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2026-05-08 - 10:50
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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 highest latencies:
System rack3slot6.osadl.org (updated Fri May 08, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1060210118,37sleep00-21swapper/019:06:300
128342870,4chrt36-21kcompactd000:10:551
322602855,33sleep132313-21cut19:05:141
1596998551,26cyclictest562-21runrttasks19:35:141
1596998231,18cyclictest0-21swapper/123:30:161
1596998151,15cyclictest5680-21apt-get19:20:141
1596997850,14cyclictest23513-21apt-get20:10:121
1596997740,26cyclictest8343-21apt-get22:30:141
1596997649,14cyclictest802-21apt-get23:40:131
1596997644,17cyclictest15162-21apt-get00:20:161
1596997548,14cyclictest17407-21apt-get22:55:121
1596997539,26cyclictest18634-21apt-get00:30:121
1596997444,15cyclictest9867-21apt-get00:05:111
159199745,58cyclictest1659-21apt-get19:10:120
1596997349,15cyclictest3365-21apt-get20:45:131
1596997347,14cyclictest1659-21apt-get19:10:141
1596997325,43cyclictest0-21swapper/100:25:141
1591997344,18cyclictest14-21ksoftirqd/021:10:110
1596997146,13cyclictest16486-21apt-get19:50:111
1596997140,23cyclictest6600-21seq22:25:111
1596997054,10cyclictest26-21ksoftirqd/119:25:231
1591996912,48cyclictest0-21swapper/021:15:140
1596996839,23cyclictest26557-21cat23:20:231
1596996833,27cyclictest16766-21grep22:50:371
1596996832,26cyclictest11096-21ntp_kernel_err22:35:391
1596996824,38cyclictest0-21swapper/119:35:011
159199686,18cyclictest9867-21apt-get00:05:130
1591996813,45cyclictest10644-21apt-get21:05:120
1596996749,10cyclictest26-21ksoftirqd/120:20:111
1596996740,18cyclictest6340-21apt-get23:55:151
1596996737,23cyclictest15274-21unixbench_singl21:15:361
1596996737,19cyclictest12260-21diskmemload21:10:011
1596996734,24cyclictest21154-21/usr/sbin/munin21:35:171
1596996732,25cyclictest19163-21/usr/sbin/munin23:00:181
159199673,17cyclictest20303-21users23:00:370
1596996637,20cyclictest3802-21awk22:15:321
1596996636,16cyclictest8903-21apt-get21:00:241
1596996635,26cyclictest18698-21uname19:55:251
1596996635,25cyclictest243-21systemd-journal23:30:001
1596996635,23cyclictest29944-21/usr/sbin/munin22:00:151
1596996632,24cyclictest28836-21aten2.4_r3power20:25:161
1596996626,34cyclictest503-21snmpd19:15:481
1596996540,15cyclictest21722-21apt-get20:05:121
1596996539,19cyclictest6423-21munin-run22:25:001
1596996539,17cyclictest503-21snmpd20:00:551
1596996538,20cyclictest457-21dbus-daemon20:40:001
1596996536,15cyclictest1052-21apt-get22:10:131
1596996535,25cyclictest243-21systemd-journal23:20:001
1596996535,23cyclictest16322-21basename19:50:001
1596996534,16cyclictest28185-21apt-get21:55:111
80942640,6chrt7927-40mandb00:00:030
1596996445,9cyclictest26-21ksoftirqd/119:40:121
1596996436,23cyclictest885-21apache200:00:041
1596996436,15cyclictest1626-21apt-get20:40:141
1596996435,15cyclictest31422-21apt-get23:35:131
1596996434,21cyclictest12799-21needreboot22:40:261
1596996434,15cyclictest26448-21apt-get21:50:141
1596996433,25cyclictest243-21systemd-journal21:35:001
1596996433,23cyclictest21150-21taskset00:35:341
1596996432,23cyclictest503-21snmpd20:31:021
1596996431,24cyclictest13466-21aten2.4_r3power00:15:161
1596996430,28cyclictest17502-21munin-plugin-st21:25:001
1596996430,24cyclictest31813-21aten2.4_r3power22:05:161
1591996425,19cyclictest30825-21df20:30:180
