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2025-11-22 - 23:21
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Sat Nov 22, 2025 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25599992322,1cyclictest7983-21mii-tool09:25:170
2560099220,18cyclictest0-21swapper/108:28:011
25599992214,4cyclictest0-21swapper/008:05:200
25599992213,0cyclictest0-21swapper/011:15:180
2559999221,18cyclictest31698-21perf10:10:010
2559999220,3cyclictest0-21swapper/008:35:240
2559999220,18cyclictest0-21swapper/011:30:380
25601992120,0cyclictest0-21swapper/210:50:162
25601992118,2cyclictest24653-21latency_hist09:00:012
2559999212,13cyclictest16531-21munin-run07:50:010
25599992121,0cyclictest0-21swapper/011:50:170
2560199204,15cyclictest0-21swapper/211:25:352
2560199204,15cyclictest0-21swapper/210:15:272
25599992018,1cyclictest4526-21H212:26:330
2560199193,15cyclictest0-21swapper/210:34:092
2560199192,2cyclictest23982-21nfsd408:00:192
25601991917,1cyclictest0-21swapper/211:00:142
25601991916,1cyclictest4538-21H212:26:332
2560199190,2cyclictest4538-21H212:26:332
2560199190,1cyclictest0-21swapper/209:40:012
2560199190,18cyclictest0-21swapper/207:29:242
2560099192,16cyclictest26554-21cpuspeed_turbos10:00:151
2560099190,2cyclictest4534-21H212:26:331
2560099190,17cyclictest1929-21ls07:25:011
2559999194,1cyclictest0-21swapper/008:14:390
2559999194,1cyclictest0-21swapper/008:14:390
2559999192,15cyclictest0-21swapper/008:40:160
25599991914,4cyclictest4143-21cat09:20:000
2559999191,15cyclictest0-21swapper/008:05:000
2559999191,15cyclictest0-21swapper/007:25:070
2559999190,16cyclictest19019-21latency_hist12:40:010
2560199188,0cyclictest0-21swapper/208:15:162
2560199182,15cyclictest28-21ksoftirqd/208:42:442
2560199182,15cyclictest0-21swapper/211:42:412
25601991816,1cyclictest28-21ksoftirqd/208:28:102
25601991816,1cyclictest28-21ksoftirqd/207:32:552
25601991816,1cyclictest0-21swapper/212:21:412
25601991816,1cyclictest0-21swapper/207:55:362
25601991815,2cyclictest19327-21/usr/sbin/munin08:50:142
25601991815,2cyclictest13807-21/usr/sbin/munin10:35:232
25601991815,1cyclictest0-21swapper/209:25:192
25601991815,1cyclictest0-21swapper/207:25:012
25601991814,3cyclictest4538-21H212:26:332
25601991814,3cyclictest0-21swapper/209:42:422
25601991814,2cyclictest30645-21grep11:05:152
2560199180,2cyclictest4534-21H212:26:332
2560199180,2cyclictest4526-21H212:26:332
2560199180,2cyclictest4526-21H212:26:332
2560199180,2cyclictest0-21swapper/207:10:192
2560199180,17cyclictest4593-21H212:26:332
2560199180,17cyclictest4530-21H212:26:332
2560199180,17cyclictest4376-21fgrep12:10:222
2560199180,16cyclictest4593-21H212:26:332
2560099182,15cyclictest26756-21cstates11:55:141
2560099182,15cyclictest0-21swapper/109:37:391
25600991815,2cyclictest12691-21chrt12:25:211
25600991814,3cyclictest4538-21H212:26:331
25600991814,3cyclictest4523-21H212:26:331
2560099180,2cyclictest4593-21H212:26:331
2560099180,17cyclictest4530-21H212:26:331
2560099180,16cyclictest4528-21H212:26:331
2559999182,15cyclictest7922chrt09:14:580
2559999182,15cyclictest17092-21cstates08:45:140
25599991817,1cyclictest0-21swapper/012:30:160
25599991816,1cyclictest0-21swapper/012:20:110
25599991816,1cyclictest0-21swapper/012:10:160
25599991816,1cyclictest0-21swapper/009:35:170
25599991816,1cyclictest0-21swapper/009:05:140
25599991815,2cyclictest8145-21kernelversion11:20:170
25599991815,2cyclictest4593-21H212:26:330
25599991814,3cyclictest0-21swapper/010:33:430
2559999181,2cyclictest13174-21chrt12:26:560
2559999181,16cyclictest5228-21awk09:20:160
2559999181,16cyclictest28373-21smartctl11:00:150
2559999181,16cyclictest19937-21chrt08:50:150
2559999180,3cyclictest18996-21fschecks_time11:40:160
2559999180,3cyclictest17731-21sessionclean11:39:010
2559999180,2cyclictest4538-21H212:26:330
2559999180,17cyclictest9-21ksoftirqd/009:41:440
2559999180,16cyclictest0-21swapper/010:56:020
2559999180,15cyclictest4530-21H212:26:330
25601991715,1cyclictest28-21ksoftirqd/210:20:032
25601991715,1cyclictest28-21ksoftirqd/207:50:112
25601991715,1cyclictest0-21swapper/212:25:152
25601991715,1cyclictest0-21swapper/210:05:172
25601991715,1cyclictest0-21swapper/207:35:152
25601991714,2cyclictest4538-21H212:26:332
25601991714,2cyclictest3157-21sed09:15:242
25601991714,2cyclictest31017-21lxd07:45:062
25601991714,2cyclictest26654-21timerwakeupswit09:00:232
25601991714,2cyclictest26192-21fschecks_time08:05:172
2560199171,15cyclictest0-21swapper/212:05:192
2560199170,2cyclictest8505-21grep10:25:132
2560199170,2cyclictest4538-21H212:26:332
2560199170,2cyclictest4532-21H212:26:332
2560199170,2cyclictest4530-21H212:26:332
2560199170,2cyclictest11836-21nfsd408:35:212
2560199170,2cyclictest10188-21expr09:30:142
2560199170,16cyclictest931-21wc09:15:012
2560199170,16cyclictest4538-21H212:26:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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