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2025-06-17 - 01:54
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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 50 highest latencies:
System rack8slot4.osadl.org (updated Mon Jun 16, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14224792250195,44sleep50-21swapper/507:08:185
14203722235177,17sleep40-21swapper/407:05:524
14224242228169,46sleep60-21swapper/607:07:306
14203322227169,20sleep20-21swapper/207:05:172
14225152225172,41sleep30-21swapper/307:08:483
14203932224190,21sleep70-21swapper/707:06:117
14203312219188,20sleep10-21swapper/107:05:161
14203302216187,18sleep00-21swapper/007:05:150
142282399322,29cyclictest0-21swapper/310:35:013
142281499320,31cyclictest1202534-21systemd-journal10:15:010
1422832993128,2cyclictest1429010-21dump-pmu-power07:20:016
142283299310,30cyclictest1466728-21sh08:30:006
142282599310,29cyclictest1578747-21sh11:55:014
142282399310,29cyclictest0-21swapper/308:01:223
142281699310,29cyclictest1485582-21turbostat.cron09:05:001
142283299300,29cyclictest0-21swapper/611:16:236
142283099300,29cyclictest1466731-21sh08:30:005
142283099300,29cyclictest1455958-21sh08:10:005
1422825993026,3cyclictest1600279-21sh12:35:004
1422823993028,1cyclictest1540803-21apt-get10:46:243
1422823993028,1cyclictest1501996-21latency_hist09:35:013
142282399300,2cyclictest1425411-21awk07:15:013
142282399300,29cyclictest1512763-21sh09:55:013
142282399300,29cyclictest0-21swapper/307:15:023
1422820993028,1cyclictest0-21swapper/207:31:222
1422820993026,3cyclictest1439795-21latency_hist07:40:002
142282099300,2cyclictest1603223-21cron12:40:002
142282099300,2cyclictest1202534-21systemd-journal08:05:002
142281699300,29cyclictest1538116-21apt-get10:41:231
1422814993028,1cyclictest0-21swapper/011:35:010
1422835992927,1cyclictest1570943-21apt-get11:41:277
142283599290,28cyclictest0-21swapper/708:16:227
142283599290,1cyclictest1542976-21idleruntime-cro10:50:017
1422832992927,1cyclictest1497134-21apt-get09:26:246
142283299290,28cyclictest1486094-21apt-get09:06:266
1422830992927,1cyclictest0-21swapper/512:21:225
1422830992927,1cyclictest0-21swapper/511:01:245
1422830992927,1cyclictest0-21swapper/509:26:245
142283099290,28cyclictest0-21swapper/511:16:235
142283099290,28cyclictest0-21swapper/508:31:225
1422825992927,1cyclictest1445205-21munin-run07:50:004
142282599290,28cyclictest0-21swapper/412:16:264
142282599290,28cyclictest0-21swapper/407:21:234
142282599290,1cyclictest0-21swapper/408:56:244
142282599290,1cyclictest0-21swapper/408:11:254
1422823992927,1cyclictest1584655-21apt-get12:06:243
1422823992927,1cyclictest1559119-21apt-get11:20:013
1422823992927,1cyclictest1538006-21updatedb.plocat10:40:253
1422823992927,1cyclictest1518148-21sh10:05:013
1422823992927,1cyclictest1518148-21sh10:05:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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