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2025-12-28 - 10:57
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Sun Dec 28, 2025 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12645992414,0cyclictest0-21swapper/121:49:231
1264599230,7cyclictest0-21swapper/119:29:511
1264599220,4cyclictest0-21swapper/120:17:251
1264699208,11cyclictest0-21swapper/222:45:192
1264699204,15cyclictest0-21swapper/223:28:182
12646992018,1cyclictest0-21swapper/219:25:512
12646992016,3cyclictest0-21swapper/221:00:022
12646992016,3cyclictest0-21swapper/200:07:272
12646992010,0cyclictest0-21swapper/219:50:172
1264699200,4cyclictest11960-21perf23:55:012
1264699200,1cyclictest0-21swapper/222:30:002
1264599204,15cyclictest21-21ksoftirqd/120:05:211
1264599200,5cyclictest0-21swapper/121:01:131
12644992016,3cyclictest0-21swapper/023:14:320
12644992016,3cyclictest0-21swapper/020:21:000
12646991916,2cyclictest4100-21H222:10:212
12646991916,2cyclictest26403-21idleruntime-cro00:20:002
1264699190,16cyclictest24074-21nfsd420:25:202
1264599194,1cyclictest0-21swapper/100:24:151
1264599192,16cyclictest0-21swapper/123:45:471
1264599191,3cyclictest26228-21strings23:20:171
12645991913,5cyclictest0-21swapper/100:26:241
1264599190,3cyclictest0-21swapper/123:05:011
12644991917,1cyclictest0-21swapper/022:00:000
12644991916,2cyclictest8749-21smartctl20:55:210
12644991916,2cyclictest3981-21H222:10:210
1264499191,15cyclictest0-21swapper/023:40:190
1264499190,18cyclictest843-21systemd-network00:04:090
1264499190,18cyclictest0-21swapper/023:20:000
1264499190,18cyclictest0-21swapper/021:17:550
1264499190,17cyclictest4058-21nvmesmart_nvme022:40:200
1264499190,16cyclictest3985-21H222:10:210
1264699182,15cyclictest0-21swapper/221:10:132
12646991816,1cyclictest27950-21needreboot00:20:162
12646991816,1cyclictest0-21swapper/220:30:072
12646991816,1cyclictest0-21swapper/219:10:182
12646991815,2cyclictest7188-21grep21:50:172
12646991815,2cyclictest23978-21cat22:20:182
12646991814,3cyclictest0-21swapper/223:00:152
12646991812,3cyclictest0-21swapper/221:45:022
1264699181,16cyclictest0-21swapper/220:24:382
1264699180,3cyclictest2007-21systemd-journal19:56:472
1264699180,17cyclictest843-21systemd-network23:55:542
1264699180,17cyclictest745-21kernelversion19:45:192
1264699180,17cyclictest5002-21cat20:50:152
1264699180,17cyclictest3981-21H222:10:212
1264699180,17cyclictest0-21swapper/221:20:232
1264699180,16cyclictest3989-21H222:10:212
1264599182,15cyclictest26696-21nfsd420:30:211
1264599182,15cyclictest175642sleep122:09:171
12645991815,2cyclictest7495-21cpuspeed_turbos20:55:161
12645991814,3cyclictest0-21swapper/119:20:151
12645991814,1cyclictest0-21swapper/122:25:011
12645991813,4cyclictest3871-21kernelversion00:35:171
1264599180,17cyclictest16518-21nvmesmart_nvme000:00:191
12644991815,2cyclictest461-21cpuspeed_turbos21:40:130
1264499181,16cyclictest3450-21gsd-color20:25:200
1264499181,16cyclictest0-21swapper/019:30:170
1264499180,3cyclictest25269-21awk00:15:170
1264499180,3cyclictest1079-21cups-browsed21:25:220
1264499180,17cyclictest0-21swapper/023:55:000
1264699172,1cyclictest0-21swapper/200:35:142
12646991714,2cyclictest9076-21ls20:55:232
12646991714,2cyclictest4206-21grep23:40:132
