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2026-04-05 - 04:16
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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 Sun Apr 05, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2411799310,31cyclictest0-21swapper/119:10:151
24116992625,0cyclictest0-21swapper/020:55:170
2411799230,22cyclictest0-21swapper/100:00:561
2411799230,20cyclictest0-21swapper/121:06:051
24117992213,8cyclictest0-21swapper/100:14:501
2411699220,6cyclictest0-21swapper/000:32:190
2411699220,4cyclictest0-21swapper/019:19:360
2411799203,11cyclictest0-21swapper/121:45:511
2411799202,17cyclictest0-21swapper/121:14:061
2411799202,15cyclictest0-21swapper/122:01:391
24117992016,3cyclictest0-21swapper/121:36:561
2411799200,17cyclictest28404-21python322:10:011
2411699202,17cyclictest0-21swapper/022:21:080
24116992014,3cyclictest0-21swapper/023:55:190
2411899192,16cyclictest25889-21chrt23:56:372
24118991915,3cyclictest0-21swapper/220:51:242
24118991915,2cyclictest16273-21nvmesmart_nvme019:50:192
2411899191,17cyclictest6205-21cpuspeed_turbos21:30:152
2411899190,18cyclictest0-21swapper/219:38:122
2411799192,16cyclictest13133-21cat19:45:161
24117991917,1cyclictest28154-21cat19:15:171
24117991917,1cyclictest0-21swapper/121:40:131
24117991917,1cyclictest0-21swapper/120:35:171
24117991917,1cyclictest0-21swapper/119:58:531
24117991916,2cyclictest14374-21tune2fs22:40:141
24117991915,3cyclictest0-21swapper/120:20:151
24117991915,3cyclictest0-21swapper/100:31:481
24117991914,1cyclictest0-21swapper/120:04:131
2411799190,18cyclictest0-21swapper/122:55:011
2411799190,18cyclictest0-21swapper/119:25:171
2411699193,2cyclictest15072-21cron23:39:010
2411699193,2cyclictest15072-21cron23:39:010
2411699193,1cyclictest5943-21date19:35:000
2411699192,2cyclictest31582-21switchtime19:20:200
2411699192,1cyclictest0-21swapper/020:13:180
2411699190,5cyclictest0-21swapper/021:07:240
2411899182,15cyclictest855-21smartctl22:15:192
2411899182,15cyclictest0-21swapper/220:45:212
2411899181,3cyclictest0-21swapper/222:20:542
2411899180,17cyclictest17768-21cut21:50:132
2411899180,16cyclictest2007-21systemd-journal21:11:532
2411799182,15cyclictest6081-21acpi19:35:111
2411799182,15cyclictest2883-21cpuspeed_turbos00:15:131
2411799182,15cyclictest19733-21latency20:55:171
2411799182,15cyclictest0-21swapper/121:15:221
24117991816,1cyclictest0-21swapper/122:23:011
24117991815,2cyclictest9129-21dpkg19:40:011
24117991815,2cyclictest31570-21runlevel00:08:211
24117991814,3cyclictest0-21swapper/121:55:011
24117991814,3cyclictest0-21swapper/120:30:221
2411799181,16cyclictest30339-21python323:10:011
2411799181,16cyclictest24665-21awk23:00:011
2411699182,1cyclictest231582chrt23:51:370
2411699182,1cyclictest0-21swapper/021:50:010
24116991814,3cyclictest0-21swapper/020:25:220
2411699181,16cyclictest23503-21nfsd422:55:170
2411699181,16cyclictest2069-21systemd-udevd23:06:520
2411699180,2cyclictest3983-21H222:10:210
24118991715,1cyclictest0-21swapper/223:08:192
24118991715,1cyclictest0-21swapper/222:30:172
24118991715,1cyclictest0-21swapper/219:17:222
24118991714,2cyclictest3720-21cstates19:30:152
24118991714,2cyclictest32309-21acpi00:10:112
24118991714,2cyclictest25131-21hddtemp_smartct19:10:142
24118991714,2cyclictest1516-21lxd23:42:332
24118991714,2cyclictest1348-21lxd22:06:492
24118991714,2cyclictest10787-21ntpq19:40:182
