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2025-12-16 - 00:13
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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 Mon Dec 15, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18952782239181,19sleep60-21swapper/607:05:126
18955342224167,19sleep70-21swapper/707:08:497
18956052221188,21sleep30-21swapper/307:09:503
18952852219164,17sleep20-21swapper/207:05:152
18954312217186,20sleep00-21swapper/007:07:230
18953242217188,19sleep50-21swapper/507:05:515
18953942216162,18sleep10-21swapper/107:06:511
18955042215187,18sleep40-21swapper/407:08:224
189584699502,24cyclictest0-21swapper/207:59:582
1895861993327,5cyclictest1-21systemd08:35:017
189585599320,31cyclictest0-21swapper/512:18:175
189585599320,31cyclictest0-21swapper/510:00:025
189585299323,29cyclictest581rcuc/408:00:014
189585099320,3cyclictest1961863-21dump-pmu-power09:10:013
189585099320,3cyclictest1961863-21dump-pmu-power09:10:013
189584699321,30cyclictest369-21systemd-journal07:20:012
1895861993127,3cyclictest0-21swapper/708:58:157
1895859993127,3cyclictest2054203-21sh12:00:006
189585099310,29cyclictest1973539-21apt-get09:33:153
189584699310,30cyclictest1942998-21sh08:35:022
189584499310,29cyclictest0-21swapper/108:18:161
1895840993127,3cyclictest1915935-21http07:48:160
189584099310,29cyclictest2067684-21idleruntime-cro12:25:000
1895861993028,2cyclictest0-21swapper/709:53:167
1895861993027,3cyclictest0-21swapper/707:38:157
1895861993026,3cyclictest2000083-21sh10:20:027
189585999300,29cyclictest1975586-21idleruntime-cro09:35:026
189585999300,29cyclictest0-21swapper/610:03:166
1895852993028,1cyclictest0-21swapper/411:10:004
1895852993026,3cyclictest2005485-21dump-pmu-power10:30:024
189585099300,29cyclictest2048831-21idleruntime-cro11:50:013
189585099300,29cyclictest0-21swapper/311:18:173
189584699300,29cyclictest369-21systemd-journal11:15:002
1895844993028,1cyclictest2006124-21apt-get10:33:151
1895844993026,3cyclictest1989312-21apt10:00:011
189584099300,29cyclictest369-21systemd-journal09:25:020
189584099300,29cyclictest2002794-21debian-sa110:25:020
189584099300,29cyclictest1-21systemd11:20:000
189584099300,29cyclictest0-21swapper/009:15:010
189586199290,28cyclictest2008181-21munin-run10:35:017
189586199290,28cyclictest1965454-21apt-get09:18:157
189586199290,28cyclictest1915931-21apt-get07:48:167
189586199290,28cyclictest0-21swapper/710:43:167
1895859992927,1cyclictest1918877-21apt-get07:53:156
189585999290,29cyclictest2032414-21munin-run11:20:006
189585999290,28cyclictest1923892-21munin-run08:00:016
189585999290,28cyclictest0-21swapper/612:08:166
189585999290,1cyclictest2000747-21apt-get10:23:176
1895855992922,6cyclictest2000076-21cron10:20:015
189585599290,28cyclictest0-21swapper/507:53:135
189585599290,28cyclictest0-21swapper/507:33:165
189585299290,28cyclictest0-21swapper/410:23:164
189585299290,1cyclictest0-21swapper/412:38:174
189585299290,1cyclictest0-21swapper/409:38:164
1895850992928,1cyclictest0-21swapper/308:53:173
1895850992926,2cyclictest369-21systemd-journal09:50:023
189585099290,28cyclictest0-21swapper/309:58:143
189585099290,28cyclictest0-21swapper/309:18:163
189584699290,28cyclictest2062933-21apt-get12:18:172
189584699290,28cyclictest0-21swapper/211:33:132
189584699290,28cyclictest0-21swapper/210:48:162
189584699290,28cyclictest0-21swapper/209:48:162
189584699290,28cyclictest0-21swapper/207:33:162
1895844992927,1cyclictest2013597-21awk10:45:021
1895844992927,1cyclictest0-21swapper/112:03:171
1895844992926,2cyclictest1926600-21munin-run08:05:001
189584499290,28cyclictest1912641-21systemd-run07:40:001
1895840992928,1cyclictest0-21swapper/007:23:170
189584099290,28cyclictest0-21swapper/012:28:150
189584099290,28cyclictest0-21swapper/008:30:010
189584099290,28cyclictest0-21swapper/007:55:030
189584099290,28cyclictest0-21swapper/007:13:130
1895861992826,2cyclictest0-21swapper/709:03:177
1895861992826,2cyclictest0-21swapper/709:03:167
1895861992825,2cyclictest2035104-21sh11:25:007
1895861992823,1cyclictest2062289-21turbostat.cron12:15:007
189586199280,0cyclictest0-21swapper/709:43:167
189585999280,27cyclictest0-21swapper/607:48:156
189585999280,0cyclictest0-21swapper/608:48:176
1895855992827,1cyclictest0-21swapper/508:35:015
1895855992827,1cyclictest0-21swapper/507:58:165
1895855992825,2cyclictest1967500-21turbostat.cron09:20:015
189585599280,0cyclictest0-21swapper/512:03:165
1895852992825,2cyclictest2059601-21apt12:10:004
1895852992824,3cyclictest369-21systemd-journal11:30:004
189585299280,28cyclictest1995347-21apt-get10:13:154
189585299280,28cyclictest0-21swapper/411:58:164
189585299280,28cyclictest0-21swapper/411:05:004
189585299280,28cyclictest0-21swapper/409:03:164
189585299280,28cyclictest0-21swapper/409:03:164
189585299280,28cyclictest0-21swapper/408:43:154
189585299280,0cyclictest0-21swapper/410:33:174
1895850992828,0cyclictest0-21swapper/309:13:183
189585099280,0cyclictest0-21swapper/311:03:173
189584699280,28cyclictest0-21swapper/211:25:012
189584699280,28cyclictest0-21swapper/209:10:022
189584699280,28cyclictest0-21swapper/209:10:012
1895844992828,0cyclictest0-21swapper/111:28:171
1895844992828,0cyclictest0-21swapper/110:03:151
189584499280,27cyclictest0-21swapper/111:13:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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