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2026-05-28 - 09:19
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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 May 28, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16504992928,1cyclictest0-21swapper/200:00:122
1650099288,5cyclictest47252chrt21:35:521
1650099270,6cyclictest0-21swapper/119:17:081
1650099240,2cyclictest28526-21nfsd420:25:161
1650099240,22cyclictest0-21swapper/123:10:161
1650099240,18cyclictest12908-21sort22:50:141
1650099232,1cyclictest0-21swapper/122:56:221
1650099232,15cyclictest189822chrt23:56:491
16500992314,8cyclictest5660-21dpkg21:40:111
16500992313,8cyclictest4266-21needreboot23:30:161
1650099230,2cyclictest9718-21df20:50:151
1650099230,2cyclictest4960-21grep20:40:171
1650099230,22cyclictest5622-21hddtemp_smartct00:30:141
1650099230,18cyclictest0-21swapper/121:25:191
1650099230,17cyclictest17563-21awk19:10:151
1650099230,16cyclictest12124-21cat21:50:151
16504992219,2cyclictest880-21rs:main2
16504992212,10cyclictest0-21swapper/222:35:162
16500992214,7cyclictest8782-21needreboot00:35:171
16500992214,7cyclictest17453-21http21:05:031
16500992214,4cyclictest0-21swapper/123:15:131
1650099220,2cyclictest2724-21ntp_kernel_pll_00:25:181
1650099220,2cyclictest20640-21cron21:10:001
1650099220,21cyclictest26796-21timerwakeupswit22:15:211
1650099220,21cyclictest14162-21cat21:55:131
1650099220,21cyclictest13318-21missed_timers20:55:161
1650099220,21cyclictest10009-21expr22:45:131
1650099220,21cyclictest0-21swapper/100:19:041
1650099220,21cyclictest0-21swapper/100:19:031
1650099220,20cyclictest0-21swapper/122:30:161
1650099220,16cyclictest5102-21awk22:35:181
1650099220,16cyclictest22631-21/usr/sbin/munin19:20:131
1650099220,16cyclictest2166-21expr19:40:141
1650099220,15cyclictest0-21swapper/123:00:121
16500992114,6cyclictest3351-21lxd23:06:511
16500992114,6cyclictest30928-21if_lxdbr020:30:171
16500992114,6cyclictest0-21swapper/122:05:151
16500992114,6cyclictest0-21swapper/121:30:111
16500992113,7cyclictest27713-21chrt00:14:501
16500992113,7cyclictest10691-21perf21:50:011
1650099210,2cyclictest15585-21munin-run20:05:011
1650099210,20cyclictest0-21swapper/123:25:201
1650099210,20cyclictest0-21swapper/122:00:101
1650099210,1cyclictest993-21dbus-daemon23:45:201
1650099210,1cyclictest9484-21ls23:40:161
1650099210,1cyclictest0-21swapper/123:20:111
1650099210,1cyclictest0-21swapper/122:25:141
1650099210,15cyclictest0-21swapper/120:45:201
1650099210,15cyclictest0-21swapper/119:54:491
1650499203,16cyclictest3053-21systemd-logind21:28:522
1650499200,2cyclictest29197-21dump-pmu-power23:20:012
16500992014,5cyclictest0-21swapper/120:05:151
16500992013,6cyclictest3450-21gsd-color21:20:121
16500992013,6cyclictest25990-21ntp_states20:20:181
16500992012,7cyclictest6348-21grep19:45:191
1650099200,1cyclictest0-21swapper/121:00:141
1650099200,19cyclictest0-21swapper/122:45:021
1650099200,19cyclictest0-21swapper/120:10:141
1650099200,19cyclictest0-21swapper/119:55:161
1650099200,19cyclictest0-21swapper/119:35:141
1650099200,19cyclictest0-21swapper/119:30:141
1650099200,19cyclictest0-21swapper/119:25:171
1650099200,15cyclictest234742sleep120:16:321
1650099200,15cyclictest0-21swapper/123:35:181
1650099200,15cyclictest0-21swapper/122:25:011
