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2026-04-09 - 07:46
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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 Thu Apr 09, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171482930,6chrt17145-21cat23:35:340
171482930,6chrt17145-21cat23:35:340
18449998831,34cyclictest2268-21sshd22:55:280
18452998531,39cyclictest26-21ksoftirqd/122:55:261
18449998232,15cyclictest14-21ksoftirqd/021:10:460
18449997647,23cyclictest0-21swapper/000:10:120
17312760,6sleep11736-21grep21:20:361
18449997538,9cyclictest18525-21/usr/sbin/munin19:10:320
18449997531,23cyclictest14-21ksoftirqd/023:30:230
1798127516,48sleep00-21swapper/019:07:020
18449997439,29cyclictest503-21snmpd20:00:370
18449997431,19cyclictest524-21lldpd19:15:360
1844999732,44cyclictest14-21ksoftirqd/023:50:250
18449997310,41cyclictest14428-21cat23:30:020
18452997127,39cyclictest26-21ksoftirqd/120:32:501
18449997040,25cyclictest15073-21telnet20:30:160
18449997020,13cyclictest14-21ksoftirqd/023:56:460
18449997020,13cyclictest14-21ksoftirqd/023:56:460
18449996937,15cyclictest14-21ksoftirqd/022:50:340
18449996936,27cyclictest31445-21telnet21:15:160
18449996936,15cyclictest14-21ksoftirqd/019:45:280
18449996934,22cyclictest14-21ksoftirqd/022:24:170
1798226933,22sleep10-21swapper/119:07:031
22312680,6sleep12233-21cat00:25:261
1845299686,14cyclictest26-21ksoftirqd/100:25:001
18452996826,38cyclictest26-21ksoftirqd/121:58:471
18452996826,38cyclictest26-21ksoftirqd/121:58:471
1844999686,54cyclictest7961-21apt-get20:10:110
18449996836,11cyclictest14-21ksoftirqd/000:30:200
1844999682,39cyclictest16356-21kworker/u8:123:45:190
18449996822,23cyclictest30913-21unixbench_multi19:40:350
18452996734,28cyclictest26-21ksoftirqd/120:48:461
18449996734,11cyclictest14-21ksoftirqd/023:15:350
18449996732,15cyclictest14-21ksoftirqd/022:45:420
18449996725,14cyclictest17123-21basename20:35:260
1845299662,16cyclictest7602-21idleruntime-cro21:40:011
18449996638,22cyclictest14-21ksoftirqd/022:12:520
18449996638,15cyclictest14-21ksoftirqd/020:55:110
18449996634,11cyclictest14-21ksoftirqd/021:50:200
18449996634,11cyclictest14-21ksoftirqd/020:25:340
18449996633,28cyclictest14-21ksoftirqd/023:40:400
18449996623,12cyclictest14-21ksoftirqd/019:35:470
53692650,10sleep1251rcuc/123:05:021
1845299653,12cyclictest1755-21idleruntime-cro22:55:011
1845299652,11cyclictest25674-21sendmail21:00:001
18449996534,10cyclictest14-21ksoftirqd/022:30:200
18449996533,11cyclictest14-21ksoftirqd/021:20:370
18449996533,11cyclictest14-21ksoftirqd/019:20:210
18449996512,12cyclictest171rcuc/019:30:100
18452996437,18cyclictest0-21swapper/123:10:141
18452996435,17cyclictest0-21swapper/122:00:221
18452996417,43cyclictest0-21swapper/123:50:201
18452996412,31cyclictest29199-21diskmemload21:10:241
18449996436,23cyclictest14-21ksoftirqd/021:40:360
18449996435,24cyclictest14-21ksoftirqd/019:50:150
18449996432,11cyclictest14-21ksoftirqd/022:15:360
18449996432,11cyclictest14-21ksoftirqd/022:05:180
18449996432,11cyclictest14-21ksoftirqd/000:15:120
18449996431,11cyclictest14-21ksoftirqd/022:25:220
18449996431,11cyclictest14-21ksoftirqd/000:35:120
18452996339,15cyclictest26-21ksoftirqd/123:35:121
18452996339,15cyclictest26-21ksoftirqd/123:35:111
18452996335,16cyclictest0-21swapper/123:25:111
18452996334,20cyclictest0-21swapper/119:35:261
1844999639,37cyclictest0-21swapper/021:30:170
18449996331,11cyclictest14-21ksoftirqd/020:45:280
18449996329,11cyclictest14-21ksoftirqd/022:00:360
18449996324,9cyclictest3036-21memory21:25:250
1845299629,34cyclictest28879-21apt-get00:10:121
18452996238,15cyclictest0-21swapper/100:35:121
18452996235,16cyclictest0-21swapper/122:30:121
1845299622,13cyclictest26-21ksoftirqd/122:20:001
1844999628,48cyclictest0-21swapper/021:55:130
1844999628,48cyclictest0-21swapper/021:55:130
18449996235,21cyclictest14-21ksoftirqd/000:05:420
18449996230,11cyclictest14-21ksoftirqd/021:45:340
18449996229,12cyclictest14-21ksoftirqd/022:35:200
18449996229,11cyclictest14-21ksoftirqd/000:25:310
18449996227,12cyclictest14-21ksoftirqd/023:10:310
18449996226,14cyclictest14-21ksoftirqd/023:05:050
18449996226,11cyclictest14-21ksoftirqd/022:40:150
1845299616,49cyclictest251rcuc/120:35:051
18452996132,18cyclictest0-21swapper/123:45:141
18452996132,18cyclictest0-21swapper/119:50:101
1845299612,23cyclictest26-21ksoftirqd/121:55:001
1845299612,11cyclictest243-21systemd-journal00:00:001
1845299612,11cyclictest243-21systemd-journal00:00:001
1845299612,10cyclictest5789-21sh21:35:001
18452996119,38cyclictest26-21ksoftirqd/121:40:221
18449996133,19cyclictest14-21ksoftirqd/000:20:140
18449996130,11cyclictest14-21ksoftirqd/021:05:270
18449996130,10cyclictest14-21ksoftirqd/021:00:330
18449996129,11cyclictest14-21ksoftirqd/020:40:300
18449996129,11cyclictest14-21ksoftirqd/019:25:350
18449996116,20cyclictest11130-21runrttasks20:18:370
1845299603,13cyclictest26-21ksoftirqd/122:25:011
1845299603,11cyclictest27405-21munin-run21:05:011
1845299603,11cyclictest23907-21apt20:55:001
18449996027,11cyclictest14-21ksoftirqd/023:20:200
1845299594,8cyclictest151rcu_preempt23:05:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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