2411899170,2cyclictest8068-21expr20:35:142
2411899170,2cyclictest6885-21missed_timers00:20:192
2411899170,2cyclictest5145-21cron00:17:002
2411899170,2cyclictest31431-21/usr/sbin/munin20:20:152
2411899170,2cyclictest23087-21taskset20:05:152
2411899170,2cyclictest23087-21taskset20:05:152
2411899170,2cyclictest22893-21nvmesmart_nvme021:00:212
2411899170,2cyclictest14957-21latency00:35:152
2411899170,16cyclictest7924-21grep23:25:142
2411899170,16cyclictest31377-21processes19:20:182
2411899170,16cyclictest29297-21chrt00:05:022
2411899170,16cyclictest2643-21idleruntime20:25:172
2411899170,16cyclictest24565-21ps22:00:202
2411899170,16cyclictest2367-21if_lxdbr023:15:152
2411899170,16cyclictest22276-21acpi22:55:092
2411899170,16cyclictest1851-21pzem_energy19:25:192
2411899170,16cyclictest15471-21/usr/sbin/munin21:45:162
2411899170,16cyclictest1526-21lxd23:46:342
2411899170,16cyclictest13323-21chrt00:31:452
2411899170,16cyclictest12153-21awk22:35:182
2411899170,16cyclictest12108-21sshd23:32:182
2411899170,16cyclictest10087-21pzem_power00:25:202
24117991715,1cyclictest31909-21cpuspeed_turbos22:15:131
24117991715,1cyclictest0-21swapper/122:25:131
24117991714,2cyclictest9887-21sed23:30:001
24117991714,2cyclictest8711-21/usr/sbin/munin22:30:131
24117991714,2cyclictest6317-21cstates21:30:161
24117991714,2cyclictest30516-21cut19:20:141
24117991714,2cyclictest28961-21ls20:15:131
24117991714,2cyclictest2812-21expr23:15:171
24117991714,2cyclictest27012-21missed_timers20:10:171
24117991714,2cyclictest22370-21mii-tool21:00:171
24117991714,2cyclictest2130-21seq20:25:151
24117991714,2cyclictest20752-21cstates21:55:131
24117991714,2cyclictest16411-21cstates20:50:131
24117991714,2cyclictest15381-21chrt20:47:351
24117991714,2cyclictest14862-21/usr/sbin/munin19:50:111
24117991714,2cyclictest12530-21cat23:35:001
24117991714,2cyclictest11046-21cstates22:35:131
24117991714,1cyclictest0-21swapper/123:05:151
24117991713,3cyclictest0-21swapper/123:20:201
2411799171,15cyclictest14275-21cstates00:35:121
2411799170,2cyclictest6239-21expr00:20:151
2411799170,2cyclictest32580-21apache_processe21:20:111
2411799170,2cyclictest29459-21expr22:10:131
2411799170,2cyclictest25675-21grep23:00:151
2411799170,2cyclictest16076-21cstates23:40:141
2411799170,16cyclictest8924-21expr00:25:131
2411799170,16cyclictest4703-21grep19:30:191
2411799170,16cyclictest4459-21sed21:25:181
2411799170,16cyclictest4459-21sed21:25:171
2411799170,16cyclictest25440-21mailstats23:55:211
2411799170,16cyclictest23160-21grep20:05:151
2411799170,16cyclictest23160-21grep20:05:151
2411799170,16cyclictest21347-21expr23:50:141
2411799170,16cyclictest19016-21fschecks_count23:45:141
2411799170,16cyclictest16821-21expr22:45:151
2411799170,16cyclictest16821-21expr22:45:151
2411799170,16cyclictest13285-21cstates23:35:131
2411799170,16cyclictest13285-21cstates23:35:131
2411799170,16cyclictest10953-21cat20:40:121
24116991716,1cyclictest0-21swapper/019:45:130
24116991714,2cyclictest31284-21chrt00:05:320
24116991714,2cyclictest30168-21ls21:15:140
24116991714,2cyclictest1841-21cat23:15:130
24116991714,2cyclictest17354-21ls23:40:210
24116991714,2cyclictest16998-21latency20:50:180
24116991714,2cyclictest12505-21if_err_eno121:40:150
24116991714,2cyclictest11265-21basename21:40:010
24116991714,2cyclictest10151-21lxd23:26:340
24116991713,3cyclictest26990-21grep22:05:180
