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2026-01-11 - 13:16
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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 Jan 11, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
318532296265,20sleep10-21swapper/119:07:251
319742294239,17sleep20-21swapper/219:08:552
320532288223,21sleep30-21swapper/319:09:573
318732259235,15sleep00-21swapper/019:07:360
303122660,0sleep20-21swapper/223:30:302
274072620,0sleep00-21swapper/000:28:140
274072620,0sleep00-21swapper/000:28:140
97892610,0sleep20-21swapper/200:17:222
217422590,0sleep20-21swapper/223:05:442
141382580,0sleep00-21swapper/000:20:130
184952570,0sleep20-21swapper/200:22:432
57802550,0sleep20-21swapper/223:15:362
39772530,0sleep30-21swapper/322:35:253
90972190,0sleep10-21swapper/123:57:151
252792190,1sleep10-21swapper/121:30:201
161052180,0sleep10-21swapper/100:01:161
145442180,0sleep00-21swapper/021:24:510
223752170,0sleep10-21swapper/121:29:161
307662160,0sleep30-21swapper/322:32:253
29042150,0sleep00-21swapper/023:14:460
139942140,0sleep013995-21latency00:00:150
3216299110,2cyclictest27350-21munin-run23:10:001
3216299103,2cyclictest22380-21ssh00:25:131
3216299103,2cyclictest22380-21ssh00:25:131
3216299101,3cyclictest275-21systemd-journal19:32:031
3216299101,2cyclictest275-21systemd-journal21:42:221
3216299100,3cyclictest275-21systemd-journal23:05:001
3216299100,3cyclictest275-21systemd-journal22:35:231
321669998,1cyclictest28-21ksoftirqd/219:40:002
321669998,1cyclictest28-21ksoftirqd/200:00:012
321629993,2cyclictest658-21snmpd19:45:071
321629993,2cyclictest25502-21sh21:11:011
321629992,2cyclictest21486-21ssh00:05:121
321629992,2cyclictest1843-21rm21:16:261
321629992,2cyclictest16491-21sh00:21:091
321629992,2cyclictest14595-21date20:50:151
321629992,1cyclictest0-21swapper/122:16:581
321629992,1cyclictest0-21swapper/100:11:381
321629990,3cyclictest4661-21rm21:37:381
321629990,3cyclictest4243-21latency_hist20:30:001
321629990,3cyclictest275-21systemd-journal19:25:001
321629990,3cyclictest10665-21sshd00:18:031
321629990,2cyclictest4690-21perl23:35:131
321629990,2cyclictest275-21systemd-journal22:49:571
321589990,8cyclictest22734-21ssh22:46:510
7337280,1sleep37338-21cstates21:20:123
5024280,0sleep00-21swapper/022:16:360
321669986,1cyclictest28-21ksoftirqd/222:00:022
321629983,3cyclictest2029-21grep20:25:001
321629983,1cyclictest28990-21rm22:31:021
321629983,1cyclictest24671-21sh22:29:041
321629982,2cyclictest7252-21expr21:20:121
321629982,2cyclictest6815-21ssh21:58:571
321629982,2cyclictest658-21snmpd20:56:191
321629982,2cyclictest504-21dbus-daemon19:11:151
321629982,2cyclictest25876-21ssh23:28:261
321629982,2cyclictest0-21swapper/122:55:071
321629982,1cyclictest15075-21ssh22:22:591
321629981,2cyclictest0-21swapper/100:32:461
321629981,1cyclictest0-21swapper/122:02:131
321629981,1cyclictest0-21swapper/119:40:191
321629980,3cyclictest3492-21rm23:15:021
321629980,3cyclictest31247-21/usr/sbin/munin20:15:191
321629980,3cyclictest30051-21sh22:12:331
321629980,3cyclictest2861-21ssh23:14:441
321629980,3cyclictest275-21systemd-journal23:48:211
321629980,3cyclictest21059-21ssh21:47:371
321629980,3cyclictest1946-21rm23:53:001
321629980,3cyclictest17943-21ssh23:43:171
321629980,3cyclictest17817-21head22:05:141
321629980,3cyclictest13496-21rm22:41:071
321629980,2cyclictest275-21systemd-journal22:50:241
321589987,1cyclictest12-21ksoftirqd/020:25:010
321589986,1cyclictest12-21ksoftirqd/020:40:010
12304280,0sleep20-21swapper/223:20:122
321709974,2cyclictest504-21dbus-daemon21:20:003
321709974,2cyclictest504-21dbus-daemon19:20:003
321709974,2cyclictest28784-21diskstats23:30:133
321709973,3cyclictest658-21snmpd21:50:313
321709973,3cyclictest658-21snmpd19:30:123
321709973,3cyclictest5777-21cat00:15:123
321709973,3cyclictest275-21systemd-journal22:30:013
321709973,3cyclictest275-21systemd-journal20:29:383
321709973,3cyclictest14395-21cat19:40:123
321709973,3cyclictest11011-21sed22:20:153
321709973,1cyclictest0-21swapper/322:58:373
321709971,1cyclictest141rcu_preempt23:35:103
321669973,2cyclictest275-21systemd-journal00:30:002
321669973,2cyclictest275-21systemd-journal00:30:002
321669973,1cyclictest0-21swapper/200:04:172
321669970,7cyclictest0-21swapper/221:46:102
321669970,6cyclictest0-21swapper/223:40:182
321629974,2cyclictest560-21gdbus00:40:011
321629972,1cyclictest8667-21chrt20:36:031
321629971,2cyclictest9833-21grep20:40:151
321629971,2cyclictest674-21lldpd19:37:031
321629971,2cyclictest658-21snmpd21:09:531
321629971,2cyclictest658-21snmpd20:12:511
321629971,2cyclictest24868-21date20:00:211
321629970,3cyclictest8553-21ntp_states19:25:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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