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2025-12-04 - 09:00
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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 Thu Dec 04, 2025 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32039213414,82sleep032069-21ntpq19:04:120
576991303,115cyclictest7284-21munin-node23:53:460
576991182,25cyclictest26017-21/usr/sbin/munin20:23:500
576991142,62cyclictest5335-21/usr/sbin/munin21:59:000
576991142,27cyclictest27514-21irqstats00:29:060
5769911328,55cyclictest0-21swapper/019:13:520
576991112,26cyclictest26406-21rm22:34:290
576991112,25cyclictest6294-21seq22:56:170
576991102,24cyclictest25861-21ssh00:25:460
576991102,24cyclictest25861-21ssh00:25:460
576991092,25cyclictest30399-21rm21:46:280
576991092,22cyclictest26042-21/usr/sbin/munin21:39:010
5769910737,63cyclictest0-21swapper/022:59:000
5769910737,63cyclictest0-21swapper/022:59:000
576991072,25cyclictest10069-21sh21:11:360
576991072,25cyclictest10069-21sh21:11:360
5769910711,57cyclictest0-21swapper/020:49:000
576991063,7cyclictest0-21swapper/021:53:480
576991062,28cyclictest19013-21taskset20:03:190
5769910611,68cyclictest22278-21seq22:28:450
5769910611,68cyclictest22278-21seq22:28:450
5829910553,12cyclictest565-21cyclictest19:19:131
576991052,6cyclictest0-21swapper/022:38:460
576991052,6cyclictest0-21swapper/022:38:460
576991052,69cyclictest0-21swapper/023:39:130
576991052,24cyclictest19428-21rm21:28:250
586991043,78cyclictest3041-21apt-get19:13:502
576991042,23cyclictest5984-21rm23:51:190
576991032,22cyclictest9550-21ssh22:06:060
576991032,22cyclictest9550-21ssh22:06:060
5769910311,57cyclictest30448-21kworker/u17:4+nfsiod00:04:230
5769910311,57cyclictest30448-21kworker/u17:4+nfsiod00:04:230
5769910250,46cyclictest4277-21latency_hist22:53:380
5769910250,46cyclictest4277-21latency_hist22:53:380
576991022,82cyclictest14020-21apt-get21:18:490
576991022,24cyclictest20415-21taskset20:05:410
576991022,22cyclictest24003-21ssh23:26:520
5769910142,52cyclictest565-21cyclictest21:51:320
5769910127,51cyclictest0-21swapper/000:16:260
5769910127,51cyclictest0-21swapper/000:16:260
576991012,24cyclictest12842-21taskset23:08:220
5769910065,27cyclictest25904-21latency_hist20:23:390
576991002,25cyclictest14954-21rm22:15:060
576991002,24cyclictest21916-21sh22:28:250
57699994,83cyclictest2410-21latency_hist19:13:390
57699992,68cyclictest12517-21ssh00:03:050
57699992,68cyclictest12517-21ssh00:03:050
57699992,26cyclictest27212-21sh23:32:410
57699992,24cyclictest27623-21/usr/sbin/munin20:28:520
57699992,24cyclictest27623-21/usr/sbin/munin20:28:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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