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2025-12-24 - 10:45
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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 Wed Dec 24, 2025 00:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1816800992420,1cyclictest0-21swapper/319:50:003
181680099231,18cyclictest2078846-21turbostat22:35:013
1816800991916,1cyclictest0-21swapper/323:20:013
1816800991913,4cyclictest1952190-21sleep20:55:003
181680099191,13cyclictest1857142-21taskset19:40:003
181680099181,8cyclictest1965102-21chrt21:05:003
1816800991815,1cyclictest0-21swapper/323:10:013
181680099180,14cyclictest1926501-21chrt20:34:553
181680099180,13cyclictest2212730-21taskset00:20:003
181680099180,13cyclictest2098293-21taskset22:50:013
307598170,13rtkit-daemon714-21snmpd23:50:040
1816800991714,1cyclictest0-21swapper/321:40:163
1816800991714,1cyclictest0-21swapper/321:30:003
1816800991714,1cyclictest0-21swapper/319:45:013
181680099171,13cyclictest1955214-21taskset20:55:143
181680099171,12cyclictest2193783-21chrt00:05:033
181680099171,12cyclictest2142871-21taskset23:25:113
181680099171,12cyclictest2015781-21taskset21:45:133
181680099170,13cyclictest2212495-21turbostat00:20:013
181680099170,13cyclictest1927332-21taskset20:35:163
1816800991613,1cyclictest0-21swapper/321:55:183
1816800991613,1cyclictest0-21swapper/320:40:193
1816800991613,1cyclictest0-21swapper/320:09:023
181680099161,12cyclictest2237770-21turbostat00:40:003
181680099161,12cyclictest2188399-21taskset00:00:173
181680099161,12cyclictest2162126-21taskset23:40:013
181680099161,12cyclictest2097012-21chrt22:45:193
181680099161,12cyclictest2065823-21taskset22:20:353
181680099161,12cyclictest2023418-21taskset21:50:173
181680099161,12cyclictest2009166-21turbostat21:40:013
181680099161,12cyclictest2002767-21taskset21:34:143
181680099161,12cyclictest1989821-21taskset21:20:243
181680099161,12cyclictest1976636-21taskset21:10:223
181680099161,12cyclictest1939962-21chrt20:45:133
181680099161,12cyclictest1919336-21taskset20:25:223
181680099161,12cyclictest1882197-21turbostat20:00:013
181680099161,12cyclictest1831544-21turbostat19:20:003
181680099161,11cyclictest2219225-21taskset00:25:143
181680099160,13cyclictest1822817-21chrt19:12:003
1816800991512,1cyclictest0-21swapper/323:14:163
1816800991512,1cyclictest0-21swapper/319:50:173
1816800991512,1cyclictest0-21swapper/319:25:173
181680099151,11cyclictest2155768-21chrt23:35:093
181680099151,11cyclictest2155768-21chrt23:35:083
181680099151,11cyclictest2154896-21taskset23:30:273
181680099151,11cyclictest2046787-21taskset22:05:283
181680099151,11cyclictest2035155-21taskset22:00:153
181680099151,11cyclictest1977765-21taskset21:15:103
181680099151,11cyclictest1964514-21taskset21:00:363
181680099151,11cyclictest1907285-21taskset20:16:323
181680099151,11cyclictest1901013-21taskset20:12:303
181680099151,11cyclictest1888184-21taskset20:00:363
181680099151,11cyclictest1844787-21taskset19:30:163
181680099151,10cyclictest2072516-21turbostat22:30:003
181680099150,12cyclictest2186803-21taskset23:55:293
181680099150,12cyclictest2173647-21taskset23:45:233
181680099150,12cyclictest2059723-21chrt22:18:503
181680099150,12cyclictest1837664-21taskset19:22:223
181680099150,11cyclictest2231059-21chrt00:30:273
21681822141,9sleep00-21swapper/023:45:000
20207982141,4sleep12020936-21nfs4_client21:45:201
19904352141,4sleep11990468-21apt-get21:25:121
18535892140,11sleep01855665-21cut19:35:190
181680099147,5cyclictest2116736-21taskset23:00:463
181680099141,11cyclictest2091518-21chrt22:42:033
181680099141,11cyclictest1913613-21taskset20:21:363
181680099141,10cyclictest2142262-21taskset23:20:583
181680099141,10cyclictest2079376-21chrt22:35:133
181680099140,11cyclictest2200088-21chrt00:10:073
181680099140,11cyclictest2179911-21taskset23:50:193
181680099140,11cyclictest2110370-21chrt22:55:293
181680099140,11cyclictest2052120-21chrt22:10:203
307598120,7rtkit-daemon3256-21sendmail-mta00:21:261
307598120,1rtkit-daemon0-21swapper/120:56:381
18106432121,5sleep01810676-21apt-get19:05:130
18106432121,5sleep01810676-21apt-get19:05:120
307598110,6rtkit-daemon2193997-21/usr/sbin/munin00:05:150
307598110,4rtkit-daemon1823212-21munin-node21:44:500
22129482110,8sleep02213094-21basename00:20:160
21621392110,8sleep12162172-21apt-get23:40:121
20751772111,7sleep00-21swapper/022:30:180
19616102110,8sleep11963699-21cut21:00:231
307598100,6rtkit-daemon719-21lldpd20:33:041
307598100,6rtkit-daemon714-21snmpd22:50:030
307598100,6rtkit-daemon3256-21sendmail-mta20:08:361
307598100,6rtkit-daemon2237712-21chrt00:39:352
307598100,5rtkit-daemon1863257-21/usr/sbin/munin19:45:001
22192502100,7sleep02219392-21basename00:25:150
21519412100,7sleep12154026-21cut23:30:191
21203672100,1sleep12122284-21latency23:05:191
21100352100,7sleep02110243-21unixbench-2d22:55:240
19384822100,7sleep01938619-21awk20:40:230
19091632100,7sleep11910761-21tr20:20:191
30759890,6rtkit-daemon3256-21sendmail-mta22:35:470
30759890,5rtkit-daemon728-21runrttasks22:11:140
30759890,5rtkit-daemon714-21snmpd20:48:191
30759890,5rtkit-daemon3333005-21packagekitd19:20:331
30759890,5rtkit-daemon217-21plymouthd00:10:050
30759890,4rtkit-daemon217-21plymouthd20:14:261
30759890,4rtkit-daemon2161494-21users23:35:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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