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2026-07-26 - 04:01
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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 Jul 26, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2767828727,48sleep10-21swapper/119:08:161
2671428221,43sleep00-21swapper/019:05:200
28027996830,15cyclictest14-21ksoftirqd/019:40:010
28027996729,16cyclictest14-21ksoftirqd/021:20:000
2802799667,28cyclictest503-21snmpd23:50:530
167192660,6chrt16722-21grep23:05:480
28027996514,31cyclictest171rcuc/022:58:280
28033996321,9cyclictest26-21ksoftirqd/100:10:051
28033996215,42cyclictest0-21swapper/121:00:351
28027996238,18cyclictest14-21ksoftirqd/021:00:170
28027996219,16cyclictest481-21gdbus22:00:000
28033996137,9cyclictest26-21ksoftirqd/100:27:251
28033996136,9cyclictest26-21ksoftirqd/121:52:241
28033996129,18cyclictest0-21swapper/120:55:141
28033996118,38cyclictest26-21ksoftirqd/122:15:361
28033996036,9cyclictest26-21ksoftirqd/120:40:341
28033996036,8cyclictest26-21ksoftirqd/120:48:051
28033996035,9cyclictest26-21ksoftirqd/123:01:531
28027996037,17cyclictest14-21ksoftirqd/019:30:470
28027996036,18cyclictest14-21ksoftirqd/022:30:340
28027996012,9cyclictest171rcuc/021:20:250
28033995935,9cyclictest26-21ksoftirqd/122:38:471
28033995935,9cyclictest26-21ksoftirqd/122:38:471
28033995935,8cyclictest26-21ksoftirqd/121:18:481
28033995911,12cyclictest17543-21/usr/sbin/munin20:10:351
2802799596,48cyclictest0-21swapper/022:00:120
28033995835,8cyclictest26-21ksoftirqd/123:41:181
28033995835,8cyclictest26-21ksoftirqd/122:49:301
28033995835,8cyclictest26-21ksoftirqd/121:23:511
28033995834,9cyclictest26-21ksoftirqd/122:31:221
28033995825,11cyclictest26-21ksoftirqd/123:11:131
28033995812,41cyclictest0-21swapper/123:20:291
28033995812,11cyclictest0-21swapper/119:30:091
2802799587,14cyclictest14-21ksoftirqd/021:45:130
28027995835,17cyclictest14-21ksoftirqd/019:20:580
28027995834,19cyclictest14-21ksoftirqd/023:20:140
28027995834,18cyclictest14-21ksoftirqd/000:15:360
2802799582,21cyclictest15503-21awk00:35:010
104902585,11sleep00-21swapper/022:50:330
28033995741,11cyclictest0-21swapper/120:05:181
28033995713,9cyclictest0-21swapper/123:25:171
28033995713,39cyclictest0-21swapper/123:05:261
2802799577,45cyclictest0-21swapper/023:55:120
2802799576,14cyclictest14-21ksoftirqd/020:00:210
28027995736,16cyclictest14-21ksoftirqd/023:00:100
28027995714,9cyclictest171rcuc/019:14:320
28027995714,9cyclictest171rcuc/000:38:250
28027995714,10cyclictest171rcuc/020:08:440
2803399568,12cyclictest562-21runrttasks22:07:181
2803399565,46cyclictest24498-21apt-get23:30:141
2803399565,46cyclictest24498-21apt-get23:30:141
2803399564,37cyclictest0-21swapper/100:05:291
2803399563,47cyclictest21386-21df_inode20:20:211
2803399563,47cyclictest21386-21df_inode20:20:211
28033995628,17cyclictest0-21swapper/122:10:141
28033995625,25cyclictest31002-21ntpq23:45:311
28033995612,39cyclictest0-21swapper/122:55:351
28027995633,9cyclictest14-21ksoftirqd/000:25:200
28027995615,9cyclictest171rcuc/021:12:030
28027995615,35cyclictest243-21systemd-journal22:40:390
28027995614,10cyclictest171rcuc/021:41:150
28027995614,10cyclictest171rcuc/000:10:440
28027995614,10cyclictest171rcuc/000:05:150
28027995611,10cyclictest171rcuc/022:29:560
2803399559,11cyclictest0-21swapper/121:45:181
2803399557,11cyclictest0-21swapper/120:15:311
2803399556,43cyclictest0-21swapper/123:15:291
2803399553,16cyclictest32005-21/usr/sbin/munin23:50:361
2803399552,16cyclictest24504-21latency_hist22:00:011
28033995512,38cyclictest0-21swapper/119:35:301
2802799559,42cyclictest171rcuc/020:50:170
28027995533,17cyclictest14-21ksoftirqd/020:32:140
28027995527,24cyclictest14-21ksoftirqd/019:45:240
28027995513,11cyclictest171rcuc/023:38:270
28027995513,11cyclictest171rcuc/020:41:350
28027995513,10cyclictest171rcuc/021:06:540
28027995513,10cyclictest171rcuc/020:21:330
28027995513,10cyclictest171rcuc/020:21:330
2803399547,42cyclictest0-21swapper/119:15:281
2803399547,12cyclictest0-21swapper/120:33:501
28033995422,27cyclictest14346-21df20:00:201
2802799543,46cyclictest30612-21diskstats23:45:210
28027995427,23cyclictest14-21ksoftirqd/000:20:160
2802799542,13cyclictest8078-21grep19:40:500
28027995420,14cyclictest14-21ksoftirqd/023:13:410
28027995419,15cyclictest14-21ksoftirqd/022:12:280
28027995415,11cyclictest171rcuc/023:30:130
28027995415,11cyclictest171rcuc/023:30:130
28027995414,9cyclictest171rcuc/022:05:140
28027995414,9cyclictest171rcuc/020:14:530
28027995414,9cyclictest171rcuc/000:02:130
28027995413,10cyclictest171rcuc/020:55:250
28027995412,10cyclictest171rcuc/023:44:520
2803399536,42cyclictest0-21swapper/120:28:231
2803399536,11cyclictest0-21swapper/121:30:211
2803399536,10cyclictest0-21swapper/119:25:311
2803399534,8cyclictest0-21swapper/123:56:241
28033995338,10cyclictest0-21swapper/119:10:261
28033995327,13cyclictest0-21swapper/121:40:131
2802799539,18cyclictest171rcuc/019:55:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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