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2026-05-01 - 05:32
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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 May 01, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26932292226,21sleep10-21swapper/119:07:541
27282283252,21sleep30-21swapper/319:08:203
27702275244,20sleep20-21swapper/219:08:522
25422270240,19sleep00-21swapper/019:06:170
88182970,0sleep00-21swapper/021:19:460
155322610,0sleep00-21swapper/000:19:500
83882590,0sleep10-21swapper/120:30:181
81042580,0sleep00-21swapper/022:56:450
86172560,0sleep10-21swapper/100:15:181
315132550,0sleep00-21swapper/022:31:430
255192550,0sleep30-21swapper/322:48:043
122792540,0sleep10-21swapper/122:40:131
50322530,0sleep20-21swapper/200:31:332
234392180,0sleep30-21swapper/321:47:373
126912180,0sleep00-21swapper/022:20:180
126912180,0sleep00-21swapper/022:20:180
88472150,0sleep20-21swapper/222:57:202
177342140,0sleep30-21swapper/322:43:223
151942140,0sleep30-21swapper/319:35:123
101472140,0sleep210154-21gltestperf20:35:122
29589997,1cyclictest12-21ksoftirqd/000:00:000
29709980,7cyclictest15876-21ntp_states00:00:183
29679987,1cyclictest28-21ksoftirqd/200:05:012
29679983,3cyclictest674-21lldpd23:12:192
29629983,3cyclictest26156-21munin-run20:00:011
29589986,1cyclictest12-21ksoftirqd/000:10:000
29589986,1cyclictest121ksoftirqd/020:40:010
29589982,1cyclictest141rcu_preempt19:30:120
5589270,0sleep30-21swapper/321:56:113
29709974,2cyclictest22590-21xargs23:05:223
29709973,3cyclictest29142-11brltty23:30:123
29709973,3cyclictest275-21systemd-journal23:29:473
29709972,2cyclictest275-21systemd-journal00:07:563
29709970,6cyclictest20610-21cron23:05:013
29679975,1cyclictest28-21ksoftirqd/220:20:012
29679973,3cyclictest504-21dbus-daemon00:20:012
29679973,3cyclictest275-21systemd-journal20:12:122
29629973,3cyclictest658-21snmpd21:30:121
29629973,3cyclictest275-21systemd-journal23:56:291
29629973,3cyclictest275-21systemd-journal20:26:211
29629973,3cyclictest275-21systemd-journal19:20:241
29629971,5cyclictest18790-21munin-run22:05:011
29589976,1cyclictest12-21ksoftirqd/023:55:000
29589976,1cyclictest121ksoftirqd/023:20:010
29589974,3cyclictest16885-21cron19:40:010
29589974,2cyclictest275-21systemd-journal19:56:460
29589973,3cyclictest658-21snmpd21:10:080
29589973,3cyclictest275-21systemd-journal22:42:390
29589973,1cyclictest141rcu_preempt19:15:010
29589972,3cyclictest275-21systemd-journal22:45:000
29589970,4cyclictest4047-21ls22:55:000
29589970,1cyclictest0-21swapper/023:28:200
29589970,1cyclictest0-21swapper/023:20:290
29589970,1cyclictest0-21swapper/022:29:560
18008270,0sleep10-21swapper/123:02:581
31805260,0sleep00-21swapper/023:10:550
29709965,1cyclictest24912-21diskmemload00:15:123
29709964,2cyclictest501-21in:imuxsock21:30:003
29709963,2cyclictest7096-21sh21:18:283
29709963,2cyclictest658-21snmpd23:40:543
29709963,2cyclictest658-21snmpd22:29:583
29709963,2cyclictest600-21rm23:51:003
29709963,2cyclictest4692-21sh21:35:523
29709963,2cyclictest31360-21sh21:13:353
29709963,2cyclictest28314-21memory22:10:173
29709963,2cyclictest275-21systemd-journal20:43:273
29709963,2cyclictest275-21systemd-journal00:10:143
29709963,2cyclictest275-21systemd-journal00:10:143
29709963,2cyclictest25833-21ssh23:46:463
29709963,2cyclictest22170-21sh22:06:173
29709963,2cyclictest21396-21sshd19:47:043
29709963,2cyclictest20914-21ssh00:22:233
29709963,2cyclictest15615-21sh21:42:543
29709962,3cyclictest658-21snmpd23:18:423
29709962,3cyclictest658-21snmpd22:02:053
29709962,3cyclictest658-21snmpd21:51:203
29709962,3cyclictest658-21snmpd20:31:143
29709962,3cyclictest658-21snmpd20:18:173
29709962,3cyclictest658-21snmpd20:05:043
29709962,3cyclictest658-21snmpd20:02:483
29709962,3cyclictest6107-21expr23:35:133
29709962,3cyclictest4706-21memory22:35:153
29709962,3cyclictest275-21systemd-journal20:27:123
29709962,3cyclictest1-21systemd21:30:053
29709962,2cyclictest674-21lldpd22:22:453
29709962,2cyclictest674-21lldpd22:22:453
29709962,1cyclictest0-21swapper/322:52:053
29709960,6cyclictest0-21swapper/300:38:463
29709960,6cyclictest0-21swapper/300:25:193
29709960,5cyclictest5597-21sed19:15:013
29709960,3cyclictest29358-21ssh23:10:123
29709960,2cyclictest14013-21/usr/sbin/munin20:45:183
29709960,0cyclictest0-21swapper/321:20:193
29679966,0cyclictest0-21swapper/222:31:102
29679966,0cyclictest0-21swapper/222:02:472
29679966,0cyclictest0-21swapper/221:46:262
29679966,0cyclictest0-21swapper/219:10:242
29679965,1cyclictest17283-21ssh23:41:322
29679963,2cyclictest658-21snmpd21:26:442
29679963,2cyclictest5810-21grep23:35:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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