1650099200,0cyclictest0-21swapper/100:23:091
16494992016,1cyclictest0-21swapper/020:54:380
16494992014,1cyclictest0-21swapper/021:39:000
1650499193,15cyclictest23370-21who20:15:222
16504991917,1cyclictest0-21swapper/200:36:192
16504991916,2cyclictest30530-21grep22:25:122
1650499191,3cyclictest0-21swapper/200:10:182
1650499190,3cyclictest17963-21ntp_kernel_pll_22:00:172
1650499190,1cyclictest0-21swapper/222:55:422
1650499190,18cyclictest0-21swapper/221:24:362
16500991914,4cyclictest0-21swapper/121:15:141
16500991914,4cyclictest0-21swapper/121:15:131
16500991913,5cyclictest21277-21/usr/sbin/munin00:00:211
16500991912,6cyclictest1475-21cat20:35:171
1650099190,18cyclictest0-21swapper/100:05:131
1650099190,14cyclictest0-21swapper/122:10:121
16494991915,1cyclictest0-21swapper/000:09:490
1650499182,2cyclictest20057-21wc21:05:212
1650499182,15cyclictest0-21swapper/221:59:442
16504991816,1cyclictest28-21ksoftirqd/222:05:352
16504991816,1cyclictest0-21swapper/221:00:342
16504991815,2cyclictest25357-21mailstats21:15:222
16504991815,2cyclictest25357-21mailstats21:15:212
16504991813,3cyclictest28922-21nfsd422:20:172
1650499180,2cyclictest18741-21master19:10:432
1650499180,1cyclictest111rcu_preempt23:05:172
1650099180,0cyclictest0-21swapper/123:50:191
16494991818,0cyclictest0-21swapper/020:40:150
16494991815,2cyclictest23977-21nfsd419:20:170
16494991814,3cyclictest21827-21turbostat19:20:020
16494991812,3cyclictest0-21swapper/023:20:310
1649499181,16cyclictest29503-21sed23:20:000
16494991810,4cyclictest0-21swapper/023:56:590
1649499180,3cyclictest26051-21wc23:15:000
1649499180,17cyclictest31313-21grep20:30:180
1649499180,15cyclictest0-21swapper/023:30:130
1650499172,15cyclictest0-21swapper/223:30:142
16504991715,1cyclictest0-21swapper/221:35:142
16504991714,2cyclictest7165-21pzem_current21:40:202
16504991714,2cyclictest4615-21latency_hist19:45:012
16504991714,2cyclictest3981-21H222:10:212
16504991714,2cyclictest28314-21expr00:15:132
16504991714,2cyclictest28314-21expr00:15:132
16504991714,2cyclictest24119-21cat00:05:222
16504991714,2cyclictest0-21swapper/221:45:172
16504991714,2cyclictest0-21swapper/220:55:122
16504991712,4cyclictest870-21systemd-logind19:56:522
1650499171,1cyclictest8133-21switchtime20:45:212
1650499171,1cyclictest0-21swapper/221:50:152
1650499171,1cyclictest0-21swapper/220:35:172
1650499171,0cyclictest0-21swapper/222:45:142
1650499170,2cyclictest426-21systemd-udevd00:23:522
1650499170,2cyclictest3976-21H222:10:212
1650499170,2cyclictest25503-21df22:15:142
1650499170,2cyclictest22944-21idleruntime22:10:142
1650499170,2cyclictest17605-21fschecks_time23:55:142
1650499170,2cyclictest11538-21python320:55:012
1650499170,1cyclictest0-21swapper/223:25:192
1650499170,16cyclictest9618-21postgres19:51:142
1650499170,16cyclictest7222-21cat23:35:202
1650499170,16cyclictest5630-21idleruntime19:45:152
1650499170,16cyclictest3985-21H222:10:212
1650499170,16cyclictest30999-21ls20:30:182
1650499170,16cyclictest20115-21ntp_states20:10:202
1650499170,16cyclictest19813-21cat19:15:142
1650499170,16cyclictest13538-21expr22:50:182
1650499170,16cyclictest0-21swapper/222:30:172
1650499170,13cyclictest0-21swapper/220:25:132
1649499172,1cyclictest0-21swapper/019:56:080
16494991714,2cyclictest7870-21chrt23:36:370
16494991714,2cyclictest6783-21apache_accesses22:40:110
