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2026-09-18 - 00:24
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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 Thu Sep 17, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
247322326295,20sleep20-21swapper/207:05:312
248422322291,21sleep10-21swapper/107:06:531
247982272241,21sleep00-21swapper/007:06:200
248592262230,21sleep30-21swapper/307:07:083
300982630,0sleep30-21swapper/310:55:123
295882590,0sleep10-21swapper/112:11:451
248212550,0sleep10-21swapper/109:34:521
132252520,0sleep00-21swapper/012:21:220
210482500,0sleep20-21swapper/211:28:182
287222450,0sleep20-21swapper/210:15:152
217292230,0sleep10-21swapper/110:50:141
290232200,0sleep00-21swapper/010:35:150
158052200,0sleep00-21swapper/010:07:190
7652190,0sleep00-21swapper/012:33:590
140252190,0sleep20-21swapper/209:05:152
13232190,0sleep00-21swapper/009:40:130
25185991817,1cyclictest20328-21lspci09:50:312
62522170,0sleep30-21swapper/311:19:433
98002160,0sleep10-21swapper/110:42:491
43022160,0sleep30-21swapper/309:21:543
9712150,0sleep30-21swapper/307:25:143
200362150,0sleep10-21swapper/111:08:281
115322140,0sleep10-21swapper/109:26:031
25173991310,2cyclictest12-21ksoftirqd/009:15:000
45102100,0sleep20-21swapper/211:37:432
251739996,2cyclictest14415-21snmpd11:43:310
251739996,2cyclictest12-21ksoftirqd/008:30:000
22550290,0sleep00-21swapper/012:27:110
4218280,0sleep10-21swapper/112:35:211
251909985,2cyclictest34-21ksoftirqd/307:20:003
251909983,3cyclictest275-21systemd-journal08:01:303
251859981,6cyclictest27370-21idleruntime-cro07:15:002
251739987,1cyclictest12-21ksoftirqd/011:35:010
251739987,1cyclictest121ksoftirqd/010:20:010
251739986,1cyclictest14946-21hddtemp_smartct07:55:140
251739983,3cyclictest275-21systemd-journal08:47:080
29505270,0sleep10-21swapper/109:37:171
251909974,2cyclictest10540-21sshd08:55:383
251909973,3cyclictest304-21systemd-udevd10:27:363
251909973,3cyclictest304-21systemd-udevd10:13:163
251909973,3cyclictest28078-21memory09:55:153
251909973,3cyclictest275-21systemd-journal10:50:563
251909972,4cyclictest5999-21sed08:45:203
251859973,3cyclictest275-21systemd-journal11:32:232
251859973,3cyclictest275-21systemd-journal10:27:502
251859973,3cyclictest275-21systemd-journal09:15:282
251859973,3cyclictest2444-21systemctl09:40:182
251859970,4cyclictest2018-21apt08:39:592
251779974,2cyclictest275-21systemd-journal12:30:001
251779973,3cyclictest275-21systemd-journal11:55:431
251779973,3cyclictest22050-11brltty10:34:561
251739975,1cyclictest0-21swapper/008:20:140
251739974,2cyclictest12-21ksoftirqd/009:10:000
251739973,3cyclictest275-21systemd-journal11:50:450
251739973,3cyclictest18176-21ntpq09:30:150
251739973,3cyclictest14415-21snmpd12:00:130
251739972,3cyclictest275-21systemd-journal11:26:510
17525270,0sleep00-21swapper/012:05:080
16450270,0sleep30-21swapper/309:29:513
251909966,0cyclictest0-21swapper/310:31:383
251909964,1cyclictest7116-21df_inode08:50:143
251909963,2cyclictest8433-21ssh11:00:573
251909963,2cyclictest7681-21ssh10:02:303
251909963,2cyclictest504-21dbus-daemon08:36:383
251909963,2cyclictest504-21dbus-daemon08:12:523
251909963,2cyclictest504-21dbus-daemon07:49:273
251909963,2cyclictest4303-21grep07:30:203
251909963,2cyclictest3673-21ssh11:56:223
251909963,2cyclictest32526-21cut11:35:123
251909963,2cyclictest32168-21taskset07:21:323
251909963,2cyclictest31534-21rm10:35:593
251909963,2cyclictest30799-21sh11:53:433
251909963,2cyclictest304-21systemd-udevd09:16:353
251909963,2cyclictest2943-21ntpq12:15:183
251909963,2cyclictest275-21systemd-journal11:42:323
251909963,2cyclictest275-21systemd-journal07:35:413
251909963,2cyclictest26463-21ssh11:31:043
251909963,2cyclictest25908-21ssh12:10:103
251909963,2cyclictest22058-21ssh11:48:223
251909963,2cyclictest22058-21ssh11:48:223
251909963,2cyclictest18301-21ssh09:50:133
251909963,2cyclictest14415-21snmpd11:29:373
251909963,2cyclictest11432-21ssh11:22:173
251909963,2cyclictest0-21swapper/310:05:023
251909962,3cyclictest31552-21cat08:30:193
251909962,3cyclictest1537-21df09:40:123
251909962,3cyclictest14415-21snmpd12:31:513
251909962,3cyclictest14415-21snmpd12:21:123
251909962,3cyclictest14415-21snmpd12:05:203
251909962,3cyclictest14415-21snmpd10:40:253
251909962,3cyclictest14415-21snmpd09:47:123
251909962,3cyclictest14415-21snmpd09:33:213
251909962,3cyclictest14415-21snmpd08:22:283
251909962,3cyclictest13970-21expr09:05:153
251909962,3cyclictest0-21swapper/307:55:353
251909962,1cyclictest0-21swapper/310:45:173
251909961,1cyclictest12128-21apt-get07:50:093
251909961,1cyclictest12128-21apt-get07:50:093
251909960,6cyclictest0-21swapper/311:05:263
251909960,6cyclictest0-21swapper/310:15:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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