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2026-05-20 - 07:16
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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 rack5slot2.osadl.org (updated Wed May 20, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
165262198182,11sleep30-21swapper/319:06:013
167562187170,12sleep10-21swapper/119:08:591
165832181165,12sleep00-21swapper/019:06:460
165132166146,15sleep20-21swapper/219:05:512
20852450,0sleep00-21swapper/023:42:210
268102440,0sleep20-21swapper/221:15:432
276182160,0sleep1201rcuc/100:10:321
76282120,0sleep00-21swapper/021:22:290
170389980,6cyclictest0-21swapper/323:15:133
170309971,5cyclictest0-21swapper/221:25:112
170219960,5cyclictest0-21swapper/020:20:110
170389955,0cyclictest31135-21kworker/3:122:16:023
170389950,5cyclictest0-21swapper/323:41:543
170389950,5cyclictest0-21swapper/300:22:473
170389950,0cyclictest1016-21ssh22:06:273
170309955,0cyclictest0-21swapper/222:02:232
170309950,5cyclictest0-21swapper/220:50:112
170259951,2cyclictest0-21swapper/121:50:121
170259950,5cyclictest0-21swapper/122:01:101
170259950,5cyclictest0-21swapper/121:41:131
170219953,1cyclictest5098-21latency_hist22:25:010
170219950,4cyclictest8104-21sendmail21:00:000
170219950,4cyclictest19337-21ssh22:00:120
170219950,0cyclictest0-21swapper/000:09:270
25815240,0sleep10-21swapper/121:31:031
170389944,0cyclictest31135-21kworker/3:120:35:153
170389944,0cyclictest31135-21kworker/3:100:30:233
170389941,2cyclictest0-21swapper/323:00:103
170389941,2cyclictest0-21swapper/322:20:123
170389941,2cyclictest0-21swapper/320:30:123
170389941,1cyclictest537-21nscd21:45:593
170389941,1cyclictest0-21swapper/322:10:113
170389941,1cyclictest0-21swapper/321:35:113
170389941,1cyclictest0-21swapper/320:55:103
170389940,4cyclictest331-21apt-get19:40:113
170389940,4cyclictest17577-21taskset20:14:113
170389940,4cyclictest13072-21diskmemload23:20:123
170389940,4cyclictest12492-21ssh22:28:193
170389940,4cyclictest0-21swapper/323:35:113
170389940,4cyclictest0-21swapper/323:14:033
170389940,4cyclictest0-21swapper/322:46:463
170389940,4cyclictest0-21swapper/321:57:343
170389940,4cyclictest0-21swapper/321:32:413
170389940,4cyclictest0-21swapper/321:23:283
170389940,4cyclictest0-21swapper/319:50:013
170389940,3cyclictest8361-21apt-get21:00:103
170389940,3cyclictest802-21snmpd23:30:093
170389940,3cyclictest7253-21cat23:45:143
170389940,3cyclictest26860-21date23:55:003
170389940,3cyclictest26690-21ssh23:06:423
170389940,3cyclictest16396-21rm21:26:343
170389940,3cyclictest14410-21fw_packets21:10:153
170389940,1cyclictest27241-21memory22:35:173
170389940,1cyclictest23753-21sed21:15:013
170389940,0cyclictest0-21swapper/300:35:263
170309944,0cyclictest0-21swapper/200:21:112
170309943,1cyclictest205-21systemd-journal22:25:012
170309943,1cyclictest1021-21grep21:35:132
170309942,1cyclictest551-21ssh00:13:532
170309941,3cyclictest0-21swapper/222:28:322
170309941,2cyclictest0-21swapper/219:25:122
170309941,1cyclictest0-21swapper/221:05:122
170309941,1cyclictest0-21swapper/220:10:132
170309940,4cyclictest0-21swapper/223:40:102
170309940,4cyclictest0-21swapper/223:30:002
170309940,4cyclictest0-21swapper/223:20:012
170309940,4cyclictest0-21swapper/222:55:102
170309940,4cyclictest0-21swapper/222:50:022
170309940,4cyclictest0-21swapper/222:35:122
170309940,4cyclictest0-21swapper/221:55:112
170309940,4cyclictest0-21swapper/221:50:272
170309940,4cyclictest0-21swapper/221:40:122
170309940,4cyclictest0-21swapper/221:00:112
170309940,4cyclictest0-21swapper/219:55:122
170309940,4cyclictest0-21swapper/200:15:102
170309940,4cyclictest0-21swapper/200:05:162
170309940,3cyclictest32741-21cut19:40:012
170309940,3cyclictest32726-21cron00:30:002
170309940,3cyclictest32307-21ssh22:05:462
170309940,3cyclictest2976-21/usr/sbin/munin21:20:152
170309940,3cyclictest22110-21sh23:52:112
170309940,3cyclictest16290-21ssh21:10:442
170309940,3cyclictest16001-21sh23:49:412
170309940,3cyclictest15602-21sh22:30:032
170309940,3cyclictest14018-21/usr/sbin/munin22:45:112
170309940,1cyclictest328-21/usr/sbin/munin19:40:152
170309940,1cyclictest31625-21perl23:25:142
170309940,1cyclictest29458-21ntp_states20:35:162
170309940,1cyclictest22590-21/usr/sbin/munin21:30:152
170309940,1cyclictest20403-21/usr/sbin/munin19:15:132
170309940,1cyclictest17887-21/usr/sbin/munin20:15:192
170309940,1cyclictest17623-21/usr/sbin/munin22:15:152
170309940,1cyclictest11802-21grep00:35:142
170309940,1cyclictest11033-21fschecks_count23:15:152
170309940,0cyclictest0-21swapper/223:12:132
170259944,0cyclictest0-21swapper/122:44:491
170259944,0cyclictest0-21swapper/122:12:221
170259944,0cyclictest0-21swapper/121:23:111
170259942,1cyclictest0-21swapper/123:30:111
170259942,1cyclictest0-21swapper/123:10:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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