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2026-04-04 - 14:17
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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 Sat Apr 04, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137842330300,20sleep20-21swapper/219:06:292
137872270241,19sleep00-21swapper/019:06:330
140032268237,21sleep10-21swapper/119:09:191
140102262229,22sleep30-21swapper/319:09:253
230992660,0sleep10-21swapper/122:19:221
180652590,0sleep20-21swapper/219:15:162
34672580,0sleep30-21swapper/321:28:223
266832560,0sleep30-21swapper/322:01:223
114412560,0sleep00-21swapper/000:09:000
99032550,0sleep10-21swapper/100:07:491
52272540,0sleep20-21swapper/221:49:152
21452250,0sleep30-21swapper/300:22:413
56042170,0sleep10-21swapper/122:47:131
32512140,0sleep10-21swapper/100:23:311
233892140,0sleep20-21swapper/223:55:572
184972140,0sleep30-21swapper/323:14:583
143012120,0sleep30-21swapper/300:10:153
108142120,0sleep00-21swapper/022:30:420
88722110,1sleep30-21swapper/320:05:223
290782110,0sleep00-21swapper/020:50:150
16777290,0sleep10-21swapper/121:35:521
141709993,5cyclictest0-21swapper/320:40:003
141659991,4cyclictest13467-21awk00:30:012
27972280,0sleep00-21swapper/023:59:310
26047280,0sleep30-21swapper/321:41:433
23320280,0sleep00-21swapper/019:25:590
20455280,0sleep30-21swapper/322:17:203
141709983,4cyclictest0-21swapper/322:40:133
141709983,2cyclictest20229-21ssh22:55:423
141659984,3cyclictest275-21systemd-journal21:55:262
141659983,3cyclictest275-21systemd-journal23:16:152
141579985,2cyclictest11152-21expr22:50:200
141579984,3cyclictest275-21systemd-journal23:21:400
141579983,3cyclictest275-21systemd-journal20:05:010
13985280,0sleep20-21swapper/222:52:182
9478270,0sleep00-21swapper/021:51:100
4105270,0sleep10-21swapper/121:28:521
24412270,0sleep10-21swapper/123:18:081
141709976,1cyclictest34-21ksoftirqd/322:50:013
141709975,2cyclictest34-21ksoftirqd/321:10:003
141709974,2cyclictest275-21systemd-journal23:54:133
141709973,3cyclictest658-21snmpd20:11:153
141709973,3cyclictest17511-21cron22:55:003
141709973,1cyclictest0-21swapper/321:55:013
141709973,1cyclictest0-21swapper/321:21:143
141659976,1cyclictest28-21ksoftirqd/221:00:002
141659974,2cyclictest6676-21tail21:30:142
141659974,2cyclictest504-21dbus-daemon23:10:372
141659974,2cyclictest275-21systemd-journal22:32:122
141659973,3cyclictest658-21snmpd20:52:042
141659973,1cyclictest0-21swapper/223:22:592
141659972,3cyclictest12756-21perf00:10:012
141659970,6cyclictest30433-21expr00:20:152
141659970,4cyclictest9354-21perf20:10:012
141629976,1cyclictest16405-21kworker/1:023:03:591
141629974,2cyclictest21729-21cron00:35:001
141629973,3cyclictest658-21snmpd23:44:421
141629973,3cyclictest658-21snmpd22:01:211
141629973,3cyclictest658-21snmpd21:07:281
141629972,4cyclictest7216-21cut21:30:181
141579974,2cyclictest23271-21sshd23:36:400
141579974,2cyclictest16255-21sshd20:24:150
141579974,2cyclictest13815-21smartctl00:10:110
141579973,3cyclictest6152-21cut21:10:150
141579973,3cyclictest504-21dbus-daemon23:28:330
141579973,3cyclictest275-21systemd-journal21:57:560
141579973,3cyclictest14407-21irqstats21:15:160
141579973,3cyclictest12-21ksoftirqd/020:55:010
141579970,1cyclictest1727-21ssh00:22:210
141709966,0cyclictest0-21swapper/300:38:143
141709964,1cyclictest634-21expr19:50:133
141709964,1cyclictest4900-21diskmemload23:30:123
141709963,2cyclictest7157-21sh21:30:173
141709963,2cyclictest5735-21grep20:00:133
141709963,2cyclictest504-21dbus-daemon21:40:003
141709963,2cyclictest4724-21cat23:25:193
141709963,2cyclictest29247-21ssh23:20:283
141709963,2cyclictest29005-21cat20:50:143
141709963,2cyclictest275-21systemd-journal20:25:123
141709963,2cyclictest27062-21ssh22:21:023
141709963,2cyclictest26224-21ssh23:00:083
141709963,2cyclictest2352-21sshd21:01:153
141709963,2cyclictest21925-21ntp_states23:55:163
141709963,2cyclictest20159-21pmu-power23:15:163
141709963,2cyclictest15770-21cat20:20:203
141709963,1cyclictest0-21swapper/322:25:063
141709963,1cyclictest0-21swapper/321:15:033
141709962,3cyclictest9969-21smart_sda22:30:203
141709962,3cyclictest8785-21grep22:10:173
141709962,3cyclictest658-21snmpd23:35:083
141709962,3cyclictest658-21snmpd22:05:043
141709962,3cyclictest658-21snmpd21:56:113
141709962,3cyclictest658-21snmpd21:46:093
141709962,3cyclictest658-21snmpd21:11:103
141709962,3cyclictest658-21snmpd20:56:183
141709962,3cyclictest658-21snmpd19:41:293
141709962,3cyclictest658-21snmpd19:36:383
141709962,3cyclictest658-21snmpd19:11:263
141709962,3cyclictest658-21snmpd00:16:153
141709962,3cyclictest658-21snmpd00:05:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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