12646991714,2cyclictest30948-21nfsd421:35:192
12646991714,2cyclictest22959-21fschecks_time23:15:152
12646991714,2cyclictest16463-21nfsd400:00:182
12646991714,2cyclictest1515-21lxd22:08:472
12646991714,2cyclictest10810-21pluginstate22:55:002
1264699171,15cyclictest207392chrt22:15:032
1264699171,15cyclictest0-21swapper/221:15:132
1264699170,2cyclictest24134-21apt-config21:25:022
1264699170,2cyclictest21498-21cpuspeed_turbos00:10:152
1264699170,2cyclictest18724-21expr19:20:152
1264699170,2cyclictest1525-21lxd20:08:472
1264699170,2cyclictest1351-21lxd23:22:322
1264699170,1cyclictest3989-21H222:10:212
1264699170,1cyclictest3985-21H222:10:212
1264699170,1cyclictest0-21swapper/221:09:402
1264699170,16cyclictest9220-21awk20:00:192
1264699170,16cyclictest843-21systemd-network19:38:002
1264699170,16cyclictest5823-21python321:50:012
1264699170,16cyclictest455-21plymouthd22:35:222
1264699170,16cyclictest3881-21nfsd422:40:192
1264699170,16cyclictest32064-21mailstats23:30:222
1264699170,16cyclictest31816-21cron00:30:012
1264699170,16cyclictest29503-21expr22:30:132
1264699170,16cyclictest28419-21smartctl21:30:192
1264699170,16cyclictest19043-21sessionclean23:09:002
1264699170,16cyclictest16304-21fschecks_count19:15:172
1264699170,16cyclictest13121-21fschecks_time22:00:182
1264699170,16cyclictest0-21swapper/219:34:102
12645991715,1cyclictest238692sleep119:30:111
12645991715,1cyclictest21-21ksoftirqd/120:40:191
12645991715,1cyclictest0-21swapper/122:27:391
12645991715,1cyclictest0-21swapper/121:40:201
12645991714,2cyclictest9071-21expr22:50:141
12645991714,2cyclictest5177-21latency23:40:171
12645991714,2cyclictest29909-21expr19:40:161
12645991714,2cyclictest25531-21cut21:25:191
12645991714,2cyclictest22411-21cut20:25:001
12645991714,2cyclictest18948-21sed23:08:591
12645991714,2cyclictest15034-21sed22:05:001
12645991714,1cyclictest0-21swapper/119:18:291
12645991713,3cyclictest31145-21nvmesmart_nvme021:35:201
1264599171,1cyclictest0-21swapper/123:55:161
1264599171,1cyclictest0-21swapper/120:45:141
1264599171,15cyclictest0-21swapper/122:30:181
1264599170,2cyclictest8931-21python321:55:001
1264599170,2cyclictest634-21awk22:35:181
1264599170,2cyclictest4233-21sendmail_mailtr22:40:221
1264599170,2cyclictest3981-21H222:10:211
1264599170,2cyclictest24926-21chrt20:28:171
1264599170,2cyclictest24001-21date00:15:011
1264599170,1cyclictest0-21swapper/120:02:191
1264599170,16cyclictest5716-21/usr/sbin/munin19:55:171
1264599170,16cyclictest3989-21H222:10:211
1264599170,16cyclictest385-21dump-pmu-power23:35:001
1264599170,16cyclictest28004-21lxd23:54:331
1264599170,16cyclictest20156-21timerandwakeup21:15:211
1264599170,16cyclictest1481-21snapd23:12:381
1264599170,16cyclictest14027-21nfsd421:05:181
1264599170,16cyclictest1377-21lxd20:10:471
12644991715,1cyclictest0-21swapper/019:15:160
12644991714,2cyclictest4675-21cpuspeed_turbos20:50:140
12644991714,2cyclictest3987-21H222:10:210
12644991714,2cyclictest3976-21H222:10:210
12644991714,2cyclictest31700-21df20:40:150
12644991714,2cyclictest29645-21cpuspeed_turbos19:40:160
12644991714,2cyclictest26615-21cstates22:25:150
12644991714,2cyclictest17476-21fschecks_time20:15:140
12644991714,2cyclictest11655-21expr22:55:140
12644991712,4cyclictest0-21swapper/023:55:200
