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2026-05-04 - 05:24
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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 Mon May 04, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2788099245,11cyclictest0-21swapper/122:50:191
27883992321,0cyclictest0-21swapper/222:25:142
27880992314,0cyclictest0-21swapper/123:43:421
2787999233,19cyclictest0-21swapper/000:05:000
2787999230,22cyclictest0-21swapper/021:09:030
27880992213,0cyclictest21-21ksoftirqd/123:46:521
2788099220,18cyclictest0-21swapper/123:56:261
2788399212,3cyclictest0-21swapper/221:41:092
2788399212,3cyclictest0-21swapper/221:41:082
2788399210,3cyclictest0-21swapper/220:38:212
2788399210,20cyclictest0-21swapper/221:55:182
2788099216,14cyclictest0-21swapper/119:25:191
27880992117,3cyclictest25845-21kernelversion23:50:171
2788399206,13cyclictest0-21swapper/219:30:182
27883992013,5cyclictest0-21swapper/200:38:572
27880992017,2cyclictest1856-21systemd-udevd21:44:511
27880992017,2cyclictest1856-21systemd-udevd21:44:511
2788099201,18cyclictest9933-21nfsd420:30:191
27879992016,1cyclictest0-21swapper/022:20:540
27879992014,3cyclictest0-21swapper/020:25:170
27879992012,3cyclictest0-21swapper/020:22:170
2787999201,1cyclictest0-21swapper/023:50:570
2787999200,18cyclictest0-21swapper/019:41:160
2788399194,1cyclictest0-21swapper/223:58:112
2788399190,3cyclictest29404-21nfsd419:10:162
2788399190,2cyclictest1976-21tr19:20:142
27880991915,3cyclictest0-21swapper/123:05:261
27879991917,1cyclictest0-21swapper/020:35:210
27879991916,0cyclictest0-21swapper/000:21:120
27879991915,3cyclictest0-21swapper/023:19:580
2787999190,3cyclictest0-21swapper/020:00:140
2787999190,18cyclictest14284-21seq22:32:040
2787999190,15cyclictest25665-21latency_hist22:55:000
2788399182,15cyclictest17198-21cpuspeed_turbos20:45:142
27883991816,1cyclictest31511-21timerandwakeup20:10:222
27883991815,2cyclictest16676-21latency_hist20:45:012
27883991814,3cyclictest27310-21http23:55:002
2788399181,16cyclictest20516-21grep23:40:212
2788399180,3cyclictest8590-21latency_hist20:30:022
2788399180,2cyclictest0-21swapper/221:20:142
2788399180,1cyclictest0-21swapper/222:00:132
2788399180,17cyclictest8328-21grep00:15:132
27880991816,1cyclictest10252-21cron23:25:001
27880991816,1cyclictest0-21swapper/121:50:281
27880991815,1cyclictest0-21swapper/119:36:211
27880991814,3cyclictest29138-21sort20:09:001
27880991814,3cyclictest17767-21wc22:40:011
27880991814,3cyclictest1351-21lxd00:32:341
27880991814,3cyclictest0-21swapper/121:55:131
2787999182,15cyclictest23257-21which20:55:140
2787999182,15cyclictest11867-21systemctl19:35:220
27879991818,0cyclictest0-21swapper/000:05:220
27879991816,1cyclictest9-21ksoftirqd/020:30:190
27879991816,1cyclictest4623-21gpg-connect-age21:20:020
27879991816,1cyclictest0-21swapper/023:40:140
27879991816,1cyclictest0-21swapper/022:10:140
27879991815,2cyclictest8224-21cstates23:20:130
27879991814,3cyclictest1333-21perf19:20:010
27879991814,3cyclictest0-21swapper/021:42:350
27879991814,3cyclictest0-21swapper/021:42:340
27879991813,1cyclictest0-21swapper/023:00:170
2787999180,3cyclictest28431-21perf23:00:000
27883991715,1cyclictest20639-21cpu22:45:132
27883991714,2cyclictest8420-21runrttasks22:21:542
