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2025-10-23 - 18:56
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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 792 highest latencies:
System rack3slot6.osadl.org (updated Thu Oct 23, 2025 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1588421170,4chrt0-21swapper/009:00:140
7858210333,25sleep10-21swapper/107:06:101
8396999550,25cyclictest14-21ksoftirqd/009:55:130
8400998963,15cyclictest26-21ksoftirqd/111:45:121
783728818,25sleep00-21swapper/007:05:570
8400998659,15cyclictest26-21ksoftirqd/112:05:131
8400998558,19cyclictest26-21ksoftirqd/107:15:121
8400998558,17cyclictest26-21ksoftirqd/110:55:141
839699858,32cyclictest0-21swapper/010:20:120
8400998457,16cyclictest26-21ksoftirqd/108:20:111
8400998352,20cyclictest26-21ksoftirqd/108:05:141
839699819,12cyclictest0-21swapper/009:30:130
8400998056,20cyclictest26-21ksoftirqd/109:50:131
8400997953,21cyclictest26-21ksoftirqd/109:05:141
8400997953,17cyclictest26-21ksoftirqd/108:40:251
13732780,6sleep11359-21sendmail08:20:011
8400997751,19cyclictest21434-21apt-get09:15:151
8396997739,20cyclictest14-21ksoftirqd/010:15:190
839699772,15cyclictest2735-21cstates11:25:210
8400997648,22cyclictest26-21ksoftirqd/108:50:141
8400997647,17cyclictest26-21ksoftirqd/107:20:131
8396997618,30cyclictest27648-21aten2.4-expect11:05:220
8400997548,20cyclictest26-21ksoftirqd/107:25:151
8400997544,17cyclictest0-21swapper/109:30:131
8400997448,20cyclictest26-21ksoftirqd/112:20:151
8400997332,37cyclictest26-21ksoftirqd/109:44:311
184432730,23sleep0171rcuc/007:35:290
8400997244,17cyclictest0-21swapper/108:55:141
8400997111,49cyclictest0-21swapper/111:55:111
8400997038,19cyclictest26-21ksoftirqd/109:45:161
8400997038,19cyclictest26-21ksoftirqd/109:45:151
8400996941,22cyclictest26-21ksoftirqd/112:30:151
8400996940,23cyclictest26-21ksoftirqd/112:00:121
8396996922,33cyclictest14-21ksoftirqd/009:05:160
8400996837,25cyclictest26-21ksoftirqd/108:35:141
8396996834,28cyclictest14-21ksoftirqd/010:50:290
8400996737,23cyclictest26-21ksoftirqd/109:20:141
8400996642,19cyclictest26-21ksoftirqd/110:00:161
8400996639,17cyclictest0-21swapper/110:10:161
8400996633,20cyclictest0-21swapper/112:10:141
8400996631,26cyclictest26-21ksoftirqd/111:20:141
8396996630,29cyclictest14-21ksoftirqd/009:20:120
8396996624,21cyclictest504-21snmpd09:15:380
8400996536,20cyclictest8390-21cyclictest07:45:171
8400996536,20cyclictest30492-21runrttasks08:10:241
8400996536,19cyclictest26-21ksoftirqd/110:25:141
8400996535,22cyclictest8390-21cyclictest10:05:121
8400996535,22cyclictest8390-21cyclictest10:05:111
8400996534,24cyclictest26-21ksoftirqd/111:00:141
839699656,18cyclictest12362-21apt-get08:50:160
8400996435,18cyclictest0-21swapper/111:25:131
8400996434,25cyclictest26-21ksoftirqd/111:35:111
840099635,16cyclictest5026-21apt-get08:30:151
8400996338,19cyclictest26-21ksoftirqd/110:45:161
8400996333,24cyclictest26-21ksoftirqd/112:15:151
8400996331,22cyclictest19390-31sort07:40:131
8400996328,25cyclictest448-21dbus-daemon08:00:001
8400996324,31cyclictest26-21ksoftirqd/111:10:201
8400996313,37cyclictest0-21swapper/109:35:121
840099629,26cyclictest0-21swapper/110:30:151
8400996234,20cyclictest8390-21cyclictest08:45:151
8400996234,20cyclictest8390-21cyclictest08:45:141
8400996231,22cyclictest8390-21cyclictest11:15:241
8400996231,22cyclictest8390-21cyclictest09:10:141
839699616,15cyclictest151rcu_preempt08:40:040
8396996134,20cyclictest14-21ksoftirqd/009:40:110
8400996031,22cyclictest8390-21cyclictest10:15:151
8400996024,24cyclictest26-21ksoftirqd/111:33:411
8396996034,19cyclictest14-21ksoftirqd/008:15:230
