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2025-04-22 - 02:53
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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 rackeslot8.osadl.org (updated Mon Apr 21, 2025 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
156466321020,1sleep30-21swapper/311:40:183
14124722340,1sleep20-21swapper/209:50:342
1213463993027,2cyclictest501-21dbus-daemon12:30:001
1213463992825,2cyclictest1478102-21idleruntime-cro10:40:001
1213463992824,3cyclictest501-21dbus-daemon08:20:001
1213467992623,2cyclictest1252273-21idleruntime-cro07:40:012
12824402230,1chrt0-21swapper/208:00:282
1213469992320,1cyclictest0-21swapper/307:20:013
1213467992320,2cyclictest508-21polkitd09:00:012
1213467992320,2cyclictest277-21plymouthd11:00:002
1213467992320,2cyclictest1422895-21sendmail10:00:002
1213461992320,2cyclictest1351329-21munin-plugin-st09:10:000
1213467992219,2cyclictest3004-21cron08:55:002
1213467992219,2cyclictest0-21swapper/209:25:012
1213469992118,1cyclictest0-21swapper/311:20:003
1213467992118,2cyclictest1367903-21sendmail09:20:012
1213461992118,2cyclictest0-21swapper/012:05:000
1213469992016,1cyclictest0-21swapper/312:20:003
1213467992017,2cyclictest1424611-21kthreadcore10:00:212
1213467992016,3cyclictest1-21systemd11:30:012
1213467992015,3cyclictest1379068-21idleruntime-cro09:30:012
1213469991916,1cyclictest0-21swapper/312:35:223
1213469991916,1cyclictest0-21swapper/309:05:003
1213469991912,4cyclictest1295207-21turbostat08:15:003
1213467991915,3cyclictest522-21in:imuxsock10:20:002
1213467991915,3cyclictest1354978-21sh09:10:142
1213463991916,2cyclictest1396308-21irqcore09:40:171
1213463991915,3cyclictest547-21gdbus12:00:001
1213463991915,2cyclictest0-21swapper/110:25:001
1213463991913,4cyclictest1307777-21cut08:25:131
1213461991916,2cyclictest0-21swapper/012:00:000
1213461991915,2cyclictest1622055-21awk12:25:000
1213461991915,2cyclictest1622055-21awk12:25:000
1213469991815,1cyclictest0-21swapper/311:35:133
1213469991815,1cyclictest0-21swapper/310:55:003
1213469991815,1cyclictest0-21swapper/310:20:003
1213469991815,1cyclictest0-21swapper/309:10:003
1213469991815,1cyclictest0-21swapper/308:50:013
121346799189,6cyclictest501-21dbus-daemon08:45:002
1213467991815,2cyclictest1570537-21latency_hist11:50:002
1213467991815,2cyclictest1521711-21needreboot11:10:152
1213467991815,2cyclictest1301303-21latency_hist08:20:002
1213467991815,2cyclictest0-21swapper/209:40:012
1213467991814,2cyclictest1470096-21latency_hist10:35:012
1213467991813,3cyclictest1245974-21sh07:35:012
1213467991813,3cyclictest1-21systemd07:59:182
1213463991816,1cyclictest0-21swapper/112:10:001
1213463991816,1cyclictest0-21swapper/107:15:011
1213463991815,2cyclictest1628106-21kthreadcore12:30:141
1213463991815,2cyclictest1461755-21latency_hist10:30:011
1213463991815,1cyclictest1277299-21tr08:00:151
1213461991815,2cyclictest3561480-21systemd-journal07:50:000
1213461991813,3cyclictest1265845-21grep07:50:190
16129882170,1sleep244-21ksoftirqd/212:18:092
1213469991714,1cyclictest0-21swapper/312:15:003
1213469991714,1cyclictest0-21swapper/309:15:003
1213469991713,1cyclictest0-21swapper/307:35:013
121346999170,13cyclictest0-21swapper/308:45:003
1213467991714,2cyclictest1-21systemd11:35:172
121346799171,14cyclictest1458763-21munin-run10:25:002
1213463991714,2cyclictest3004-21cron12:40:001
1213463991714,2cyclictest1295225-21systemd-run08:15:001
1213463991714,2cyclictest0-21swapper/109:50:001
1213463991714,1cyclictest0-21swapper/110:05:001
1213463991713,2cyclictest1359801-21latency_hist09:15:011
1213463991713,2cyclictest0-21swapper/109:15:131
1213463991710,5cyclictest3561480-21systemd-journal09:50:171
1213461991714,2cyclictest1613930-21/usr/sbin/munin12:20:000
1213461991714,2cyclictest1529986-21needreboot11:15:210
1213461991714,2cyclictest1401449-21timerwakeupswit09:40:390
1213461991713,3cyclictest231rcuc/010:20:000
1213461991710,5cyclictest3561480-21systemd-journal08:15:000
1213469991613,1cyclictest0-21swapper/310:40:163
1213469991613,1cyclictest0-21swapper/310:30:003
1213469991613,1cyclictest0-21swapper/310:20:223
1213469991613,1cyclictest0-21swapper/310:00:203
1213469991613,1cyclictest0-21swapper/309:35:013
1213469991613,1cyclictest0-21swapper/309:20:343
1213469991613,1cyclictest0-21swapper/309:15:233
1213469991613,1cyclictest0-21swapper/308:55:223
1213469991613,1cyclictest0-21swapper/308:40:013
1213469991613,1cyclictest0-21swapper/307:45:183
1213469991613,1cyclictest0-21swapper/307:27:543
1213469991612,1cyclictest0-21swapper/311:00:003
1213467991613,2cyclictest1614600-21idleruntime12:20:142
1213467991613,2cyclictest1614600-21idleruntime12:20:142
1213467991613,2cyclictest1264049-21unixbench_singl07:45:252
1213467991613,2cyclictest0-21swapper/211:30:132
1213467991612,3cyclictest1320260-21irqcore08:35:162
1213467991612,3cyclictest1222061-21fschecks_time07:15:152
1213467991612,2cyclictest0-21swapper/211:40:142
1213467991611,3cyclictest1436184-21kthreadcore10:10:192
1213467991611,3cyclictest1313515-21munin-run08:30:002
1213463991613,2cyclictest1561403-21sort11:40:171
1213463991613,2cyclictest1434095-21systemd-run10:10:001
1213463991613,2cyclictest1376099-21cron09:25:011
1213463991612,3cyclictest1610131-21kthreadcore12:15:201
1213463991612,2cyclictest0-21swapper/108:25:001
1213463991611,4cyclictest1507609-21cat11:00:151
1213463991611,4cyclictest1246505-21fschecks_time07:35:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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