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2026-06-18 - 18:36
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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 Thu Jun 18, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12508993029,1cyclictest0-21swapper/212:05:162
12503992313,10cyclictest0-21swapper/107:35:161
1249999230,5cyclictest0-21swapper/011:37:040
1249999230,5cyclictest0-21swapper/008:26:420
1249999230,18cyclictest0-21swapper/010:30:480
12503992222,0cyclictest0-21swapper/112:05:161
1250399203,16cyclictest3677-21latency_hist09:45:011
12503992016,3cyclictest22390-21cron08:25:011
1250899192,16cyclictest32733-21nfsd410:35:172
12508991917,1cyclictest0-21swapper/211:07:352
1250899190,1cyclictest0-21swapper/208:20:282
1250399193,15cyclictest0-21swapper/112:25:161
1250399192,16cyclictest10852-21nvmesmart_nvme011:50:201
1250399192,16cyclictest10852-21nvmesmart_nvme011:50:201
12503991917,1cyclictest0-21swapper/111:32:161
12503991917,1cyclictest0-21swapper/109:31:231
12503991916,2cyclictest3989-21H222:10:211
12503991916,2cyclictest24262-21cat12:15:171
1250399190,18cyclictest455-21plymouthd09:25:011
1249999194,1cyclictest0-21swapper/010:21:430
1249999193,1cyclictest12605-21cat11:55:120
1249999193,1cyclictest0-21swapper/008:08:040
1249999190,1cyclictest111rcu_preempt12:10:130
1250899183,15cyclictest28-21ksoftirqd/211:59:192
12508991816,1cyclictest0-21swapper/210:46:152
12508991815,2cyclictest3989-21H222:10:212
12508991815,2cyclictest27060-21latency08:30:152
12508991814,3cyclictest4035-21H222:10:212
1250899180,2cyclictest3991-21H222:10:212
1250899180,2cyclictest3987-21H222:10:212
1250899180,2cyclictest3987-21H222:10:212
1250899180,17cyclictest32531-21sshd11:33:382
1250899180,16cyclictest2987-21smtp11:38:042
1250399183,1cyclictest21-21ksoftirqd/112:22:241
12503991816,1cyclictest0-21swapper/109:47:001
12503991814,3cyclictest3989-21H222:10:211
12503991814,3cyclictest3989-21H222:10:211
12503991814,3cyclictest0-21swapper/111:40:171
12503991814,3cyclictest0-21swapper/109:01:511
1250399180,3cyclictest19906-21grep07:20:171
1250399180,17cyclictest0-21swapper/111:23:431
1250399180,17cyclictest0-21swapper/109:25:171
1250399180,15cyclictest3987-21H222:10:211
1250399180,15cyclictest3979-21H222:10:211
1250399180,15cyclictest0-21swapper/111:29:121
1250399180,15cyclictest0-21swapper/111:29:121
1250399180,15cyclictest0-21swapper/108:55:181
1249999183,14cyclictest9-21ksoftirqd/010:47:000
1249999182,15cyclictest4036-21H222:10:210
1249999182,15cyclictest0-21swapper/007:58:470
1249999182,15cyclictest0-21swapper/007:34:200
1249999182,15cyclictest0-21swapper/007:34:200
12499991816,1cyclictest0-21swapper/009:02:300
12499991814,3cyclictest5172-21strings11:40:170
12499991814,3cyclictest3989-21H222:10:210
12499991814,3cyclictest3989-21H222:10:210
12499991813,2cyclictest4035-21H222:10:210
1249999181,2cyclictest0-21swapper/009:25:010
1249999181,16cyclictest28944-21grep09:30:180
1249999180,16cyclictest24337-21grep12:15:180
1249999180,15cyclictest3985-21H222:10:210
1250899172,1cyclictest28-21ksoftirqd/210:56:452
1250899172,15cyclictest28-21ksoftirqd/210:42:472
12508991715,1cyclictest0-21swapper/211:40:192
12508991715,1cyclictest0-21swapper/211:00:172
12508991714,2cyclictest15529-21forks12:00:132
12508991714,2cyclictest1515-21lxd12:10:422
12508991714,2cyclictest10095-21ntp_kernel_pll_08:00:172
