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2026-07-24 - 09:02
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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 Fri Jul 24, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
128699343,24cyclictest0-21swapper/120:15:001
128699262,23cyclictest27347-21missed_timers22:45:171
128699260,2cyclictest18079-21perf00:25:001
128699253,21cyclictest0-21swapper/121:09:071
1286992414,5cyclictest10937-21grep21:20:151
128699234,18cyclictest0-21swapper/121:01:461
128699232,20cyclictest0-21swapper/121:15:191
128699230,2cyclictest26542-21sed19:55:011
128699230,2cyclictest17088-21cat23:25:011
128699230,2cyclictest12480-21apache_processe22:20:121
128799220,18cyclictest0-21swapper/220:42:242
128699221,16cyclictest32313-21grep23:50:191
128699220,2cyclictest29463-21expr20:55:141
128699220,2cyclictest28964-21sed20:55:011
128699220,2cyclictest27920-21cut23:45:011
128699220,2cyclictest25800-21cat00:35:221
128699220,2cyclictest22430-21wc20:40:211
128699220,2cyclictest22150-21date21:40:011
128699220,2cyclictest22150-21date21:40:011
128699220,2cyclictest19813-21/usr/sbin/munin22:30:221
128699220,2cyclictest17775-21ntpq21:30:181
128699220,15cyclictest0-21swapper/121:50:011
1285992219,2cyclictest15452-21munin-plugin-st19:35:010
128599221,4cyclictest0-21swapper/020:50:010
128699212,2cyclictest21-21ksoftirqd/119:11:501
1286992114,6cyclictest6686-21cat22:10:011
128699211,2cyclictest23554-21chrt22:40:091
1286992111,5cyclictest0-21swapper/122:16:501
1286992110,4cyclictest0-21swapper/122:39:571
128699210,2cyclictest4971-21expr19:15:151
128699210,2cyclictest25886-21cat20:49:551
128699210,20cyclictest455-21plymouthd23:05:011
128699210,20cyclictest23289-21fschecks_time23:35:131
128699210,20cyclictest21365-21ps23:30:191
128699210,20cyclictest15541-21expr20:30:121
128699210,20cyclictest0-21swapper/122:00:131
128699210,20cyclictest0-21swapper/120:25:131
128699210,1cyclictest7104-21cat00:05:001
128699210,1cyclictest19199-21chrt23:26:221
128699210,1cyclictest0-21swapper/123:10:161
128699210,1cyclictest0-21swapper/121:40:151
128699210,1cyclictest0-21swapper/100:30:171
128699210,1cyclictest0-21swapper/100:30:001
128699210,16cyclictest7659-21sed20:15:161
128699210,15cyclictest232462chrt19:46:051
128799204,15cyclictest0-21swapper/222:45:012
128799202,17cyclictest0-21swapper/220:20:122
1286992014,5cyclictest0-21swapper/123:55:131
1286992014,5cyclictest0-21swapper/122:10:141
128699200,4cyclictest15876-21fschecks_time22:25:141
128699200,2cyclictest836-21fschecks_time20:05:161
128699200,2cyclictest26616-21tlsmgr19:43:501
128699200,2cyclictest16065-21expr19:35:141
128699200,2cyclictest15044-21chrt00:16:441
128699200,2cyclictest13967-21missed_timers19:30:171
128699200,1cyclictest0-21swapper/123:45:131
128699200,1cyclictest0-21swapper/122:55:141
128699200,1cyclictest0-21swapper/122:55:021
128699200,1cyclictest0-21swapper/120:40:011
128699200,1cyclictest0-21swapper/120:20:131
128699200,1cyclictest0-21swapper/120:00:181
128699200,1cyclictest0-21swapper/119:20:151
128699200,19cyclictest455-21plymouthd21:55:171
128699200,19cyclictest2957-21rtkit-daemon23:07:271
128699200,19cyclictest0-21swapper/119:26:251
128699200,19cyclictest0-21swapper/100:10:171
