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2025-12-11 - 05:19
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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 11, 2025 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2656625850,8sleep30-21swapper/319:08:123
2509121539,25sleep00-21swapper/019:03:290
26548991233,81cyclictest1497-21apt-get21:08:450
26548991182,27cyclictest27584-21/usr/sbin/munin23:43:400
26548991179,75cyclictest0-21swapper/022:38:110
265489911436,64cyclictest0-21swapper/000:23:200
26548991142,25cyclictest11566-21ssh00:13:060
25286211311,71sleep225292-21/usr/sbin/munin19:04:042
26548991123,28cyclictest10763-21latency_hist19:58:110
26548991112,25cyclictest4687-21ssh23:59:490
26548991112,24cyclictest20875-21rm21:41:010
26548991103,68cyclictest22120-21grep23:33:450
26548991103,68cyclictest22120-21grep23:33:450
26548991092,27cyclictest21505-21ssh00:29:340
26548991092,27cyclictest21505-21ssh00:29:340
26548991087,66cyclictest0-21swapper/023:55:510
26548991082,64cyclictest6226-21tune2fs19:43:320
26548991082,27cyclictest13391-21cat22:23:430
26548991082,27cyclictest13391-21cat22:23:430
26548991082,24cyclictest15914-21runrttasks22:28:580
265639910746,10cyclictest0-21swapper/200:08:192
26548991072,27cyclictest32099-21ssh22:56:270
26548991072,27cyclictest32099-21ssh22:56:270
26548991072,23cyclictest13304-21ssh00:14:470
26548991072,23cyclictest13304-21ssh00:14:470
265489910717,57cyclictest0-21swapper/023:38:370
265639910652,8cyclictest0-21swapper/200:03:102
265489910627,52cyclictest0-21swapper/023:48:450
265489910627,52cyclictest0-21swapper/023:48:450
26548991062,22cyclictest10519-21rm23:14:230
26548991052,88cyclictest22964-21sshd00:33:250
26548991052,26cyclictest17450-21cstates20:18:250
26548991052,26cyclictest17450-21cstates20:18:250
26548991052,24cyclictest394-21ssh22:02:190
26548991052,24cyclictest15957-21ssh00:19:130
265489910517,52cyclictest0-21swapper/022:03:380
265639910349,12cyclictest22924-21sh00:33:202
265489910368,24cyclictest25354-21latency_hist20:43:110
26548991032,88cyclictest4296-21ssh21:13:240
26548991032,67cyclictest18760-21grep23:28:360
26548991032,27cyclictest5494-21ssh22:10:160
26548991032,27cyclictest5494-21ssh22:10:160
26548991032,25cyclictest25760-21ssh22:44:340
265489910231,62cyclictest0-21swapper/021:08:120
26548991022,28cyclictest27657-21/usr/sbin/munin21:53:400
26548991022,28cyclictest27657-21/usr/sbin/munin21:53:400
265639910143,10cyclictest0-21swapper/221:13:312
26548991014,7cyclictest0-21swapper/021:33:240
26548991012,6cyclictest0-21swapper/022:38:220
26548991012,6cyclictest0-21swapper/022:38:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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