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2026-09-14 - 04:02
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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 highest latencies:
System rackeslot8.osadl.org (updated Mon Sep 14, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15647932410,1sleep00-21swapper/019:45:250
1512159993121,7cyclictest1808550-21sleep22:40:003
1512159992623,1cyclictest0-21swapper/321:00:283
1512159992623,1cyclictest0-21swapper/320:20:203
1512159992623,1cyclictest0-21swapper/320:20:013
1512159992623,1cyclictest0-21swapper/300:20:123
1512159992522,1cyclictest0-21swapper/323:20:013
1512159992522,1cyclictest0-21swapper/321:21:093
1512159992522,1cyclictest0-21swapper/300:10:013
1512159992421,1cyclictest0-21swapper/323:40:193
1512159992420,2cyclictest0-21swapper/323:00:233
1512159992320,1cyclictest0-21swapper/321:40:253
1512159992320,1cyclictest0-21swapper/321:35:253
1512159992320,1cyclictest0-21swapper/321:05:163
1512159992320,1cyclictest0-21swapper/320:00:013
1512159992219,1cyclictest0-21swapper/323:15:213
1512159992219,1cyclictest0-21swapper/322:21:303
1512159992219,1cyclictest0-21swapper/319:40:123
1512159992219,1cyclictest0-21swapper/319:20:483
1512159992219,1cyclictest0-21swapper/300:00:263
1512159992218,2cyclictest0-21swapper/322:40:193
1512159992118,1cyclictest0-21swapper/321:45:273
1512159992017,1cyclictest0-21swapper/322:15:243
1512159992017,1cyclictest0-21swapper/322:01:053
1512159992017,1cyclictest0-21swapper/321:55:003
1512159992017,1cyclictest0-21swapper/300:30:003
1512159992013,4cyclictest17619092sleep322:10:013
151215999201,15cyclictest1526919-21taskset19:18:063
151215999201,14cyclictest1837683-21taskset22:55:233
151215999192,13cyclictest1654619-21taskset20:55:243
1512159991916,1cyclictest0-21swapper/323:55:193
151215999191,14cyclictest1964047-21taskset00:18:153
151215999191,14cyclictest1855692-21taskset23:10:033
151215999191,14cyclictest1800732-21taskset22:34:593
151215999191,14cyclictest1628947-21taskset20:35:233
151215999191,13cyclictest1785486-21taskset22:25:003
151215999191,13cyclictest1707380-21sleep21:35:003
151215999182,12cyclictest1853893-21taskset23:05:383
1512159991816,1cyclictest0-21swapper/322:15:013
1512159991815,1cyclictest0-21swapper/321:25:193
1512159991815,1cyclictest0-21swapper/320:40:193
151215999181,13cyclictest1994365-21taskset00:35:313
151215999181,13cyclictest1956362-21taskset00:13:423
151215999181,13cyclictest1916703-21taskset23:46:393
151215999181,13cyclictest1893417-21taskset23:32:093
151215999181,13cyclictest1879102-21taskset23:25:103
151215999181,13cyclictest1744784-21taskset21:55:463
151215999181,13cyclictest1676767-21taskset21:15:163
151215999181,13cyclictest1674589-21taskset21:10:313
151215999181,13cyclictest1623116-21taskset20:31:143
151215999181,13cyclictest1616075-21chrt20:25:213
151215999181,13cyclictest1596864-21taskset20:10:263
151215999181,13cyclictest1591099-21taskset20:08:013
151215999181,13cyclictest1539972-21turbostat19:30:003
151215999181,13cyclictest1517568-21taskset19:10:243
151215999181,12cyclictest1924243-21taskset23:51:043
1512159991810,5cyclictest1571984-21turbostat19:55:003
151215999171,13cyclictest1551814-21taskset19:35:223
