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2025-11-17 - 07:39
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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 rack4slot6.osadl.org (updated Mon Nov 17, 2025 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32757521140,110pltrace0-21swapper/319:05:233
3275752940,85pltrace0-21swapper/619:05:176
314952890,81pltrace0-21swapper/719:09:097
2468552770,2pltrace0-21swapper/620:43:006
298627561,10sleep50-21swapper/519:05:595
3275752740,65pltrace0-21swapper/119:07:241
302126942,7sleep40-21swapper/419:06:304
312626551,10sleep20-21swapper/219:07:562
295126045,11sleep00-21swapper/019:05:300
601252520,1pltrace6014-21tee19:12:586
2916152340,0pltrace0-21swapper/719:55:197
1910852330,1pltrace0-21swapper/520:33:005
350299240,23cyclictest0-21swapper/221:09:252
349999230,22cyclictest0-21swapper/119:10:301
1297352220,16pltrace0-21swapper/622:19:156
682352190,2pltrace0-21swapper/700:05:227
1074452190,2pltrace12249-21http_loadtime20:20:167
3525991812,5cyclictest0-21swapper/721:43:507
352099186,8cyclictest0-21swapper/600:20:206
352099180,2cyclictest0-21swapper/622:35:186
3516991815,2cyclictest1132-21snmpd19:45:115
3511991812,5cyclictest0-21swapper/423:50:474
3494991812,5cyclictest0-21swapper/020:05:350
347052180,12pltrace3541-21sshd21:03:484
1576252180,11pltrace18482-21sshd22:27:227
516552170,9pltrace54-21ksoftirqd/420:08:174
352099170,7cyclictest0-21swapper/619:33:286
3516991714,2cyclictest23141-21sed00:30:275
3516991711,5cyclictest0-21swapper/523:38:535
351699171,15cyclictest0-21swapper/521:00:015
351199170,2cyclictest0-21swapper/421:11:194
3507991711,5cyclictest0-21swapper/322:35:463
350799171,8cyclictest0-21swapper/319:45:073
1965352170,0pltrace0-21swapper/723:29:467
1910852170,12pltrace54-21ksoftirqd/420:35:164
1855152170,0pltrace0-21swapper/722:32:527
1521952170,1pltrace15223-21pltrace-run19:28:001
1353452170,3pltrace0-21swapper/520:27:545
352599161,4cyclictest0-21swapper/719:47:507
352599161,4cyclictest0-21swapper/719:18:107
352599161,14cyclictest0-21swapper/721:46:597
352599160,15cyclictest0-21swapper/721:00:107
352599160,15cyclictest0-21swapper/700:20:277
352099161,8cyclictest0-21swapper/621:45:446
352099160,8cyclictest0-21swapper/621:02:426
352099160,15cyclictest0-21swapper/623:15:196
352099160,15cyclictest0-21swapper/620:25:036
3516991613,2cyclictest29536-21processes20:50:225
3516991613,2cyclictest27886-21cstates22:45:135
3516991613,2cyclictest1697-21lldpd19:39:105
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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