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2026-04-25 - 07:10
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Sat Apr 25, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
71749912156,58cyclictest277-21dbus-daemon23:57:300
7174991213,34cyclictest5749-21/usr/sbin/munin00:23:050
7174991113,50cyclictest3280-21ssh22:30:490
7174991113,50cyclictest3280-21ssh22:30:490
7174991113,48cyclictest1944-21/usr/sbin/munin23:22:520
7174991113,48cyclictest1944-21/usr/sbin/munin23:22:520
7174991062,41cyclictest12928-21latency_hist22:47:310
71749910451,12cyclictest19676-21snmpd23:13:060
7174991024,29cyclictest4855-21ntp_states22:33:000
71809910178,15cyclictest2374-21systemd-journal19:27:301
71749910139,10cyclictest0-21swapper/019:47:310
71749910139,10cyclictest0-21swapper/019:47:310
7174991003,31cyclictest15665-21systemctl21:03:020
1622621000,5sleep30-21swapper/321:57:563
717499993,43cyclictest25048-21cut19:52:540
717499983,44cyclictest7287-21ntp_kernel_pll_21:42:590
717499983,44cyclictest7287-21ntp_kernel_pll_21:42:590
717499983,33cyclictest20022-21switchtime22:58:040
717499973,29cyclictest15180-21sshd20:26:570
7180999654,35cyclictest11049-21gpgv19:12:331
7180999652,37cyclictest25001-21sh23:07:321
718399932,44cyclictest39-21ksoftirqd/221:32:442
658029312,54sleep26662-21unixbench_singl18:58:172
7180999039,42cyclictest32711-21latency_hist20:17:331
718099903,73cyclictest19902-21sh23:52:331
718099903,73cyclictest19902-21sh23:52:331
7180998946,35cyclictest0-21swapper/121:37:301
718099894,39cyclictest6110-21grep20:33:051
718099894,39cyclictest6110-21grep20:33:051
718099892,30cyclictest5749-21/usr/sbin/munin00:22:561
7180998741,39cyclictest0-21swapper/119:07:321
7180998740,38cyclictest0-21swapper/100:12:411
718099872,54cyclictest29135-21apt-get20:06:121
718099872,28cyclictest8325-21latency_hist20:42:321
718099872,28cyclictest8325-21latency_hist20:42:321
7183998669,12cyclictest7168-21cyclictest19:28:032
7183998659,20cyclictest25841-21sh00:02:312
7180998661,17cyclictest0-21swapper/119:34:191
7180998661,17cyclictest0-21swapper/119:34:191
718099864,39cyclictest22414-21users19:43:071
718099864,39cyclictest22414-21users19:43:071
718099863,24cyclictest26093-21/usr/sbin/munin00:02:451
7180998631,46cyclictest0-21swapper/119:28:011
7180998625,47cyclictest0-21swapper/100:20:181
718099853,31cyclictest15892-21latency_hist22:52:581
718099852,28cyclictest10372-21cstates22:42:471
7180998519,57cyclictest18678-21/usr/sbin/munin22:02:451
7180998519,57cyclictest18678-21/usr/sbin/munin22:02:451
7183998440,12cyclictest181rcu_preempt23:08:042
7183998440,12cyclictest181rcu_preempt23:08:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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