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2025-12-12 - 10:14
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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 Fri Dec 12, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221292308276,20sleep20-21swapper/219:05:492
224752299271,18sleep10-21swapper/119:09:581
222002278245,21sleep00-21swapper/019:06:390
221982260225,22sleep30-21swapper/319:06:383
303452650,0sleep20-21swapper/222:10:132
46342590,0sleep10-21swapper/100:39:311
227072530,0sleep00-21swapper/023:39:250
68712520,0sleep00-21swapper/023:03:560
290902170,0sleep00-21swapper/000:31:500
206482160,0sleep00-21swapper/022:02:510
249492150,0sleep00-21swapper/023:16:460
2259799141,4cyclictest12574-21ls21:10:013
156762140,0sleep30-21swapper/300:21:083
307672130,0sleep20-21swapper/220:35:232
22593991211,1cyclictest28-21ksoftirqd/200:00:002
162422110,5sleep1211rcuc/120:05:141
254092100,0sleep10-21swapper/122:30:181
2259799102,3cyclictest13460-21cat20:00:013
2259799101,6cyclictest27830-21wc20:30:163
2259799101,6cyclictest25248-21ssh21:18:493
225979996,1cyclictest32384-21apt-get19:30:123
225979992,3cyclictest763-21ssh23:23:013
225979991,6cyclictest28847-21ssh22:08:593
225979991,5cyclictest5805-21sh23:02:543
225979991,3cyclictest29251-21expr21:45:163
225979990,8cyclictest2773-21sh23:48:063
225979990,6cyclictest25332-21ssh22:53:383
225979990,6cyclictest14133-21ssh22:21:283
225979990,6cyclictest1236-21sh22:35:323
225979990,6cyclictest12170-21ssh21:32:363
225939997,2cyclictest28-21ksoftirqd/223:30:122
225909994,3cyclictest19982-21systemd-journal19:14:251
225869996,2cyclictest12-21ksoftirqd/023:59:590
19857290,1sleep20-21swapper/222:02:002
225979985,2cyclictest12397-21apt-get23:55:023
225979983,4cyclictest6399-21munin-plugin-st19:45:003
225979982,2cyclictest14960-21wc20:00:193
225979981,5cyclictest20005-21ssh23:36:443
225979981,3cyclictest6972-21cat20:55:173
225979981,3cyclictest5597-21rm23:26:053
225979981,3cyclictest26013-21ssh22:30:223
225979981,3cyclictest18535-21/usr/sbin/munin22:25:153
225979981,3cyclictest16778-21cstates22:00:143
225979981,3cyclictest13879-21ssh23:32:313
225979980,6cyclictest7675-21ssh21:29:523
225979980,6cyclictest12160-21ssh22:44:343
225979980,6cyclictest12112-21sh21:56:033
225979980,5cyclictest9335-21ssh00:16:143
225979980,5cyclictest30043-21ssh22:56:253
225979980,5cyclictest26009-21ssh00:30:113
225979980,5cyclictest24576-21ssh23:16:243
225979980,5cyclictest21680-21ssh00:00:483
225979980,5cyclictest20594-21ssh23:14:133
225979980,5cyclictest17137-21ssh21:12:413
225979980,5cyclictest1352-21sh22:12:083
225979980,5cyclictest11697-21taskset23:07:043
225939985,2cyclictest508-21dbus-daemon21:54:142
225939984,3cyclictest19982-21systemd-journal00:16:552
225939984,3cyclictest11736-21in:imuxsock20:12:262
225939984,1cyclictest28786-21/usr/sbin/munin23:20:252
225939983,4cyclictest0-21swapper/223:35:122
225939983,3cyclictest19982-21systemd-journal19:31:302
225909985,2cyclictest24220-21ssh00:28:321
225909985,2cyclictest19982-21systemd-journal21:51:441
225909983,3cyclictest19982-21systemd-journal21:59:401
225909983,3cyclictest19982-21systemd-journal21:36:171
225909983,3cyclictest19982-21systemd-journal20:54:341
225909983,3cyclictest19982-21systemd-journal20:47:031
225909982,3cyclictest32130-21awk19:30:011
225909980,6cyclictest19982-21systemd-journal23:58:581
225909980,3cyclictest7997-21perf23:05:011
225869986,1cyclictest12-21ksoftirqd/023:15:010
225869986,1cyclictest12-21ksoftirqd/021:35:000
225869984,3cyclictest19982-21systemd-journal22:50:010
225869984,2cyclictest19982-21systemd-journal21:44:370
225869982,3cyclictest17562-21ls22:25:010
16539280,0sleep30-21swapper/320:05:173
4479270,0sleep10-21swapper/122:15:041
225979975,1cyclictest1664-21apt-get20:45:143
225979974,2cyclictest25320-21grep23:40:193
225979974,2cyclictest11736-21in:imuxsock19:45:013
225979973,3cyclictest9047-21cat21:00:183
225979973,3cyclictest508-21dbus-daemon20:15:213
225979973,3cyclictest3565-21tail21:50:193
225979973,3cyclictest327-21awk20:40:153
225979973,3cyclictest32663-21wc00:35:163
225979973,3cyclictest30654-21snmpd21:41:013
225979973,3cyclictest26460-21ssh00:05:143
225979973,3cyclictest20083-21gltestperf00:25:173
225979973,3cyclictest18097-21basename20:10:133
225979973,3cyclictest16380-21/usr/sbin/munin21:35:173
225979973,3cyclictest13304-21expr22:45:113
225979972,4cyclictest7107-21rm23:50:343
225979972,4cyclictest0-21swapper/320:25:153
225979972,3cyclictest29658-21sshd19:22:233
225979972,3cyclictest19982-21systemd-journal20:21:413
225979972,3cyclictest19982-21systemd-journal19:52:303
225979972,3cyclictest19982-21systemd-journal19:16:323
225979971,2cyclictest7422-21sh22:16:293
225979971,2cyclictest27606-21ssh21:20:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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