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2025-12-08 - 07:57
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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 Mon Dec 08, 2025 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1869992314,5cyclictest0-21swapper/200:03:082
186999230,1cyclictest0-21swapper/223:56:262
186799230,5cyclictest0-21swapper/022:14:040
186799230,5cyclictest0-21swapper/019:16:080
186999222,17cyclictest0-21swapper/222:25:002
1868992119,1cyclictest4581-21H212:26:331
1867992115,5cyclictest0-21swapper/000:25:000
186999204,15cyclictest0-21swapper/221:31:132
186899200,18cyclictest414-20systemd-journal21:03:241
1869991917,1cyclictest0-21swapper/222:02:212
186999190,18cyclictest823-21systemd-network19:34:122
186999190,16cyclictest4530-21H212:26:332
186999190,16cyclictest4528-21H212:26:332
1868991918,1cyclictest21-21ksoftirqd/121:28:581
1868991917,1cyclictest4530-21H212:26:331
1868991915,3cyclictest4523-21H212:26:331
186899191,1cyclictest111rcu_preempt19:55:421
1867991917,1cyclictest0-21swapper/021:13:100
1867991916,2cyclictest13531-21rm00:15:020
1867991914,3cyclictest31131-21grep20:00:140
1867991914,2cyclictest4534-21H212:26:330
186799190,18cyclictest823-21systemd-network21:52:370
186799190,18cyclictest0-21swapper/000:10:130
186999182,15cyclictest0-21swapper/223:43:222
1869991816,1cyclictest28-21ksoftirqd/221:17:512
1869991816,1cyclictest0-21swapper/221:14:572
1869991814,3cyclictest4526-21H212:26:332
1869991814,2cyclictest4523-21H212:26:332
186999181,1cyclictest0-21swapper/221:05:182
186999181,16cyclictest29362-21grep19:55:202
186999180,3cyclictest1299-21lxd19:24:572
186999180,2cyclictest4530-21H212:26:332
186999180,2cyclictest0-21swapper/220:06:292
186999180,1cyclictest0-21swapper/220:25:392
186999180,17cyclictest4538-21H212:26:332
186999180,17cyclictest4530-21H212:26:332
186999180,16cyclictest4528-21H212:26:332
186999180,15cyclictest4530-21H212:26:332
186899182,2cyclictest1256-21chrt21:59:371
186899182,15cyclictest4593-21H212:26:331
1868991817,1cyclictest21-21ksoftirqd/122:35:461
1868991817,1cyclictest21-21ksoftirqd/119:32:501
1868991817,1cyclictest21-21ksoftirqd/100:04:131
1868991815,2cyclictest7710-21vmstat21:10:231
1868991814,3cyclictest5304-21latency_hist19:15:011
1868991813,2cyclictest4581-21H212:26:331
186899181,16cyclictest4530-21H212:26:331
186899180,2cyclictest4593-21H212:26:331
186899180,2cyclictest4534-21H212:26:331
186899180,2cyclictest4530-21H212:26:331
186899180,1cyclictest0-21swapper/121:07:511
186899180,16cyclictest4538-21H212:26:331
186799182,15cyclictest4593-21H212:26:330
186799182,15cyclictest0-21swapper/020:31:210
1867991815,2cyclictest16327-21/usr/sbin/munin22:25:150
1867991813,2cyclictest4581-21H212:26:330
186799180,17cyclictest4593-21H212:26:330
186799180,17cyclictest4538-21H212:26:330
186799180,17cyclictest4530-21H212:26:330
186799180,16cyclictest4526-21H212:26:330
186799180,16cyclictest2066-21proc_pri22:55:210
1869991715,1cyclictest28-21ksoftirqd/200:11:282
1869991715,1cyclictest0-21swapper/200:06:032
1869991714,2cyclictest4593-21H212:26:332
1869991714,2cyclictest4534-21H212:26:332
1869991714,2cyclictest4534-21H212:26:332
1869991714,2cyclictest4528-21H212:26:332
1869991714,2cyclictest4526-21H212:26:332
1869991714,2cyclictest22949-21cstates19:45:142
1869991714,2cyclictest12715-21processes21:20:212
1869991714,1cyclictest0-21swapper/223:20:462
186999170,2cyclictest4593-21H212:26:332
186999170,2cyclictest4538-21H212:26:332
186999170,2cyclictest4530-21H212:26:332
186999170,2cyclictest4528-21H212:26:332
186999170,2cyclictest4528-21H212:26:332
186999170,2cyclictest29683-21missed_timers23:45:172
186999170,2cyclictest2426-21cat22:55:242
186999170,2cyclictest20492-21nfsd400:25:212
186999170,2cyclictest0-21swapper/220:00:182
186999170,16cyclictest995-21irqbalance21:36:432
186999170,16cyclictest4593-21H212:26:332
186999170,16cyclictest4593-21H212:26:332
186999170,16cyclictest4538-21H212:26:332
186999170,16cyclictest4530-21H212:26:332
186999170,16cyclictest4528-21H212:26:332
186999170,16cyclictest4523-21H212:26:332
186999170,16cyclictest30001-21snapd00:39:372
186999170,16cyclictest28071-21fschecks_count22:45:152
186999170,16cyclictest18729-21switchtime19:35:222
186999170,16cyclictest17705-21expr23:25:162
186999170,16cyclictest16455-21sed20:30:172
186999170,16cyclictest13232-21nfsd423:15:182
186999170,15cyclictest3441-21gsd-color22:10:152
186999170,15cyclictest23673-21smartctl23:35:162
186999170,15cyclictest23673-21smartctl23:35:162
186899172,1cyclictest0-21swapper/100:30:431
1868991714,2cyclictest7023-21fschecks_count23:05:201
1868991714,2cyclictest5567-21timerwakeupswit23:00:231
1868991714,2cyclictest4534-21H212:26:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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