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2026-09-04 - 08:43
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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 Sep 04, 2026 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31791992413,10cyclictest0-21swapper/123:10:211
3179099242,14cyclictest0-21swapper/021:15:080
3179099231,4cyclictest0-21swapper/019:15:010
31792992220,1cyclictest4311-21mii-tool23:05:152
3179299220,18cyclictest0-21swapper/223:20:002
3179299214,16cyclictest1856-21systemd-udevd21:02:512
3179299210,20cyclictest870-21systemd-logind22:06:512
3179099210,21cyclictest0-21swapper/021:35:160
3179299203,3cyclictest0-21swapper/219:29:512
3179299200,19cyclictest843-21systemd-network20:06:322
31791992014,5cyclictest0-21swapper/121:54:551
3179299193,1cyclictest0-21swapper/219:55:192
3179299193,15cyclictest3991-21H222:10:212
3179299192,16cyclictest3987-21H222:10:212
31792991914,2cyclictest3987-21H222:10:212
3179299190,2cyclictest3987-21H222:10:212
3179299190,16cyclictest3985-21H222:10:212
3179299190,16cyclictest3983-21H222:10:212
3179199192,16cyclictest3976-21H222:10:211
31791991917,1cyclictest21-21ksoftirqd/119:26:131
31791991917,1cyclictest0-21swapper/120:44:471
31791991914,2cyclictest3989-21H222:10:211
3179199190,2cyclictest3985-21H222:10:211
3179199190,16cyclictest3987-21H222:10:211
3179199190,16cyclictest3985-21H222:10:211
31790991917,1cyclictest0-21swapper/020:37:090
31790991914,4cyclictest3991-21H222:10:210
3179099190,2cyclictest4636-21apache_volume00:05:120
3179099190,2cyclictest3985-21H222:10:210
3179099190,2cyclictest3983-21H222:10:210
3179099190,2cyclictest3979-21H222:10:210
3179099190,2cyclictest3979-21H222:10:210
3179099190,17cyclictest15892-21snapd00:00:280
3179099190,16cyclictest3991-21H222:10:210
3179099190,16cyclictest3991-21H222:10:210
3179099190,16cyclictest3987-21H222:10:210
3179099190,16cyclictest3987-21H222:10:210
3179099190,16cyclictest3985-21H222:10:210
3179099190,16cyclictest3981-21H222:10:210
3179299182,15cyclictest28-21ksoftirqd/222:42:052
3179299182,15cyclictest0-21swapper/221:25:402
3179299182,15cyclictest0-21swapper/220:40:162
31792991816,1cyclictest28-21ksoftirqd/223:13:192
31792991815,2cyclictest4099-21H222:10:212
31792991814,3cyclictest3981-21H222:10:212
31792991814,3cyclictest352-21jbd2/nvme0n1p2-21:25:012
31792991814,3cyclictest0-21swapper/200:23:532
3179299181,2cyclictest3203-21JS22:10:212
3179299180,2cyclictest4099-21H222:10:212
3179299180,2cyclictest4035-21H222:10:212
3179299180,2cyclictest3991-21H222:10:212
3179299180,2cyclictest3989-21H222:10:212
3179299180,2cyclictest3989-21H222:10:212
3179299180,2cyclictest3987-21H222:10:212
3179299180,2cyclictest3983-21H222:10:212
3179299180,2cyclictest3979-21H222:10:212
3179299180,2cyclictest3976-21H222:10:212
3179199182,15cyclictest28214-21cut23:50:001
31791991817,1cyclictest21-21ksoftirqd/123:25:381
31791991815,2cyclictest3976-21H222:10:211
31791991815,2cyclictest0-21swapper/122:20:191
31791991814,3cyclictest3985-21H222:10:211
31791991814,3cyclictest3985-21H222:10:211
31791991814,3cyclictest3979-21H222:10:211
31791991814,2cyclictest3981-21H222:10:211