839699602,52cyclictest65-21kswapd008:10:140
840099593,49cyclictest18511-21processes07:35:321
8400995930,23cyclictest26-21ksoftirqd/109:55:141
8400995914,32cyclictest0-21swapper/110:40:141
8400995914,10cyclictest26-21ksoftirqd/107:13:121
8400995913,11cyclictest0-21swapper/107:34:151
8396995937,9cyclictest14-21ksoftirqd/012:00:010
8396995933,19cyclictest14-21ksoftirqd/010:30:110
8400995840,10cyclictest26-21ksoftirqd/111:10:001
8400995839,11cyclictest26-21ksoftirqd/108:25:281
8400995833,9cyclictest26-21ksoftirqd/109:25:291
8400995829,22cyclictest448-21dbus-daemon11:45:011
8400995823,26cyclictest26-21ksoftirqd/107:50:171
839699588,12cyclictest0-21swapper/012:30:150
839699587,37cyclictest0-21swapper/008:55:120
8396995834,19cyclictest14-21ksoftirqd/012:00:190
8400995737,12cyclictest17424-21cron09:05:001
8400995734,17cyclictest26-21ksoftirqd/112:30:001
8400995730,20cyclictest487-21gdbus10:40:001
840099572,48cyclictest28826-21latency_hist12:40:031
840099572,48cyclictest28826-21latency_hist12:40:021
8396995733,19cyclictest14-21ksoftirqd/008:00:190
8396995729,9cyclictest14-21ksoftirqd/011:00:330
8396995718,16cyclictest3445-21aten2.4-expect08:25:180
141282570,9chrt0-21swapper/007:25:010
8400995634,17cyclictest26-21ksoftirqd/111:50:341
8400995614,37cyclictest0-21swapper/110:20:181
839699564,45cyclictest7901-21users08:35:360
8396995631,20cyclictest14-21ksoftirqd/007:50:190
8396995631,19cyclictest14-21ksoftirqd/010:05:230
8396995631,19cyclictest14-21ksoftirqd/010:05:220
8396995627,22cyclictest14-21ksoftirqd/007:25:360
8396995611,34cyclictest0-21swapper/012:15:150
8400995538,11cyclictest26-21ksoftirqd/108:00:341
8400995533,17cyclictest26-21ksoftirqd/110:50:331
839699555,45cyclictest0-21swapper/008:20:320
839699553,18cyclictest12866-21sort11:55:000
8396995519,16cyclictest4318-21aten2.4-expect11:30:180
8396995517,16cyclictest25091-21aten2.4-expect09:25:190
839699548,41cyclictest0-21swapper/012:35:300
839699548,41cyclictest0-21swapper/012:35:300
8396995438,9cyclictest14-21ksoftirqd/010:55:020
8396995431,18cyclictest14-21ksoftirqd/007:55:190
8396995422,28cyclictest14-21ksoftirqd/007:40:290
8396995419,29cyclictest4836-21aten2.4-expect10:00:180
839699537,11cyclictest0-21swapper/010:10:140
839699535,43cyclictest0-21swapper/012:10:200
8396995332,16cyclictest14-21ksoftirqd/011:43:520
8396995315,15cyclictest8519-21aten2.4-expect07:10:190
839699526,41cyclictest0-21swapper/009:10:190
839699525,43cyclictest0-21swapper/009:51:250
839699525,32cyclictest151rcu_preempt10:40:410
8396995236,9cyclictest14-21ksoftirqd/009:38:400
8396995235,10cyclictest14-21ksoftirqd/008:35:010
8396995232,15cyclictest14-21ksoftirqd/007:30:070
8396995231,16cyclictest14-21ksoftirqd/010:25:180
8396995213,33cyclictest0-21swapper/012:25:200
839699513,41cyclictest30111-21dpkg08:10:020
839699513,15cyclictest553-21runrttasks11:36:440
8396995130,17cyclictest14-21ksoftirqd/010:35:170
8396995127,18cyclictest448-21dbus-daemon10:50:000
8396995125,20cyclictest17202-21ntp_kernel_err12:05:290
8396995121,25cyclictest14-21ksoftirqd/009:45:340
8396995121,25cyclictest14-21ksoftirqd/009:45:330
839699505,40cyclictest0-21swapper/007:19:040
8396995029,15cyclictest31373-21apt-get11:15:240
839699502,42cyclictest11607-21/usr/sbin/munin08:45:360
839699502,42cyclictest11607-21/usr/sbin/munin08:45:350
8396995015,16cyclictest22984-21basename07:49:590
839699495,9cyclictest0-21swapper/011:10:260
8396994933,9cyclictest14-21ksoftirqd/011:20:300
8396994826,16cyclictest23363-21cron12:24:590
8396994630,10cyclictest14-21ksoftirqd/011:45:190
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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