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2026-07-24 - 08:48
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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 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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