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2026-04-29 - 21:28
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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 Wed Apr 29, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27536216613,106sleep027569-21proc_pri06:57:540
28371215112,105sleep128375-21latency_hist07:02:151
28454991273,78cyclictest0-21swapper/009:32:270
28454991272,78cyclictest27734-21apt-get08:37:220
28454991253,83cyclictest1319-21rm09:52:290
28454991253,83cyclictest1319-21rm09:52:290
284549911625,52cyclictest0-21swapper/011:07:140
284549911534,60cyclictest0-21swapper/011:12:440
284549911534,60cyclictest0-21swapper/011:12:440
28454991143,68cyclictest0-21swapper/008:37:130
28454991143,68cyclictest0-21swapper/008:37:130
28454991142,71cyclictest2952-1kworker/0:0H+mmc_complete09:32:150
284549911417,76cyclictest0-21swapper/012:07:450
28454991133,77cyclictest7148-21modprobe11:52:110
2824721136,16sleep20-21swapper/207:01:312
28454991118,62cyclictest0-21swapper/008:02:130
28454991118,62cyclictest0-21swapper/008:02:130
28454991113,62cyclictest0-21swapper/007:52:220
284549911132,64cyclictest0-21swapper/007:32:140
284549911116,71cyclictest25224-21switchtime08:27:450
284549911116,71cyclictest25224-21switchtime08:27:450
28454991086,93cyclictest29586-21apt-get08:43:100
28454991084,74cyclictest4204-21munin-run11:47:100
28454991083,98cyclictest13297-21apt-get11:07:230
28454991083,98cyclictest13297-21apt-get11:07:230
28454991076,85cyclictest21664-21grep10:27:140
28454991076,85cyclictest21664-21grep10:27:140
28454991073,66cyclictest32530-21idleruntime-cro08:52:120
28454991073,66cyclictest32530-21idleruntime-cro08:52:120
28454991073,64cyclictest0-21swapper/008:17:130
28454991072,70cyclictest4990-21ntp_kernel_err10:52:380
284549910720,49cyclictest0-21swapper/012:27:380
284549910720,49cyclictest0-21swapper/012:27:380
284709910672,10cyclictest181rcu_preempt11:42:062
28454991063,80cyclictest6785-21apt-get07:32:300
28454991063,66cyclictest6909-21apt-get09:07:290
284549910636,63cyclictest0-21swapper/012:07:110
284549910636,63cyclictest0-21swapper/012:07:110
28454991062,64cyclictest17755-21modprobe08:07:110
28454991062,64cyclictest17755-21modprobe08:07:110
28454991053,58cyclictest0-21swapper/009:05:230
284549910531,47cyclictest0-21swapper/010:02:490
284549910531,47cyclictest0-21swapper/010:02:490
28454991033,93cyclictest0-21swapper/012:22:230
28454991033,64cyclictest16851-21ssh10:17:470
28454991033,64cyclictest0-21swapper/011:37:160
28454991033,58cyclictest27510-21latency_hist09:42:140
284549910249,47cyclictest3312-21diskmemload10:47:450
284549910249,47cyclictest3312-21diskmemload10:47:450
28454991024,61cyclictest0-21swapper/007:17:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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