24116991713,3cyclictest0-21swapper/021:50:140
24116991713,1cyclictest0-21swapper/000:15:140
2411699171,1cyclictest0-21swapper/000:00:210
2411699171,15cyclictest196922sleep019:57:200
2411699170,2cyclictest8513-21chrt20:35:160
2411699170,2cyclictest8122-21cpuspeed_turbos22:30:130
2411699170,2cyclictest6131-21expr00:20:150
2411699170,2cyclictest32760-21nfsd420:20:170
2411699170,2cyclictest32731-21cpuspeed_turbos21:20:130
2411699170,2cyclictest32715-21/usr/sbin/munin22:15:160
2411699170,2cyclictest3053-21systemd-logind20:46:520
2411699170,2cyclictest21054-21/usr/sbin/munin21:55:140
2411699170,2cyclictest20318-21chrt20:00:080
2411699170,2cyclictest15535-21grep19:50:150
2411699170,2cyclictest11292-21ls22:35:130
2411699170,16cyclictest9294-21idleruntime00:25:150
2411699170,16cyclictest7176-21sed19:35:170
2411699170,16cyclictest6795-21/usr/sbin/munin21:30:170
2411699170,16cyclictest32664-21systemctl23:10:200
2411699170,16cyclictest30389-21nfsd422:10:170
2411699170,16cyclictest28426-21nfsd421:10:190
2411699170,16cyclictest2673-21awk19:30:010
2411699170,16cyclictest20702-21latency_hist23:50:010
2411699170,16cyclictest1515-21lxd22:54:490
2411699170,16cyclictest1079-21cups-browsed22:25:190
2411699170,16cyclictest1035-21thermald19:40:210
2411699170,16cyclictest0-21swapper/021:25:140
2411699170,16cyclictest0-21swapper/021:25:130
24118991614,1cyclictest20972-21fschecks_count20:00:162
24118991614,1cyclictest12371-21fschecks_time21:40:142
24118991614,1cyclictest0-21swapper/223:50:152
24118991614,1cyclictest0-21swapper/223:20:132
24118991614,1cyclictest0-21swapper/223:10:012
24118991614,1cyclictest0-21swapper/222:45:172
24118991614,1cyclictest0-21swapper/222:45:172
24118991614,1cyclictest0-21swapper/222:10:152
24118991614,1cyclictest0-21swapper/221:05:142
24118991614,1cyclictest0-21swapper/220:55:192
24118991614,1cyclictest0-21swapper/220:10:152
24118991614,1cyclictest0-21swapper/219:45:132
24118991613,2cyclictest31208-21ntp_kernel_pll_21:15:192
2411899160,1cyclictest0-21swapper/223:35:162
2411899160,1cyclictest0-21swapper/223:35:162
2411899160,1cyclictest0-21swapper/221:55:202
2411899160,1cyclictest0-21swapper/220:40:102
2411899160,15cyclictest360-21grep21:20:122
2411899160,15cyclictest28702-21apt-get20:15:122
2411899160,15cyclictest18232-21fschecks_count19:55:142
2411899160,15cyclictest14373-21fschecks_time22:40:142
2411899160,15cyclictest10834-21master21:36:572
2411899160,15cyclictest0-21swapper/222:50:142
2411899160,15cyclictest0-21swapper/222:25:142
2411899160,15cyclictest0-21swapper/221:25:142
2411899160,15cyclictest0-21swapper/221:25:142
2411899160,15cyclictest0-21swapper/200:00:132
24116991614,1cyclictest32622-21expr00:10:130
24116991614,1cyclictest0-21swapper/023:30:130
24116991614,1cyclictest0-21swapper/022:45:130
24116991614,1cyclictest0-21swapper/022:45:130
24116991614,1cyclictest0-21swapper/022:00:130
24116991614,1cyclictest0-21swapper/020:30:090
24116991613,2cyclictest14805-21cat22:40:160
2411699160,1cyclictest0-21swapper/023:20:190
2411699160,1cyclictest0-21swapper/020:05:150
2411699160,1cyclictest0-21swapper/020:05:150
2411699160,15cyclictest0-21swapper/023:00:160
2411699160,15cyclictest0-21swapper/021:01:300
2411699160,15cyclictest0-21swapper/019:10:130
2411699160,15cyclictest0-21swapper/000:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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