16494991714,2cyclictest4865-21/usr/sbin/munin19:45:120
16494991714,2cyclictest3450-21gsd-color20:45:100
16494991714,2cyclictest32336-21/usr/sbin/munin23:25:150
16494991714,2cyclictest30315-21memory21:25:150
16494991714,2cyclictest28886-21systemctl20:25:190
16494991714,2cyclictest26013-21cat22:15:170
16494991714,2cyclictest24950-21expr20:20:130
16494991714,2cyclictest20730-21smartctl22:05:200
16494991714,2cyclictest19229-21memory21:05:160
16494991714,2cyclictest1390-21df_inode22:30:120
1649499170,2cyclictest4023-21PluginScanner20:03:520
1649499170,2cyclictest3991-21H222:10:210
1649499170,2cyclictest22200-21apache_accesses22:10:110
1649499170,2cyclictest11037-21pzem22:45:200
1649499170,2cyclictest0-21swapper/023:00:130
1649499170,16cyclictest8047-21cat00:35:130
1649499170,16cyclictest6734-21cut22:40:010
1649499170,16cyclictest4913-21apache_processe00:30:120
1649499170,16cyclictest3983-21H222:10:210
1649499170,16cyclictest28682-21cupsd22:50:150
1649499170,16cyclictest27687-21dpkg22:20:110
1649499170,16cyclictest26879-21uname19:25:190
1649499170,16cyclictest22670-21cut20:15:180
1649499170,16cyclictest21773-21hddtemp_smartct21:10:150
1649499170,16cyclictest19698-21apache_volume00:00:130
1649499170,16cyclictest1918-21df00:25:130
1649499170,16cyclictest17061-21expr22:00:120
1649499170,16cyclictest15949-21irqstats21:00:170
1649499170,16cyclictest13812-21apache_accesses21:55:110
1649499170,16cyclictest12771-21awk23:45:180
1649499170,16cyclictest11997-21/usr/sbin/munin21:50:160
1649499170,16cyclictest1035-21thermald00:10:200
16504991614,1cyclictest0-21swapper/223:10:012
16504991614,1cyclictest0-21swapper/221:30:102
16504991614,1cyclictest0-21swapper/221:10:132
16504991614,1cyclictest0-21swapper/220:05:132
16504991614,1cyclictest0-21swapper/219:20:022
1650499160,2cyclictest13778-21which20:00:152
1650499160,1cyclictest3987-21H222:10:212
1650499160,1cyclictest0-21swapper/223:20:122
1650499160,1cyclictest0-21swapper/219:25:172
1650499160,16cyclictest0-21swapper/223:40:142
1650499160,15cyclictest5817-21irqstats00:30:152
1650499160,15cyclictest30803-21/usr/sbin/munin19:35:132
1650499160,15cyclictest3053-21systemd-logind19:30:522
1650499160,15cyclictest271rcuc/200:25:122
1650499160,15cyclictest0-21swapper/223:50:162
16494991614,1cyclictest0-21swapper/020:55:020
16494991614,1cyclictest0-21swapper/020:05:130
16494991614,1cyclictest0-21swapper/019:50:120
16494991614,1cyclictest0-21swapper/000:20:120
16494991613,2cyclictest20459-21apache_volume23:05:120
1649499160,2cyclictest14175-21apache_processe23:50:100
1649499160,1cyclictest1575-21gpgv19:40:010
1649499160,1cyclictest0-21swapper/020:10:170
1649499160,15cyclictest311-21apache_volume20:35:120
1649499160,15cyclictest31115-21expr19:35:140
1649499160,15cyclictest28737-21df00:15:140
1649499160,15cyclictest28737-21df00:15:130
1649499160,15cyclictest27117-21df21:20:130
1649499160,15cyclictest0-21swapper/022:25:140
1649499160,15cyclictest0-21swapper/021:40:120
1649499160,15cyclictest0-21swapper/021:30:130
1649499160,15cyclictest0-21swapper/021:15:140
1649499160,15cyclictest0-21swapper/021:15:140
1649499160,15cyclictest0-21swapper/019:30:150
1649499150,14cyclictest0-21swapper/022:55:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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