128699200,19cyclictest0-21swapper/100:10:171
128699200,15cyclictest0-21swapper/121:50:091
128599205,14cyclictest0-21swapper/021:42:310
128599200,18cyclictest399-20systemd-journal20:39:340
128799190,18cyclictest0-21swapper/222:15:142
128699190,1cyclictest0-21swapper/123:15:201
128699190,18cyclictest0-21swapper/121:10:191
128699190,15cyclictest0-21swapper/121:30:001
128699190,14cyclictest0-21swapper/119:55:151
128699190,14cyclictest0-21swapper/100:05:131
128599193,15cyclictest29799-21idleruntime20:55:160
128599192,16cyclictest0-21swapper/021:30:170
1285991915,3cyclictest3991-21H222:10:210
128799182,2cyclictest32296-21switchtime21:55:222
128799182,15cyclictest5059-21pickup00:12:452
128799182,15cyclictest5059-21pickup00:12:452
1287991817,1cyclictest0-21swapper/219:15:142
1287991816,1cyclictest0-21swapper/223:25:172
1287991815,2cyclictest6392-21date20:15:012
1287991815,2cyclictest13109-21tr19:30:132
128799180,3cyclictest843-21systemd-network22:01:172
128799180,3cyclictest399-20systemd-journal20:15:012
128799180,2cyclictest3979-21H222:10:212
128799180,2cyclictest1523-21lxd20:52:502
128799180,17cyclictest5574-21cpuspeed_turbos21:10:152
128799180,17cyclictest0-21swapper/222:22:042
1285991818,0cyclictest27145-21mii-tool20:50:160
1285991816,1cyclictest0-21swapper/020:40:540
1285991816,1cyclictest0-21swapper/019:50:160
1285991815,2cyclictest28564-21chrt22:49:370
1285991815,2cyclictest0-21swapper/020:20:180
1285991814,3cyclictest1035-21thermald22:00:200
128599181,2cyclictest993-21dbus-daemon23:30:200
128599181,16cyclictest25047-21uname22:40:190
128599180,17cyclictest0-21swapper/019:10:130
128599180,16cyclictest0-21swapper/021:59:200
1287991715,1cyclictest0-21swapper/221:20:252
1287991714,2cyclictest4035-21H222:10:212
1287991714,2cyclictest3985-21H222:10:212
1287991714,2cyclictest3979-21H222:10:212
1287991714,2cyclictest3581-21http_loadtime23:00:172
1287991714,2cyclictest27866-21/usr/sbin/munin21:50:252
1287991714,2cyclictest22039-21munin-run21:40:002
1287991714,2cyclictest22039-21munin-run21:40:002
1287991714,2cyclictest2045-21latency_hist21:05:002
1287991714,2cyclictest19379-21ntpq20:35:182
1287991714,2cyclictest19193-21http_loadtime00:25:162
1287991714,2cyclictest17785-21taskset21:30:182
1287991714,2cyclictest16967-21awk19:35:182
1287991714,1cyclictest3985-21H222:10:212
128799170,3cyclictest0-21swapper/221:19:172
128799170,2cyclictest3414-21master20:06:352
128799170,2cyclictest31121-21grep23:50:142
128799170,2cyclictest22806-21grep00:30:202
128799170,2cyclictest13726-21grep20:25:182
128799170,2cyclictest10082-21pzem_power23:10:222
128799170,16cyclictest8666-21grep19:20:202
128799170,16cyclictest4035-21H222:10:212
128799170,16cyclictest31995-21munin-run22:55:002
128799170,16cyclictest30530-21fschecks_time20:00:162
128799170,16cyclictest25885-21cat23:40:142
128799170,16cyclictest25166-21apache_accesses21:45:122
128799170,16cyclictest23433-21cat22:40:012
128799170,16cyclictest20611-21which23:30:152
128799170,16cyclictest20060-21pzem_voltage19:40:202
128799170,16cyclictest14222-21cmp23:20:012
128799170,16cyclictest0-21swapper/222:05:162
128799170,16cyclictest0-21swapper/221:08:592
128799170,16cyclictest0-21swapper/219:10:192
