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2026-04-18 - 14:24
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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
Characteristics of the 100 highest latencies:
System rack1slot3.osadl.org (updated Sat Apr 18, 2026 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1971952991313,0cyclictest0-21swapper/308:30:193
197195299130,11cyclictest0-21swapper/308:50:133
1971952991212,0cyclictest0-21swapper/311:20:183
1971952991211,0cyclictest0-21swapper/309:40:193
197195299120,11cyclictest0-21swapper/309:50:243
197195299120,11cyclictest0-21swapper/309:00:183
197195299120,11cyclictest0-21swapper/309:00:183
197195299120,10cyclictest0-21swapper/311:55:123
1971952991111,0cyclictest0-21swapper/311:25:183
1971952991111,0cyclictest0-21swapper/309:30:563
1971952991111,0cyclictest0-21swapper/307:15:013
197195299110,10cyclictest0-21swapper/311:15:013
197195299110,10cyclictest0-21swapper/309:35:133
197195299110,0cyclictest0-21swapper/312:25:123
197195299110,0cyclictest0-21swapper/311:35:163
197195299110,0cyclictest0-21swapper/308:00:183
197195299110,0cyclictest0-21swapper/307:30:143
197195299109,1cyclictest0-21swapper/307:45:133
197195299109,0cyclictest0-21swapper/308:09:013
1971952991010,0cyclictest0-21swapper/312:10:123
1971952991010,0cyclictest0-21swapper/311:40:183
1971952991010,0cyclictest0-21swapper/310:50:013
1971952991010,0cyclictest0-21swapper/310:20:003
1971952991010,0cyclictest0-21swapper/309:25:203
1971952991010,0cyclictest0-21swapper/309:15:133
1971952991010,0cyclictest0-21swapper/309:10:143
1971952991010,0cyclictest0-21swapper/308:25:123
1971952991010,0cyclictest0-21swapper/308:20:163
1971952991010,0cyclictest0-21swapper/307:50:123
197195299100,0cyclictest0-21swapper/312:10:023
19719529999,0cyclictest0-21swapper/311:45:183
19719529999,0cyclictest0-21swapper/310:30:193
19719529999,0cyclictest0-21swapper/310:30:003
19719529999,0cyclictest0-21swapper/309:50:013
19719529999,0cyclictest0-21swapper/307:10:173
19719529997,1cyclictest0-21swapper/312:15:123
19719529988,0cyclictest0-21swapper/312:33:483
19719529988,0cyclictest0-21swapper/311:15:193
19719529988,0cyclictest0-21swapper/310:00:123
19719529988,0cyclictest0-21swapper/307:37:393
19719529987,1cyclictest0-21swapper/311:05:133
19719529987,0cyclictest0-21swapper/310:55:133
19719529980,7cyclictest0-21swapper/307:25:183
19719529977,0cyclictest0-21swapper/310:42:373
19719529977,0cyclictest0-21swapper/310:10:273
19719529977,0cyclictest0-21swapper/310:10:013
19719529977,0cyclictest0-21swapper/309:57:203
19719529977,0cyclictest0-21swapper/308:15:123
19719529976,0cyclictest0-21swapper/311:55:023
19719529976,0cyclictest0-21swapper/311:00:173
19719529976,0cyclictest0-21swapper/308:10:153
19719529970,0cyclictest0-21swapper/309:05:183
19719529966,0cyclictest0-21swapper/310:35:003
19719529966,0cyclictest0-21swapper/310:23:493
19719529966,0cyclictest0-21swapper/309:20:133
19719529966,0cyclictest0-21swapper/307:40:123
19719529965,0cyclictest0-21swapper/311:30:113
19719529960,6cyclictest0-21swapper/310:50:183
1971537260,1sleep10-21swapper/107:06:221
1970979261,3sleep30-21swapper/307:05:193
19719529955,0cyclictest0-21swapper/312:04:563
19719529955,0cyclictest0-21swapper/307:55:133
19719529954,0cyclictest0-21swapper/312:20:153
19719529954,0cyclictest0-21swapper/308:45:133
19719529950,4cyclictest0-21swapper/308:58:023
19719529950,3cyclictest0-21swapper/307:20:013
1970257250,3sleep21970504-21grep07:05:142
2093803240,3sleep02093909-21/usr/sbin/munin12:05:190
19719529944,0cyclictest0-21swapper/308:40:153
19719529943,0cyclictest0-21swapper/308:35:033
19719529940,2cyclictest0-21swapper/312:35:133
2101389230,1sleep02101415-21apt-get12:25:120
2034895230,2sleep22035072-21python309:45:282
1998311230,1sleep21998607-21df08:15:142
1970156231,1sleep00-21swapper/007:05:090
2105175220,1sleep22105179-21ssh12:33:542
2098615220,0sleep00-21swapper/012:16:190
2074662220,1sleep22074724-21idleruntime11:20:142
2051419220,1sleep00-21swapper/010:25:160
2050518220,1sleep02050650-21cat10:25:010
2048363220,1sleep00-21swapper/010:19:360
2023188220,0sleep00-21swapper/009:16:050
2021559220,1sleep12021645-21latency_hist09:15:011
2021049220,1sleep22021106-21sshd09:10:222
2017887220,0sleep10-21swapper/109:05:121
2014045220,1sleep20-21swapper/208:55:132
2002826220,1sleep12002997-21/usr/sbin/munin08:25:191
1990708220,1sleep20-21swapper/207:55:132
1989232220,1sleep20-21swapper/207:50:172
1986186220,1sleep21986469-21apt-config07:45:002
1982594220,1sleep01982859-21diskstats07:35:140
1980519220,1sleep00-21swapper/007:30:140
1978665220,1sleep11978607-21/usr/sbin/munin07:25:141
1977121220,1sleep21977198-21cat07:20:152
1972153222,0sleep00-21swapper/007:10:120
2106201210,0sleep10-21swapper/112:35:171
2105544210,0sleep20-21swapper/212:35:062
2103956210,0sleep00-21swapper/012:30:160
2103217210,0sleep10-21swapper/112:30:011
2102180210,0sleep20-21swapper/212:25:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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