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2026-05-21 - 22:37
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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 Thu May 21, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
116365322490,19sleep70-21swapper/707:05:227
11644112238178,20sleep20-21swapper/207:09:532
11641442233170,19sleep40-21swapper/407:06:014
11641812221192,19sleep30-21swapper/307:06:313
11643362213184,19sleep10-21swapper/107:08:471
11641172211183,18sleep50-21swapper/507:05:385
11643532209180,19sleep00-21swapper/007:09:030
11642492201173,18sleep60-21swapper/607:07:326
1164620994140,1cyclictest0-21swapper/008:05:010
1164620994140,1cyclictest0-21swapper/008:05:010
1164627993624,11cyclictest1223766-21sqv08:55:013
116463799340,32cyclictest1176816-21taskset07:30:117
116463799330,31cyclictest1299452-21apt-get11:10:117
116463699320,31cyclictest1-21systemd10:50:016
116463699320,31cyclictest1218607-21http08:45:136
116462599320,31cyclictest1310499-21cut11:30:012
116462599320,31cyclictest1-21systemd09:20:012
116463699310,30cyclictest1-21systemd10:00:016
116463399310,31cyclictest1315763-21cron11:40:015
116463399310,31cyclictest1315763-21cron11:40:015
116463199310,30cyclictest1167296-21cron07:15:014
1164627993127,3cyclictest0-21swapper/311:30:003
116462799310,30cyclictest1305065-21apt-get11:20:113
116463799300,2cyclictest1291098-21apt-get10:55:107
116463799300,29cyclictest17850irq/4-ttyS009:45:027
116463799300,29cyclictest1315772-21unix_chkpwd11:40:017
116463799300,29cyclictest1315772-21unix_chkpwd11:40:007
116463799300,29cyclictest0-21swapper/712:08:067
116463799300,29cyclictest0-21swapper/710:25:057
1164636993027,2cyclictest0-21swapper/609:20:026
1164633993028,1cyclictest0-21swapper/510:45:115
116463399300,2cyclictest1276744-21cron10:30:005
1164623993028,1cyclictest0-21swapper/108:10:111
1164637992927,1cyclictest0-21swapper/709:30:117
116463799290,29cyclictest0-21swapper/712:05:017
116463799290,29cyclictest0-21swapper/708:30:117
116463799290,28cyclictest0-21swapper/712:15:137
116463799290,28cyclictest0-21swapper/710:40:107
116463799290,28cyclictest0-21swapper/709:13:547
116463799290,28cyclictest0-21swapper/707:35:097
1164636992928,1cyclictest0-21swapper/612:35:116
116463699290,28cyclictest0-21swapper/609:50:136
116463699290,28cyclictest0-21swapper/609:35:106
116463699290,28cyclictest0-21swapper/609:20:126
116463699290,28cyclictest0-21swapper/607:30:016
116463699290,28cyclictest0-21swapper/607:20:126
116463699290,1cyclictest1316270-21apt-get11:40:116
116463699290,1cyclictest1316270-21apt-get11:40:106
116463699290,1cyclictest1223720-21apt-get08:55:056
116463699290,1cyclictest1207082-21908:25:016
1164633992928,0cyclictest0-21swapper/510:30:125
1164633992927,1cyclictest0-21swapper/507:30:115
1164633992927,1cyclictest0-21swapper/507:25:145
116463399290,29cyclictest1-21systemd09:30:025
116463399290,28cyclictest0-21swapper/512:10:125
116463399290,28cyclictest0-21swapper/508:40:115
116463399290,28cyclictest0-21swapper/507:35:095
116463399290,28cyclictest0-21swapper/507:20:115
116463399290,1cyclictest1327445-21apt-get12:00:115
116463399290,1cyclictest0-21swapper/511:00:115
1164631992927,1cyclictest1260457-21apt-get10:00:134
116463199290,29cyclictest1329839-21unin-run12:05:014
116463199290,28cyclictest0-21swapper/410:35:124
116463199290,28cyclictest0-21swapper/409:55:114
116463199290,28cyclictest0-21swapper/407:30:084
116463199290,1cyclictest1277184-21apt-get10:30:114
1164627992926,3cyclictest0-21swapper/310:06:033
1164627992925,4cyclictest0-21swapper/309:40:103
116462799290,29cyclictest1346519-21912:35:013
116462799290,28cyclictest0-21swapper/312:35:113
116462799290,28cyclictest0-21swapper/310:10:113
116462799290,28cyclictest0-21swapper/309:00:113
116462799290,1cyclictest0-21swapper/309:00:013
1164625992928,1cyclictest0-21swapper/212:20:112
116462599290,29cyclictest1313050-21911:35:002
116462599290,28cyclictest1316270-21apt-get11:40:112
116462599290,28cyclictest1316270-21apt-get11:40:112
116462599290,28cyclictest0-21swapper/211:50:092
116462599290,28cyclictest0-21swapper/210:20:132
116462599290,28cyclictest0-21swapper/208:20:012
116462599290,28cyclictest0-21swapper/207:55:122
116462599290,1cyclictest1321428-21awk11:50:012
116462599290,1cyclictest1321428-21awk11:50:012
116462599290,1cyclictest0-21swapper/208:55:112
1164623992928,1cyclictest36-21ksoftirqd/110:05:011
1164623992928,1cyclictest0-21swapper/110:50:111
1164623992928,1cyclictest0-21swapper/108:30:111
1164623992927,1cyclictest1282765-21apt-get10:40:101
1164623992927,1cyclictest1207027-21cron08:25:011
116462399290,28cyclictest0-21swapper/112:00:011
116462399290,28cyclictest0-21swapper/111:30:101
116462399290,28cyclictest0-21swapper/111:05:011
116462399290,28cyclictest0-21swapper/109:35:251
116462399290,28cyclictest0-21swapper/108:40:101
116462399290,28cyclictest0-21swapper/108:35:111
116462399290,28cyclictest0-21swapper/107:20:111
116462399290,28cyclictest0-21swapper/107:10:111
1164620992928,1cyclictest966-21rs:main0
1164620992924,4cyclictest279850-21systemd-journal12:15:000
116462099290,28cyclictest107-21kcompactd007:21:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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