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2026-08-21 - 13:27
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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 Aug 21, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237592280248,19sleep20-21swapper/219:08:402
237682278252,17sleep10-21swapper/119:08:471
236632272240,22sleep00-21swapper/019:07:250
236352259227,21sleep30-21swapper/319:07:043
214232640,0sleep20-21swapper/222:12:192
68942630,0sleep30-21swapper/322:23:053
219072620,0sleep10-21swapper/123:10:281
20472610,0sleep10-21swapper/119:30:131
176592610,0sleep20-21swapper/222:49:182
39462600,1sleep20-21swapper/219:35:102
76742590,0sleep20-21swapper/221:25:172
33612590,0sleep30-21swapper/323:00:133
291262570,0sleep20-21swapper/221:38:182
286512570,0sleep20-21swapper/223:34:562
203652560,0sleep10-21swapper/120:10:161
32062550,0sleep10-21swapper/123:00:071
56202370,0sleep30-21swapper/323:40:133
60682150,0sleep00-21swapper/022:03:200
22912150,0sleep30-21swapper/322:59:363
242062140,0sleep20-21swapper/223:12:132
35652130,2sleep228-21ksoftirqd/221:42:122
302152130,0sleep10-21swapper/123:35:181
182642130,0sleep30-21swapper/323:47:383
182642130,0sleep30-21swapper/323:47:373
161882120,0sleep00-21swapper/022:09:410
17831290,0sleep20-21swapper/222:30:012
30980280,0sleep00-21swapper/000:34:270
29363280,0sleep20-21swapper/222:17:032
239699986,1cyclictest34-21ksoftirqd/300:00:013
239679984,3cyclictest275-21systemd-journal21:00:552
239629984,3cyclictest275-21systemd-journal20:57:171
239699975,1cyclictest34-21ksoftirqd/319:15:023
239699974,2cyclictest30727-21snmpd23:07:433
239699974,2cyclictest30727-21snmpd22:44:163
239699974,2cyclictest28989-21cron19:20:013
239699973,3cyclictest1614-21apt-get19:30:113
239699973,2cyclictest275-21systemd-journal00:00:553
239699973,1cyclictest0-21swapper/321:28:083
239699970,7cyclictest0-21swapper/322:04:273
239699970,3cyclictest20407-21apt23:30:013
239699970,0cyclictest0-21swapper/323:24:483
239679974,2cyclictest504-21dbus-daemon23:37:352
239679973,3cyclictest853-21ntpq00:35:172
239679973,3cyclictest275-21systemd-journal19:22:542
239679972,3cyclictest30285-21awk20:35:002
239679970,1cyclictest0-21swapper/223:15:132
239629971,5cyclictest31565-21idleruntime-cro19:25:011
239589974,2cyclictest30727-21snmpd21:34:190
239589974,2cyclictest12-21ksoftirqd/019:20:010
239589974,2cyclictest1-21systemd23:59:190
239589973,3cyclictest8670-21df_inode19:45:120
239589973,3cyclictest30727-21snmpd22:13:420
239589972,3cyclictest275-21systemd-journal19:15:010
239589970,5cyclictest11194-21dump-pmu-power23:05:000
22829270,0sleep30-21swapper/321:15:133
22273270,0sleep00-21swapper/000:10:010
239699966,0cyclictest0-21swapper/322:32:293
239699966,0cyclictest0-21swapper/300:07:013
239699963,2cyclictest7101-21cat00:20:133
239699963,2cyclictest5483-21sshd19:36:283
239699963,2cyclictest504-21dbus-daemon23:51:253
239699963,2cyclictest31884-21grep20:35:173
239699963,2cyclictest30727-21snmpd23:31:173
239699963,2cyclictest3027-21sh00:36:313
239699963,2cyclictest29398-21awk23:15:183
239699963,2cyclictest17260-21rm21:30:353
239699963,2cyclictest16935-21swap00:25:203
239699963,2cyclictest16678-21sshd20:02:103
239699963,2cyclictest16293-21ssh22:28:563
239699963,1cyclictest0-21swapper/322:47:033
239699962,3cyclictest6741-21cat19:40:143
239699962,3cyclictest32584-21date00:15:213
239699962,3cyclictest30727-21snmpd22:51:193
239699962,3cyclictest30727-21snmpd21:42:403
239699962,3cyclictest30727-21snmpd21:24:123
239699962,3cyclictest30727-21snmpd21:02:093
239699962,3cyclictest30727-21snmpd20:42:113
239699962,3cyclictest30727-21snmpd20:25:113
239699962,3cyclictest30727-21snmpd19:57:163
239699962,3cyclictest30727-21snmpd19:57:163
239699962,3cyclictest30727-21snmpd19:50:463
239699962,3cyclictest30727-21snmpd19:45:043
239699962,3cyclictest28827-21grep20:30:143
239699962,3cyclictest24723-21cat21:55:123
239699962,3cyclictest16430-21expr21:50:143
239699962,3cyclictest14994-21cat21:10:143
239699962,1cyclictest0-21swapper/323:13:103
239699962,1cyclictest0-21swapper/322:36:193
239699961,3cyclictest275-21systemd-journal21:09:563
239699960,6cyclictest0-21swapper/321:48:493
239699960,5cyclictest24493-21sh00:30:143
239679966,0cyclictest0-21swapper/221:17:222
239679963,2cyclictest8417-21rm00:00:472
239679963,2cyclictest663-21runrttasks23:40:122
239679963,2cyclictest504-21dbus-daemon23:55:192
239679963,2cyclictest504-21dbus-daemon21:13:032
239679963,2cyclictest504-21dbus-daemon20:45:532
239679963,2cyclictest504-21dbus-daemon20:08:462
239679963,2cyclictest31545-21grep21:20:132
239679963,2cyclictest30727-21snmpd00:32:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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