1250899171,15cyclictest263662sleep207:34:022
1250899171,15cyclictest263662sleep207:34:022
1250899170,2cyclictest7054-21processes08:50:182
1250899170,2cyclictest3989-21H222:10:212
1250899170,2cyclictest3987-21H222:10:212
1250899170,2cyclictest31478-21missed_timers09:35:172
1250899170,2cyclictest14511-21hddtemp_smartct09:05:152
1250899170,2cyclictest14506-21snapd08:05:142
1250899170,2cyclictest13181-21latency10:00:172
1250899170,2cyclictest11386-21vmstat11:50:232
1250899170,2cyclictest11386-21vmstat11:50:232
1250899170,2cyclictest1079-21cups-browsed07:10:202
1250899170,2cyclictest10573-21chrt08:59:402
1250899170,2cyclictest0-21swapper/210:51:032
1250899170,16cyclictest455-21plymouthd10:20:202
1250899170,16cyclictest3981-21H222:10:212
1250899170,16cyclictest3976-21H222:10:212
1250899170,16cyclictest3707-21master10:17:092
1250899170,16cyclictest3180-21cpuspeed_turbos07:50:142
1250899170,16cyclictest23910-21ls09:20:202
1250899170,16cyclictest23117-21apt-config08:25:012
1250899170,16cyclictest20964-21sendmail_mailst09:15:202
1250899170,16cyclictest19920-21awk07:20:172
1250899170,16cyclictest19898-21expr11:10:132
1250899170,16cyclictest1829-21systemd-journal10:27:392
1250899170,16cyclictest17255-21expr09:10:132
1250899170,16cyclictest15708-21awk08:10:182
1250899170,16cyclictest1267-21expr09:40:132
1250899170,16cyclictest12388-21nfsd409:00:152
1250899170,15cyclictest3985-21H222:10:212
12503991715,1cyclictest0-21swapper/110:55:211
12503991715,1cyclictest0-21swapper/110:50:061
12503991714,2cyclictest7488-21timerwakeupswit08:50:201
12503991714,2cyclictest399-20systemd-journal10:37:031
12503991714,2cyclictest3989-21H222:10:211
12503991714,2cyclictest29765-21/usr/sbin/munin07:40:121
12503991714,2cyclictest1793-21sendmail_mailtr07:45:201
12503991714,2cyclictest12934-21awk08:05:191
1250399171,15cyclictest30320-21/usr/sbin/munin09:35:151
1250399171,15cyclictest21651-21expr07:25:151
1250399171,15cyclictest20618-21nfsd409:15:181
1250399170,2cyclictest5601-21lxd08:32:421
1250399170,2cyclictest3976-21H222:10:211
1250399170,2cyclictest29606-21cat08:35:131
1250399170,2cyclictest26080-21apache_processe10:25:131
1250399170,2cyclictest21219-21fschecks_time10:15:141
1250399170,2cyclictest18431-21fschecks_count10:10:141
1250399170,2cyclictest14546-21munin-run10:05:001
1250399170,2cyclictest11772-21perf10:00:001
1250399170,16cyclictest9304-21df08:00:131
1250399170,16cyclictest9016-21cron09:55:011
1250399170,16cyclictest2542-21apache_accesses10:40:121
1250399170,16cyclictest22107-21sendmail_mailst12:10:211
1250399170,16cyclictest21351-21vmstat11:10:221
1250399170,16cyclictest18472-21chrt11:05:211
1250399170,16cyclictest15821-21nvmesmart_nvme008:10:191
1250399170,16cyclictest13779-21apache_accesses11:00:091
1250399170,16cyclictest0-21swapper/108:40:161
1250399170,16cyclictest0-21swapper/108:25:131
1250399170,15cyclictest3989-21H222:10:211
1249999172,1cyclictest0-21swapper/008:47:330
12499991715,1cyclictest9536-21nfsd408:55:180
12499991714,2cyclictest7884-21cron08:55:010
12499991714,2cyclictest6723-21apache_processe11:45:110
12499991714,2cyclictest3991-21H222:10:210
12499991714,2cyclictest16289-21munin-run11:05:010
12499991713,3cyclictest4099-21H222:10:210
12499991713,3cyclictest4099-21H222:10:210
12499991713,3cyclictest3979-21H222:10:210
1249999171,15cyclictest29643-21iwlist12:25:160