1264499171,15cyclictest107242sleep020:04:220
1264499170,2cyclictest4932-21processes21:45:210
1264499170,2cyclictest30530-21mailstats22:30:210
1264499170,2cyclictest27030-21egrep21:30:140
1264499170,2cyclictest15496-21/usr/sbin/munin23:00:190
1264499170,2cyclictest13490-21cut21:05:150
1264499170,2cyclictest11104-21sed21:00:180
1264499170,16cyclictest6023-21cstates22:45:120
1264499170,16cyclictest31014-21munin-plugin-st20:40:000
1264499170,16cyclictest3012-21cpuspeed_turbos00:35:150
1264499170,16cyclictest29986-21/usr/sbin/munin21:35:160
1264499170,16cyclictest25470-21find20:30:140
1264499170,16cyclictest25036-21/usr/sbin/munin23:20:190
1264499170,16cyclictest16683-21/usr/sbin/munin23:05:120
1264499170,16cyclictest15661-21systemctl20:10:220
1264499170,16cyclictest1486-21snapd00:25:080
1264499170,16cyclictest13852-21smartctl22:00:210
1264499170,16cyclictest1-21systemd23:29:290
12646991614,1cyclictest14735-21fschecks_count20:10:172
1264699160,15cyclictest9517-21apt-config21:55:002
1264699160,15cyclictest7988-21cat23:45:202
1264699160,15cyclictest29585-21grep19:40:152
1264699160,15cyclictest19653-21grep23:10:122
1264699160,15cyclictest17082-21cat20:15:132
1264699160,15cyclictest0-21swapper/222:10:162
1264699160,15cyclictest0-21swapper/200:25:152
12645991614,1cyclictest26718-21expr19:35:141
12645991614,1cyclictest0-21swapper/122:45:151
12645991614,1cyclictest0-21swapper/122:15:171
12645991614,1cyclictest0-21swapper/121:30:221
12645991614,1cyclictest0-21swapper/119:45:161
12645991614,1cyclictest0-21swapper/100:15:131
12645991613,2cyclictest18515-21fschecks_time00:05:161
12645991613,2cyclictest15791-21cpuspeed_turbos21:10:141
1264599160,2cyclictest28602-21cat20:35:161
1264599160,2cyclictest22285-21/usr/sbin/munin23:15:211
1264599160,2cyclictest21539-21cat21:20:171
1264599160,1cyclictest18349-21expr22:10:141
1264599160,1cyclictest0-21swapper/100:30:181
1264599160,15cyclictest852-21egrep23:35:141
1264599160,15cyclictest5071-21expr20:50:151
1264599160,15cyclictest3881-21latency19:50:171
1264599160,15cyclictest0-21swapper/121:55:001
12644991614,1cyclictest22413-21awk21:20:210
12644991614,1cyclictest17512-21timerandwakeup21:10:210
12644991614,1cyclictest0-21swapper/022:50:200
12644991614,1cyclictest0-21swapper/022:35:170
12644991614,1cyclictest0-21swapper/022:20:180
12644991614,1cyclictest0-21swapper/022:10:220
12644991614,1cyclictest0-21swapper/022:05:140
12644991614,1cyclictest0-21swapper/019:39:000
12644991614,1cyclictest0-21swapper/019:20:180
12644991614,1cyclictest0-21swapper/000:10:140
12644991613,2cyclictest399-20systemd-journal20:05:020
12644991613,2cyclictest32341-21cpuspeed_turbos19:45:170
1264499160,2cyclictest30565-21ls23:30:140
1264499160,1cyclictest6466-21apt-config21:50:030
1264499160,16cyclictest0-21swapper/023:45:110
1264499160,15cyclictest843-21systemd-network23:35:180
1264499160,15cyclictest6127-21cat19:55:140
1264499160,15cyclictest20770-21apache_processe22:15:110
1264499160,15cyclictest0-21swapper/020:45:160
1264499160,15cyclictest0-21swapper/019:50:180
1264499160,15cyclictest0-21swapper/019:10:190
1264599150,1cyclictest0-21swapper/123:25:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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