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2025-12-30 - 12:46
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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 376 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
3150699170,16cyclictest22555-21cpuspeed_turbos00:35:171
3150699170,16cyclictest20653-21processes19:45:181
3150699170,16cyclictest19026-21awk23:30:201
3150699170,16cyclictest1551-21snapd23:45:091
3150699170,16cyclictest1490-21snapd22:15:091
3150699170,16cyclictest1483-21snapd23:40:391
3150699170,16cyclictest1483-21snapd23:40:381
3150699170,15cyclictest4035-21H222:10:211
3150599172,1cyclictest3990-21H222:10:210
3150599172,1cyclictest0-21swapper/000:16:010
31505991714,2cyclictest7891-21sessionclean00:09:010
31505991714,2cyclictest31358-21munin-run21:05:010
31505991714,2cyclictest30271-21fschecks_count22:55:160
31505991714,2cyclictest1550-21snapd21:52:450
31505991714,2cyclictest15405-21cut22:30:000
31505991714,2cyclictest14582-21/usr/sbin/munin00:20:170
31505991714,2cyclictest13915-21expr19:35:160
31505991714,2cyclictest1035-21thermald21:25:240
3150599171,15cyclictest191372chrt21:39:170
3150599171,15cyclictest0-21swapper/020:55:180
3150599170,2cyclictest4023-21PluginScanner21:21:170
3150599170,2cyclictest19751-21cpuspeed_turbos21:40:150
3150599170,17cyclictest0-21swapper/023:11:060
3150599170,16cyclictest5812-21grep22:10:170
3150599170,16cyclictest5665-21cstates21:15:140
3150599170,16cyclictest28004-21lxd20:00:490
3150599170,16cyclictest27276-21latency_hist20:00:020
3150599170,16cyclictest22440-21awk22:40:190
3150599170,16cyclictest22205-21expr19:50:130
3150599170,16cyclictest22120-21latency_hist00:35:000
3150599170,16cyclictest1550-21snapd20:12:390
3150599170,16cyclictest1317-21sed23:00:170
3150599170,16cyclictest12224-21ntpq19:30:190
31507991614,1cyclictest0-21swapper/219:45:152
31507991614,1cyclictest0-21swapper/219:30:232
31507991613,2cyclictest20547-21cpuspeed_turbos20:45:152
3150799160,1cyclictest3884-21ntp_kernel_pll_19:15:202
3150799160,1cyclictest11477-21tr21:25:172
3150799160,15cyclictest5203-21fschecks_time22:10:152
3150799160,15cyclictest4035-21H222:10:212
3150799160,15cyclictest22674-21apache_processe21:45:112
3150799160,15cyclictest14872-21apt-key23:25:022
3150799160,15cyclictest14109-21expr19:35:152
3150799160,15cyclictest0-21swapper/223:39:202
3150799160,15cyclictest0-21swapper/222:00:132
3150799160,15cyclictest0-21swapper/221:30:132
3150799160,15cyclictest0-21swapper/220:55:182
3150799160,15cyclictest0-21swapper/219:55:132
31506991614,1cyclictest0-21swapper/123:15:001
31506991614,1cyclictest0-21swapper/123:05:171
31506991614,1cyclictest0-21swapper/122:25:161
31506991614,1cyclictest0-21swapper/121:50:141
31506991614,1cyclictest0-21swapper/120:45:011
31506991614,1cyclictest0-21swapper/120:45:001
31506991614,1cyclictest0-21swapper/120:25:221
31506991614,1cyclictest0-21swapper/120:15:151
31506991614,1cyclictest0-21swapper/119:50:141
31506991614,1cyclictest0-21swapper/119:30:151
31506991614,1cyclictest0-21swapper/100:05:181
31506991613,2cyclictest3053-21systemd-logind22:00:511
31506991613,2cyclictest29318-21expr23:50:131
31506991613,2cyclictest21862-21awk23:35:191
3150699160,2cyclictest306-21grep23:00:121
3150699160,2cyclictest0-21swapper/119:15:061
3150699160,1cyclictest0-21swapper/123:15:151
3150699160,1cyclictest0-21swapper/123:15:151
3150699160,1cyclictest0-21swapper/120:35:141
3150699160,15cyclictest8570-21cstates21:20:131
3150699160,15cyclictest31690-21apt-config23:55:001
3150699160,15cyclictest27675-21expr20:00:131
3150699160,15cyclictest1550-21snapd21:10:081
3150699160,15cyclictest0-21swapper/123:25:141
3150699160,15cyclictest0-21swapper/120:55:141
3150699160,15cyclictest0-21swapper/119:35:161
3150699160,15cyclictest0-21swapper/100:15:171
31505991614,1cyclictest140642sleep023:24:080
31505991614,1cyclictest0-21swapper/022:45:150
31505991614,1cyclictest0-21swapper/020:45:150
31505991614,1cyclictest0-21swapper/020:40:150
31505991614,1cyclictest0-21swapper/020:40:150
31505991614,1cyclictest0-21swapper/020:35:170
31505991614,1cyclictest0-21swapper/020:30:120
31505991614,1cyclictest0-21swapper/020:25:140
31505991614,1cyclictest0-21swapper/019:45:170
31505991614,1cyclictest0-21swapper/019:15:160
31505991613,2cyclictest3418-21kernelversion21:10:170
31505991613,2cyclictest23896-21nvmesmart_nvme000:35:220
31505991613,1cyclictest0-21swapper/019:10:150
3150599160,2cyclictest6864-21ls20:20:140
3150599160,2cyclictest14294-21expr21:30:130
3150599160,1cyclictest74492chrt19:22:370
3150599160,1cyclictest74492chrt19:22:370
3150599160,1cyclictest0-21swapper/000:10:160
3150599160,15cyclictest7749-21expr22:15:130
3150599160,15cyclictest26924-21/usr/sbin/munin23:45:160
3150599160,15cyclictest23441-21dpkg20:50:020
3150599160,15cyclictest20516-21cpuspeed_turbos23:35:150
3150599160,15cyclictest1809-21expr22:05:160
3150599160,15cyclictest17823-21cpuspeed_turbos23:30:160
3150599160,15cyclictest16637-21apt-get00:25:140
3150599160,15cyclictest14971-21apt-get23:25:100
3150599160,15cyclictest11620-21sensors22:20:240
3150599160,15cyclictest0-21swapper/023:50:140
3150599160,15cyclictest0-21swapper/022:37:190
31506991512,2cyclictest16947-21expr00:25:131
3150699150,1cyclictest0-21swapper/120:30:121
3150699150,1cyclictest0-21swapper/100:20:211
3150699150,0cyclictest0-21swapper/121:05:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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