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2026-04-22 - 11:31
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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 rack8slot4.osadl.org (updated Wed Apr 22, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11172952253186,55sleep20-21swapper/219:08:172
11173832242181,20sleep50-21swapper/519:09:335
11151332240176,19sleep40-21swapper/419:05:054
11173102237173,20sleep60-21swapper/619:08:296
11171612235174,20sleep70-21swapper/719:06:217
11171832229174,19sleep00-21swapper/019:06:380
11171842221191,19sleep10-21swapper/119:06:391
11173812214177,23sleep30-21swapper/319:09:313
12333972670,0sleep40-21swapper/422:40:164
111762799442,40cyclictest118-1kworker/2:1H-kblockd23:25:012
111763399393,18cyclictest1198719-21python321:35:224
111763199351,3cyclictest3986178-21systemd-journal19:30:013
1117637993329,0cyclictest0-21swapper/622:34:516
1117637993228,4cyclictest0-21swapper/620:25:016
111763799320,31cyclictest1199487-21cron21:40:006
111763199322,29cyclictest18-1pr/ttyS019:20:013
111763199320,2cyclictest3986178-21systemd-journal23:20:013
111762799320,30cyclictest1265137-21chrt23:40:142
111762499320,31cyclictest1137206-21cron19:45:010
111763399310,30cyclictest1291905-21systemd-run00:30:024
111763399310,30cyclictest1226708-21unix_chkpwd22:30:014
111763199310,30cyclictest1281449-21http00:10:133
1117625993129,1cyclictest0-21swapper/122:15:011
111763999300,29cyclictest0-21swapper/721:00:017
111763999300,28cyclictest1159300-21apt-get20:25:137
111763999300,28cyclictest1159300-21apt-get20:25:127
111763999300,1cyclictest0-21swapper/720:50:137
1117637993027,3cyclictest761rcuc/600:14:566
111763799300,30cyclictest1120210-21cron19:15:016
1117636993029,1cyclictest1199549-21sendmail-msp21:40:015
1117636993028,1cyclictest1205395-21apt-get21:50:135
1117636993028,1cyclictest1134958-21apt-get19:40:135
111763699300,29cyclictest1257008-21apt-get23:25:125
1117633993028,1cyclictest1169730-21awk20:45:014
1117631993028,1cyclictest1132200-21apt-get19:35:133
111763199300,29cyclictest1262412-21apt-get23:35:143
1117627993026,3cyclictest3986178-21systemd-journal22:45:012
111762799300,0cyclictest0-21swapper/221:05:132
1117625993028,1cyclictest1204925-21apt-get21:50:011
1117625993028,1cyclictest1156599-21apt-get20:20:131
1117625993028,1cyclictest0-21swapper/121:20:141
111762599300,29cyclictest0-21swapper/100:35:011
1117624993028,1cyclictest0-21swapper/020:05:140
111762499300,29cyclictest3986178-21systemd-journal21:55:010
1117639992927,1cyclictest1151174-21apt-get20:10:137
111763999290,28cyclictest1267833-21apt-get23:45:137
111763999290,28cyclictest1267833-21apt-get23:45:137
111763999290,28cyclictest1251577-21apt-get23:15:147
111763999290,28cyclictest0-21swapper/719:30:127
111763999290,28cyclictest0-21swapper/719:20:127
111763999290,1cyclictest1213160-21appstreamcli22:05:027
1117637992929,0cyclictest0-21swapper/600:00:016
111763799290,28cyclictest0-21swapper/620:05:146
111763799290,1cyclictest1202214-21cron21:45:026
111763699290,28cyclictest1265134-21apt-get23:40:135
111763699290,28cyclictest1235350-21apt-get22:45:125
111763699290,28cyclictest0-21swapper/522:35:135
111763699290,28cyclictest0-21swapper/522:15:055
111763699290,1cyclictest1284145-21apt-get00:15:125
111763699290,1cyclictest1205124-21sed21:50:015
111763699290,1cyclictest1162000-21apt-get20:30:125
111763699290,1cyclictest1162000-21apt-get20:30:125
1117633992927,1cyclictest1286870-21apt-get00:20:134
1117633992927,1cyclictest1246180-21apt-get23:05:144
1117633992927,1cyclictest0-21swapper/422:35:014
111763399290,29cyclictest0-21swapper/423:04:564
111763399290,29cyclictest0-21swapper/423:04:564
111763399290,28cyclictest0-21swapper/420:55:134
111763399290,28cyclictest0-21swapper/420:35:144
111763399290,28cyclictest0-21swapper/420:10:134
111763399290,28cyclictest0-21swapper/420:05:144
111763399290,28cyclictest0-21swapper/419:45:124
111763399290,1cyclictest1281445-21apt-get00:10:134
111763399290,1cyclictest1194141-21appstreamcli21:30:024
1117631992928,1cyclictest1232119-21cron22:40:013
1117631992928,1cyclictest0-21swapper/322:40:133
1117631992928,1cyclictest0-21swapper/322:15:013
1117631992928,0cyclictest0-21swapper/300:00:133
1117631992927,1cyclictest0-21swapper/320:00:133
111763199290,28cyclictest0-21swapper/321:55:133
111763199290,28cyclictest0-21swapper/321:10:143
111763199290,28cyclictest0-21swapper/320:15:133
111763199290,28cyclictest0-21swapper/300:20:133
1117627992927,1cyclictest1218598-21appstreamcli22:15:042
1117627992927,1cyclictest1194536-21apt-get21:30:132
1117627992927,1cyclictest0-21swapper/220:40:122
111762799290,28cyclictest0-21swapper/223:30:132
111762799290,28cyclictest0-21swapper/223:15:132
111762799290,28cyclictest0-21swapper/221:10:152
111762799290,28cyclictest0-21swapper/220:30:132
111762799290,28cyclictest0-21swapper/220:30:122
1117625992928,1cyclictest0-21swapper/122:30:121
1117625992927,1cyclictest1286870-21apt-get00:20:131
1117625992927,1cyclictest1186366-21apt-get21:15:141
1117625992927,1cyclictest0-21swapper/122:25:051
1117625992927,1cyclictest0-21swapper/120:00:131
1117625992927,1cyclictest0-21swapper/119:55:131
1117625992926,2cyclictest1229409-21cron22:39:571
111762599290,28cyclictest1117950-21apt-get19:10:111
111762599290,28cyclictest0-21swapper/122:15:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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