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2026-08-30 - 05:56
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Sun Aug 30, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17389911077,18cyclictest0-21swapper/023:10:120
17389910575,20cyclictest14-21ksoftirqd/019:50:120
17389910575,19cyclictest14-21ksoftirqd/021:45:130
17389910478,13cyclictest14-21ksoftirqd/021:10:130
250921020,6chrt2508-21/usr/sbin/munin22:10:461
250921020,6chrt2508-21/usr/sbin/munin22:10:461
17389910176,17cyclictest14-21ksoftirqd/019:35:120
17389910176,17cyclictest14-21ksoftirqd/019:35:110
17389910070,20cyclictest14-21ksoftirqd/020:00:110
17389910065,20cyclictest14-21ksoftirqd/020:15:140
1738999872,14cyclictest14-21ksoftirqd/019:10:110
1738999865,23cyclictest14-21ksoftirqd/020:30:130
1738999865,23cyclictest14-21ksoftirqd/020:30:130
1738999662,18cyclictest14-21ksoftirqd/022:15:130
1738999459,20cyclictest14-21ksoftirqd/023:45:150
1738999412,66cyclictest0-21swapper/023:50:110
174099939,64cyclictest0-21swapper/100:10:101
173899923,61cyclictest3634-21aten2.4_r3power20:45:170
1738999211,67cyclictest0-21swapper/000:25:120
173899915,57cyclictest0-21swapper/019:25:300
1738999060,19cyclictest14-21ksoftirqd/022:10:260
1738999060,19cyclictest14-21ksoftirqd/022:10:260
1738999056,21cyclictest0-21swapper/019:15:130
140129018,27sleep00-21swapper/019:08:170
174099869,62cyclictest0-21swapper/121:35:121
1738998649,21cyclictest14-21ksoftirqd/020:40:120
1738998453,26cyclictest14-21ksoftirqd/000:35:120
1740998313,21cyclictest0-21swapper/122:25:151
173899838,59cyclictest29522-21chrt23:30:120
1738998352,19cyclictest0-21swapper/023:40:130
1738998348,23cyclictest14-21ksoftirqd/022:20:130
1738998313,59cyclictest0-21swapper/022:55:140
173899817,60cyclictest32396-21apt-get20:35:120
1738998146,22cyclictest14-21ksoftirqd/022:45:160
1738998144,24cyclictest14-21ksoftirqd/021:25:140
1738998116,54cyclictest0-21swapper/020:25:120
1738998112,56cyclictest0-21swapper/023:55:150
174099809,21cyclictest0-21swapper/119:40:141
174099808,54cyclictest0-21swapper/100:25:141
173899807,53cyclictest27182-21seq20:20:130
1738998044,23cyclictest14-21ksoftirqd/000:15:260
1738998042,26cyclictest14-21ksoftirqd/023:05:120
1738998018,51cyclictest0-21swapper/023:15:130
1738998016,52cyclictest0-21swapper/021:55:150
174099798,54cyclictest0-21swapper/119:45:141
174099798,53cyclictest0-21swapper/123:25:141
174099797,20cyclictest0-21swapper/122:40:161
1738997943,24cyclictest14-21ksoftirqd/021:20:140
1738997917,51cyclictest0-21swapper/021:35:140
1738997913,55cyclictest0-21swapper/022:50:140
1738997911,54cyclictest503-21snmpd22:40:130
1738997911,53cyclictest0-21swapper/020:55:120
3243927831,34sleep10-21swapper/119:05:181
173899788,56cyclictest31262-21apt-get23:35:130
1738997837,30cyclictest14-21ksoftirqd/019:20:240
173899783,66cyclictest562-21runrttasks00:34:070
173899782,69cyclictest13518-21df_inode19:40:210
1738997814,54cyclictest0-21swapper/020:50:150
1738997811,54cyclictest0-21swapper/000:10:130
174099776,23cyclictest26-21ksoftirqd/100:20:001
1740997734,27cyclictest26-21ksoftirqd/121:55:121
173899779,54cyclictest21890-21apt-get20:05:130
1738997715,50cyclictest0-21swapper/022:05:120
173899763,67cyclictest27777-21apt-get23:25:140
1738997633,29cyclictest14-21ksoftirqd/023:20:150
1738997632,32cyclictest14-21ksoftirqd/000:05:150
1738997614,51cyclictest0-21swapper/019:45:150
1738997614,51cyclictest0-21swapper/000:20:110
1738997613,54cyclictest0-21swapper/019:30:130
1738997613,52cyclictest0-21swapper/000:00:130
1738997612,53cyclictest0-21swapper/021:05:160
174099758,50cyclictest0-21swapper/122:30:131
1738997536,26cyclictest14329-21apt-get21:15:150
1738997513,52cyclictest0-21swapper/021:50:150
1738997513,50cyclictest0-21swapper/019:55:130
1738997512,52cyclictest0-21swapper/022:30:150
174099747,24cyclictest26-21ksoftirqd/122:40:001
174099744,51cyclictest26-21ksoftirqd/119:20:251
1738997313,51cyclictest0-21swapper/020:10:140
1738997310,51cyclictest0-21swapper/022:00:120
1740997130,26cyclictest26-21ksoftirqd/122:05:001
173899715,59cyclictest0-21swapper/022:35:120
1738997113,50cyclictest0-21swapper/021:30:130
1740997045,10cyclictest26-21ksoftirqd/122:05:241
173899703,60cyclictest20587-21sleep23:05:010
174099696,46cyclictest0-21swapper/123:00:101
1740996912,18cyclictest251rcuc/123:35:001
173899698,50cyclictest23124-21apt-get21:40:130
174099688,44cyclictest0-21swapper/100:00:141
174099685,48cyclictest0-21swapper/123:55:161
1740996829,23cyclictest26-21ksoftirqd/122:20:161
1740996824,39cyclictest26-21ksoftirqd/119:30:221
173899688,48cyclictest8761-21apt-get21:00:130
174099676,25cyclictest26-21ksoftirqd/123:40:121
174099674,23cyclictest26-21ksoftirqd/120:20:001
174099667,25cyclictest26-21ksoftirqd/122:15:121
174099655,45cyclictest0-21swapper/119:15:151
174099655,15cyclictest26-21ksoftirqd/121:00:011
1740996517,42cyclictest0-21swapper/120:30:211
1740996517,42cyclictest0-21swapper/120:30:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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