151215999171,12cyclictest1987677-21chrt00:33:423
151215999171,12cyclictest1824451-21taskset22:50:023
151215999171,12cyclictest1823292-21taskset22:47:303
151215999171,12cyclictest1636491-21taskset20:45:053
151215999171,12cyclictest1564743-21taskset19:45:243
151215999171,12cyclictest1546033-21taskset19:30:573
15457272160,12sleep11545949-21awk19:30:281
151215999161,12cyclictest1901372-21taskset23:37:253
151215999161,11cyclictest1642897-21taskset20:50:073
151215999160,12cyclictest1580077-21taskset20:00:193
15066962161,11sleep11507501-21tr19:05:181
18620872151,7sleep01862093-21ssh23:12:050
18397452150,11sleep21839961-21sed23:00:012
19022252141,10sleep11902352-21cat23:40:011
18239472146,2sleep10-21swapper/122:49:291
16904312140,10sleep11683961-21sendmail-msp21:21:131
15397342149,3sleep01518249-21kworker/0:2+kacpi_notify19:27:220
19175012130,5sleep10-21swapper/123:48:471
18375982131,4sleep11837640-21ntpq22:55:221
16778742131,4sleep11679115-21tr21:15:191
16117222131,9sleep21612554-21cat20:25:172
19490182121,8sleep2222-21plymouthd00:10:012
18862642120,9sleep11886266-21ssh23:29:101
18463492124,6sleep0872-21in:imuxsock23:01:230
18276092124,5sleep11829501-21kthreadcore22:50:171
18088212121,8sleep10-21swapper/122:40:071
17840752121,8sleep01777444-21sendmail-msp22:21:340
16300432121,8sleep01629822-21sendmail-msp20:40:060
15727072121,3sleep01573638-21irqstats19:55:160
19879662110,8sleep11987970-21ssh00:34:331
19397602110,8sleep01933444-21sendmail-msp00:00:530
19281412113,1sleep1171rcu_preempt23:55:161
19235252111,2sleep01923556-21ntpq23:50:220
18878832116,2sleep01888777-21kthreadcore23:30:180
17791282110,8sleep11779832-21kthreadcore22:20:181
17625832112,6sleep01763075-21irqcore22:10:150
16842432113,5sleep242544-21kworker/u16:0+ext4-rsv-conversion21:20:132
16610892111,6sleep21661114-21ntpq21:00:252
16489082110,1sleep10-21swapper/120:53:181
16358772112,7sleep11629822-21sendmail-msp20:40:311
16225842110,7sleep21-21systemd20:30:262
16030202110,8sleep21603140-21ntpq20:15:232
16005662111,7sleep01602324-21cut20:15:210
15527122110,7sleep01552869-21latency_hist19:40:010
15261002110,8sleep21526142-21ld19:15:212
15131862110,8sleep21513914-21cut19:10:202
151215999119,1cyclictest0-21swapper/319:10:013
19805262100,7sleep21980528-21ssh00:30:052
19795562100,3sleep2222-21plymouthd00:28:102
19729002100,7sleep01973018-21ssh00:25:140
19494182100,2sleep20-21swapper/200:10:172
19336772102,5sleep1249-21jbd2/sda2-800:00:051
18940652100,7sleep21894073-21ssh23:33:562
18766472102,5sleep21876692-21ntp_states23:20:252
18244972101,6sleep21824536-21sh22:50:102
17599922100,1sleep00-21swapper/022:05:300
17232342100,2sleep1222-21plymouthd21:45:071
17001072100,7sleep21699900-21/usr/sbin/munin21:30:162
16825562100,1sleep20-21swapper/221:16:112
16288192101,5sleep01628861-21ntpq20:35:210
15612352101,6sleep11562951-21cut19:45:191
15123672101,5sleep11512370-21apt-get19:10:151
1933376291,6sleep01933384-21cron00:00:000
1925519292,4sleep2222-21plymouthd23:54:452
1916746291,2sleep2222-21plymouthd23:46:472
1905431290,6sleep01906801-21cut23:40:200
1903559291,5sleep21902288-21sendmail-msp23:40:182
1882845290,1sleep00-21swapper/023:25:190
