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2025-12-03 - 00:08
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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 Dec 02, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
252002324292,20sleep20-21swapper/207:06:452
254372291256,22sleep10-21swapper/107:09:451
252342263230,21sleep00-21swapper/007:07:110
253382262229,20sleep30-21swapper/307:08:313
141912550,0sleep00-21swapper/010:00:420
76532530,0sleep10-21swapper/112:02:311
290432220,0sleep10-21swapper/111:03:211
311762170,0sleep20-21swapper/208:30:172
203922170,0sleep30-21swapper/311:21:413
325052150,0sleep20-21swapper/212:21:312
21712150,0sleep30-21swapper/311:58:173
302172140,0sleep30-21swapper/309:20:193
46162130,0sleep10-21swapper/109:54:381
66032110,0sleep20-21swapper/212:01:242
2557099119,1cyclictest29741-11brltty10:28:083
255709994,3cyclictest19982-21systemd-journal11:18:363
255679994,3cyclictest19982-21systemd-journal07:30:242
255679994,3cyclictest19982-21systemd-journal07:27:542
255649995,3cyclictest508-21dbus-daemon09:14:411
255649992,3cyclictest19982-21systemd-journal11:26:561
21954290,0sleep20-21swapper/212:36:282
31096280,1sleep10-21swapper/108:30:161
255709986,1cyclictest34-21ksoftirqd/308:40:013
255709985,2cyclictest508-21dbus-daemon08:59:403
255709985,2cyclictest34-21ksoftirqd/307:20:013
255709984,3cyclictest508-21dbus-daemon07:50:163
255679984,3cyclictest19982-21systemd-journal10:10:012
255679984,3cyclictest19982-21systemd-journal07:20:012
255679983,3cyclictest7661-21lldpd10:37:452
255679983,3cyclictest19982-21systemd-journal07:11:382
255679980,1cyclictest0-21swapper/211:25:112
255649983,3cyclictest19982-21systemd-journal09:05:301
255649983,3cyclictest19982-21systemd-journal07:38:451
255649983,3cyclictest19982-21systemd-journal07:31:141
255599983,3cyclictest19982-21systemd-journal12:22:010
255599983,3cyclictest19982-21systemd-journal08:44:140
255599983,3cyclictest19982-21systemd-journal08:32:200
255599983,3cyclictest19982-21systemd-journal07:51:410
255599980,5cyclictest0-21swapper/011:25:510
7504270,0sleep20-21swapper/210:46:162
27059270,0sleep00-21swapper/007:10:200
255709975,1cyclictest34-21ksoftirqd/312:10:003
255709974,2cyclictest4469-21cron08:45:013
255709974,2cyclictest17849-21df_inode10:30:133
255709974,2cyclictest11736-21in:imuxsock10:15:373
255709973,3cyclictest508-21dbus-daemon11:06:303
255709973,3cyclictest508-21dbus-daemon09:10:313
255709973,3cyclictest30654-21snmpd10:50:263
255709973,3cyclictest30654-21snmpd10:41:263
255709973,3cyclictest0-21swapper/309:41:133
255709973,1cyclictest0-21swapper/311:01:263
255709973,1cyclictest0-21swapper/309:45:363
255709972,4cyclictest7661-21lldpd09:19:253
255709972,3cyclictest19982-21systemd-journal09:25:333
255709972,3cyclictest19982-21systemd-journal08:25:193
255709972,3cyclictest19982-21systemd-journal08:11:423
255709971,4cyclictest19982-21systemd-journal10:13:573
255679974,2cyclictest19982-21systemd-journal12:15:562
255679974,2cyclictest19982-21systemd-journal09:35:342
255679974,2cyclictest14690-21sshd12:31:192
255679973,3cyclictest30654-21snmpd11:19:092
255679973,3cyclictest30654-21snmpd09:11:102
255679973,3cyclictest19982-21systemd-journal09:25:012
255679973,3cyclictest19982-21systemd-journal09:15:322
255679973,1cyclictest24002-21awk11:00:012
255679973,1cyclictest24002-21awk11:00:012
255679973,1cyclictest0-21swapper/211:32:142
255679972,3cyclictest19982-21systemd-journal11:55:532
255679972,3cyclictest19982-21systemd-journal09:49:362
255679972,1cyclictest0-21swapper/209:51:072
255679970,4cyclictest11485-21idleruntime-cro09:00:012
255649974,2cyclictest508-21dbus-daemon08:54:151
255649974,2cyclictest508-21dbus-daemon08:46:451
255649973,3cyclictest9976-21users09:30:221
255649973,3cyclictest695-21sshd07:25:111
255649973,3cyclictest508-21dbus-daemon12:30:001
255649973,3cyclictest30654-21snmpd10:38:311
255649973,3cyclictest19982-21systemd-journal11:21:311
255649973,3cyclictest19982-21systemd-journal10:43:201
255649973,3cyclictest0-21swapper/112:18:421
255649973,3cyclictest0-21swapper/110:29:541
255649973,1cyclictest0-21swapper/111:44:371
255649972,3cyclictest19982-21systemd-journal08:18:231
255649972,2cyclictest32099-21grep11:30:201
255599974,2cyclictest508-21dbus-daemon11:22:210
255599974,2cyclictest29006-21cron12:20:000
255599974,2cyclictest19982-21systemd-journal08:07:570
255599973,3cyclictest7896-21df07:40:130
255599973,3cyclictest668-21runrttasks11:00:480
255599973,3cyclictest5422-21grep10:20:150
255599973,3cyclictest508-21dbus-daemon12:00:440
255599973,3cyclictest508-21dbus-daemon11:45:180
255599973,3cyclictest508-21dbus-daemon10:56:050
255599973,3cyclictest508-21dbus-daemon10:56:050
255599973,3cyclictest27545-21sshd09:45:400
255599973,3cyclictest15958-21diskmemload10:27:390
255599972,3cyclictest7661-21lldpd10:36:300
255599972,1cyclictest0-21swapper/012:10:020
255599971,4cyclictest2183-21rm11:58:180
255599971,3cyclictest6452-21rm11:35:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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