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2025-12-30 - 11:46
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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 Tue Dec 30, 2025 00:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3150699274,22cyclictest5002-21cron00:05:001
3150599230,5cyclictest0-21swapper/023:55:030
3150699220,4cyclictest0-21swapper/122:50:221
3150799210,18cyclictest30321-21fschecks_time22:55:152
3150699214,16cyclictest5437-21cpuspeed_turbos19:20:161
3150699214,16cyclictest5437-21cpuspeed_turbos19:20:151
31505992117,3cyclictest0-21swapper/023:17:480
31505992117,3cyclictest0-21swapper/023:17:470
3150599210,20cyclictest0-21swapper/019:25:160
3150799203,16cyclictest0-21swapper/200:10:152
3150799201,4cyclictest0-21swapper/221:05:192
3150699203,16cyclictest2955-21sendmail_mailqu22:05:221
3150599203,16cyclictest0-21swapper/021:09:170
31507991917,1cyclictest4524-21expr21:10:222
3150799190,2cyclictest18266-21grep20:40:172
3150799190,2cyclictest18266-21grep20:40:172
3150799190,18cyclictest0-21swapper/200:06:342
3150699193,15cyclictest0-21swapper/121:45:021
31506991918,0cyclictest0-21swapper/119:25:121
3150599193,15cyclictest9-21ksoftirqd/023:06:220
3150799182,2cyclictest27386-21chrt21:50:562
3150799182,15cyclictest9865-21cat21:20:202
3150799182,15cyclictest3991-21H222:10:212
31507991816,1cyclictest308602chrt23:52:042
31507991816,1cyclictest0-21swapper/222:26:582
31507991816,1cyclictest0-21swapper/200:00:212
31507991815,2cyclictest14171-21expr00:20:142
31507991814,3cyclictest843-21systemd-network23:19:332
31507991814,3cyclictest843-21systemd-network23:19:322
31507991814,3cyclictest1522-21lxd23:02:322
31507991814,3cyclictest1490-21snapd23:05:082
31507991814,2cyclictest843-21systemd-network19:25:152
31507991814,2cyclictest16637-21cpuspeed_turbos19:40:122
31507991813,4cyclictest0-21swapper/220:29:232
31507991812,5cyclictest23080-21https20:50:022
3150799181,16cyclictest9142-21date20:25:022
3150799181,16cyclictest0-21swapper/223:47:362
3150799180,17cyclictest8192-21kernelversion22:15:152
3150799180,17cyclictest399-20systemd-journal22:25:012
31506991815,2cyclictest26426-21timerandwakeup19:55:221
31506991811,6cyclictest6660-21grep20:20:131
3150599182,15cyclictest9-21ksoftirqd/020:08:230
31505991816,1cyclictest0-21swapper/021:45:130
31505991815,2cyclictest1551-21snapd23:40:380
31505991815,2cyclictest1551-21snapd23:40:380
31505991815,1cyclictest0-21swapper/021:56:350
31505991814,3cyclictest0-21swapper/022:52:570
31505991814,3cyclictest0-21swapper/000:02:240
3150599180,17cyclictest16658-21grep22:30:190
3150599180,16cyclictest0-21swapper/022:00:590
31507991716,1cyclictest28-21ksoftirqd/223:30:102
31507991714,2cyclictest7576-21nfsd423:10:182
31507991714,2cyclictest30345-21cpuspeed_turbos20:05:152
31507991714,2cyclictest29010-21/usr/sbin/munin21:00:162
31507991714,2cyclictest27452-21uname22:50:162
31507991714,2cyclictest24416-21cat19:55:012
31507991714,2cyclictest19907-21cstates21:40:142
31507991714,2cyclictest19720-21cat00:30:152
31507991714,2cyclictest14956-21ls20:35:152
31507991714,2cyclictest14435-21dpkg23:25:012
31507991714,2cyclictest0-21swapper/220:00:182
3150799171,15cyclictest6550-21nfsd419:20:202
3150799171,15cyclictest6550-21nfsd419:20:202
3150799170,2cyclictest7695-21chrt21:19:482
3150799170,2cyclictest22744-21cstates00:35:172
3150799170,2cyclictest18167-21apache_processe22:35:122
3150799170,2cyclictest1490-21snapd22:45:062
3150799170,2cyclictest1425-21cpuspeed_turbos22:05:162
3150799170,16cyclictest32323-21expr23:55:162
3150799170,16cyclictest30069-21vmstat21:55:242
3150799170,16cyclictest25631-21latency_hist23:45:012
3150799170,16cyclictest25631-21latency_hist23:45:012
3150799170,16cyclictest18086-21proc_pri00:25:192
3150799170,16cyclictest1686-21postgres19:13:162
3150799170,16cyclictest16860-21nvmesmart_nvme022:30:192
3150799170,16cyclictest16715-21/usr/sbin/munin21:35:152
3150799170,16cyclictest12623-21processes00:15:222
3150799170,16cyclictest0-21swapper/220:15:192
3150699177,10cyclictest21-21ksoftirqd/122:41:281
31506991715,1cyclictest0-21swapper/122:20:151
31506991714,2cyclictest7008-21munin-plugin-st22:15:001
31506991714,2cyclictest29936-21/usr/sbin/munin21:00:201
31506991714,2cyclictest15778-21cat22:30:151
31506991714,2cyclictest1375-21munin-node22:35:121
31506991714,2cyclictest12830-21pzem_power21:25:221
31506991714,2cyclictest0-21swapper/123:20:181
31506991714,2cyclictest0-21swapper/121:31:211
3150699171,1cyclictest1992-21grep20:10:201
3150699171,15cyclictest31174-21processes22:55:201
3150699171,15cyclictest0-21swapper/120:50:011
3150699170,2cyclictest3450-21gsd-color21:55:231
3150699170,2cyclictest2069-21systemd-udevd20:06:521
3150699170,2cyclictest20540-21needreboot00:30:181
3150699170,2cyclictest1522-21lxd19:44:481
3150699170,16cyclictest993-21dbus-daemon21:15:221
3150699170,16cyclictest9816-21ntp_offset00:10:191
3150699170,16cyclictest4035-21H222:10:211
3150699170,16cyclictest3983-21H222:10:211
3150699170,16cyclictest26179-21munin-plugin-st20:55:011
3150699170,16cyclictest26129-21perf22:50:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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