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2026-04-28 - 07:15
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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 rackbslot7.osadl.org (updated Tue Apr 28, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20293991214,8cyclictest0-21swapper/000:07:350
20293991182,28cyclictest18839-21sh23:27:560
18826211612,77sleep018877-21sort18:57:380
18826211612,77sleep018877-21sort18:57:380
20293991153,73cyclictest0-21swapper/022:30:550
20293991153,73cyclictest0-21swapper/022:30:550
20293991153,29cyclictest6019-21/usr/sbin/munin23:07:420
20293991152,43cyclictest3206-21apt-get19:47:290
20293991143,29cyclictest5125-21runrttasks22:13:020
20293991142,23cyclictest27873-21ssh22:49:220
20293991133,27cyclictest1755-21ssh23:54:280
20293991123,26cyclictest8649-21ssh23:12:290
20293991123,26cyclictest8649-21ssh23:12:290
20293991123,23cyclictest8313-21uname22:17:420
20293991123,23cyclictest8313-21uname22:17:420
20293991122,26cyclictest6528-21runrttasks00:02:450
20293991122,24cyclictest6813-21ssh21:22:010
20293991113,24cyclictest18706-21seq22:34:590
20293991112,25cyclictest4248-21rm23:58:090
20293991112,24cyclictest2702-21taskset19:44:240
20293991112,24cyclictest23084-21rm00:30:400
20305991109,66cyclictest11828-21apt-get23:17:332
20293991103,79cyclictest15143-21rm00:17:320
20293991102,28cyclictest2722-21ssh23:02:310
20293991102,28cyclictest2722-21ssh23:02:310
20293991093,24cyclictest24810-21ssh22:44:030
20293991093,24cyclictest24810-21ssh22:44:030
20293991092,27cyclictest2884-21ssh21:14:200
20293991092,26cyclictest17369-21ssh23:27:110
20293991092,26cyclictest11609-21taskset21:28:440
20293991092,22cyclictest29337-21ssh21:58:080
20293991083,29cyclictest1672-21ssh23:00:160
20293991083,22cyclictest13559-21rm23:19:430
20293991082,24cyclictest22473-21ssh23:34:470
20293991074,23cyclictest26009-21fschecks_count20:57:390
20293991072,25cyclictest30815-21ssh23:48:200
20293991072,25cyclictest1074-21ssh22:06:320
20293991072,24cyclictest23286-21ssh21:47:580
20293991063,27cyclictest17279-21seq20:30:070
20293991063,27cyclictest17279-21seq20:30:070
20293991063,24cyclictest3272-21ssh22:09:170
20293991063,24cyclictest21491-21taskset19:03:200
20293991063,24cyclictest21491-21taskset19:03:200
20293991062,27cyclictest26342-21ssh21:53:070
20293991062,27cyclictest26342-21ssh21:53:070
20293991062,27cyclictest23671-21taskset20:49:120
20293991062,24cyclictest28915-21ssh21:03:470
20293991062,24cyclictest28915-21ssh21:03:470
20293991062,24cyclictest13177-21ssh22:26:160
20293991055,90cyclictest22021-21latency_hist21:47:210
20293991055,90cyclictest22021-21latency_hist21:47:210
20293991053,25cyclictest9683-21ssh21:26:420
20293991053,25cyclictest9683-21ssh21:26:420
20293991053,23cyclictest352-21runrttasks23:42:150
20293991052,24cyclictest22514-21ssh22:41:370
20293991052,24cyclictest22514-21ssh22:41:370
20293991052,23cyclictest13716-21taskset00:14:510
20293991043,23cyclictest25297-21taskset20:53:590
20293991042,25cyclictest28628-21sh23:45:300
20293991042,23cyclictest32734-21ssh21:10:280
20293991042,23cyclictest30225-21taskset19:28:210
20293991042,23cyclictest30225-21taskset19:28:210
20293991033,25cyclictest352-21runrttasks19:13:520
20293991032,27cyclictest12467-21taskset20:15:140
20293991032,23cyclictest24021-21taskset19:11:320
20293991024,26cyclictest17645-21ssh21:38:520
20293991023,24cyclictest1234-21seq19:41:140
20293991022,26cyclictest31976-21seq19:34:550
20293991022,24cyclictest27253-21runrttasks19:21:230
20293991013,24cyclictest20613-21ssh00:27:020
20293991013,21cyclictest22008-21seq20:43:270
20293991002,27cyclictest19676-21snmpd20:35:560
20293991002,23cyclictest30569-21ssh22:53:310
20297999847,45cyclictest2374-21systemd-journal20:58:221
2029399982,25cyclictest28913-21seq19:27:090
2029399982,22cyclictest12883-21seq20:17:230
20297999621,66cyclictest0-21swapper/122:37:421
20297999621,66cyclictest0-21swapper/122:37:421
2029399963,7cyclictest0-21swapper/019:57:340
2029399963,7cyclictest0-21swapper/019:57:340
2029399962,22cyclictest8040-21seq20:02:290
2029399962,22cyclictest14827-21ssh21:34:210
20297999549,38cyclictest0-21swapper/121:52:461
20297999549,38cyclictest0-21swapper/121:52:461
20297999445,41cyclictest27699-21cstates19:22:341
20297999428,36cyclictest0-21swapper/123:33:031
2029399943,23cyclictest20387-21runrttasks20:38:170
20297999350,36cyclictest19526-21latency_hist22:37:201
20297999346,41cyclictest3993-21timerandwakeup19:47:531
2029799933,76cyclictest0-21swapper/100:02:311
20293999334,53cyclictest352-21runrttasks20:07:520
2029399933,31cyclictest14497-21/usr/sbin/munin20:22:370
2029399933,31cyclictest14497-21/usr/sbin/munin20:22:370
20297999251,33cyclictest0-21swapper/100:18:541
2029799923,57cyclictest277-21dbus-daemon20:12:181
20297999061,19cyclictest22513-21latency_hist20:47:211
20297999042,40cyclictest0-21swapper/119:12:451
2029399902,24cyclictest6396-21date19:57:200
2029399902,24cyclictest6396-21date19:57:200
20297998848,34cyclictest27183-21diskmemload22:10:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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