27883991714,2cyclictest4763-21cat23:14:552
27883991714,2cyclictest441-21expr20:15:132
27883991714,2cyclictest4190-21ls20:20:172
27883991714,2cyclictest23827-21cstates22:50:132
27883991714,2cyclictest22111-21expr21:50:132
27883991714,2cyclictest1962-21ntp_states22:10:182
27883991714,2cyclictest19126-21expr19:50:142
27883991714,2cyclictest18601-21cron23:40:002
27883991714,2cyclictest15859-21chrt21:39:522
27883991714,2cyclictest12919-21munin-run21:35:012
2788399171,15cyclictest20142-21missed_timers21:45:172
2788399170,2cyclictest7317-21sshd23:17:352
2788399170,2cyclictest6902-21chrt19:27:052
2788399170,2cyclictest32436-21latency_hist22:10:002
2788399170,2cyclictest25291-21apache_processe21:00:102
2788399170,2cyclictest20139-21chrt22:44:472
2788399170,2cyclictest17364-21chrt22:39:202
2788399170,2cyclictest1300-21lxd20:06:502
2788399170,2cyclictest11332-21sed20:35:012
2788399170,16cyclictest7628-21grep21:25:122
2788399170,16cyclictest5930-21munin-run22:20:012
2788399170,16cyclictest3344-21sort21:15:212
2788399170,16cyclictest32604-21cat00:00:232
2788399170,16cyclictest28038-21apache_volume21:05:142
2788399170,16cyclictest26762-21cat20:05:012
2788399170,16cyclictest26283-21grep22:55:132
2788399170,16cyclictest24145-21vmstat23:45:222
2788399170,16cyclictest23904-21ntp_kernel_err20:55:182
2788399170,16cyclictest21030-21nfsd420:50:182
2788399170,16cyclictest16562-21fschecks_count00:30:142
2788399170,16cyclictest15930-21postgres19:45:132
2788399170,16cyclictest1523-21lxd00:06:342
2788399170,16cyclictest14608-21nvmesmart_nvme019:40:192
2788399170,16cyclictest13675-21proc_pri22:30:202
2788399170,16cyclictest0-21swapper/223:20:122
2788399170,16cyclictest0-21swapper/200:10:192
27880991715,1cyclictest0-21swapper/120:21:091
27880991714,2cyclictest399-20systemd-journal20:45:021
27880991714,2cyclictest338-21wc19:15:191
27880991714,2cyclictest30171-21expr22:05:141
27880991714,2cyclictest2069-21systemd-udevd22:40:521
27880991714,2cyclictest1085-21gdbus00:25:201
27880991713,3cyclictest3053-21systemd-logind21:18:521
27880991713,3cyclictest19275-21fschecks_count00:35:151
2788099171,15cyclictest0-21swapper/119:10:121
27880991710,6cyclictest870-21systemd-logind00:06:521
2788099170,2cyclictest863-21avahi-daemon23:30:201
2788099170,2cyclictest6966-21python300:15:001
2788099170,2cyclictest3053-21systemd-logind21:36:521
2788099170,2cyclictest1829-21systemd-journal23:17:351
2788099170,2cyclictest12646-21python321:35:001
2788099170,16cyclictest9220-21pzem_energy00:15:191
2788099170,16cyclictest843-21systemd-network23:35:091
2788099170,16cyclictest455-21plymouthd20:50:141
2788099170,16cyclictest2069-21systemd-udevd22:10:511
2788099170,16cyclictest1526-21lxd00:20:341
2788099170,16cyclictest14346-21head19:40:191
2788099170,16cyclictest1178-21missed_timers20:15:181
2788099170,16cyclictest10096-21fschecks_count22:25:131
27879991715,1cyclictest31291-21expr21:10:130
27879991715,1cyclictest17453-21expr20:45:140
27879991715,1cyclictest0-21swapper/021:45:130
27879991714,2cyclictest9772-21expr22:25:130
27879991714,2cyclictest9661-21chrt00:15:350
27879991714,2cyclictest7902-21expr21:25:120
27879991714,2cyclictest31984-21expr23:05:140
27879991714,2cyclictest30193-21expr20:10:140
27879991714,2cyclictest28977-21if_eno119:10:150
