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2026-07-25 - 13:44
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Sat Jul 25, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1367210418,73sleep00-21swapper/019:05:290
239699954,81cyclictest1770-21cron23:40:011
209029323,24sleep10-21swapper/119:08:431
2396998833,50cyclictest21651-21cron00:35:001
239299885,66cyclictest0-21swapper/000:20:130
2392998628,51cyclictest12354-21/usr/sbin/munin22:35:320
2396998427,52cyclictest20362-21cron21:30:151
239299842,59cyclictest9057-40logrotate00:00:000
2392998417,46cyclictest11810-21uname00:05:350
239699836,22cyclictest28134-21apt-get20:20:121
2396998324,49cyclictest457-21dbus-daemon20:35:001
239699826,19cyclictest29099-21apt-get23:25:121
239699826,19cyclictest23863-21apt-get23:10:131
239699825,20cyclictest979-21apt-get22:05:131
239299825,50cyclictest0-21swapper/020:10:400
239299822,50cyclictest19875-21taskset22:57:140
239699816,23cyclictest22584-21apt-get21:35:131
239699816,23cyclictest13307-21apt-get22:40:151
239699816,19cyclictest6277-21apt-get22:20:141
2396998126,49cyclictest20623-21idleruntime-cro20:00:011
239299815,50cyclictest0-21swapper/020:35:200
239299815,48cyclictest0-21swapper/022:20:200
2392998128,47cyclictest22877-21df20:05:180
2392998118,57cyclictest30652-21sh21:55:330
2392998118,57cyclictest30652-21sh21:55:330
239699807,20cyclictest29910-21apt-get21:55:141
239699807,20cyclictest29910-21apt-get21:55:141
239699807,19cyclictest16616-21apt-get00:20:151
239699806,19cyclictest27361-21apt-get23:20:111
2396998010,24cyclictest24200-21apt-get21:40:151
239299806,48cyclictest0-21swapper/022:05:330
239699796,19cyclictest4735-21apt-get19:15:131
239699796,18cyclictest10029-21apt-get21:00:171
239699794,68cyclictest9836-21http19:30:001
2396997921,19cyclictest21696-21wc20:00:341
2396997920,18cyclictest20458-21grep21:30:021
239299797,63cyclictest0-21swapper/020:15:130
239299795,51cyclictest0-21swapper/023:30:220
2392997928,45cyclictest14847-21apt00:15:100
239699787,24cyclictest26434-21apt-get21:45:131
239699787,20cyclictest10277-21apt-get19:30:251
239699786,19cyclictest5747-21apt-get23:50:131
239699786,19cyclictest3043-21apt-get20:40:211
2396997823,48cyclictest457-21dbus-daemon23:45:111
2396997823,48cyclictest457-21dbus-daemon23:45:111
2396997817,21cyclictest243-21systemd-journal00:26:111
239299789,46cyclictest14-21ksoftirqd/019:45:330
239299788,41cyclictest0-21swapper/022:15:260
239299782,71cyclictest22437-21cat21:35:000
239699777,23cyclictest2476-21apt-get19:10:141
239699776,20cyclictest29871-21apt-get20:25:131
239699776,20cyclictest29871-21apt-get20:25:131
2396997720,18cyclictest21123-21wc23:00:311
2392997728,43cyclictest14146-21cat19:40:160
239299772,45cyclictest6475-21runrttasks23:50:280
2392997724,47cyclictest21862-21cut00:35:170
2392997724,47cyclictest21862-21cut00:35:170
239699766,64cyclictest0-21swapper/121:10:251
239699765,18cyclictest28171-21apt-get21:50:151
2396997619,17cyclictest1930-21sed20:35:361
2396997617,23cyclictest457-21dbus-daemon20:20:001
2396997617,16cyclictest6100-21readlink22:20:001
2396997614,22cyclictest457-21dbus-daemon20:10:051
239299769,35cyclictest0-21swapper/023:45:370
239299769,35cyclictest0-21swapper/023:45:370
239299766,62cyclictest0-21swapper/019:10:140
239299762,68cyclictest25568-21sed23:15:010
239299762,53cyclictest6116-21taskset19:18:050
239699758,18cyclictest6494-21apt-get19:20:101
239699757,22cyclictest32404-21ntp_states22:00:301
239699756,19cyclictest13115-21apt-get00:10:151
239699756,18cyclictest11492-21apt-get22:35:111
239699754,27cyclictest243-21systemd-journal23:05:201
2396997524,44cyclictest34752sleep122:10:291
2396997520,14cyclictest19647-21grep22:55:371
2396997516,20cyclictest3344-21tail23:40:471
239299759,61cyclictest0-21swapper/022:25:200
239299756,61cyclictest0-21swapper/023:35:110
239299753,66cyclictest18514-21latency_hist22:55:010
2392997526,44cyclictest3541-21pluginstate22:10:310
2392997524,44cyclictest17287-21cat21:20:170
2392997517,32cyclictest222202chrt20:03:270
239699749,21cyclictest243-21systemd-journal23:31:281
239699747,19cyclictest13827-21apt-get19:40:111
239699746,18cyclictest7487-21apt-get23:55:151
239699744,28cyclictest17138-21ls19:50:001
2396997416,17cyclictest11350-21sort22:35:011
239299749,35cyclictest0-21swapper/020:20:180
239299748,36cyclictest0-21swapper/021:15:130
239299748,36cyclictest0-21swapper/019:55:300
239299747,59cyclictest0-21swapper/022:00:130
239299745,40cyclictest0-21swapper/023:05:300
2392997420,47cyclictest8464-21cpuspeed19:25:180
2392997412,41cyclictest20616-21cstates23:00:180
239699737,21cyclictest17054-21apt-get21:20:121
239699737,20cyclictest17307-21apt-get19:50:131
239699736,22cyclictest6527-21apt-get20:50:131
239699736,19cyclictest9284-21apt-get00:00:131
239699736,19cyclictest22542-21apt-get20:05:121
239699734,26cyclictest503-21snmpd00:15:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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