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2026-07-14 - 16:13
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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 rackaslot8.osadl.org (updated Tue Jul 14, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
182002302272,19sleep20-21swapper/207:07:182
180702267234,22sleep10-21swapper/107:05:361
183422258227,20sleep30-21swapper/307:08:523
181272252222,19sleep00-21swapper/007:06:190
242242620,0sleep10-21swapper/107:20:141
56392610,0sleep00-21swapper/010:46:390
186202600,0sleep00-21swapper/009:55:170
176522560,0sleep10-21swapper/110:34:541
176522560,0sleep10-21swapper/110:34:541
29502550,0sleep30-21swapper/310:45:143
106772540,0sleep10-21swapper/109:30:191
286682200,0sleep30-21swapper/308:40:203
89522190,0chrt0-21swapper/211:09:002
248202190,0sleep10-21swapper/112:17:171
83862180,0sleep00-21swapper/011:08:330
199682160,0sleep20-21swapper/207:10:182
280442140,0sleep30-21swapper/311:00:193
233222140,0sleep10-21swapper/111:56:231
13472140,0sleep20-21swapper/209:25:152
234082110,0sleep20-21swapper/212:16:102
234782100,0sleep10-21swapper/110:57:501
1852499108,1cyclictest22-21ksoftirqd/110:15:011
16442290,0sleep30-21swapper/309:34:423
32096280,0sleep20-21swapper/207:35:212
31997280,0sleep20-21swapper/211:42:182
3035280,1sleep20-21swapper/208:55:202
28768280,0sleep10-21swapper/112:39:511
185349983,3cyclictest275-21systemd-journal12:05:003
185299986,1cyclictest17067-21ssh10:34:272
185299986,1cyclictest17067-21ssh10:34:272
185249986,1cyclictest658-21snmpd11:17:001
18778270,0sleep30-21swapper/310:55:153
185349974,2cyclictest4280-21smart_sda11:25:203
185349973,3cyclictest5147-21/usr/sbin/munin07:50:213
185349973,3cyclictest275-21systemd-journal12:37:163
185349973,1cyclictest0-21swapper/309:28:353
185349972,3cyclictest275-21systemd-journal10:10:013
185349972,1cyclictest24061-21awk08:30:203
185299974,2cyclictest504-21dbus-daemon11:56:142
185299973,3cyclictest20991-21users07:15:022
185299973,2cyclictest674-21lldpd09:48:372
185249976,1cyclictest22-21ksoftirqd/110:30:011
185249973,3cyclictest31345-21sshd11:22:161
185249973,3cyclictest27387-21grep10:40:161
185249971,3cyclictest28333-21munin-run07:30:001
185249970,1cyclictest141rcu_preempt09:45:011
185199976,1cyclictest658-21snmpd12:18:560
185199973,3cyclictest5127-21systemctl09:00:180
185199973,3cyclictest1487-21sshd11:24:160
185199972,3cyclictest19792-21grep11:55:000
185199971,3cyclictest26019-21munin-run10:40:020
11485270,1sleep30-21swapper/310:30:213
11485270,1sleep30-21swapper/310:30:203
5718260,0sleep30-21swapper/312:25:163
5718260,0sleep30-21swapper/312:25:163
30505260,0sleep20-21swapper/210:42:082
29283260,0sleep10-21swapper/107:30:151
185349966,0cyclictest0-21swapper/309:50:103
185349964,1cyclictest3573-21unixbench_singl10:25:223
185349963,2cyclictest6925-21sh11:46:383
185349963,2cyclictest6843-21chrt11:07:203
185349963,2cyclictest504-21dbus-daemon10:00:013
185349963,2cyclictest4183-21acpi12:05:103
185349963,2cyclictest335-21sshd08:50:163
185349963,2cyclictest31046-21rm12:20:443
185349963,2cyclictest29854-21ssh11:21:053
185349963,2cyclictest275-21systemd-journal11:57:093
185349963,2cyclictest275-21systemd-journal09:05:543
185349963,2cyclictest275-21systemd-journal08:38:163
185349963,2cyclictest22737-21sh09:38:133
185349963,2cyclictest21266-21ssh11:15:483
185349963,2cyclictest17908-21sh10:15:103
185349963,2cyclictest10732-21ssh09:10:373
185349963,2cyclictest10557-21cut10:10:153
185349963,1cyclictest0-21swapper/312:15:153
185349962,3cyclictest658-21snmpd12:12:453
185349962,3cyclictest658-21snmpd10:36:023
185349962,3cyclictest658-21snmpd10:20:333
185349962,3cyclictest658-21snmpd09:22:323
185349962,3cyclictest658-21snmpd08:46:193
185349962,3cyclictest658-21snmpd08:22:413
185349962,3cyclictest658-21snmpd07:35:353
185349962,3cyclictest658-21snmpd07:34:353
185349962,3cyclictest658-21snmpd07:24:383
185349962,3cyclictest658-21snmpd07:13:503
185349962,3cyclictest275-21systemd-journal11:11:133
185349962,3cyclictest27037-21cat07:25:173
185349962,3cyclictest22537-21ntpq07:15:173
185349962,3cyclictest21429-21cat08:25:173
185349962,3cyclictest12785-21cat11:50:163
185349962,3cyclictest12135-21expr08:05:133
185349962,1cyclictest0-21swapper/311:40:573
185349962,1cyclictest0-21swapper/309:40:113
185349960,6cyclictest0-21swapper/311:31:043
185349960,6cyclictest0-21swapper/310:44:103
185349960,2cyclictest26223-21df10:00:133
185349960,2cyclictest13501-21df12:30:133
185299963,2cyclictest8346-21ssh11:28:142
185299963,2cyclictest663-21runrttasks09:09:382
185299963,2cyclictest658-21snmpd11:48:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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