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2026-05-14 - 11:43
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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 Thu May 14, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2113199262,23cyclictest0-21swapper/223:37:392
2113199262,23cyclictest0-21swapper/220:30:552
21131992517,6cyclictest14230-21sessionclean00:39:012
2113199244,19cyclictest0-21swapper/221:10:582
2113199243,20cyclictest22781-21date23:00:012
2113199242,21cyclictest18888-21cat21:55:132
2113199232,20cyclictest0-21swapper/200:15:122
2113199222,19cyclictest28-21ksoftirqd/220:05:152
2113199222,19cyclictest281362chrt20:16:332
21131992214,7cyclictest3716-21chrt21:29:212
21131992214,7cyclictest12896-21expr21:45:142
2113199220,7cyclictest25065-21cut19:15:152
2113199220,3cyclictest8667-21sed22:35:002
2113199220,2cyclictest25289-21apt-get20:15:012
2113199220,21cyclictest8735-21cut23:30:172
2113199220,21cyclictest28674-21fschecks_count21:15:162
2113199220,21cyclictest26318-21cat00:05:012
2113199220,21cyclictest0-21swapper/223:05:122
2113199220,1cyclictest0-21swapper/222:35:182
2113199220,1cyclictest0-21swapper/221:35:202
2113199220,1cyclictest0-21swapper/219:35:212
2113199220,1cyclictest0-21swapper/200:08:432
2113199220,16cyclictest4725-21awk22:25:182
2113199220,16cyclictest23111-21expr23:00:132
2112599220,6cyclictest0-21swapper/100:25:161
21131992116,4cyclictest0-21swapper/219:45:152
21131992114,6cyclictest30849-21fschecks_time00:10:152
21131992113,7cyclictest5493-21sed00:20:212
2113199210,2cyclictest475-21cat23:15:212
2113199210,2cyclictest30355-21cut19:25:162
2113199210,2cyclictest30252-21ntpq20:20:172
2113199210,20cyclictest24053-21apt-key22:05:012
2113199210,20cyclictest20892chrt19:31:392
2113199210,20cyclictest0-21swapper/223:55:212
2113199210,20cyclictest0-21swapper/221:20:162
2113199210,20cyclictest0-21swapper/219:55:172
2113199210,1cyclictest0-21swapper/223:50:182
2113199210,1cyclictest0-21swapper/223:45:142
2113199210,1cyclictest0-21swapper/223:40:182
2113199210,1cyclictest0-21swapper/223:25:132
2113199210,1cyclictest0-21swapper/222:00:202
2113199210,1cyclictest0-21swapper/221:30:162
2113199210,1cyclictest0-21swapper/221:05:012
2113199210,1cyclictest0-21swapper/220:55:122
2113199210,1cyclictest0-21swapper/220:55:012
2113199210,1cyclictest0-21swapper/220:40:012
2113199210,1cyclictest0-21swapper/219:10:202
2113199210,16cyclictest30394-21expr22:15:142
2113199210,16cyclictest19937-21cat22:55:012
2113199210,16cyclictest1984-21expr23:20:142
2113199210,15cyclictest11357-21expr20:45:152
2112599212,5cyclictest0-21swapper/123:19:531
21125992117,3cyclictest0-21swapper/123:45:481
21125992117,3cyclictest0-21swapper/100:30:401
2112599210,3cyclictest0-21swapper/121:30:201
21131992015,4cyclictest0-21swapper/223:10:142
21131992014,5cyclictest0-21swapper/222:40:202
21131992014,5cyclictest0-21swapper/220:40:082
21131992014,5cyclictest0-21swapper/219:50:152
2113199200,2cyclictest17285-21cat20:00:152
2113199200,2cyclictest10094-21sed00:30:162
2113199200,1cyclictest0-21swapper/222:45:132
2113199200,1cyclictest0-21swapper/222:20:132
2113199200,1cyclictest0-21swapper/221:40:162
2113199200,1cyclictest0-21swapper/221:40:152
2113199200,1cyclictest0-21swapper/220:25:222
2113199200,1cyclictest0-21swapper/219:21:032
2113199200,1cyclictest0-21swapper/200:29:182
2113199200,16cyclictest28583-21grep22:10:172
2111999204,15cyclictest0-21swapper/023:20:560
2111999200,5cyclictest0-21swapper/019:32:460
2113199190,1cyclictest0-21swapper/219:40:152
2113199190,18cyclictest0-21swapper/221:50:132
2113199190,18cyclictest0-21swapper/221:05:122
2112599192,2cyclictest4025-21changes_open22:10:211
2112599192,16cyclictest18518-21nfsd422:50:151
2112599192,16cyclictest0-21swapper/119:24:451
21125991917,1cyclictest0-21swapper/121:50:231
21125991917,1cyclictest0-21swapper/121:35:321
2112599190,3cyclictest0-21swapper/123:12:161
2112599190,2cyclictest27485-21dpkg21:15:011
21119991915,3cyclictest0-21swapper/019:20:370
21119991915,1cyclictest0-21swapper/021:45:570
21125991816,1cyclictest21-21ksoftirqd/123:01:261
21125991815,2cyclictest13841-21smtp00:35:451
21125991814,3cyclictest1351-21lxd22:38:491
21125991813,4cyclictest7507-21cpuspeed_turbos23:30:121
2112599180,3cyclictest27381-21grep22:10:131
2112599180,3cyclictest23339-21awk21:05:171
2112599180,1cyclictest0-21swapper/119:40:131
2112599180,17cyclictest29280-21apt-get00:10:011
2112599180,16cyclictest3989-21H222:10:211
2111999182,2cyclictest26032-21seq00:02:000
21119991816,1cyclictest0-21swapper/023:57:390
21119991815,2cyclictest24905-21idleruntime19:15:150
21119991814,3cyclictest3981-21H222:10:210
21119991814,3cyclictest30366-21grep21:20:010
21119991814,3cyclictest1525-21lxd21:42:500
21119991814,3cyclictest1525-21lxd21:42:490
21119991814,3cyclictest1057-21cron22:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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