1823983290,1sleep20-21swapper/222:49:342
1800168290,2sleep0222-21plymouthd22:33:200
1784815291,6sleep21784821-21ssh22:23:482
1752628290,7sleep10-21swapper/122:00:501
1745619290,6sleep21745625-21ssh21:58:062
1738485290,6sleep11738529-21awk21:55:001
1729886291,5sleep21729892-21ssh21:47:482
1722597290,6sleep11722601-21ssh21:43:541
1721085291,5sleep01715483-21/usr/sbin/munin21:40:280
1699942291,5sleep01699948-21ssh21:30:140
1697372292,4sleep21697415-21ntpq21:25:232
1661006291,5sleep01655521-21sendmail-msp21:00:230
1648699290,1sleep00-21swapper/020:50:370
1648202290,6sleep21648269-21processes20:50:272
1641205290,6sleep21641616-21needreboot20:45:222
1630085291,5sleep21629822-21sendmail-msp20:40:122
1623680292,3sleep21623713-21apt-get20:35:112
1591706291,4sleep01591766-21fschecks_count20:10:160
1539684290,2sleep1222-21plymouthd19:26:431
1518216290,2sleep0222-21plymouthd19:11:220
1512024291,4sleep21512055-21munin-run19:10:002
1505997291,4sleep01506029-21apt-get19:05:130
1988480281,3sleep11988513-21apt-get00:35:141
1948421280,1sleep11948427-21ssh00:08:191
1932624280,5sleep21932628-21ssh23:57:582
1871250281,4sleep11870960-21sendmail-msp23:20:121
1841494281,4sleep11839806-21sendmail-msp23:00:201
1806351281,4sleep01806399-21ntpq22:35:250
1799377281,4sleep11799383-21ssh22:31:051
1785771281,4sleep11785977-21/usr/sbin/munin22:25:151
1754404281,4sleep11754444-21ssh22:05:151
1746272281,4sleep01746313-21munin-run22:00:010
1738818281,3sleep1222-21plymouthd21:55:121
1707664281,4sleep01707701-21apt-get21:35:110
1699246281,4sleep11699250-21ssh21:29:021
1676941281,4sleep01677873-21irqstats21:15:180
1674610280,2sleep11674614-21ssh21:10:421
1655749281,3sleep11655782-21apt-get21:00:121
1654541281,3sleep11654576-21ntpq20:55:231
1642495281,4sleep0222-21plymouthd20:48:120
1610887281,4sleep11610909-21apt-get20:25:121
1610331280,6sleep01604154-21sendmail-msp20:21:300
1607160280,5sleep21608673-21kthreadcore20:20:202
1597962281,3sleep11597995-21apt-get20:15:141
1589874281,4sleep21590256-21strings20:05:212
1584563280,2sleep20-21swapper/220:00:522
1578657284,1sleep10-21swapper/120:00:021
1577444281,4sleep21577491-21ntp_states19:55:222
1553013283,2sleep1321rcuc/119:40:141
1553001284,2sleep0151ktimers/019:40:130
1540212281,3sleep21540245-21apt-get19:30:132
1539736281,1sleep2171rcu_preempt19:27:242
1995557271,4sleep21995562-21sh00:38:472
1973019271,3sleep11973157-21ssh00:25:151
1971023270,1sleep00-21swapper/000:20:530
1965182271,3sleep11965228-21grep00:20:141
1964945272,3sleep21930981-21kworker/u16:3+nfsiod00:20:032
1963696271,3sleep11963702-21ssh00:17:211
1956842271,3sleep01956924-21latency_hist00:15:000
1949373270,1sleep10-21swapper/100:10:121
1946920270,4sleep01947021-21mailstats00:05:260
1939901271,4sleep21933444-21sendmail-msp00:01:152
1916944271,3sleep01916969-21apt-get23:47:180
1897003271,3sleep01898724-21kthreadcore23:35:190
1894801270,3sleep20-21swapper/223:35:132
1886822271,3sleep11886611-21appstreamcli23:30:031
1877517270,5sleep01000-21snmpd23:21:150
1863422271,3sleep11863455-21apt-get23:15:111
1855686271,3sleep21855472-21appstreamcli23:10:042
1854497270,1sleep0222-21plymouthd23:07:240
1847963270,3sleep2222-21plymouthd23:05:142