27879991714,2cyclictest27755-21expr22:00:130
27879991714,2cyclictest27350-21cstates20:05:110
27879991714,2cyclictest25892-21ntpq21:55:180
27879991714,2cyclictest24052-21latency_hist20:00:010
27879991714,2cyclictest23522-21awk23:45:170
27879991714,2cyclictest20194-21ls20:50:150
27879991714,2cyclictest15167-21chrt00:25:450
27879991714,2cyclictest14495-21snapd23:37:580
27879991714,2cyclictest13465-21grep23:30:120
2787999171,1cyclictest0-21swapper/021:15:130
2787999171,15cyclictest19520-21sed22:40:210
2787999170,2cyclictest9171-21swap19:30:210
2787999170,2cyclictest5808-21awk00:10:200
2787999170,2cyclictest1750-21systemctl20:15:230
2787999170,1cyclictest0-21swapper/022:16:220
2787999170,1cyclictest0-21swapper/021:50:140
2787999170,16cyclictest32384-21chrt22:09:210
2787999170,16cyclictest28556-21cstates23:55:140
2787999170,16cyclictest26831-21pzem_power21:00:190
2787999170,16cyclictest2158-21apache_accesses23:10:100
2787999170,16cyclictest19204-21cat00:35:140
2787999170,16cyclictest16591-21tune2fs19:45:150
2787999170,16cyclictest15701-21sessionclean21:39:000
2787999170,16cyclictest15461-21expr22:35:150
2787999170,16cyclictest11675-21nvmesmart_nvme021:30:190
2787999170,16cyclictest11337-21grep23:25:140
2787999170,16cyclictest0-21swapper/019:25:440
2788399168,4cyclictest0-21swapper/200:25:122
27883991614,1cyclictest0-21swapper/219:35:152
2788399160,2cyclictest21343-21/usr/sbin/munin19:55:162
2788399160,1cyclictest0-21swapper/221:10:142
2788399160,15cyclictest31329-21apache_volume19:15:122
2788399160,15cyclictest28849-21apache_volume23:00:112
2788399160,15cyclictest13385-21/usr/sbin/munin23:30:152
2788399160,15cyclictest0-21swapper/223:25:172
2788399160,15cyclictest0-21swapper/200:20:142
27880991614,1cyclictest7551-21dpkg21:25:111
27880991614,1cyclictest12352-21expr22:30:141
27880991614,1cyclictest0-21swapper/123:10:131
27880991614,1cyclictest0-21swapper/120:40:011
27880991614,1cyclictest0-21swapper/120:25:151
27880991614,1cyclictest0-21swapper/119:50:001
27880991614,1cyclictest0-21swapper/119:30:131
2788099161,1cyclictest21-21ksoftirqd/123:25:141
2788099160,2cyclictest30811-21apache_accesses00:00:111
2788099160,1cyclictest7262-21sed21:25:011
2788099160,1cyclictest3440-21apt-get22:15:111
2788099160,1cyclictest0-21swapper/121:45:171
2788099160,15cyclictest870-21systemd-logind19:58:531
2788099160,15cyclictest7571-21awk22:20:171
2788099160,15cyclictest26758-21proc_pri21:00:191
2788099160,15cyclictest25061-21latency_hist21:00:011
2788099160,15cyclictest20686-21cpuspeed_turbos22:45:141
2788099160,15cyclictest0-21swapper/123:00:151
2788099160,15cyclictest0-21swapper/122:55:131
2788099160,15cyclictest0-21swapper/121:05:151
2788099160,15cyclictest0-21swapper/120:40:121
2788099160,15cyclictest0-21swapper/120:10:151
2788099160,15cyclictest0-21swapper/120:00:131
2788099160,15cyclictest0-21swapper/119:25:001
27879991614,1cyclictest18756-21expr19:50:130
27879991614,1cyclictest14884-21expr20:40:130
27879991614,1cyclictest0-21swapper/022:45:150
2787999160,15cyclictest0-21swapper/000:35:010
27880991512,2cyclictest20520-21ls19:50:211
2788099150,1cyclictest31729-21if_enp1s021:10:151
2788099150,14cyclictest0-21swapper/122:00:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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