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2025-12-15 - 08:01
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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 Dec 15, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1556076993330,1cyclictest0-21swapper/300:20:173
1556076992926,1cyclictest0-21swapper/323:15:003
1556076992724,1cyclictest0-21swapper/320:50:013
1556076992319,1cyclictest0-21swapper/319:15:003
155607699211,15cyclictest1789782-21taskset22:10:133
155607699209,8cyclictest1853464-21sleep23:00:003
1556076992017,1cyclictest0-21swapper/323:19:593
1556076992017,1cyclictest0-21swapper/322:10:013
1556076991916,1cyclictest0-21swapper/323:55:223
155607699191,13cyclictest1808714-21taskset22:25:003
307598180,5rtkit-daemon1597316-21diskstats19:40:122
155607699187,8cyclictest1667403-21sleep20:35:013
155607699181,13cyclictest1911852-21chrt23:45:153
155607699181,13cyclictest1866281-21taskset23:09:563
155607699181,13cyclictest1840965-21chrt22:50:133
1556076991715,1cyclictest0-21swapper/321:44:523
1556076991714,1cyclictest0-21swapper/319:30:133
1556076991714,1cyclictest0-21swapper/300:09:093
155607699171,13cyclictest1944430-21chrt00:10:163
155607699171,13cyclictest1944430-21chrt00:10:163
155607699171,12cyclictest1891919-21sleep23:29:593
155607699171,12cyclictest1802247-21taskset22:19:443
155607699171,12cyclictest1776638-21taskset21:59:553
155607699171,12cyclictest1750454-21taskset21:35:553
155607699171,12cyclictest1718810-21turbostat21:14:593
1556076991613,1cyclictest0-21swapper/323:20:223
1556076991613,1cyclictest0-21swapper/321:49:593
1556076991613,1cyclictest0-21swapper/320:15:173
155607699161,12cyclictest1969947-21taskset00:30:143
155607699161,12cyclictest1904631-21taskset23:35:503
155607699161,12cyclictest1834294-21chrt22:45:003
155607699161,12cyclictest1737965-21chrt21:29:353
155607699161,12cyclictest1687507-21taskset20:50:153
155607699161,12cyclictest1628725-21taskset20:02:343
155607699161,11cyclictest1963637-21taskset00:25:143
155607699161,11cyclictest1950084-21chrt00:15:133
155607699161,11cyclictest1564834-21chrt19:15:113
155607699160,9cyclictest15829102sleep319:25:223
155607699160,8cyclictest17120802sleep321:06:043
155607699160,13cyclictest1593639-21chrt19:35:193
155607699160,13cyclictest1593639-21chrt19:35:183
155607699154,8cyclictest1858429-21chrt23:00:193
155607699152,10cyclictest17769562chrt22:00:133
1556076991513,1cyclictest0-21swapper/321:50:253
1556076991513,1cyclictest0-21swapper/300:37:533
1556076991512,1cyclictest0-21swapper/319:45:233
155607699151,11cyclictest1937019-21taskset00:04:583
155607699151,11cyclictest1840511-21taskset22:47:573
155607699151,11cyclictest1821246-21taskset22:31:493
155607699151,11cyclictest1738517-21taskset21:30:113
155607699151,11cyclictest1724803-21chrt21:15:253
155607699151,11cyclictest1705720-21taskset21:01:173
155607699151,11cyclictest1680000-21taskset20:42:513
155607699151,11cyclictest1660729-21taskset20:27:153
155607699151,11cyclictest1629163-21taskset20:05:043
155607699151,11cyclictest1603066-21taskset19:42:273
1556076991511,1cyclictest0-21swapper/320:55:133
155607699150,12cyclictest1910786-21taskset23:40:213
155607699150,12cyclictest1814732-21chrt22:25:413
155607699150,12cyclictest1654443-21taskset20:24:033
155607699150,12cyclictest1636314-21taskset20:10:173
155607699150,12cyclictest1622369-21chrt19:58:433
155607699150,11cyclictest1892141-21taskset23:30:093
155607699150,11cyclictest1609890-21taskset19:50:003
307598140,3rtkit-daemon217-21plymouthd22:43:341
1556076991412,1cyclictest0-21swapper/320:35:253
155607699140,11cyclictest1918078-21chrt23:50:073
155607699140,11cyclictest1827539-21taskset22:35:273
155607699140,11cyclictest1725549-21taskset21:20:123
155607699140,11cyclictest1576636-21taskset19:20:233
307598130,6rtkit-daemon714-21snmpd00:07:011
18843862130,6sleep21884496-21sed23:20:192
307598120,7rtkit-daemon1675507-21kthreadcore20:40:172
307598120,3rtkit-daemon217-21plymouthd23:41:461
307598120,3rtkit-daemon217-21plymouthd22:48:101
19552692120,9sleep21955345-21ntp_states00:15:212
17060112121,7sleep01706220-21latency_hist21:05:010
16227462121,8sleep21622777-21/usr/sbin/munin20:00:112
15985572120,4sleep01600493-21grep19:40:180
307598110,7rtkit-daemon714-21snmpd23:08:051
307598110,6rtkit-daemon3256-21sendmail-mta00:12:281
307598110,6rtkit-daemon3256-21sendmail-mta00:12:271
307598110,6rtkit-daemon217-21plymouthd20:49:332
307598110,1rtkit-daemon0-21swapper/220:56:492
19287732110,1sleep10-21swapper/123:55:201
18857472111,6sleep01885780-21apt-get23:25:140
18217662113,4sleep11821787-21apt-get22:35:131
18089552113,6sleep01808964-21cpu22:25:110
17067162110,8sleep00-21swapper/021:05:160
307598100,6rtkit-daemon716-21ntpd21:57:481
307598100,6rtkit-daemon493-21gmain21:50:221
307598100,6rtkit-daemon1981906-21runrttasks00:38:341
307598100,5rtkit-daemon217-21plymouthd21:06:112
307598100,3rtkit-daemon217-21plymouthd21:17:412
307598100,3rtkit-daemon217-21plymouthd20:27:462
307598100,2rtkit-daemon217-21plymouthd00:20:021
307598100,2rtkit-daemon0-21swapper/219:50:192
19564762102,5sleep21956509-21apt-get00:20:132
19049562101,6sleep01-21systemd23:40:000
18874882101,6sleep20-21swapper/223:25:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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