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2026-06-24 - 10:04
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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 Jun 24, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11887102340,5sleep21187113-21kworker/u16:3+xprtiod21:40:182
13281682330,0sleep0221rcuc/023:10:010
10690172280,1sleep00-21swapper/020:10:270
984291992724,1cyclictest0-21swapper/323:40:173
984291992724,1cyclictest0-21swapper/321:30:153
984291992623,1cyclictest0-21swapper/321:00:133
984291992623,1cyclictest0-21swapper/321:00:133
984291992410,9cyclictest1453632-21turbostat00:30:003
12005832241,11sleep01200661-21/usr/sbin/munin21:45:260
984291992320,1cyclictest0-21swapper/322:40:153
98429199226,6cyclictest1120762-21taskset20:54:563
98429199222,14cyclictest1391129-21taskset23:50:003
98429199221,15cyclictest1171277-21taskset21:29:553
98429199212,14cyclictest1271205-21taskset22:30:263
98429199212,14cyclictest1271205-21taskset22:30:253
984291992118,1cyclictest0-21swapper/321:40:143
984291992118,1cyclictest0-21swapper/320:40:003
98429199211,16cyclictest1278998-21taskset22:35:233
98429199211,15cyclictest1147801-21chrt21:15:013
98429199209,7cyclictest12575772sleep322:24:463
98429199202,14cyclictest1258188-21taskset22:25:173
98429199202,14cyclictest1222599-21taskset22:00:193
984291992017,1cyclictest0-21swapper/321:35:143
984291992017,1cyclictest0-21swapper/300:15:133
98429199201,15cyclictest1289502-21taskset22:45:133
98429199201,15cyclictest1011711-21taskset19:26:523
98429199201,14cyclictest1037724-21taskset19:50:013
98429199192,14cyclictest1058410-21taskset20:05:163
98429199192,13cyclictest1422123-21taskset00:09:303
98429199192,13cyclictest1367039-21taskset23:34:093
984291991916,1cyclictest0-21swapper/323:15:013
984291991916,1cyclictest0-21swapper/322:50:283
98429199191,14cyclictest1438249-21chrt00:20:123
98429199191,14cyclictest1216235-21taskset21:55:253
98429199191,14cyclictest1089099-21chrt20:30:143
98429199191,13cyclictest1068611-21chrt20:10:223
98429199188,7cyclictest14042582sleep323:55:233
98429199182,12cyclictest1056405-21taskset20:01:123
984291991815,1cyclictest0-21swapper/323:20:013
984291991815,1cyclictest0-21swapper/322:10:183
984291991815,1cyclictest0-21swapper/320:25:223
984291991815,1cyclictest0-21swapper/320:20:143
984291991811,4cyclictest9930762chrt19:15:133
98429199181,13cyclictest1407104-21taskset00:00:143
98429199181,13cyclictest1312771-21taskset23:00:093
98429199181,13cyclictest1307701-21taskset22:55:193
98429199181,13cyclictest1242478-21taskset22:15:153
98429199181,13cyclictest1232664-21taskset22:05:533
98429199181,13cyclictest1205974-21taskset21:50:333
98429199181,13cyclictest1153447-21taskset21:15:243
98429199181,13cyclictest1139691-21taskset21:07:353
98429199181,13cyclictest1024030-21taskset19:35:263
98429199181,13cyclictest1017989-21taskset19:30:483
98429199172,12cyclictest1467695-21taskset00:35:283
98429199172,12cyclictest1005405-21taskset19:22:543
98429199172,11cyclictest1108450-21taskset20:45:133
984291991714,1cyclictest0-21swapper/323:45:203
984291991714,1cyclictest0-21swapper/323:35:243
984291991714,1cyclictest0-21swapper/319:10:153
98429199171,13cyclictest1459887-21taskset00:30:423
98429199171,13cyclictest1162354-21taskset21:21:463
98429199171,13cyclictest1121032-21taskset20:55:083
98429199171,13cyclictest1030838-21taskset19:40:513
98429199171,12cyclictest1344139-21taskset23:20:063
98429199171,12cyclictest1326633-21taskset23:05:503
98429199171,12cyclictest1044550-21taskset19:55:153
12814762171,9sleep01281203-21sendmail-msp22:40:110
98429199167,7cyclictest10756082sleep320:15:473
98429199162,12cyclictest1043601-21taskset19:50:463
984291991613,1cyclictest0-21swapper/321:45:163
984291991612,1cyclictest0-21swapper/320:40:133
98429199161,12cyclictest1422924-21taskset00:10:133
98429199161,12cyclictest1358207-21taskset23:26:283
137548621611,3sleep1874-21rs:main1
13436712161,12sleep11343677-21ssh23:19:371
10366612160,6sleep11036698-21ntpq19:45:221
13728472141,5sleep11372932-21ntpq23:35:211
12271172141,9sleep21228057-21ssh22:05:172
10565752141,2sleep00-21swapper/020:03:220
10250792141,10sleep00-21swapper/019:40:130
13660192131,9sleep21366023-21ssh23:31:162
12344952132,7sleep01234491-21apt-get22:10:110
10843632130,10sleep21085665-21kthreadcore20:25:202
9831862121,6sleep0983225-21ntpq19:05:210
14403842120,9sleep21441918-21grep00:20:202
12515362120,9sleep11252528-21cut22:20:181
11954272121,8sleep21195528-21fschecks_time21:45:152
11848432120,9sleep21184881-21awk21:35:292
11274322120,8sleep21127469-21grep21:00:132
11274322120,8sleep21127469-21grep21:00:132
14673562113,2sleep1331ktimers/100:35:261
14591642110,8sleep21459217-21ld00:30:222
13516772111,7sleep01351764-21latency_hist23:25:000
13199402110,4sleep00-21swapper/023:03:590
13188342111,7sleep21296756-21kworker/u16:2+nfsiod23:00:502
12475682111,7sleep21247614-21ntpq22:15:272
12412972110,8sleep21241304-21sh22:13:142
12319062110,2sleep01231954-21ssh22:05:230
11224392111,7sleep21123409-21cut20:55:202
10762282111,7sleep21076000-21sendmail-msp20:20:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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