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2025-10-20 - 18:33
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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 Mon Oct 20, 2025 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18627993229,2cyclictest0-21swapper/209:10:162
18627992725,2cyclictest0-21swapper/210:40:142
1862699230,22cyclictest0-21swapper/109:02:231
18627992222,0cyclictest0-21swapper/209:05:162
18627992212,0cyclictest0-21swapper/211:47:032
18627992111,0cyclictest0-21swapper/208:35:142
1862799210,20cyclictest823-21systemd-network12:20:062
1862699210,5cyclictest0-21swapper/109:23:381
1862699210,5cyclictest0-21swapper/109:23:371
1862799202,17cyclictest375-21grep07:35:152
1862699204,15cyclictest0-21swapper/110:38:341
1862699200,5cyclictest0-21swapper/110:15:121
1862599204,15cyclictest0-21swapper/009:16:230
1862599200,19cyclictest0-21swapper/011:10:000
1862799192,1cyclictest4581-21H212:26:332
18627991917,1cyclictest0-21swapper/210:31:142
1862799190,5cyclictest0-21swapper/210:53:412
1862799190,3cyclictest19185-21cpuspeed_turbos07:10:162
1862799190,15cyclictest0-21swapper/210:10:212
1862699193,15cyclictest0-21swapper/110:33:451
18626991916,2cyclictest3193-21cut07:40:011
1862699190,16cyclictest0-21swapper/112:11:021
18625991917,1cyclictest0-21swapper/011:42:560
18625991917,1cyclictest0-21swapper/010:28:320
18625991911,4cyclictest0-21swapper/008:07:200
18625991911,4cyclictest0-21swapper/008:07:200
1862599190,18cyclictest0-21swapper/011:30:230
1862599190,18cyclictest0-21swapper/011:30:230
1862799182,15cyclictest0-21swapper/209:56:142
18627991815,2cyclictest19887-21nfsd410:55:182
18627991815,2cyclictest16037-21ls08:00:192
18627991814,3cyclictest2785-21systemd-logind11:57:072
18627991814,3cyclictest0-21swapper/210:25:142
18627991814,3cyclictest0-21swapper/209:21:142
18627991814,3cyclictest0-21swapper/209:21:142
1862799181,16cyclictest2099-21timerwakeupswit11:20:232
1862799180,2cyclictest4530-21H212:26:332
1862799180,2cyclictest18272-21cstates08:05:162
1862799180,2cyclictest18272-21cstates08:05:152
1862799180,17cyclictest4593-21H212:26:332
1862799180,17cyclictest3350-21master07:25:452
1862799180,17cyclictest0-21swapper/211:38:422
1862799180,16cyclictest6383-21apt-key07:45:012
1862699182,15cyclictest121962chrt07:55:071
18626991815,2cyclictest27223-21grep07:25:141
18626991815,2cyclictest11208-21latency_hist11:40:001
18626991813,4cyclictest17346-21cron08:05:001
1862699181,1cyclictest0-21swapper/107:55:021
1862699181,16cyclictest3634-21cat08:35:141
1862699180,2cyclictest18440-21nfsd411:50:201
1862699180,17cyclictest0-21swapper/111:05:131
1862699180,16cyclictest4581-21H212:26:331
1862699180,16cyclictest0-21swapper/111:15:151
1862599182,15cyclictest4534-21H212:26:330
18625991816,1cyclictest0-21swapper/009:43:240
18625991815,2cyclictest30498-21chrt10:19:310
18625991814,3cyclictest19023-21cut09:00:180
18627991715,1cyclictest0-21swapper/209:42:122
18627991714,2cyclictest9597-21ls08:45:142
18627991714,2cyclictest9550-21grep07:50:132
18627991714,2cyclictest8744-21mailstats10:35:212
18627991714,2cyclictest7555-21pzem_voltage11:30:212
18627991714,2cyclictest7555-21pzem_voltage11:30:202
18627991714,2cyclictest5916-21cstates09:35:142
18627991714,2cyclictest32128-21perf11:20:012
18627991714,2cyclictest28207-21apache_processe10:15:132
18627991714,2cyclictest27877-21grep09:15:202
18627991714,2cyclictest24151-21awk10:05:212
18627991714,2cyclictest18347-21expr09:00:142
18627991714,2cyclictest1472-21lxd12:19:032
18627991714,2cyclictest13555-21cstates10:45:142
18627991714,2cyclictest13372-21sed11:40:212
18627991714,2cyclictest12163-21tr08:50:152
1862799171,15cyclictest5474-21sort09:35:022
1862799171,15cyclictest5038-21timerandwakeup11:25:242
18627991711,5cyclictest0-21swapper/207:30:132
1862799170,2cyclictest9973-21cupsd08:21:332
1862799170,2cyclictest6340-21sed12:25:212
1862799170,2cyclictest26809-21sed07:25:012
1862799170,2cyclictest25313-21apache_accesses12:05:122
1862799170,16cyclictest7208-21cstates07:45:162
1862799170,16cyclictest637-21chrt10:22:132
1862799170,16cyclictest27045-21apache_processe11:10:122
1862799170,16cyclictest26066-21timerwakeupswit11:05:592
1862799170,16cyclictest23754-21cstates08:15:152
1862799170,16cyclictest22957-21sed11:00:202
1862799170,16cyclictest20932-21cstates08:10:152
1862799170,16cyclictest17002-21date09:55:022
1862799170,16cyclictest14183-21latency_hist09:50:012
1862799170,16cyclictest11297-21ntp_states12:35:182
18626991715,1cyclictest21-21ksoftirqd/109:05:121
18626991714,2cyclictest7744-21threads11:30:221
18626991714,2cyclictest7744-21threads11:30:211
18626991714,2cyclictest4593-21H212:26:331
18626991714,2cyclictest4016-21grep09:30:151
18626991714,2cyclictest32658-21fschecks_time08:30:171
18626991714,2cyclictest31691-21hddtemp_smartct10:20:151
18626991714,2cyclictest3038-21postgres12:16:541
18626991714,2cyclictest26164-21apache_volume08:20:131
18626991714,2cyclictest25120-21grep07:20:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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