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2026-04-03 - 20:01
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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 Fri Apr 03, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70459912641,50cyclictest22909-21ssh11:59:070
70459912641,50cyclictest22909-21ssh11:59:070
7054991173,89cyclictest6310-21apt-get09:44:122
7054991173,89cyclictest6310-21apt-get09:44:122
690421119,73sleep06935-21munin-run07:03:560
690421119,73sleep06935-21munin-run07:03:560
70549910719,37cyclictest18990-21seq07:39:112
70549910719,37cyclictest18990-21seq07:39:112
1946221000,20sleep014209-21diskmemload10:59:110
7054999959,34cyclictest18029-21ssh10:03:562
7051999975,18cyclictest10455-21kworker/u19:2-ext4-rsv-conversion12:24:131
705199956,45cyclictest27823-21journal-offline10:19:251
705199956,45cyclictest27823-21journal-offline10:19:251
7051999555,9cyclictest6243-21runrttasks11:30:131
7051999555,9cyclictest6243-21runrttasks11:30:131
7045999567,19cyclictest11459-21latency_hist12:33:570
7045999557,28cyclictest17397-21ssh09:08:590
7045999524,45cyclictest2952-21systemd-journal11:32:000
7045999524,45cyclictest2952-21systemd-journal11:32:000
7045999464,19cyclictest8570-21latency_hist12:28:580
7045999423,29cyclictest19904-21apt-get11:54:060
7051999250,34cyclictest30309-21kworker/u18:3+nfsiod12:23:361
7054999173,10cyclictest2952-21systemd-journal11:08:552
705499904,32cyclictest22280-21latency_hist07:48:582
7054999038,45cyclictest297-21systemd-logind12:23:562
61322907,57sleep16139-21awk06:59:371
61322907,57sleep16139-21awk06:59:371
705499894,31cyclictest27739-21/usr/sbin/munin10:20:202
705499894,31cyclictest27739-21/usr/sbin/munin10:20:202
705499894,29cyclictest352-21runrttasks12:04:092
7054998937,43cyclictest0-21swapper/211:24:322
705499893,30cyclictest1017-21modprobe08:23:562
7054998923,11cyclictest0-21swapper/212:29:112
705499892,29cyclictest13406-21cpuspeed10:49:112
7045998961,19cyclictest9214-21apt-key08:48:580
7045998961,19cyclictest9214-21apt-key08:48:580
705499883,32cyclictest22584-21latency_hist11:58:592
7054998827,10cyclictest0-21swapper/209:39:132
705499882,36cyclictest9545-21fschecks_time07:09:202
705499882,35cyclictest5895-21grep11:29:322
705499882,35cyclictest5895-21grep11:29:322
705499882,34cyclictest21282-21/usr/sbin/munin10:09:212
7054998820,22cyclictest28522-21expr11:14:122
7054998814,27cyclictest30479-21sort09:29:322
705499873,34cyclictest16873-21/usr/sbin/munin11:49:332
705499873,33cyclictest4120-21latency_hist10:33:582
705499873,33cyclictest11045-21find10:44:282
705499873,31cyclictest27984-21rm11:13:502
705499872,33cyclictest19388-21wc10:59:112
705199873,57cyclictest6382-21ssh09:44:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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