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2026-09-22 - 10:36
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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 Tue Sep 22, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180329222900,1sleep10-21swapper/123:45:191
1400806992926,1cyclictest0-21swapper/323:10:003
1400806992825,1cyclictest0-21swapper/320:20:203
1400806992724,1cyclictest0-21swapper/323:20:003
1400806992724,1cyclictest0-21swapper/323:20:003
1400806992724,1cyclictest0-21swapper/320:20:013
1400806992623,1cyclictest0-21swapper/321:55:163
1400806992623,1cyclictest0-21swapper/320:00:253
1400806992320,1cyclictest0-21swapper/323:00:203
1400806992219,1cyclictest0-21swapper/321:05:263
1400806992219,1cyclictest0-21swapper/319:40:173
1400806992219,1cyclictest0-21swapper/300:00:443
140080699212,14cyclictest1875425-21taskset00:31:183
1400806992118,1cyclictest0-21swapper/323:40:193
1400806992118,1cyclictest0-21swapper/321:40:203
1400806992118,1cyclictest0-21swapper/321:00:123
1400806992118,1cyclictest0-21swapper/300:20:143
1400806992018,1cyclictest0-21swapper/321:25:013
1400806992017,1cyclictest0-21swapper/323:35:153
1400806992017,1cyclictest0-21swapper/322:40:193
140080699201,15cyclictest1658303-21taskset22:15:123
140080699201,15cyclictest1459554-21taskset19:50:233
14006632201,7sleep01-21systemd19:10:000
140080699192,13cyclictest1721909-21taskset22:55:183
1400806991916,1cyclictest0-21swapper/323:20:163
1400806991916,1cyclictest0-21swapper/323:20:163
1400806991916,1cyclictest0-21swapper/321:50:013
1400806991916,1cyclictest0-21swapper/320:45:173
1400806991916,1cyclictest0-21swapper/320:40:183
140080699191,14cyclictest1853327-21taskset00:19:563
140080699191,13cyclictest1836571-21chrt00:06:343
140080699191,13cyclictest1744200-21taskset23:10:003
140080699191,13cyclictest1712950-21taskset22:50:003
140080699191,13cyclictest1473506-21chrt20:05:133
140080699187,8cyclictest1603343-21turbostat21:40:013
1400806991816,1cyclictest0-21swapper/321:15:013
1400806991815,1cyclictest0-21swapper/323:55:143
1400806991815,1cyclictest0-21swapper/323:50:003
1400806991815,1cyclictest0-21swapper/322:30:173
1400806991815,1cyclictest0-21swapper/320:54:593
1400806991815,1cyclictest0-21swapper/320:40:023
1400806991814,1cyclictest0-21swapper/322:20:153
140080699181,14cyclictest1585493-21chrt21:25:233
140080699181,14cyclictest1585493-21chrt21:25:223
140080699181,13cyclictest1884593-21turbostat00:40:003
140080699181,13cyclictest1845555-21turbostat00:15:003
140080699181,13cyclictest1781630-21taskset23:30:543
140080699181,13cyclictest1710551-21taskset22:45:243
140080699181,13cyclictest1679825-21taskset22:25:273
140080699181,13cyclictest1511405-21taskset20:34:443
140080699181,13cyclictest1441313-21sleep19:40:013
140080699181,13cyclictest1406784-21taskset19:10:513
140080699181,12cyclictest1861563-21chrt00:25:143
1400806991714,1cyclictest0-21swapper/322:05:153
1400806991714,1cyclictest0-21swapper/322:00:203
140080699171,13cyclictest1692081-21taskset22:35:183
140080699171,13cyclictest1569645-21taskset21:15:203
140080699171,13cyclictest1543203-21taskset20:58:293
140080699171,13cyclictest1430263-21taskset19:30:183
140080699171,12cyclictest1624422-21chrt21:50:203
140080699171,12cyclictest1460692-21taskset19:55:113
14563372167,6sleep11458191-21grep19:50:181
140080699162,11cyclictest1421825-21taskset19:21:053
1400806991614,1cyclictest0-21swapper/323:25:133
140080699161,12cyclictest1806867-21taskset23:50:023
140080699161,12cyclictest1656449-21taskset22:10:483
140080699161,12cyclictest1594378-21taskset21:31:593
140080699161,12cyclictest1504148-21taskset20:25:213
140080699161,12cyclictest1453760-21taskset19:46:103
140080699161,12cyclictest1409510-21taskset19:15:073
140080699161,11cyclictest1485574-21taskset20:10:593
140080699161,11cyclictest1422442-21chrt19:25:143
140080699161,11cyclictest1422442-21chrt19:25:133
16036882141,9sleep11603373-21sendmail-msp21:40:131
18287852131,9sleep21822260-21sendmail-msp00:01:272
15444292131,9sleep01545055-21/usr/sbin/munin21:00:190
15232592131,4sleep11523298-21ntpq20:40:231
18606962121,8sleep11860700-21ssh00:23:361
17365112123,5sleep11736535-21apt-get23:05:151
16401452121,7sleep01640190-21ntpq22:00:240
15697502121,8sleep11569795-21ntpq21:15:221
15632912120,5sleep00-21swapper/021:12:580
15372622120,9sleep01537345-21expr20:55:130
18667332110,1sleep00-21swapper/000:25:230
18539172111,7sleep21854118-21hddtemp_smartct00:20:162
17912052110,8sleep21791209-21ssh23:40:042
16882842110,8sleep11688290-21ssh22:32:151
16714062111,7sleep11665797-21sendmail-msp22:20:201
15521902111,7sleep21554053-21grep21:05:182
15181072111,7sleep01518260-21df_inode20:40:140
15049402111,8sleep01504942-21sshd-auth20:28:290
14474002110,7sleep01441332-21sendmail-msp19:41:070
14159842110,8sleep21416026-21grep19:20:132
18761762100,7sleep11876181-21ssh00:33:221
18385032100,7sleep21838854-21irqcore00:10:172
17506392100,7sleep01750643-21ssh23:11:520
17246532100,1sleep10-21swapper/122:55:201
17211932100,7sleep21721898-21ssh22:55:182
16133972100,7sleep21615208-21kthreadcore21:45:182
16030522100,3sleep21603058-21ssh21:39:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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