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2026-05-28 - 04:43
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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 100 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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