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2026-06-19 - 10:34
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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 Fri Jun 19, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
283839911711,24cyclictest0-21swapper/020:20:120
283839911248,31cyclictest0-21swapper/021:30:130
28383991096,81cyclictest0-21swapper/022:00:110
357621050,7chrt3578-21aten2.4_r3power19:30:151
28383991057,74cyclictest0-21swapper/022:45:120
28383991006,76cyclictest0-21swapper/023:50:250
2800229830,56sleep10-21swapper/119:07:551
2838399966,22cyclictest0-21swapper/020:05:130
2838399966,19cyclictest0-21swapper/023:45:150
28385999412,67cyclictest0-21swapper/122:45:111
2838399917,65cyclictest0-21swapper/020:10:120
2838399897,57cyclictest0-21swapper/000:15:130
28383998913,22cyclictest0-21swapper/023:00:130
28383998812,55cyclictest0-21swapper/023:15:130
2838599879,20cyclictest6067-21apt-get00:10:111
2838399877,60cyclictest0-21swapper/020:00:100
28383998711,52cyclictest0-21swapper/022:50:120
2838399868,22cyclictest0-21swapper/021:35:110
28385998527,18cyclictest22095-21cut23:25:151
28385998525,20cyclictest481-21gdbus21:15:001
2838399857,56cyclictest0-21swapper/022:05:120
2838399857,22cyclictest0-21swapper/020:55:120
2838599847,23cyclictest19633-21apt-get20:15:121
2838599847,23cyclictest19633-21apt-get20:15:121
2838599847,20cyclictest1795-21apt-get19:25:111
28385998424,19cyclictest26607-21sshd20:35:111
28385998410,26cyclictest7086-21apt-get19:40:111
28383998442,24cyclictest14-21ksoftirqd/020:30:130
28383998414,48cyclictest0-21swapper/021:00:120
2838599838,23cyclictest1219-21apt-get20:55:141
28385998326,17cyclictest32372-21grep22:20:371
28385998324,17cyclictest9321-21awk21:15:371
28385998324,17cyclictest9321-21awk21:15:371
2838399837,21cyclictest0-21swapper/023:30:110
28385998227,20cyclictest243-21systemd-journal20:55:001
28385998219,19cyclictest503-21snmpd22:00:351
28383998214,32cyclictest9305-21aten2.4-expect19:45:270
28383998211,38cyclictest28141-21sensors23:40:340
2838599813,22cyclictest31311-21aten2.4_r3power23:50:281
28385998122,18cyclictest21242-21sort23:20:361
28385998111,58cyclictest0-21swapper/122:40:111
2838399817,51cyclictest0-21swapper/023:20:120
28383998114,35cyclictest30992-21/usr/sbin/munin19:15:180
2838599808,21cyclictest10870-21apt-get19:50:141
2838599803,30cyclictest0-21swapper/122:25:111
28385998021,23cyclictest243-21systemd-journal19:20:011
2838399808,52cyclictest0-21swapper/019:30:120
2838399808,51cyclictest0-21swapper/000:10:130
2838399807,19cyclictest0-21swapper/020:50:140
28385997919,21cyclictest16588-21cron23:10:001
2838399799,53cyclictest0-21swapper/019:25:240
2838599788,23cyclictest27849-21apt-get22:10:131
28385997822,20cyclictest11142-21basename00:25:001
28385997819,24cyclictest457-21dbus-daemon21:40:001
28385997812,22cyclictest481-21gdbus23:45:011
2838399787,52cyclictest0-21swapper/021:25:150
28383997845,22cyclictest14-21ksoftirqd/021:50:110
2838599778,22cyclictest17894-21apt-get20:10:111
28385997723,16cyclictest29202-21aten2.4_r3power23:45:181
28385997719,19cyclictest30164-21sed19:15:021
2838399777,49cyclictest0-21swapper/000:05:140
2838599768,20cyclictest24873-21apt-get20:30:131
2838599754,36cyclictest3282-21ntp_states00:00:361
28385997525,18cyclictest23782-21strings20:25:271
28385997524,19cyclictest26872-21sshd23:38:101
28385997520,19cyclictest243-21systemd-journal19:38:071
28383997513,38cyclictest18480-21cut23:15:010
2804127515,50sleep00-21swapper/019:08:180
2838599748,20cyclictest19080-21apt-get21:45:221
28385997419,20cyclictest243-21systemd-journal22:55:001
2838399745,50cyclictest0-21swapper/023:55:020
28383997431,25cyclictest0-21swapper/020:25:130
2838599727,26cyclictest13490-21apt-get21:30:121
2838399728,48cyclictest0-21swapper/023:35:140
2838399727,51cyclictest0-21swapper/000:35:150
28383997210,44cyclictest0-21swapper/022:35:140
2838399717,40cyclictest0-21swapper/019:20:280
2838599706,29cyclictest20816-21apt-get21:50:111
2838399697,45cyclictest0-21swapper/019:10:120
2838399696,46cyclictest0-21swapper/022:30:120
28383996922,33cyclictest14-21ksoftirqd/000:25:140
28383996913,23cyclictest14282-21sed20:00:010
2838399683,23cyclictest14-21ksoftirqd/022:20:120
28383996821,20cyclictest20236-21runrttasks21:45:480
28383996815,19cyclictest12436-21munin-run19:55:000
28383996720,19cyclictest663-21runrttasks22:25:130
28383996718,20cyclictest457-21dbus-daemon19:40:000
28383996716,36cyclictest14-21ksoftirqd/023:05:230
28383996714,28cyclictest17777-21taskset21:40:310
28383996713,30cyclictest11135-21turbostat.cron00:25:000
28383996712,19cyclictest0-21swapper/021:05:210
28383996710,38cyclictest0-21swapper/021:55:330
2838599668,20cyclictest30169-21apt-get20:45:161
2838399668,30cyclictest0-21swapper/000:00:400
28383996618,25cyclictest13390-21runrttasks00:30:190
28383996614,24cyclictest0-21swapper/023:25:200
28383996535,20cyclictest14-21ksoftirqd/020:45:140
28383996524,23cyclictest14-21ksoftirqd/022:15:130
28383996520,17cyclictest455-21rs:main0
28383996513,31cyclictest26611-21/usr/sbin/munin20:35:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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