1249999170,2cyclictest651-21sendmail_mailst10:35:200
1249999170,2cyclictest26599-21switchtime09:25:210
1249999170,2cyclictest21218-21fschecks_time10:15:140
1249999170,2cyclictest18048-21expr10:10:130
1249999170,2cyclictest1522-21lxd08:32:420
1249999170,2cyclictest12537-21expr10:00:140
1249999170,16cyclictest9367-21latency_hist09:55:010
1249999170,16cyclictest4099-21H222:10:210
1249999170,16cyclictest3979-21H222:10:210
1249999170,16cyclictest3976-21H222:10:210
1249999170,16cyclictest30758-21expr11:30:140
1249999170,16cyclictest22136-21apache_processe11:15:100
1249999170,16cyclictest20272-21if_err_lxdbr009:15:160
1249999170,16cyclictest18372-21hddtemp_smartct12:05:150
1249999170,16cyclictest15942-21apache_processe07:15:120
1249999170,16cyclictest15200-21cat10:05:130
1249999170,15cyclictest3987-21H222:10:210
1249999170,15cyclictest0-21swapper/011:10:120
12508991614,1cyclictest4253-21cat09:45:122
12508991614,1cyclictest16862-21kernelversion07:15:162
12508991614,1cyclictest0-21swapper/207:55:192
1250899160,1cyclictest31571-21/usr/sbin/munin12:30:122
1250899160,1cyclictest3058-21rs:main2
1250899160,15cyclictest6700-21/usr/sbin/munin09:50:112
1250899160,15cyclictest455-21plymouthd09:30:152
1250899160,15cyclictest3634-21if_err_enp1s008:45:152
1250899160,15cyclictest32485-21/usr/sbin/munin07:45:122
1250899160,15cyclictest30516-21http_loadtime07:40:162
1250899160,15cyclictest26857-21/usr/sbin/munin07:35:122
1250899160,15cyclictest18522-21grep10:10:142
1250899160,15cyclictest0-21swapper/211:15:162
1250899160,15cyclictest0-21swapper/210:05:142
1250899160,15cyclictest0-21swapper/209:55:152
1250899160,15cyclictest0-21swapper/209:25:112
1250899160,15cyclictest0-21swapper/208:35:132
1250899160,15cyclictest0-21swapper/207:25:122
12503991614,1cyclictest3991-21H222:10:211
12503991614,1cyclictest23305-21apache_accesses10:20:101
12503991614,1cyclictest0-21swapper/108:45:191
12503991613,2cyclictest3985-21H222:10:211
12503991613,2cyclictest17628-21expr08:15:131
12503991613,2cyclictest14276-21cat09:05:131
12503991613,2cyclictest12433-21cstates11:55:121
1250399160,2cyclictest16480-21sed10:05:201
1250399160,1cyclictest0-21swapper/107:50:181
1250399160,1cyclictest0-21swapper/107:30:131
1250399160,1cyclictest0-21swapper/107:30:131
1250399160,15cyclictest17218-21expr09:10:131
1250399160,15cyclictest15130-21apt-get07:15:031
12499991614,1cyclictest27531-21fschecks_time07:35:150
12499991614,1cyclictest219212sleep008:21:260
12499991614,1cyclictest0-21swapper/009:35:190
12499991614,1cyclictest0-21swapper/007:40:140
12499991614,1cyclictest0-21swapper/007:20:120
12499991613,2cyclictest14567-21cut08:10:130
12499991613,2cyclictest0-21swapper/007:10:110
1249999160,1cyclictest0-21swapper/009:45:120
1249999160,15cyclictest13792-21apache_volume09:05:110
1249999160,15cyclictest0-21swapper/010:25:220
1249999160,15cyclictest0-21swapper/009:55:220
1249999160,15cyclictest0-21swapper/009:10:200
1249999160,15cyclictest0-21swapper/008:35:110
1249999160,15cyclictest0-21swapper/008:15:170
1249999160,15cyclictest0-21swapper/008:00:170
1249999160,15cyclictest0-21swapper/007:50:180
12499991513,1cyclictest0-21swapper/009:40:150
1249999150,1cyclictest0-21swapper/008:40:110
1249999150,1cyclictest0-21swapper/007:45:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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