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2025-11-02 - 06:19
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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 Sun Nov 02, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10372296265,20sleep10-21swapper/119:07:551
11532263232,20sleep00-21swapper/019:09:270
10432261227,22sleep20-21swapper/219:08:012
10242259224,22sleep30-21swapper/319:07:463
253342640,0sleep0131rcuc/022:35:400
21142610,0sleep10-21swapper/119:10:161
64012580,0sleep30-21swapper/320:30:173
189782580,0sleep30-21swapper/319:45:213
253412200,0sleep20-21swapper/221:32:072
66462170,0sleep30-21swapper/323:50:163
229882160,0sleep30-21swapper/322:55:583
4222140,0sleep20-21swapper/223:03:102
160952140,0sleep30-21swapper/322:09:053
277412120,0sleep10-21swapper/122:37:461
129999120,3cyclictest12879-21ssh22:06:151
1304991110,1cyclictest28-21ksoftirqd/200:25:002
129999114,2cyclictest508-21dbus-daemon19:29:001
129999111,2cyclictest1-21systemd19:45:151
129999110,3cyclictest502-21systemd-logind21:59:111
129999110,3cyclictest19982-21systemd-journal20:30:001
129999110,2cyclictest19982-21systemd-journal21:37:551
129999110,2cyclictest19982-21systemd-journal21:34:351
129999103,2cyclictest27585-21munin-run00:05:001
129999102,3cyclictest13014-21ntpq21:45:181
129999102,2cyclictest25572-21ssh00:27:521
129999102,2cyclictest12338-21ssh23:10:231
129999101,3cyclictest3623-21munin-node19:15:021
129999100,3cyclictest8789-21/usr/sbin/munin23:30:171
129999100,3cyclictest502-21systemd-logind21:25:491
129999100,3cyclictest19982-21systemd-journal23:10:001
129999100,3cyclictest15315-21plymouth19:40:011
129999100,3cyclictest12354-21rm00:16:501
129999100,3cyclictest1028-21cron20:20:011
129999100,2cyclictest1-21systemd00:00:001
12999993,1cyclictest2835-21fschecks_count00:10:161
12999993,1cyclictest0-21swapper/123:40:501
12999992,3cyclictest30654-21snmpd20:32:101
12999992,3cyclictest17598-21apt-get22:10:101
12999992,2cyclictest467-21ssh22:40:411
12999992,2cyclictest2407-21ssh22:00:031
12999992,2cyclictest19533-21expr21:00:141
12999992,1cyclictest27342-21cron00:30:001
12999991,3cyclictest21593-21idleruntime-cro00:25:001
12999991,3cyclictest18883-21cat23:15:151
12999991,2cyclictest29741-11brltty22:15:031
12999991,2cyclictest20235-21sh21:50:151
12999991,2cyclictest1-21systemd19:43:351
12999991,1cyclictest19982-21systemd-journal21:07:311
12999990,4cyclictest15815-21ssh22:30:141
12999990,3cyclictest9030-21ntp_states22:25:191
12999990,3cyclictest8127-21cat20:35:151
12999990,3cyclictest6982-21rm21:20:151
12999990,3cyclictest6940-21cat23:50:161
12999990,3cyclictest6765-21grep22:45:161
12999990,3cyclictest5736-21sshd23:27:531
12999990,3cyclictest32256-21expr21:15:171
12999990,3cyclictest31114-21ls23:45:121
12999990,3cyclictest30243-21sh23:00:491
12999990,3cyclictest29059-21/usr/sbin/munin00:05:201
12999990,3cyclictest27676-21basename20:05:171
12999990,3cyclictest24127-21cat21:10:141
12999990,3cyclictest21030-21diskstats22:55:141
12999990,3cyclictest14017-21/usr/sbin/munin22:50:171
12999990,3cyclictest1339-21ssh00:35:071
12999990,3cyclictest12222-21gzip19:30:201
12999990,2cyclictest502-21systemd-logind21:40:201
12999990,2cyclictest2008-21sed22:20:231
12999990,2cyclictest19982-21systemd-journal23:36:561
12999990,2cyclictest19982-21systemd-journal20:55:211
12999990,2cyclictest19982-21systemd-journal19:55:161
12999990,2cyclictest19982-21systemd-journal19:55:161
12959998,1cyclictest12-21ksoftirqd/021:35:010
3955280,0sleep20-21swapper/223:05:172
21861280,1sleep30-21swapper/321:50:513
13089984,3cyclictest19982-21systemd-journal00:30:123
13089983,4cyclictest0-21swapper/319:37:203
13089983,3cyclictest19982-21systemd-journal20:09:413
13049984,3cyclictest19982-21systemd-journal22:38:002
13049983,3cyclictest19982-21systemd-journal21:51:172
13049983,3cyclictest19982-21systemd-journal00:14:592
12999982,1cyclictest30474-21mailstats20:10:241
12999982,1cyclictest20295-21expr19:50:131
12999980,3cyclictest6727-21grep19:20:131
12999980,3cyclictest26294-21grep23:20:161
12999980,3cyclictest25446-21basename20:00:161
12999980,3cyclictest2143-21sort20:20:201
12999980,3cyclictest12846-21expr20:45:131
12999980,3cyclictest10615-21expr20:40:131
12999980,2cyclictest15155-21fschecks_count20:50:131
12959983,3cyclictest19982-21systemd-journal22:42:490
12959983,3cyclictest19982-21systemd-journal22:07:420
8007270,1sleep27999-21apt-get22:25:142
13089973,3cyclictest508-21dbus-daemon19:27:443
13089973,3cyclictest15371-21if_enp4s020:50:153
13089973,3cyclictest11736-21in:imuxsock19:32:443
13089973,3cyclictest0-21swapper/323:55:153
13089973,3cyclictest0-21swapper/323:40:293
13089973,2cyclictest19982-21systemd-journal23:11:473
13089973,1cyclictest0-21swapper/322:03:583
13089973,1cyclictest0-21swapper/300:29:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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