1596996336,22cyclictest18940-21taskset21:26:511
1596996336,21cyclictest2552-21apt-get23:45:121
1596996335,19cyclictest243-21systemd-journal23:50:101
1596996333,24cyclictest12920-21uname21:10:241
1596996333,19cyclictest26-21ksoftirqd/120:55:131
1596996332,25cyclictest26951-21wc20:20:011
1596996332,24cyclictest24708-21/usr/sbin/munin21:45:281
1596996241,13cyclictest503-21snmpd23:10:161
1596996232,23cyclictest21172-21grep23:05:181
1596996231,24cyclictest14799-21switchtime22:45:341
1596996231,23cyclictest23859-21switchtime21:40:361
1596996139,12cyclictest26-21ksoftirqd/120:50:121
1591996121,24cyclictest7225-21if_enp2s020:55:220
159199603,43cyclictest16826-21df_inode19:50:190
1591995934,20cyclictest14-21ksoftirqd/022:35:310
1591995924,20cyclictest11198-21apt-get19:35:140
159199592,15cyclictest14-21ksoftirqd/020:28:570
1591995914,39cyclictest19009-21sendmail-msp23:00:000
1218825911,29sleep00-21swapper/022:40:120
159199585,45cyclictest13394-21apt-get00:15:140
1591995836,15cyclictest14-21ksoftirqd/023:30:300
1591995832,20cyclictest457-21dbus-daemon00:15:000
1591995822,24cyclictest0-21swapper/022:30:150
159199579,43cyclictest0-21swapper/020:00:230
159199577,32cyclictest14-21ksoftirqd/023:14:000
1591995728,20cyclictest4284-21apt-get23:50:120
159199572,48cyclictest28696-21seq20:25:020
159199572,23cyclictest16649-21seq00:24:180
1591995720,32cyclictest32522-21expr20:35:170
1591995719,23cyclictest18788-21sed21:25:360
159199565,45cyclictest0-21swapper/000:36:330
159199563,11cyclictest14-21ksoftirqd/022:53:150
1591995620,21cyclictest0-21swapper/021:35:130
159199559,40cyclictest0-21swapper/022:45:190
1591995530,18cyclictest14-21ksoftirqd/021:20:150
1591995525,12cyclictest14-21ksoftirqd/019:15:170
1591995524,25cyclictest14-21ksoftirqd/021:55:160
159199552,15cyclictest14-21ksoftirqd/000:00:380
1591995521,28cyclictest0-21swapper/022:10:130
1591995520,21cyclictest0-21swapper/019:30:130
1591995519,23cyclictest0-21swapper/020:40:120
1591995518,23cyclictest0-21swapper/000:30:120
1591995515,34cyclictest457-21dbus-daemon21:32:060
159199549,40cyclictest0-21swapper/000:25:250
159199545,10cyclictest0-21swapper/019:20:170
1591995422,25cyclictest0-21swapper/019:45:140
159199537,12cyclictest14-21ksoftirqd/020:54:000
159199537,12cyclictest14-21ksoftirqd/020:12:570
159199535,42cyclictest0-21swapper/023:09:030
159199533,44cyclictest8903-21apt-get21:00:160
1591995332,15cyclictest0-21swapper/023:45:120
1591995322,26cyclictest0-21swapper/020:15:140
159199524,43cyclictest0-21swapper/022:23:410
1591995236,10cyclictest14-21ksoftirqd/023:40:000
159199523,43cyclictest481-21gdbus23:30:000
1591995226,21cyclictest14-21ksoftirqd/019:40:330
1591995222,22cyclictest24712-21apt-get21:45:130
1591995221,26cyclictest0-21swapper/023:15:130
1591995220,25cyclictest0-21swapper/019:55:130
1591995219,27cyclictest14-21ksoftirqd/023:20:160
159199517,13cyclictest14-21ksoftirqd/022:27:250
159199515,41cyclictest0-21swapper/019:25:180
159199515,13cyclictest14-21ksoftirqd/021:52:420
1591995135,11cyclictest1660-21smartctl23:40:330
159199513,11cyclictest3710-21diskstats20:45:210
1591995127,18cyclictest457-21dbus-daemon22:10:000
1591995122,20cyclictest22972-21apt-get21:40:150
1591995121,23cyclictest0-21swapper/022:00:120
1591995116,20cyclictest0-21swapper/020:05:260
159199495,39cyclictest0-21swapper/022:15:400
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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