31791991814,2cyclictest3976-21H222:10:211
3179199181,16cyclictest20674-21if_enp1s021:40:181
3179199180,3cyclictest3987-21H222:10:211
3179199180,2cyclictest3976-21H222:10:211
3179199180,17cyclictest4099-21H222:10:211
3179199180,17cyclictest3991-21H222:10:211
3179199180,17cyclictest3987-21H222:10:211
3179199180,16cyclictest15379-21https22:30:001
3179199180,15cyclictest4099-21H222:10:211
3179099182,15cyclictest0-21swapper/020:30:130
31790991814,3cyclictest3983-21H222:10:210
31790991813,3cyclictest0-21swapper/021:20:340
3179099180,3cyclictest8705-21munin-run23:15:000
3179099180,3cyclictest3987-21H222:10:210
3179099180,2cyclictest3989-21H222:10:210
3179099180,17cyclictest4035-21H222:10:210
3179099180,17cyclictest4035-21H222:10:210
3179099180,17cyclictest399-20systemd-journal22:10:410
3179099180,16cyclictest3979-21H222:10:210
3179099180,16cyclictest3976-21H222:10:210
3179099180,15cyclictest4099-21H222:10:210
3179099180,15cyclictest3987-21H222:10:210
3179099180,15cyclictest3985-21H222:10:210
3179099180,15cyclictest3979-21H222:10:210
31792991714,2cyclictest6734-21nfsd421:15:172
31792991714,2cyclictest3991-21H222:10:212
31792991714,2cyclictest3989-21H222:10:212
31792991714,2cyclictest3983-21H222:10:212
31792991714,2cyclictest2872-21systemd-logind22:28:522
31792991714,2cyclictest25267-21http_loadtime22:45:152
31792991714,2cyclictest23926-21ntp_kernel_pll_19:50:192
31792991714,2cyclictest18975-21cat22:35:142
31792991714,2cyclictest10561-21fschecks_time20:25:162
31792991713,3cyclictest3989-21H222:10:212
31792991713,3cyclictest3989-21H222:10:212
3179299170,2cyclictest7119-21/usr/sbin/munin22:15:222
3179299170,2cyclictest4099-21H222:10:212
3179299170,2cyclictest4099-21H222:10:212
3179299170,2cyclictest4099-21H222:10:212
3179299170,2cyclictest4035-21H222:10:212
3179299170,2cyclictest3989-21H222:10:212
3179299170,2cyclictest3983-21H222:10:212
3179299170,2cyclictest3981-21H222:10:212
3179299170,2cyclictest28866-21expr23:50:172
3179299170,1cyclictest3985-21H222:10:212
3179299170,16cyclictest3987-21H222:10:212
3179299170,16cyclictest3985-21H222:10:212
3179299170,16cyclictest3979-21H222:10:212
3179299170,16cyclictest3976-21H222:10:212
3179299170,16cyclictest22421-21ps20:45:202
3179299170,16cyclictest21385-21sendmail_mailst19:45:232
3179299170,16cyclictest16408-21fschecks_count22:30:182
3179299170,16cyclictest16225-21ls00:25:132
3179299170,16cyclictest0-21swapper/222:11:042
3179299170,15cyclictest3985-21H222:10:212
3179199172,1cyclictest3991-21H222:10:211
3179199172,1cyclictest0-21swapper/100:13:501
31791991715,1cyclictest24538-21/usr/sbin/munin22:45:111
31791991715,1cyclictest0-21swapper/100:00:161
31791991714,2cyclictest8474-21cpuspeed_turbos21:20:141
31791991714,2cyclictest4035-21H222:10:211
31791991714,2cyclictest3976-21H222:10:211
31791991714,2cyclictest32700-21/usr/sbin/munin23:55:221
31791991714,2cyclictest28890-21mailstats22:50:261
31791991714,2cyclictest20902-21if_err_enp1s023:35:171
31791991714,2cyclictest20595-21postgres22:37:201
31791991714,2cyclictest1105-21http_loadtime23:00:161
3179199171,2cyclictest28616-21cpuspeed_turbos23:50:151
3179199170,2cyclictest4961-21cat00:05:141
