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2025-11-15 - 14:08
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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
Characteristics of the 50 highest latencies:
System rackeslot2.osadl.org (updated Sat Nov 15, 2025 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
54344621000,2sleep30-21swapper/300:28:263
50164121000,1sleep10-21swapper/100:05:361
3498712810,2sleep30-21swapper/322:35:443
4875099261,2cyclictest63075-21apt19:20:001
48749992314,5cyclictest1635-21dbus-daemon23:30:020
48749992211,5cyclictest0-21swapper/000:25:430
48750992116,4cyclictest117698-21cron20:05:001
48750992114,3cyclictest249978-21/usr/sbin/munin21:40:481
48749992118,2cyclictest475008-21latency_hist23:50:010
48749992117,2cyclictest8734-21sendmail-mta21:55:020
48749992117,2cyclictest55154-21cut19:15:020
48749992110,6cyclictest0-21swapper/023:25:010
48750992017,2cyclictest241030-21/usr/sbin/munin21:35:021
48750992017,2cyclictest1635-21dbus-daemon21:25:011
48750992017,2cyclictest1-21systemd22:00:011
48750992017,2cyclictest0-21swapper/122:15:011
48750992013,3cyclictest480616-21ptp4l23:50:451
4874999208,7cyclictest0-21swapper/022:45:350
48749992012,4cyclictest1652-1atopacctd22:01:000
48751991916,1cyclictest0-21swapper/221:45:382
48751991916,1cyclictest0-21swapper/221:40:002
48751991916,1cyclictest0-21swapper/221:30:512
4875099199,3cyclictest332023-21kthreadcore22:25:441
48750991916,2cyclictest562043-21latency_hist00:40:021
48750991916,2cyclictest344686-21systemd-run22:35:011
48750991916,2cyclictest223671-21kworker/u16:0-events_power_efficient22:20:011
48750991914,3cyclictest260-21systemd-journal23:59:551
4874999198,6cyclictest0-21swapper/021:15:010
4874999194,2cyclictest170550irq/121-eno100:10:000
48749991911,4cyclictest294604-21kthreadcore22:05:430
48749991910,5cyclictest275960-21acpi21:55:340
302487291190,2phc2sys0-21swapper/321:12:423
835298180,2rtkit-daemon0-21swapper/021:35:090
48751991816,1cyclictest0-21swapper/223:00:012
48751991815,1cyclictest0-21swapper/222:15:452
4875099189,4cyclictest0-21swapper/100:25:011
48750991815,2cyclictest431265-21cut23:25:011
48750991815,2cyclictest379212-21cut22:55:011
48750991815,2cyclictest1635-21dbus-daemon21:40:011
48750991815,2cyclictest148340-21apt-key20:30:011
48750991811,2cyclictest268784-21kthreadcore21:50:421
48749991815,2cyclictest318808-21/usr/sbin/munin22:20:010
48749991815,2cyclictest214521-21/usr/sbin/munin21:20:010
48749991815,2cyclictest1700-21systemd-logind22:40:020
48749991810,2cyclictest0-21swapper/000:10:360
4874999180,4cyclictest491rcuog/222:28:480
302487291182,3phc2sys0-21swapper/321:39:473
302487291181,3phc2sys0-21swapper/321:00:363
302487291180,3phc2sys0-21swapper/321:45:153
302487291180,2phc2sys0-21swapper/321:41:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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