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2025-07-15 - 22:01
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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 15, 2025 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36052304281,14sleep10-21swapper/107:09:581
16322275242,22sleep00-21swapper/007:05:060
32762272217,42sleep30-21swapper/307:05:583
35522262229,21sleep20-21swapper/207:09:182
154552610,1sleep215449-21perf07:35:002
57962600,0sleep00-21swapper/009:20:010
29852600,0sleep10-21swapper/111:06:141
189092590,0sleep20-21swapper/210:52:372
129722560,0sleep20-21swapper/212:25:512
212312200,0sleep30-21swapper/312:31:493
257972170,0sleep30-21swapper/312:35:133
66202130,0sleep10-21swapper/112:21:581
5062130,1sleep20-21swapper/210:10:172
38042130,0sleep20-21swapper/211:07:112
113532130,0sleep10-21swapper/109:24:461
110302120,0sleep00-21swapper/007:25:010
10882110,0sleep10-21swapper/109:43:171
99912100,1sleep10-21swapper/108:30:211
373099109,1cyclictest22-21ksoftirqd/112:40:001
373099107,2cyclictest22-21ksoftirqd/110:00:011
37439994,3cyclictest19982-21systemd-journal07:51:433
37309998,1cyclictest29741-11brltty10:47:071
37309997,2cyclictest22-21ksoftirqd/108:10:001
37309994,3cyclictest19982-21systemd-journal09:49:081
37289994,3cyclictest19982-21systemd-journal08:01:290
37289994,3cyclictest19982-21systemd-journal07:27:410
8088280,0sleep30-21swapper/309:49:243
37439985,2cyclictest11736-21in:imuxsock10:29:113
37439984,3cyclictest19982-21systemd-journal07:38:533
37439983,3cyclictest19982-21systemd-journal09:08:433
37349986,1cyclictest28-21ksoftirqd/212:15:002
37349986,1cyclictest28-21ksoftirqd/207:40:002
37349986,1cyclictest19236-21pmu-power09:30:172
37349984,3cyclictest19982-21systemd-journal12:06:482
37349984,3cyclictest19982-21systemd-journal11:27:352
37349983,3cyclictest7661-21lldpd11:38:232
37349983,3cyclictest19982-21systemd-journal12:20:422
37349983,3cyclictest19982-21systemd-journal11:53:022
37309987,1cyclictest22-21ksoftirqd/107:15:011
37309986,1cyclictest8747-21sh07:20:001
37309983,3cyclictest19982-21systemd-journal08:50:421
37289985,2cyclictest10477-21idleruntime-cro08:35:000
37289984,3cyclictest19982-21systemd-journal07:55:420
37289984,2cyclictest19982-21systemd-journal11:15:290
37289984,2cyclictest19982-21systemd-journal10:22:050
37289983,3cyclictest19982-21systemd-journal10:42:070
37289983,3cyclictest19982-21systemd-journal10:10:240
37289980,5cyclictest8268-21idleruntime-cro08:30:000
19699280,0chrt0-21swapper/012:09:120
13994280,0sleep30-21swapper/311:40:193
37439974,2cyclictest1-21systemd07:41:023
37439974,2cyclictest1080-21ntp_states09:15:173
37439973,3cyclictest3782-21cron08:20:003
37439973,3cyclictest14026-21grep07:30:153
37439973,1cyclictest0-21swapper/312:24:043
37439973,1cyclictest0-21swapper/311:25:163
37439973,1cyclictest0-21swapper/310:54:583
37439973,1cyclictest0-21swapper/309:39:103
37439972,4cyclictest0-21swapper/311:45:143
37439972,3cyclictest19982-21systemd-journal08:24:253
37439972,1cyclictest0-21swapper/310:15:233
37439970,3cyclictest11412-21apt-get10:20:133
37349975,2cyclictest28-21ksoftirqd/210:05:012
37349974,2cyclictest508-21dbus-daemon10:32:552
37349974,2cyclictest508-21dbus-daemon09:50:482
37349973,3cyclictest508-21dbus-daemon09:27:502
37349973,3cyclictest508-21dbus-daemon08:23:352
37349973,3cyclictest30654-21snmpd09:03:472
37349973,3cyclictest19982-21systemd-journal07:54:552
37349973,1cyclictest0-21swapper/211:44:332
37349973,1cyclictest0-21swapper/211:33:042
37349971,3cyclictest32090-21apt09:15:012
37309976,1cyclictest22-21ksoftirqd/109:15:011
37309975,1cyclictest5730-21dump-pmu-power11:35:001
37309973,3cyclictest30654-21snmpd07:42:121
37309973,3cyclictest2770-21ntp_states08:15:171
37309973,3cyclictest19982-21systemd-journal09:54:261
37309973,3cyclictest19719-21ntpq11:20:201
37309973,3cyclictest1-21systemd12:31:001
37309973,3cyclictest0-21swapper/110:25:051
37309973,3cyclictest0-21swapper/110:02:361
37309973,1cyclictest141rcu_preempt09:40:011
37309972,3cyclictest19982-21systemd-journal12:25:011
37309971,3cyclictest13618-21rm11:15:161
37309970,7cyclictest0-21swapper/110:54:201
37289974,2cyclictest508-21dbus-daemon08:18:100
37289974,2cyclictest11736-21in:imuxsock11:22:350
37289973,3cyclictest508-21dbus-daemon11:13:240
37289973,3cyclictest30654-21snmpd11:32:590
37289973,3cyclictest19982-21systemd-journal10:46:170
37289973,3cyclictest19982-21systemd-journal10:10:010
37289973,3cyclictest19982-21systemd-journal09:34:220
37289973,3cyclictest0-21swapper/012:34:140
37289973,1cyclictest0-21swapper/011:59:270
37289970,3cyclictest26126-21sshd10:59:320
37289970,3cyclictest19982-21systemd-journal12:29:530
25503270,0sleep30-21swapper/312:12:513
37439964,1cyclictest0-21swapper/310:05:153
37439963,2cyclictest9796-21ssh10:45:173
37439963,2cyclictest6720-21wc07:15:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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