1846359271,3sleep2874-21rs:main2
1838641270,1sleep00-21swapper/022:56:500
1829777271,4sleep01829818-21ntpq22:50:200
1808915270,4sleep21808967-21ssh22:40:162
1769881271,3sleep11769885-21ssh22:15:051
1768327270,3sleep1222-21plymouthd22:11:201
1761357270,4sleep21761363-21ssh22:08:372
1752568271,4sleep01746339-21sendmail-msp22:00:370
1752045270,4sleep21746339-21sendmail-msp22:00:272
1731062271,2sleep00-21swapper/021:50:140
1723774271,3sleep01724704-21irqstats21:45:170
1714623271,3sleep1222-21plymouthd21:38:291
1697153270,5sleep01697314-21/usr/sbin/munin21:25:210
1675083270,4sleep21675089-21ssh21:11:592
1668627271,3sleep01668633-21ssh21:10:050
1668290270,1sleep10-21swapper/121:09:461
1629452271,3sleep10-21swapper/120:36:021
1616694271,3sleep0222-21plymouthd20:26:030
1597585270,1sleep20-21swapper/220:14:062
1591143270,1sleep00-21swapper/020:08:350
1588004271,3sleep11589873-21kthreadcore20:05:201
1571704270,1sleep00-21swapper/019:51:390
1553038271,3sleep20-21swapper/219:40:152
1551721271,3sleep11551768-21ntpq19:35:211
1546657270,4sleep21546814-21diskstats19:35:142
1545393271,3sleep01545434-21ldconfig19:30:230
1526187271,3sleep01526222-21ntpq19:15:230
1520956270,4sleep1222-21plymouthd19:15:121
1991074261,3sleep01992795-21kthreadcore00:35:210
1985915260,3sleep01985954-21ntpq00:30:240
1963195260,3sleep2222-21plymouthd00:15:542
1957122260,1sleep00-21swapper/000:15:040
1918722260,3sleep1222-21plymouthd23:50:151
1908000260,3sleep11908040-21ntpq23:40:251
1885419260,1sleep20-21swapper/223:26:552
1870776260,1sleep00-21swapper/023:19:350
1869381261,2sleep21668327-21diskmemload23:15:402
1857602260,4sleep11859174-21kthreadcore23:10:181
1847923261,3sleep11847960-21apt-get23:05:131
1822862260,3sleep0222-21plymouthd22:46:190
1815625260,3sleep01815630-21sshd-session22:42:430
1807425261,2sleep1222-21plymouthd22:36:541
1807405260,1sleep20-21swapper/222:36:512
1799457260,1sleep20-21swapper/222:31:182
1792141260,1sleep00-21swapper/022:27:390
1785978260,3sleep21786221-21irqcore22:25:162
1775958260,1sleep00-21swapper/022:16:000
1770914260,3sleep21771532-21cut22:15:182
1767679261,2sleep20-21swapper/222:10:252
1730991260,3sleep2222-21plymouthd21:50:082
1715438261,3sleep20-21swapper/221:40:062
1714395260,3sleep2222-21plymouthd21:37:532
1705997260,1sleep10-21swapper/121:31:071
1668114260,1sleep20-21swapper/221:07:302
1654497260,3sleep01654534-21ntpq20:55:220
1649321260,3sleep21649356-21dpkg20:55:122
1623123261,2sleep00-21swapper/020:31:200
1610349260,1sleep10-21swapper/120:21:431
1597599260,3sleep1222-21plymouthd20:14:181
1578352260,3sleep01578415-21sendmail-msp20:00:010
1578142260,3sleep1222-21plymouthd19:57:221
1571663260,1sleep10-21swapper/119:51:081
1565882261,2sleep21565884-21apt-get19:50:132
1565549261,2sleep20-21swapper/219:49:332
1533363260,1sleep20-21swapper/219:22:152
1527758260,3sleep11527849-21irqcore19:20:171
1527358261,2sleep00-21swapper/019:20:120
1690324251,2sleep01635265-21kworker/u16:4-events_unbound21:20:560
1667993250,2sleep0222-21plymouthd21:05:560
1642396250,2sleep1222-21plymouthd20:46:571
1622553250,2sleep1222-21plymouthd20:30:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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