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2026-05-17 - 03:11
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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 Sun May 17, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
85942303274,19sleep20-21swapper/219:07:162
85092278247,20sleep00-21swapper/019:06:260
87112275245,18sleep10-21swapper/119:08:481
84962255229,17sleep30-21swapper/319:06:173
59692220,0sleep30-21swapper/322:52:173
73352180,0sleep10-21swapper/121:34:501
256992180,0sleep20-21swapper/223:04:412
114312170,0sleep00-21swapper/022:35:320
310422160,0sleep10-21swapper/122:47:581
299752150,0sleep00-21swapper/021:48:190
290832140,0sleep10-21swapper/100:24:561
891699132,6cyclictest15277-21sh23:36:481
891699125,3cyclictest0-21swapper/123:28:301
891699122,6cyclictest8536-21ssh23:13:421
891699122,6cyclictest0-21swapper/122:54:121
891699112,5cyclictest17200-21seq20:36:471
891699112,5cyclictest16457-21ssh00:36:111
891699111,1cyclictest3500-21ssh22:11:121
891699111,1cyclictest2186-21apt-get20:05:121
891699110,2cyclictest22811-21rm23:41:111
891699110,2cyclictest2264-21sh00:08:191
891699110,1cyclictest5069-21ssh21:52:471
891699110,1cyclictest26153-21ssh21:25:521
891699110,1cyclictest11089-21apt-get20:25:111
136362110,0sleep30-21swapper/323:55:193
891699102,7cyclictest29489-21systemctl23:45:181
891699102,4cyclictest1707-21sh00:27:291
891699100,3cyclictest27967-21ssh00:04:291
891699100,3cyclictest1749-21ssh23:09:521
891699100,3cyclictest10394-21ssh23:34:391
891699100,2cyclictest6132-21sed00:30:151
891699100,2cyclictest30857-21diskmemload21:45:361
891699100,2cyclictest10291-21grep19:10:201
891699100,1cyclictest9120-21ssh21:55:161
891699100,1cyclictest32380-21dpkg20:00:111
891699100,1cyclictest24815-21/usr/sbin/munin22:05:161
891699100,1cyclictest22252-21rm21:43:391
891699100,1cyclictest19954-21ssh22:01:351
89169993,5cyclictest13966-21sh00:15:161
89169992,6cyclictest7378-21ssh00:10:531
89169992,6cyclictest658-21snmpd22:55:031
89169992,6cyclictest12127-21grep23:15:201
89169992,6cyclictest0-21swapper/122:24:461
89169992,1cyclictest29877-21munin-plugin-st19:55:011
89169991,3cyclictest32654-21mailstats21:10:191
89169991,1cyclictest8867-21apt-get20:20:121
89169991,1cyclictest8579-21cron20:20:011
89169991,1cyclictest1218-21apt-get22:30:111
89169991,0cyclictest18334-21apt-get23:00:121
89169990,2cyclictest8061-21ssh21:35:121
89169990,2cyclictest275-21systemd-journal20:15:011
89169990,2cyclictest25390-21ls19:45:011
89169990,2cyclictest21598-21chrt20:45:571
89169990,2cyclictest19655-21cat19:30:281
89169990,1cyclictest9244-21sh22:35:031
89169990,1cyclictest8301-21ntp_states21:15:191
89169990,1cyclictest658-21snmpd20:57:111
89169990,1cyclictest275-21systemd-journal20:52:141
89169990,1cyclictest21595-21ssh23:20:591
89169990,1cyclictest18700-21cron19:30:011
89169990,1cyclictest14169-21ssh22:18:031
89169990,1cyclictest12340-21apt-get23:55:121
89169990,1cyclictest0-21swapper/123:53:191
89169990,1cyclictest0-21swapper/122:28:231
89169990,1cyclictest0-21swapper/121:21:471
89239985,2cyclictest18503-21ssh23:20:003
89239984,3cyclictest504-21dbus-daemon23:40:003
89239983,2cyclictest275-21systemd-journal22:55:323
89169982,1cyclictest29125-21expr21:05:141
89169981,1cyclictest21189-21apt-get19:35:121
89169980,3cyclictest30189-21cat19:55:121
89169980,3cyclictest15994-21chrt19:22:481
89169980,2cyclictest25759-21wc19:45:121
89169980,2cyclictest18850-21grep22:40:181
89169980,2cyclictest18768-21cut20:40:181
89169980,2cyclictest18768-21cut20:40:181
89169980,1cyclictest28627-21apt21:05:011
89169980,1cyclictest15265-21cron20:35:011
89169980,1cyclictest11466-21munin-node19:15:011
89129986,1cyclictest12-21ksoftirqd/021:15:000
89129984,3cyclictest275-21systemd-journal20:04:300
89129983,2cyclictest761-21perf22:30:010
25996280,0sleep20-21swapper/222:25:172
89239974,2cyclictest275-21systemd-journal21:58:583
89239973,3cyclictest275-21systemd-journal22:06:583
89239973,3cyclictest20631-21packagekitd00:05:063
89239972,1cyclictest141rcu_preempt20:42:223
89239972,1cyclictest141rcu_preempt20:42:223
89239970,1cyclictest30857-21diskmemload00:13:033
89199974,2cyclictest28643-21dump-pmu-power00:05:002
89199974,2cyclictest28-21ksoftirqd/219:15:012
89199973,2cyclictest275-21systemd-journal20:25:202
89199972,3cyclictest20950-21munin-plugin-st00:20:002
89129973,3cyclictest4436-21df23:50:130
89129973,3cyclictest275-21systemd-journal19:31:540
18594270,0sleep30-21swapper/321:21:223
16032270,0sleep20-21swapper/220:35:132
89239966,0cyclictest0-21swapper/322:15:033
89239966,0cyclictest0-21swapper/321:41:213
89239966,0cyclictest0-21swapper/300:22:543
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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