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2026-06-07 - 00:18
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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 Jun 06, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11472998366,10cyclictest26-21ksoftirqd/123:40:221
1070228338,28sleep00-21swapper/019:05:300
58362820,6sleep05838-21ls23:25:220
277562780,5sleep1251rcuc/119:55:021
217972730,5sleep10-21swapper/122:40:021
11472997336,32cyclictest0-21swapper/123:55:151
11472997244,15cyclictest26-21ksoftirqd/122:25:111
1046027131,27sleep10-21swapper/119:05:271
11468997023,14cyclictest14-21ksoftirqd/023:30:050
1147299678,53cyclictest22158-21cron21:10:001
1147299678,53cyclictest22158-21cron21:10:001
11468996716,17cyclictest14-21ksoftirqd/000:00:300
1147299662,20cyclictest0-21swapper/123:15:161
11472996610,26cyclictest11096-21awk22:10:001
11468996636,12cyclictest14-21ksoftirqd/020:40:160
1146899659,27cyclictest0-21swapper/023:04:100
1147299649,21cyclictest25654-21ls21:20:001
11472996439,12cyclictest0-21swapper/100:10:111
1147299639,28cyclictest30033-21awk23:00:331
1147299639,24cyclictest23564-21latency_hist22:45:021
1147299639,24cyclictest22446-21sendmail19:40:001
11472996310,27cyclictest1729-21taskset20:10:311
11472996310,27cyclictest10878-21sendmail23:40:011
11472996310,27cyclictest10878-21sendmail23:40:011
11472996310,25cyclictest18618-21cron21:00:001
1146899639,39cyclictest28498-21users22:55:370
1146899635,23cyclictest14-21ksoftirqd/022:05:180
11468996332,13cyclictest14-21ksoftirqd/022:00:120
1147299629,30cyclictest18645-40gzip00:00:041
1147299629,28cyclictest30199-21grep00:30:281
1147299629,27cyclictest9161-21wc23:35:011
1147299629,27cyclictest3677-21grep20:15:341
1147299629,27cyclictest23915-21awk21:15:001
1147299629,27cyclictest18620-21cat22:30:231
1147299629,26cyclictest243-21systemd-journal19:25:001
1147299629,22cyclictest6476-21sort21:55:251
1147299629,20cyclictest9546-21idleruntime-cro20:35:001
1147299629,20cyclictest32682-21apt-get21:40:141
1147299629,20cyclictest27202-21taskset22:55:001
1147299629,20cyclictest13122-21turbostat19:15:001
11472996211,25cyclictest7049-21apt-get23:30:001
11472996211,25cyclictest243-21systemd-journal20:30:001
11472996211,25cyclictest15968-21head20:50:371
11472996211,22cyclictest12942-21apt-get23:45:141
11472996211,20cyclictest8460-21ntp_states22:00:301
11472996210,27cyclictest1013-21grep23:10:311
11472996210,21cyclictest4956-21sshd21:50:291
11472996210,21cyclictest481-21gdbus20:40:001
1146899627,24cyclictest14-21ksoftirqd/023:45:540
1146899626,44cyclictest0-21swapper/021:45:140
1146899625,43cyclictest18466-21sshd20:58:290
1147299619,26cyclictest32412-21grep20:05:321
1147299619,26cyclictest20694-21ls00:05:171
1147299619,26cyclictest14464-21needreboot19:15:271
1147299619,25cyclictest3842-21basename23:20:171
1147299619,24cyclictest32492-21sleep23:10:001
1147299619,22cyclictest23921-21basename22:45:261
1147299618,21cyclictest0-21swapper/100:23:451
11472996125,22cyclictest27752-21apt-get00:25:151
11472996111,25cyclictest12836-21turbostat22:15:001
11472996111,25cyclictest12836-21turbostat22:15:001
11472996111,20cyclictest14073-21tail22:15:371
11472996111,19cyclictest562-21runrttasks20:00:271
11472996110,26cyclictest29392-21basename21:30:161
11472996110,26cyclictest16729-21awk23:55:001
11472996110,25cyclictest28009-21grep22:55:261
11472996110,25cyclictest23337-21ntp_states19:40:291
11472996110,22cyclictest28226-21basename19:55:271
11472996110,22cyclictest14835-21munin-run20:50:001
11472996110,21cyclictest31391-21df_inode21:35:181
11472996110,21cyclictest15553-21grep22:20:321
11472996110,20cyclictest23783-21apt-get00:15:161
1147299609,25cyclictest26063-21sort21:20:181
1147299609,25cyclictest26045-21sort19:50:021
1147299608,22cyclictest19149-21df_inode21:00:191
11472996010,25cyclictest17435-21cut19:25:171
11472996010,24cyclictest503-21snmpd20:20:301
11472996010,20cyclictest4054-21latency_hist21:50:001
11472996010,20cyclictest28636-21grep21:25:361
11472996010,20cyclictest12324-21/usr/sbin/munin20:40:321
1146899607,39cyclictest31772-21find23:05:340
1146899605,40cyclictest6595-21fw_packets20:25:210
11468996019,18cyclictest14-21ksoftirqd/020:38:290
1147299598,25cyclictest19054-21taskset19:30:111
11472995910,21cyclictest31941-21awk00:35:281
1146899597,33cyclictest14-21ksoftirqd/023:42:210
1146899596,44cyclictest0-21swapper/020:15:110
11468995919,19cyclictest14-21ksoftirqd/023:50:250
11468995912,16cyclictest14-21ksoftirqd/020:45:160
1146899589,11cyclictest14-21ksoftirqd/019:23:370
1146899587,22cyclictest14-21ksoftirqd/020:35:010
1146899585,47cyclictest0-21swapper/023:39:000
1146899585,47cyclictest0-21swapper/023:39:000
1146899583,23cyclictest14-21ksoftirqd/000:35:110
11468995821,19cyclictest14-21ksoftirqd/019:45:390
11468995810,13cyclictest22310-21/usr/sbin/munin22:40:240
1146899579,43cyclictest0-21swapper/021:35:280
1146899576,45cyclictest0-21swapper/022:13:570
1146899576,45cyclictest0-21swapper/022:13:570
1146899575,23cyclictest14-21ksoftirqd/022:39:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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