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2026-04-19 - 19:54
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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
Characteristics of the 100 highest latencies:
System rack1slot3.osadl.org (updated Sun Apr 19, 2026 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1907249991411,1cyclictest0-21swapper/307:50:113
190724999140,12cyclictest0-21swapper/312:05:123
1907249991310,1cyclictest0-21swapper/310:15:013
190724999130,8cyclictest0-21swapper/309:25:123
190724999120,8cyclictest0-21swapper/308:25:123
190724999120,1cyclictest0-21swapper/311:35:123
190724999120,11cyclictest0-21swapper/309:15:123
190724999120,11cyclictest0-21swapper/309:00:113
190724999120,11cyclictest0-21swapper/308:15:113
190724999120,11cyclictest0-21swapper/308:00:123
1907249991111,0cyclictest0-21swapper/308:35:133
1907249991110,1cyclictest0-21swapper/310:00:093
190724999110,11cyclictest0-21swapper/308:50:003
190724999110,10cyclictest0-21swapper/312:25:183
190724999110,10cyclictest0-21swapper/311:50:153
190724999110,10cyclictest0-21swapper/311:45:193
190724999110,10cyclictest0-21swapper/310:25:013
190724999110,10cyclictest0-21swapper/308:55:013
190724999110,0cyclictest0-21swapper/312:20:123
190724999110,0cyclictest0-21swapper/310:15:123
190724999110,0cyclictest0-21swapper/309:55:133
190724999110,0cyclictest0-21swapper/307:55:173
190724999109,0cyclictest0-21swapper/311:15:153
190724999109,0cyclictest0-21swapper/310:55:103
190724999109,0cyclictest0-21swapper/310:30:143
190724999109,0cyclictest0-21swapper/307:35:093
1907249991010,0cyclictest0-21swapper/311:20:133
1907249991010,0cyclictest0-21swapper/311:05:153
1907249991010,0cyclictest0-21swapper/309:20:113
1907249991010,0cyclictest0-21swapper/307:25:103
1907249991010,0cyclictest0-21swapper/307:15:003
190724999100,9cyclictest0-21swapper/310:50:123
190724999100,0cyclictest0-21swapper/310:10:023
190724999100,0cyclictest0-21swapper/308:35:003
19072499999,0cyclictest0-21swapper/310:45:133
19072499999,0cyclictest0-21swapper/310:20:193
19072499999,0cyclictest0-21swapper/309:45:133
19072499999,0cyclictest0-21swapper/308:55:193
19072499999,0cyclictest0-21swapper/307:30:123
19072499999,0cyclictest0-21swapper/307:14:553
19072499998,0cyclictest0-21swapper/312:10:193
19072499988,0cyclictest0-21swapper/312:35:143
19072499988,0cyclictest0-21swapper/312:16:433
19072499988,0cyclictest0-21swapper/312:00:183
19072499988,0cyclictest0-21swapper/311:30:193
19072499988,0cyclictest0-21swapper/307:45:013
19072499987,1cyclictest26450irq/132-ahci[0000:00:17.0]09:09:563
19072499980,7cyclictest0-21swapper/310:40:113
1905854282,4sleep30-21swapper/307:05:143
19072499977,0cyclictest0-21swapper/311:26:313
19072499977,0cyclictest0-21swapper/307:20:173
19072499970,6cyclictest0-21swapper/312:30:143
19072499970,6cyclictest0-21swapper/308:40:153
19072499966,0cyclictest0-21swapper/311:55:193
19072499966,0cyclictest0-21swapper/311:00:123
19072499966,0cyclictest0-21swapper/309:35:013
19072499966,0cyclictest0-21swapper/309:35:013
19072499966,0cyclictest0-21swapper/308:20:123
19072499966,0cyclictest0-21swapper/308:10:013
19072499964,1cyclictest356-1kworker/3:1H+kblockd11:40:033
2019495250,2sleep12019521-21apt-get11:45:141
2007718250,2sleep02007850-21ps11:15:190
19072499955,0cyclictest0-21swapper/311:10:123
19072499955,0cyclictest0-21swapper/310:35:143
19072499955,0cyclictest0-21swapper/309:50:123
19072499955,0cyclictest0-21swapper/309:40:113
19072499955,0cyclictest0-21swapper/309:30:023
19072499955,0cyclictest0-21swapper/309:12:413
19072499955,0cyclictest0-21swapper/308:05:213
19072499954,0cyclictest0-21swapper/307:40:113
1913569240,4sleep20-21swapper/207:24:102
1906827242,1sleep20-21swapper/207:06:372
1906749241,2sleep10-21swapper/107:05:361
2036105232,1sleep0766-21snmpd12:21:540
2033148230,1sleep12033299-21ntp_states12:15:181
2029414230,2sleep22029416-21ssh12:05:282
1964657230,2sleep11964660-21cron09:35:011
1950989230,1sleep21951015-21apt-get09:00:112
1927756230,2sleep21927861-21hostname08:00:132
1905925231,1sleep00-21swapper/007:05:140
2036868220,1sleep02037138-21df_inode12:25:150
2032993220,1sleep02033147-21/usr/sbin/munin12:15:170
2031187220,0sleep00-21swapper/012:10:180
2026021220,1sleep02026079-21sh12:00:140
2022041220,1sleep02022193-21memory11:50:160
2020141220,1sleep20-21swapper/211:45:182
2017411220,1sleep02017437-21apt-get11:40:120
2017133220,1sleep12017152-21latency_hist11:40:001
1997152220,1sleep01997302-21ntp_states10:50:170
1994454220,1sleep00-21swapper/010:45:120
1991768220,0sleep20-21swapper/210:37:062
1989537220,1sleep00-21swapper/010:30:470
1982101220,1sleep01982348-21diskstats10:15:140
1978745220,1sleep21978996-21users10:05:202
1970111220,1sleep01970393-21users09:45:210
1961826220,1sleep00-21swapper/009:25:200
1960861220,0sleep11960887-21apt-get09:25:121
1958601220,1sleep21958608-21latency_hist09:20:002
1951143220,1sleep01951414-21df_inode09:00:130
1945237220,1sleep11945238-21/usr/sbin/munin08:45:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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