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2026-06-05 - 12:50
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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 rackbslot7.osadl.org (updated Fri Jun 05, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6487991103,65cyclictest15069-21ssh21:54:571
584621109,65sleep25914-21sed18:55:292
584621109,65sleep25914-21sed18:55:292
6495999717,23cyclictest6195-21sh23:28:052
107662970,7sleep214071-21diskmemload23:35:572
107662970,7sleep214071-21diskmemload23:35:572
648399952,61cyclictest18723-21apt-get22:55:010
648399952,61cyclictest18723-21apt-get22:55:010
62672946,16sleep10-21swapper/118:58:591
62672946,16sleep10-21swapper/118:58:591
6487999348,37cyclictest277-21dbus-daemon00:04:451
6487999348,37cyclictest277-21dbus-daemon00:04:451
648799933,33cyclictest10611-21unixbench_multi22:40:211
6487999252,35cyclictest6472-21cyclictest00:07:451
648799924,35cyclictest618-21/usr/sbin/munin22:25:171
6487999241,44cyclictest26196-21runrttasks23:06:371
648799923,32cyclictest22565-21tune2fs19:45:051
648799914,33cyclictest30586-21/usr/sbin/munin23:15:111
648799914,32cyclictest19075-21runrttasks22:01:031
648799913,35cyclictest30633-21fschecks_time20:10:051
649599908,64cyclictest18763-21ssh22:55:012
649599908,64cyclictest18763-21ssh22:55:012
648799904,35cyclictest3033-21fschecks_time20:25:061
648799904,35cyclictest29064-21latency_hist21:24:481
648799902,36cyclictest29629-21grep21:25:061
648799902,34cyclictest352-21runrttasks22:21:421
648799902,33cyclictest20477-21latency_hist19:39:471
648799894,35cyclictest8571-21tune2fs19:04:521
648799894,35cyclictest352-21runrttasks22:14:491
648799894,32cyclictest352-21runrttasks23:45:441
648799894,32cyclictest15086-21processes21:00:171
648799894,32cyclictest15086-21processes21:00:171
648799893,37cyclictest13662-21grep20:55:201
648799893,36cyclictest26904-21latency_hist19:59:491
648799893,35cyclictest16347-21awk19:26:141
648799893,32cyclictest8273-21latency_hist19:04:471
648799884,34cyclictest4784-21processes23:25:161
648799884,32cyclictest3883-21fschecks_count22:30:051
648799884,31cyclictest21945-21ssh23:00:051
648799884,31cyclictest10803-21latency_hist20:49:471
6487998839,42cyclictest0-21swapper/122:05:161
648799883,36cyclictest352-21runrttasks22:14:371
648799883,36cyclictest352-21runrttasks22:14:371
648799883,33cyclictest17369-21/usr/sbin/munin21:05:101
648799883,31cyclictest17460-21sshd19:15:071
648799883,31cyclictest17460-21sshd19:15:071
6487998831,44cyclictest0-21swapper/119:34:471
6487998831,44cyclictest0-21swapper/119:34:471
6487998828,50cyclictest11908-21apt-key21:49:481
6487998828,50cyclictest11908-21apt-key21:49:481
648799882,35cyclictest1416-21fschecks_time20:20:061
648799882,35cyclictest1416-21fschecks_time20:20:061
648799882,33cyclictest22531-21cut23:55:081
6483998864,16cyclictest17450-21fschecks_count19:30:060
6483998864,16cyclictest17450-21fschecks_count19:30:060
6495998758,21cyclictest29957-21latency_hist22:19:462
648799875,31cyclictest6206-21fschecks_count20:35:051
648799873,33cyclictest21550-21grep19:41:201
648799873,32cyclictest23404-21/usr/sbin/munin21:15:061
648799873,32cyclictest23404-21/usr/sbin/munin21:15:061
648799873,31cyclictest15309-21readlink19:24:461
6487998728,53cyclictest0-21swapper/120:50:501
6487998728,53cyclictest0-21swapper/120:50:501
6483998747,31cyclictest6472-21cyclictest21:19:480
6483998747,31cyclictest6472-21cyclictest21:19:480
648799864,33cyclictest12837-21fschecks_time22:45:071
648799864,32cyclictest8205-21proc_pri20:40:161
648799864,31cyclictest14909-21latency_hist21:54:471
648799864,30cyclictest32373-21/usr/sbin/munin21:30:081
648799864,30cyclictest28108-21unixbench_singl20:00:191
648799863,35cyclictest19657-21grep22:56:081
648799863,35cyclictest19657-21grep22:56:081
648799863,35cyclictest13271-21/usr/sbin/munin23:40:081
648799863,34cyclictest6589-21/usr/sbin/munin22:35:131
648799863,34cyclictest6589-21/usr/sbin/munin22:35:131
648799863,33cyclictest5894-21/usr/sbin/munin21:40:051
648799863,33cyclictest5270-21timerwakeupswit20:30:191
648799863,33cyclictest3401-21cat21:35:111
648799863,33cyclictest3401-21cat21:35:111
648799862,35cyclictest9554-21ssh23:34:081
648799862,35cyclictest9554-21ssh23:34:081
648799862,35cyclictest1582-21latency23:20:091
648799862,33cyclictest12043-21latency_hist19:14:471
6483998639,38cyclictest28497-21cron20:04:440
648799854,33cyclictest29008-21fschecks_time20:05:051
648799853,36cyclictest30301-21latency_hist23:14:461
648799853,36cyclictest30301-21latency_hist23:14:461
648799853,32cyclictest17460-21sshd00:10:031
648799853,32cyclictest17460-21sshd00:10:031
648799853,30cyclictest11439-21sendmail_mailqu23:36:251
648799853,30cyclictest11439-21sendmail_mailqu23:36:251
6487998525,9cyclictest0-21swapper/100:15:031
648799852,38cyclictest7449-21latency_hist00:24:471
6483998544,34cyclictest6264-21rm23:28:170
6495998465,9cyclictest0-21swapper/222:24:462
6495998417,26cyclictest11164-21runrttasks20:50:362
6495998417,26cyclictest11164-21runrttasks20:50:362
6495998412,27cyclictest8472-21munin-node19:04:492
648799844,28cyclictest19215-21/usr/sbin/munin23:50:041
648799843,33cyclictest32184-21fschecks_count20:15:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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