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2026-04-30 - 20:49
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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 rackdslot4.osadl.org (updated Thu Apr 30, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591223162,49phc2sys0-21swapper/307:07:313
179262208147,50sleep10-21swapper/107:05:261
182302201167,22sleep00-21swapper/007:09:220
181652200168,21sleep20-21swapper/207:08:322
3167921680,5sleep31858399cyclictest10:50:163
18580996911,16cyclictest654-21polkitd10:09:070
138491690,1ptp4l14912-21tune2fs09:15:153
18582996828,6cyclictest33-21ksoftirqd/210:09:222
49452650,2sleep10-21swapper/111:00:251
1858099659,12cyclictest16667-21cut08:10:150
1858099659,11cyclictest2586-21threads10:55:260
1385916346,9phc2sys0-21swapper/307:10:013
18582996226,6cyclictest33-21ksoftirqd/207:55:232
18582996223,7cyclictest33-21ksoftirqd/210:30:192
1858099629,11cyclictest25037-21awk11:40:240
1858099625,17cyclictest0-21swapper/011:20:180
18582996128,7cyclictest33-21ksoftirqd/211:25:132
18582996127,6cyclictest33-21ksoftirqd/207:15:122
18582996031,3cyclictest33-21ksoftirqd/211:35:242
18582996028,6cyclictest33-21ksoftirqd/211:10:162
18582996026,5cyclictest33-21ksoftirqd/210:55:132
18582996025,5cyclictest33-21ksoftirqd/207:25:012
18582996024,6cyclictest33-21ksoftirqd/208:40:122
1858099608,12cyclictest15912-21date08:10:010
1858099607,11cyclictest24710-21cut10:35:220
1858099607,11cyclictest24710-21cut10:35:210
1858099606,15cyclictest0-21swapper/010:30:170
1858099605,16cyclictest0-21swapper/011:10:170
158142600,6sleep31858399cyclictest10:20:113
18582995928,6cyclictest33-21ksoftirqd/212:30:202
18582995928,5cyclictest33-21ksoftirqd/211:30:182
18582995927,4cyclictest33-21ksoftirqd/212:15:102
18582995925,9cyclictest33-21ksoftirqd/208:30:182
18582995924,5cyclictest33-21ksoftirqd/209:45:182
18582995922,5cyclictest33-21ksoftirqd/207:45:162
1858099599,17cyclictest8421-21grep12:15:100
1858099599,15cyclictest2738-21systemctl07:40:240
1858099598,11cyclictest4156-21sed10:00:000
1858099597,11cyclictest518-21cut09:50:220
1858099597,11cyclictest1910-21kernelversion12:00:190
1858099597,10cyclictest6381-21cstates07:50:120
1858099597,10cyclictest21498-21df_abs07:15:140
18582995829,4cyclictest33-21ksoftirqd/211:20:112
18582995823,8cyclictest33-21ksoftirqd/207:25:122
1858099587,11cyclictest27877-21missed_timers09:40:220
252892570,2sleep20-21swapper/210:35:432
252892570,2sleep20-21swapper/210:35:422
18582995727,4cyclictest33-21ksoftirqd/210:20:112
18582995723,5cyclictest33-21ksoftirqd/209:40:252
18582995722,6cyclictest33-21ksoftirqd/212:20:212
1858099577,11cyclictest11770-21irqrtprio12:20:170
1858099575,17cyclictest0-21swapper/008:45:190
1858099575,16cyclictest0-21swapper/011:25:200
1858099574,16cyclictest14326-21date09:15:010
166432570,2sleep30-21swapper/312:30:183
18582995628,4cyclictest33-21ksoftirqd/207:40:212
18582995626,9cyclictest33-21ksoftirqd/212:25:232
18582995625,6cyclictest33-21ksoftirqd/209:55:182
18582995625,5cyclictest33-21ksoftirqd/210:55:002
18582995624,5cyclictest33-21ksoftirqd/210:10:162
18582995623,5cyclictest33-21ksoftirqd/211:15:152
18582995623,3cyclictest33-21ksoftirqd/208:55:162
18582995622,5cyclictest33-21ksoftirqd/208:05:132
18582995618,7cyclictest33-21ksoftirqd/207:50:162
1858099567,11cyclictest7893-21missed_timers09:00:210
187462550,2sleep30-21swapper/309:20:303
18582995529,7cyclictest33-21ksoftirqd/208:00:162
18582995525,9cyclictest33-21ksoftirqd/211:50:132
18582995524,6cyclictest33-21ksoftirqd/212:35:152
18582995522,5cyclictest33-21ksoftirqd/209:15:122
18582995520,5cyclictest33-21ksoftirqd/208:15:162
1858099557,17cyclictest4898-21grep12:05:230
18582995429,7cyclictest33-21ksoftirqd/210:40:252
18582995419,3cyclictest33-21ksoftirqd/212:10:132
1858099548,7cyclictest14756-21python12:25:250
1858099544,16cyclictest0-21swapper/010:15:210
138491540,1ptp4l401ktimersoftd/308:24:033
50798530,40rtkit-daemon0-21swapper/107:10:011
18582995327,7cyclictest33-21ksoftirqd/208:25:242
18582995322,5cyclictest33-21ksoftirqd/209:50:152
18582995321,5cyclictest33-21ksoftirqd/209:05:252
18582995321,5cyclictest33-21ksoftirqd/208:20:262
18582995320,5cyclictest33-21ksoftirqd/212:05:002
18582995223,9cyclictest33-21ksoftirqd/209:40:002
18582995220,5cyclictest33-21ksoftirqd/209:20:232
197902510,3sleep20-21swapper/209:25:152
18582995118,4cyclictest33-21ksoftirqd/209:15:012
1858099517,13cyclictest6323-21df_inode12:10:150
1858099516,7cyclictest5477-21ls08:55:180
18582995024,7cyclictest33-21ksoftirqd/207:30:262
18582995022,10cyclictest33-21ksoftirqd/208:52:582
18582995013,5cyclictest33-21ksoftirqd/211:40:252
18582995012,8cyclictest33-21ksoftirqd/208:36:282
1858099507,11cyclictest19251-21/usr/sbin/munin11:30:170
1858099506,7cyclictest15762-21apt-get12:30:110
1858299493,7cyclictest33-21ksoftirqd/210:45:192
1858299492,6cyclictest33-21ksoftirqd/211:01:482
1858299492,4cyclictest33-21ksoftirqd/209:30:152
1858299492,2cyclictest121rcu_preempt08:45:192
1858099497,8cyclictest21119-21apt-config08:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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