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2025-07-12 - 13:03
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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 rack5slot3.osadl.org (updated Sat Jul 12, 2025 00:50:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2466928541,39sleep50-21swapper/519:07:055
2467128249,29sleep70-21swapper/719:07:087
2485928047,29sleep60-21swapper/619:09:486
2480028037,38sleep30-21swapper/319:08:573
2347927846,26sleep10-21swapper/119:05:171
2460827743,30sleep20-21swapper/219:06:152
2472927643,29sleep00-21swapper/019:07:580
2481927440,29sleep40-21swapper/419:09:144
88802530,0sleep30-21swapper/321:45:173
290962500,0sleep00-21swapper/000:36:310
148682500,0sleep00-21swapper/023:09:130
148682500,0sleep00-21swapper/023:09:130
7072470,0sleep60-21swapper/620:15:126
25305994646,0cyclictest0-21swapper/119:10:101
326622450,0sleep50-21swapper/519:20:105
272812450,0sleep30-21swapper/322:59:233
205622440,0sleep30-21swapper/300:32:343
25311993838,0cyclictest0-21swapper/722:20:177
25311993535,0cyclictest0-21swapper/719:10:117
25309992828,0cyclictest0-21swapper/523:54:425
25308992825,3cyclictest0-21swapper/422:29:534
25308992726,0cyclictest69450irq/124-eth023:26:364
25305992626,0cyclictest0-21swapper/123:33:111
2531199250,25cyclictest0-21swapper/722:52:007
25308992221,0cyclictest69450irq/124-eth022:51:244
2530699220,1cyclictest0-21swapper/222:20:212
25310992121,0cyclictest32515-1kworker/u17:022:41:146
25310992114,0cyclictest15625-21ls22:20:216
25308992121,0cyclictest69450irq/124-eth023:59:034
25311992020,0cyclictest0-21swapper/723:09:567
25311992020,0cyclictest0-21swapper/723:09:567
25308992020,0cyclictest69450irq/124-eth023:15:024
25308992019,1cyclictest481ktimersoftd/422:46:594
25306992010,5cyclictest0-21swapper/219:10:112
25311991919,0cyclictest0-21swapper/700:05:057
25308991918,1cyclictest0-21swapper/400:06:344
25306991912,6cyclictest734-21gmain22:03:322
25306991910,9cyclictest0-21swapper/200:25:162
25304991910,9cyclictest0-21swapper/022:56:010
25308991814,0cyclictest69450irq/124-eth022:14:204
25305991815,3cyclictest16136-21nscd23:38:511
25305991815,3cyclictest16136-21nscd23:38:501
2608121710,1sleep30-21swapper/321:54:303
25311991710,6cyclictest28305-21munin-node23:39:307
25311991710,6cyclictest28305-21munin-node23:39:307
25310991710,5cyclictest0-21swapper/622:35:136
25310991710,0cyclictest0-21swapper/600:21:296
25308991716,1cyclictest641-21nscd00:29:274
25308991715,1cyclictest14805-21/usr/sbin/munin00:30:124
25307991716,1cyclictest1559-21snmpd23:09:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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