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2025-05-12 - 23:13
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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
Characteristics of the 50 highest latencies:
System rackdslot0.osadl.org (updated Mon May 12, 2025 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2620899257,15cyclictest0-21swapper/009:55:530
2621999245,11cyclictest0-21swapper/212:26:102
2621999230,5cyclictest0-21swapper/210:55:132
2621999230,5cyclictest0-21swapper/208:18:182
26219992214,3cyclictest0-21swapper/210:15:162
2621999210,5cyclictest0-21swapper/207:20:212
2621499203,2cyclictest6731-21idleruntime-cro12:00:001
2621999194,1cyclictest0-21swapper/210:25:012
2621999193,9cyclictest29802-21python311:45:002
2621999193,15cyclictest2879-21http_loadtime08:20:182
26219991917,1cyclictest0-21swapper/211:55:152
26214991919,0cyclictest0-21swapper/108:24:141
2621499190,16cyclictest14081-21nfsd409:35:211
2621499190,0cyclictest0-21swapper/112:36:531
26208991916,2cyclictest20466-21nfsd408:50:190
26219991816,1cyclictest0-21swapper/208:55:012
26219991814,3cyclictest4911-21grep07:25:202
26219991814,3cyclictest456-21perf11:50:002
2621999180,17cyclictest21320-21latency_hist11:30:012
2621999180,17cyclictest1979-21cat11:50:142
2621999180,16cyclictest16876-21nvmesmart_nvme012:15:212
2621999180,16cyclictest14461-21nfsd411:15:162
2621499182,1cyclictest0-21swapper/109:14:001
2621499182,10cyclictest23350-21munin-run12:30:011
26214991817,0cyclictest0-21swapper/109:00:231
26214991816,1cyclictest9436-21nfsd408:30:211
26214991814,1cyclictest0-21swapper/111:25:271
2621499181,2cyclictest15184-21vmstat11:15:181
2621499181,2cyclictest14862-21chrt12:12:411
2621499180,16cyclictest29397-21apt-config07:15:091
2620899182,1cyclictest0-21swapper/008:47:070
2620899182,15cyclictest0-21swapper/011:40:010
26208991816,1cyclictest23141-21kworker/0:109:39:000
26208991815,2cyclictest5379-21apache208:25:020
26208991814,3cyclictest0-21swapper/012:27:090
2620899181,16cyclictest24340-21cut12:30:150
2620899180,17cyclictest823-21systemd-network09:27:510
2620899180,17cyclictest0-21swapper/007:30:230
2620899180,17cyclictest0-21swapper/007:30:230
26219991715,1cyclictest0-21swapper/208:05:172
26219991715,1cyclictest0-21swapper/207:40:222
26219991714,2cyclictest893-21systemd-logind09:19:072
26219991714,2cyclictest4632-21/usr/sbin/munin09:20:142
26219991714,2cyclictest3787-21latency10:35:142
26219991714,2cyclictest3787-21latency10:35:142
26219991714,2cyclictest31010-21nfsd407:15:192
26219991714,2cyclictest26929-21munin-plugin-st11:40:002
26219991714,2cyclictest25629-21cut09:55:222
26219991714,2cyclictest24128-21apache_accesses12:30:102
26219991714,2cyclictest21299-21tr09:50:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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