979-21H222:10:212
24624991815,2cyclictest17739-21munin-run23:40:002
24624991814,3cyclictest2007-21systemd-journal23:07:392
2462499181,2cyclictest6077-21cpuspeed_turbos00:15:142
2462499180,3cyclictest18726-21chrt20:54:132
2462499180,2cyclictest22076-21nfsd420:00:192
2462499180,1cyclictest3987-21H222:10:212
2462499180,1cyclictest0-21swapper/221:39:112
2462399182,15cyclictest6714-21awk20:30:191
2462399182,15cyclictest0-21swapper/123:14:081
2462399182,15cyclictest0-21swapper/123:14:081
2462399182,15cyclictest0-21swapper/121:52:231
24623991816,1cyclictest0-21swapper/120:49:531
24623991815,2cyclictest15762-21cstates21:45:161
24623991814,1cyclictest0-21swapper/120:50:151
24623991813,1cyclictest0-21swapper/120:15:181
2462399181,16cyclictest6758-21cupsd23:20:151
2462399181,16cyclictest3985-21H222:10:211
2462399181,16cyclictest1351-21lxd00:06:361
2462399181,15cyclictest3991-21H222:10:211
2462399180,2cyclictest30087-21smtp19:16:341
2462399180,17cyclictest12134-21latency_hist21:40:001
2462399180,17cyclictest1043-21grep22:15:191
2462299182,1cyclictest0-21swapper/000:32:570
2462299182,15cyclictest0-21swapper/020:36:460
24622991816,1cyclictest0-21swapper/021:19:230
24622991815,2cyclictest26616-21tlsmgr21:32:230
24622991815,2cyclictest22388-21sensors21:55:210
24622991815,2cyclictest1071-21nfsd400:05:170
24622991814,3cyclictest17655-21latency_hist22:45:010
2462299181,16cyclictest27572-21/usr/sbin/munin21:10:190
2462299181,16cyclictest18589-21taskset20:52:200
2462299180,3cyclictest2334-21sed21:20:210
2462299180,3cyclictest13495-21bounce00:26:380
2462299180,3cyclictest13495-21bounce00:26:370
2462299180,2cyclictest3991-21H222:10:210
2462299180,1cyclictest0-21swapper/019:54:360
2462299180,17cyclictest3981-21H222:10:210
24624991714,2cyclictest3991-21H222:10:212
24624991714,2cyclictest3979-21H222:10:212
24624991714,2cyclictest3976-21H222:10:212
24624991714,2cyclictest32535-21cat00:05:142
24624991714,2cyclictest31125-21cstates21:15:122
24624991714,2cyclictest29630-21expr20:15:132
24624991714,2cyclictest25100-21tr22:55:212
24624991714,2cyclictest2069-21systemd-udevd19:48:522
24624991714,2cyclictest16498-21head21:45:192
24624991714,2cyclictest14828-21chrt22:39:062
2462499171,1cyclictest0-21swapper/220:25:172
2462499171,15cyclictest9354-21cpuspeed_turbos22:30:142
2462499170,2cyclictest517-21grep23:10:122
2462499170,2cyclictest517-21grep23:10:122
2462499170,2cyclictest2872-21systemd-logind23:24:522
2462499170,2cyclictest26250-21pzem_voltage21:05:202
2462499170,2cyclictest1688-21expr21:20:182
2462499170,2cyclictest15316-21chrt22:40:012
2462499170,2cyclictest11246-21cut00:25:012
2462499170,16cyclictest8454-21processes21:30:202
2462499170,16cyclictest4099-21H222:10:212
2462499170,16cyclictest32384-21grep22:15:142
2462499170,16cyclictest27542-21sed20:10:182
2462499170,16cyclictest27418-21needreboot22:05:172
2462499170,16cyclictest25331-21timerandwakeup20:05:232
2462499170,16cyclictest23120-21dump-pmu-power22:55:012
2462499170,16cyclictest14604-21apache_processe00:30:132
2462499170,16cyclictest11685-21ls19:40:212
2462499170,16cyclictest1156-21/usr/sbin/munin19:25:122
2462499170,16cyclictest0-21swapper/221:57:292
2462499170,16cyclictest0-21swapper/219:55:152
24623991715,1cyclictest3979-21H222:10:211
24623991715,1cyclictest17494-21tr00:35:151
24623991715,1cyclictest0-21swapper/122:55:141
24623991715,1cyclictest0-21swapper/121:55:031
24623991714,2cyclictest5994-21latency_hist22:25:011
24623991714,2cyclictest30244-21hddtemp_smartct22:10:141
24623991714,2cyclictest25894-21runrttasks21:05:181
24623991714,2cyclictest24283-21fschecks_time23:50:171
24623991714,2cyclictest2132-21sed20:25:011
24623991714,2cyclictest1523-21lxd21:14:531
24623991712,4cyclictest399-20systemd-journal20:02:191
2462399171,15cyclictest29743-21cpuspeed_turbos00:00:131
2462399171,15cyclictest1135-21dpkg21:20:161
2462399170,3cyclictest0-21swapper/122:50:141
2462399170,2cyclictest7103-21tr21:30:131
2462399170,2cyclictest3108-21timerandwakeup19:25:221
2462399170,2cyclictest30596-21hddtemp_smartct23:05:151
2462399170,2cyclictest28762-21turbostat.cron20:15:011
2462399170,2cyclictest26705-21cstates22:05:121
2462399170,2cyclictest13834-21python300:30:011
2462399170,2cyclictest13834-21python300:30:001
2462399170,2cyclictest12739-21expr22:35:141
