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2026-07-05 - 03:04
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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 rackdslot3.osadl.org (updated Sat Jul 04, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491211176,23phc2sys0-21swapper/307:05:503
148872205171,23sleep20-21swapper/207:08:062
145392202169,22sleep00-21swapper/007:06:550
144262202170,22sleep10-21swapper/107:05:301
1145821370,3sleep31533799cyclictest11:30:213
139391880,0ptp4l401ktimersoftd/310:35:173
15336997315,12cyclictest7181-21/usr/sbin/munin11:20:262
15336996912,12cyclictest16124-21irqrtprio11:40:192
15336996712,16cyclictest18173-21if_enp1s011:45:172
15336996615,9cyclictest22017-21sed07:20:252
15336996612,16cyclictest18243-21grep08:20:272
15336996612,10cyclictest7179-21df_abs10:15:152
15336996611,18cyclictest20306-21df_abs11:50:142
15336996515,11cyclictest9684-21ls11:25:272
15336996511,11cyclictest24217-21irqrtprio10:50:182
15336996511,11cyclictest24217-21irqrtprio10:50:182
139391650,1ptp4l401ktimersoftd/311:50:173
1533699648,15cyclictest0-21swapper/208:50:292
1533699648,15cyclictest0-21swapper/208:50:292
1533699648,15cyclictest0-21swapper/207:10:182
15336996415,11cyclictest17823-21sort07:15:142
15336996413,9cyclictest2970-21wc11:14:592
15336996410,16cyclictest0-21swapper/211:15:242
15336996313,17cyclictest15111-21latency_hist09:25:002
15336996310,10cyclictest0-21swapper/207:40:212
15336996214,12cyclictest1845-21latency_hist10:05:002
15336996211,9cyclictest0-21swapper/208:35:182
15336996211,15cyclictest0-21swapper/210:35:262
15336996210,18cyclictest2645-21unixbench_multi08:55:262
15336996210,16cyclictest0-21swapper/207:50:002
15336996113,9cyclictest11002-21if_enp4s011:30:182
15336996113,16cyclictest5138-21sed12:25:212
15336996112,10cyclictest10936-21fschecks_time09:15:142
1533699609,10cyclictest0-21swapper/207:50:252
15336996014,17cyclictest23585-21sed07:25:192
15336996013,11cyclictest26215-21threads12:00:252
15336996011,9cyclictest0-21swapper/209:40:002
57892590,4sleep31533799cyclictest11:20:153
15336995915,11cyclictest5673-21awk10:10:212
15336995913,16cyclictest16205-21sed09:25:182
15336995913,15cyclictest23229-21sed09:40:182
15336995912,16cyclictest19035-21cstates10:40:152
15336995912,11cyclictest2374-21cstates10:05:142
15336995911,9cyclictest0-21swapper/209:55:132
1533699589,18cyclictest0-21swapper/208:10:002
15336995814,9cyclictest6773-21gpgv12:30:012
15336995812,9cyclictest27375-21df_abs12:05:142
15336995812,10cyclictest15094-21cut08:15:202
15334995826,4cyclictest9-21ksoftirqd/008:25:180
15336995714,17cyclictest6399-21/usr/sbin/munin07:55:282
15336995713,14cyclictest7960-21date09:10:002
15336995711,15cyclictest7503-21df_abs08:00:142
15335995622,4cyclictest25-21ksoftirqd/110:50:231
15335995622,4cyclictest25-21ksoftirqd/110:50:231
15336995515,16cyclictest17652-21/usr/sbin/munin09:30:242
15336995514,11cyclictest10538-21which12:35:242
15336995513,11cyclictest11905-21expr10:25:162
15336995512,16cyclictest14247-21sensors11:35:252
15336995511,9cyclictest0-21swapper/212:10:232
1533699550,12cyclictest3203-21gunzip12:20:232
15335995515,12cyclictest25-21ksoftirqd/110:20:181
139391550,1ptp4l401ktimersoftd/312:30:183
1533699549,9cyclictest0-21swapper/211:00:222
1533699549,11cyclictest0-21swapper/210:45:142
15336995413,11cyclictest19331-21cat08:25:132
15336995412,11cyclictest25071-21apt-get07:30:112
15336995412,11cyclictest22853-21hostname11:55:182
139391540,1ptp4l401ktimersoftd/309:38:383
55512530,4sleep15557-21missed_timers10:10:201
15336995313,7cyclictest28463-21meminfo07:35:192
15335995322,10cyclictest25-21ksoftirqd/110:45:201
15335995320,4cyclictest25-21ksoftirqd/112:05:131
15334995321,4cyclictest9-21ksoftirqd/011:05:010
15334995320,3cyclictest9-21ksoftirqd/010:15:000
139391530,1ptp4l401ktimersoftd/307:46:403
15336995213,7cyclictest28986-21diskstats08:45:152
15336995213,10cyclictest28046-21cut09:50:172
15335995223,2cyclictest25-21ksoftirqd/109:20:171
15336995113,7cyclictest10309-21memory10:20:202
15336995112,17cyclictest12173-21cstates08:10:132
15336995013,9cyclictest14169-21cpuspeed_turbos10:30:132
15336995013,8cyclictest31818-21apt12:15:102
15336995013,7cyclictest5120-21users09:00:282
15337994938,2cyclictest25694-21grep10:55:003
15337994938,2cyclictest25694-21grep10:55:003
15336994911,8cyclictest31921-21ps11:05:242
15334994921,4cyclictest9-21ksoftirqd/007:20:120
1533699489,15cyclictest0-21swapper/210:55:232
15334994814,3cyclictest9-21ksoftirqd/010:30:000
15335994722,10cyclictest25-21ksoftirqd/112:29:591
15335994615,10cyclictest25-21ksoftirqd/108:20:001
15334994615,4cyclictest9-21ksoftirqd/011:35:190
15335994514,3cyclictest25-21ksoftirqd/112:10:191
15334994431,4cyclictest9-21ksoftirqd/009:25:140
15334994415,3cyclictest9-21ksoftirqd/007:30:190
139391440,0ptp4l401ktimersoftd/311:27:583
139391440,0ptp4l401ktimersoftd/311:10:143
1533599436,6cyclictest25-21ksoftirqd/109:05:251
1533499431,3cyclictest9-21ksoftirqd/011:25:240
15334994312,3cyclictest9-21ksoftirqd/008:35:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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