3179199170,2cyclictest4035-21H222:10:211
3179199170,2cyclictest3987-21H222:10:211
3179199170,2cyclictest3979-21H222:10:211
3179199170,2cyclictest21703-21expr00:35:151
3179199170,2cyclictest18546-21awk23:30:211
3179199170,2cyclictest1351-21lxd19:12:521
3179199170,2cyclictest1056-21pzem21:05:201
3179199170,16cyclictest4459-21sensors_temp19:15:201
3179199170,16cyclictest4035-21H222:10:211
3179199170,16cyclictest4035-21H222:10:211
3179199170,16cyclictest3987-21H222:10:211
3179199170,16cyclictest3985-21H222:10:211
3179199170,16cyclictest3983-21H222:10:211
3179199170,16cyclictest3983-21H222:10:211
3179199170,16cyclictest3979-21H222:10:211
3179199170,16cyclictest3976-21H222:10:211
3179199170,16cyclictest31910-21needreboot20:05:191
3179199170,16cyclictest29296-21nfsd421:55:181
3179199170,16cyclictest25404-21/usr/sbin/munin20:50:211
3179199170,16cyclictest22579-21apache_volume21:45:111
3179199170,16cyclictest21737-21sed19:45:241
3179199170,16cyclictest1109-21cron22:05:011
3179199170,16cyclictest11027-21needreboot20:25:181
31790991715,1cyclictest0-21swapper/021:45:530
31790991715,1cyclictest0-21swapper/021:30:230
31790991714,2cyclictest466-21cat23:55:220
31790991714,2cyclictest3983-21H222:10:210
31790991714,2cyclictest30570-21df22:55:130
31790991714,2cyclictest3026-21postgres00:16:210
31790991714,2cyclictest15379-21https22:30:010
31790991714,2cyclictest14743-21cat19:35:130
31790991714,1cyclictest3976-21H222:10:210
31790991713,1cyclictest0-21swapper/019:53:360
3179099171,1cyclictest0-21swapper/022:00:120
3179099170,2cyclictest3985-21H222:10:210
3179099170,2cyclictest3983-21H222:10:210
3179099170,2cyclictest28867-21/usr/sbin/munin20:00:160
3179099170,2cyclictest28867-21/usr/sbin/munin20:00:150
3179099170,2cyclictest28339-21sed22:50:220
3179099170,2cyclictest2345-21timerwakeupswit23:00:210
3179099170,2cyclictest17305-21cpuspeed_turbos19:40:140
3179099170,2cyclictest11349-21ps22:20:200
3179099170,16cyclictest4035-21H222:10:210
3179099170,16cyclictest3989-21H222:10:210
3179099170,16cyclictest3979-21H222:10:210
3179099170,16cyclictest30548-21ntp_offset21:00:200
3179099170,16cyclictest25769-21expr21:50:170
3179099170,16cyclictest24071-21missed_timers23:40:180
3179099170,16cyclictest14778-21cut23:25:130
3179099170,16cyclictest14496-21snapd20:28:080
3179099170,16cyclictest14495-21snapd22:45:270
3179099170,16cyclictest13125-21grep23:20:190
3179099170,16cyclictest0-21swapper/019:27:160
3179099170,15cyclictest3987-21H222:10:210
3179099170,15cyclictest3985-21H222:10:210
31792991614,1cyclictest0-21swapper/221:50:162
3179299160,1cyclictest0-21swapper/223:20:182
3179299160,1cyclictest0-21swapper/219:20:132
3179299160,15cyclictest3991-21H222:10:212
3179299160,15cyclictest0-21swapper/220:10:132
31791991615,1cyclictest21-21ksoftirqd/100:25:041
31791991613,2cyclictest19566-21latency_hist19:45:011
31791991613,2cyclictest11863-21apt23:20:131
3179099160,15cyclictest20336-21expr23:35:140
3179099160,15cyclictest0-21swapper/022:05:200
3179099160,15cyclictest0-21swapper/021:06:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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