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2025-12-08 - 13:16
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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 792 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
1868991714,2cyclictest4532-21H212:26:331
1868991714,2cyclictest4528-21H212:26:331
1868991714,2cyclictest30001-21snapd00:36:481
1868991714,2cyclictest17102-21apache_processe21:30:141
1868991714,2cyclictest17001-21/usr/sbin/munin20:30:201
1868991714,2cyclictest14708-21timerwakeupswit20:25:231
1868991713,3cyclictest881-21avahi-daemon00:25:241
1868991713,3cyclictest4528-21H212:26:331
1868991712,2cyclictest4581-21H212:26:331
186899170,2cyclictest7988-21smtp19:19:341
186899170,2cyclictest4975-21cpuspeed_turbos22:05:151
186899170,2cyclictest4593-21H212:26:331
186899170,2cyclictest4581-21H212:26:331
186899170,2cyclictest4528-21H212:26:331
186899170,2cyclictest28846-21nvmesmart_nvme022:45:201
186899170,2cyclictest25526-21tr19:50:161
186899170,2cyclictest18330-21chrt22:25:551
186899170,2cyclictest1798-21systemd22:17:081
186899170,2cyclictest16565-21cat00:20:121
186899170,2cyclictest1374-21munin-node21:15:121
186899170,2cyclictest11609-21expr21:20:161
186899170,1cyclictest4530-21H212:26:331
186899170,1cyclictest0-21swapper/122:53:221
186899170,1cyclictest0-21swapper/122:13:361
186899170,16cyclictest7296-21snapd23:41:571
186899170,16cyclictest4538-21H212:26:331
186899170,16cyclictest4532-21H212:26:331
186899170,16cyclictest4018-21taskset20:09:401
186899170,16cyclictest20996-21latency_hist20:40:011
186899170,16cyclictest2049-21systemd-journal22:31:171
186899170,16cyclictest17025-21taskset19:35:091
186899170,16cyclictest0-21swapper/121:36:271
186899170,15cyclictest4538-21H212:26:331
186899170,15cyclictest4534-21H212:26:331
186799173,0cyclictest1086-21snmpd23:11:360
1867991715,1cyclictest0-21swapper/020:16:470
1867991714,2cyclictest4593-21H212:26:330
1867991714,2cyclictest4593-21H212:26:330
1867991714,2cyclictest4593-21H212:26:330
1867991714,2cyclictest4581-21H212:26:330
1867991714,2cyclictest4581-21H212:26:330
1867991714,2cyclictest4581-21H212:26:330
1867991714,2cyclictest31408-21cpuspeed_turbos23:50:150
1867991714,2cyclictest27306-21ls19:50:250
1867991714,2cyclictest2559-21nfsd420:05:190
1867991714,2cyclictest20090-21latency_hist23:30:000
1867991714,2cyclictest1895-21systemd-udevd22:05:080
1867991714,2cyclictest12693-21timerwakeupswit22:15:220
1867991713,2cyclictest4526-21H212:26:330
1867991713,2cyclictest4526-21H212:26:330
186799170,2cyclictest4530-21H212:26:330
186799170,2cyclictest25833-21gpgv21:45:020
186799170,2cyclictest20374-21cut23:30:150
186799170,1cyclictest0-21swapper/020:22:500
186799170,16cyclictest9062-21df_inode19:20:160
186799170,16cyclictest7643-21ls00:05:130
186799170,16cyclictest6998-21chrt00:03:090
186799170,16cyclictest6687-21expr23:05:200
186799170,16cyclictest5039-21ntp_kernel_err23:00:190
186799170,16cyclictest4593-21H212:26:330
186799170,16cyclictest4534-21H212:26:330
186799170,16cyclictest4530-21H212:26:330
186799170,16cyclictest4526-21H212:26:330
186799170,16cyclictest4523-21H212:26:330
186799170,16cyclictest4445-21taskset19:11:170
186799170,16cyclictest4113-21nfsd421:05:210
186799170,16cyclictest3079-21gmain19:37:480
186799170,16cyclictest29997-21snapd23:23:570
186799170,16cyclictest15572-21chrt22:20:260
186799170,16cyclictest14784-21cat21:25:150
186799170,16cyclictest1059-21cups-browsed19:25:250
186799170,15cyclictest4534-21H212:26:330
1869991614,1cyclictest32506-21expr21:00:162
1869991614,1cyclictest0-21swapper/220:35:202
1869991614,1cyclictest0-21swapper/200:15:162
1869991613,2cyclictest7670-21chrt19:15:262
186999160,2cyclictest19616-21ls22:30:162
186999160,1cyclictest0-21swapper/221:55:152
186999160,1cyclictest0-21swapper/219:50:142
186999160,15cyclictest4526-21H212:26:332
186999160,15cyclictest23993-21cpuspeed_turbos20:45:152
186999160,15cyclictest0-21swapper/219:10:192
1868991614,1cyclictest0-21swapper/123:35:081
1868991614,1cyclictest0-21swapper/123:35:071
1868991614,1cyclictest0-21swapper/122:00:171
1868991614,1cyclictest0-21swapper/121:52:231
1868991614,1cyclictest0-21swapper/121:40:121
1868991614,1cyclictest0-21swapper/119:40:221
1868991614,1cyclictest0-21swapper/119:40:221
186899160,15cyclictest452-21/usr/sbin/munin22:55:141
186899160,15cyclictest0-21swapper/120:40:171
1867991614,1cyclictest29615-21/usr/sbin/munin20:55:160
1867991614,1cyclictest18502-21expr20:35:160
1867991614,1cyclictest0-21swapper/023:55:170
1867991614,1cyclictest0-21swapper/022:45:190
1867991614,1cyclictest0-21swapper/021:55:140
1867991614,1cyclictest0-21swapper/019:30:200
186799160,15cyclictest0-21swapper/022:00:200
186799160,15cyclictest0-21swapper/021:15:170
186799160,15cyclictest0-21swapper/020:45:200
186799160,15cyclictest0-21swapper/020:40:180
186799160,15cyclictest0-21swapper/020:10:350
1867991513,1cyclictest22582-21tune2fs00:30:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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