128599172,1cyclictest9-21ksoftirqd/021:08:580
1285991715,1cyclictest9-21ksoftirqd/022:21:060
1285991715,1cyclictest0-21swapper/021:02:010
1285991715,1cyclictest0-21swapper/000:24:240
1285991714,2cyclictest6272-21fschecks_count23:05:150
1285991714,2cyclictest3991-21H222:10:210
1285991714,2cyclictest3985-21H222:10:210
1285991714,2cyclictest27097-21mailstats23:40:210
1285991714,2cyclictest25449-21pzem_energy00:35:200
1285991714,2cyclictest23236-21chrt19:45:560
1285991714,2cyclictest15113-21grep23:20:150
1285991714,2cyclictest10789-21expr00:10:150
1285991714,2cyclictest10789-21expr00:10:150
128599171,1cyclictest15744-21cpuspeed_turbos19:35:140
128599171,1cyclictest0-21swapper/022:38:590
128599171,15cyclictest0-21swapper/022:25:210
128599171,15cyclictest0-21swapper/020:10:140
128599170,2cyclictest9830-21cron00:10:000
128599170,2cyclictest5424-21munin-plugin-st23:05:010
128599170,2cyclictest3414-21master19:25:350
128599170,2cyclictest24967-21sort23:39:010
128599170,2cyclictest11458-21tr23:15:120
128599170,1cyclictest4035-21H222:10:210
128599170,1cyclictest0-21swapper/021:25:140
128599170,16cyclictest9916-21sed21:15:230
128599170,16cyclictest9605-21chrt19:23:290
128599170,16cyclictest7856-21cut20:15:170
128599170,16cyclictest5601-21lxd00:32:350
128599170,16cyclictest4632-21tr00:00:130
128599170,16cyclictest4035-21H222:10:210
128599170,16cyclictest399-20systemd-journal23:10:160
128599170,16cyclictest3987-21H222:10:210
128599170,16cyclictest31770-21idleruntime23:50:160
128599170,16cyclictest2007-21systemd-journal22:15:310
128599170,16cyclictest19777-21awk00:25:180
1287991614,1cyclictest610-21if_err_lxdbr022:55:162
1287991614,1cyclictest23835-21grep21:40:202
1287991614,1cyclictest16268-21/usr/sbin/munin22:25:162
1287991614,1cyclictest0-21swapper/222:30:222
1287991614,1cyclictest0-21swapper/219:55:192
1287991614,1cyclictest0-21swapper/219:45:202
1287991613,2cyclictest3983-21H222:10:212
1287991613,2cyclictest26280-21/usr/sbin/munin22:45:162
128799160,1cyclictest0-21swapper/221:29:502
128799160,1cyclictest0-21swapper/220:59:592
128799160,15cyclictest8783-21pzem_energy00:05:222
128799160,15cyclictest3979-21H222:10:212
128799160,15cyclictest25430-21processes00:35:202
128799160,15cyclictest16163-21kernelversion20:30:152
128799160,15cyclictest0-21swapper/223:15:142
128799160,15cyclictest0-21swapper/223:05:142
1285991614,1cyclictest0-21swapper/021:35:130
1285991614,1cyclictest0-21swapper/021:35:130
1285991614,1cyclictest0-21swapper/021:10:150
1285991613,2cyclictest25325-21cpuspeed_turbos21:45:140
128599160,2cyclictest455-21plymouthd22:55:150
128599160,15cyclictest4921-21if_enp1s022:05:160
128599160,15cyclictest3983-21H222:10:210
128599160,15cyclictest31415-21mailstats20:00:210
128599160,15cyclictest28586-21grep21:50:170
128599160,15cyclictest17629-21expr23:25:140
128599160,15cyclictest0-21swapper/022:30:220
128599160,15cyclictest0-21swapper/022:10:180
128599160,15cyclictest0-21swapper/020:05:140
128599160,15cyclictest0-21swapper/019:55:170
128599160,15cyclictest0-21swapper/019:40:190
128599160,15cyclictest0-21swapper/000:15:200
1287991513,1cyclictest11675-21pzem_energy19:25:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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