2462399170,16cyclictest8739-21apache_volume00:20:121
2462399170,16cyclictest8230-21cpuspeed_turbos20:35:151
2462399170,16cyclictest5963-21/usr/sbin/munin00:15:171
2462399170,16cyclictest3976-21H222:10:211
2462399170,16cyclictest19431-21tr20:55:121
2462399170,16cyclictest19011-21uname19:55:181
2462399170,16cyclictest18573-21expr23:40:141
2462399170,16cyclictest15772-21ls23:35:121
2462399170,16cyclictest14533-21timerwakeupswit19:45:211
2462399170,16cyclictest13987-21nvmesmart_nvme021:40:211
2462399170,16cyclictest13567-21proc_pri23:30:191
2462399170,16cyclictest11936-21date23:30:011
2462299172,1cyclictest0-21swapper/020:21:400
24622991716,1cyclictest9-21ksoftirqd/023:54:200
24622991715,1cyclictest11198-21timerwakeupswit22:30:210
24622991715,1cyclictest0-21swapper/023:05:010
24622991715,1cyclictest0-21swapper/020:33:570
24622991715,1cyclictest0-21swapper/019:32:380
24622991714,2cyclictest9664-21wc23:25:130
24622991714,2cyclictest4099-21H222:10:210
24622991714,2cyclictest3989-21H222:10:210
24622991714,2cyclictest3450-21gsd-color23:15:010
24622991714,2cyclictest29771-21df_inode20:15:140
24622991714,2cyclictest27003-21expr23:00:160
24622991714,2cyclictest23749-21tr20:05:140
24622991714,2cyclictest21970-21apache_accesses21:00:110
24622991714,2cyclictest14496-21snapd22:08:200
24622991714,2cyclictest1300-21lxd21:46:540
24622991714,2cyclictest0-21swapper/022:55:000
2462299171,15cyclictest10201-21expr21:35:130
2462299170,2cyclictest8502-21timerwakeupswit23:20:230
2462299170,2cyclictest5146-21cat00:10:210
2462299170,2cyclictest4226-21apache_volume21:25:120
2462299170,2cyclictest3763-21expr22:20:130
2462299170,2cyclictest3059-21grep20:25:130
2462299170,2cyclictest19476-21/usr/sbin/munin21:50:210
2462299170,2cyclictest18206-21cpu23:40:140
2462299170,2cyclictest15470-21grep23:35:130
2462299170,2cyclictest1216-21awk22:15:180
2462299170,2cyclictest11855-21if_enp1s020:40:140
2462299170,16cyclictest7380-21ntp_states00:15:220
2462299170,16cyclictest455-21plymouthd22:30:010
2462299170,16cyclictest4035-21H222:10:210
2462299170,16cyclictest4035-21H222:10:210
2462299170,16cyclictest3987-21H222:10:210
2462299170,16cyclictest29423-21ntpq19:15:180
2462299170,16cyclictest25255-21sed22:55:210
2462299170,16cyclictest24884-21cpuspeed_turbos21:05:130
2462299170,16cyclictest24216-21hddtemp_smartct22:00:130
2462299170,16cyclictest23480-21latency_hist23:50:000
2462299170,16cyclictest20522-21grep20:55:170
2462299170,16cyclictest14683-21irqstats20:45:170
2462299170,16cyclictest13485-21interrupts21:40:170
2462299170,16cyclictest12594-21grep22:35:130
24624991614,1cyclictest3249-21apt-get22:20:132
24624991614,1cyclictest24226-21/usr/sbin/munin23:50:152
24624991614,1cyclictest0-21swapper/223:55:152
24624991614,1cyclictest0-21swapper/220:40:142
24624991614,1cyclictest0-21swapper/219:35:142
24624991613,2cyclictest28173-21df21:10:142
24624991613,2cyclictest11572-21grep00:25:142
24624991613,2cyclictest11572-21grep00:25:142
24624991613,2cyclictest10615-21nfsd423:25:182
2462499160,2cyclictest18086-21cpu22:45:132
2462499160,15cyclictest29254-21apt-key00:00:012
2462499160,15cyclictest2007-21systemd-journal20:30:242
2462499160,15cyclictest0-21swapper/223:45:102
2462499160,15cyclictest0-21swapper/222:25:142
2462499160,15cyclictest0-21swapper/219:10:132
24623991614,1cyclictest0-21swapper/123:55:141
24623991614,1cyclictest0-21swapper/122:00:101
24623991614,1cyclictest0-21swapper/120:25:121
24623991614,1cyclictest0-21swapper/120:05:111
24623991614,1cyclictest0-21swapper/119:50:141
2462399160,1cyclictest0-21swapper/119:30:071
2462399160,15cyclictest9665-21munin-plugin-st19:40:021
2462399160,15cyclictest20908-21apache_volume23:45:121
2462399160,15cyclictest0-21swapper/122:40:141
2462399160,15cyclictest0-21swapper/120:40:121
2462399160,15cyclictest0-21swapper/100:10:121
24622991614,1cyclictest10017-21awk00:20:190
24622991614,1cyclictest0-21swapper/019:35:210
24622991614,1cyclictest0-21swapper/019:29:530
24622991614,1cyclictest0-21swapper/000:00:130
24622991613,2cyclictest29249-21apt-config22:10:010
2462299160,15cyclictest26539-21expr23:55:150
2462299160,15cyclictest0-21swapper/023:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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