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2026-01-12 - 14:54
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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 Mon Jan 12, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591225167,46phc2sys0-21swapper/319:08:443
195342203171,21sleep20-21swapper/219:08:292
194702203170,22sleep10-21swapper/119:07:401
194442199166,22sleep00-21swapper/019:07:180
2495621450,7sleep21994599cyclictest21:28:452
310002720,2sleep10-21swapper/119:30:181
1994699610,22cyclictest3424-21sh20:45:133
1994699610,22cyclictest32290-21users22:45:303
1994699610,22cyclictest1303-21runrttasks00:30:123
1994699610,21cyclictest21983-21uname00:35:193
1994699601,22cyclictest19736-21users21:15:303
1994699600,22cyclictest16061-21dpkg00:25:113
1994699591,21cyclictest6379-21irqstats19:45:183
1994699590,23cyclictest18268-21sh22:20:133
1994699590,22cyclictest11095-21smartctl21:00:153
1994699590,22cyclictest11095-21smartctl21:00:153
1994699590,21cyclictest9656-21users22:00:293
145452590,3sleep30-21swapper/323:15:213
1994699580,22cyclictest6562-21smartctl00:05:163
1994699580,22cyclictest16154-21sh21:10:173
1994699570,21cyclictest10289-21dpkg22:05:113
1994699551,22cyclictest16457-21irqstats20:05:203
1994699550,26cyclictest23825-21cut21:25:183
22272540,4sleep32230-21timerwakeupswit20:40:283
1994699540,23cyclictest27710-21dpkg19:25:003
1994699540,23cyclictest24366-21sensors20:20:243
50798530,2rtkit-daemon506-21rtkit-daemon19:50:201
1994699480,21cyclictest12864-21dpkg22:10:013
1994699430,23cyclictest32714-21/usr/sbin/munin19:35:203
19945994338,3cyclictest32458-21cron21:45:012
1994599433,5cyclictest0-21swapper/220:55:012
19943994329,12cyclictest9-21ksoftirqd/000:17:000
1994699423,20cyclictest30292-21apt-key20:35:003
138491420,0ptp4l401ktimersoftd/323:45:173
138491420,0ptp4l401ktimersoftd/323:39:013
1994599410,12cyclictest11373-21diskstats23:10:132
1994699400,22cyclictest20385-21dpkg20:15:103
19945994033,4cyclictest20765-21runrttasks00:34:592
1994699391,27cyclictest26645-21seq19:20:263
1994699391,22cyclictest20546-21latency_hist23:30:013
1994699390,23cyclictest10932-21cat00:14:593
1994699390,20cyclictest22418-21/usr/sbin/munin19:15:183
1994599392,5cyclictest0-21swapper/221:06:302
1994599390,10cyclictest17513-21sed23:20:262
19943993932,4cyclictest9-21ksoftirqd/021:15:110
19946993832,4cyclictest41-21ksoftirqd/323:53:123
1994699381,23cyclictest2796-21cat21:50:003
1994699380,23cyclictest29648-21chrt21:35:523
1994599381,15cyclictest23639-21grep19:15:222
19944993832,4cyclictest25-21ksoftirqd/122:04:461
1994499380,2cyclictest0-21swapper/123:32:531
1994699370,22cyclictest25730-21df_abs21:30:133
1994699370,22cyclictest22622-21users23:30:283
19944993730,4cyclictest25-21ksoftirqd/122:10:201
19944993728,3cyclictest25-21ksoftirqd/123:38:591
19946993631,3cyclictest10665-21cron23:10:013
1994699361,25cyclictest0-21swapper/322:25:123
1994699361,22cyclictest8841-21irqstats19:50:193
1994699361,16cyclictest0-21swapper/321:20:293
1994599364,17cyclictest20571-21perf23:30:002
19945993630,4cyclictest33-21ksoftirqd/219:14:072
19944993630,4cyclictest25-21ksoftirqd/123:06:001
19944993630,4cyclictest25-21ksoftirqd/100:21:511
19944993629,5cyclictest25-21ksoftirqd/119:41:061
19943993630,4cyclictest9-21ksoftirqd/020:51:490
19943993630,4cyclictest9-21ksoftirqd/019:24:080
19943993630,3cyclictest9-21ksoftirqd/020:24:590
19943993629,5cyclictest9-21ksoftirqd/021:29:270
19946993529,4cyclictest41-21ksoftirqd/323:13:453
1994699350,26cyclictest0-21swapper/300:15:223
1994699350,25cyclictest0-21swapper/320:32:253
1994599354,7cyclictest33-21ksoftirqd/220:05:162
19945993531,3cyclictest33-21ksoftirqd/223:05:122
19944993530,3cyclictest25-21ksoftirqd/123:22:571
19944993529,4cyclictest25-21ksoftirqd/123:59:561
19944993529,4cyclictest25-21ksoftirqd/123:28:471
19943993530,3cyclictest9-21ksoftirqd/000:05:100
19946993428,4cyclictest41-21ksoftirqd/322:40:393
19946993428,4cyclictest41-21ksoftirqd/321:41:383
1994699341,30cyclictest15567-21cut22:15:143
1994699341,30cyclictest15567-21cut22:15:143
1994599346,14cyclictest31508-21if_enp1s023:50:162
1994599344,7cyclictest33-21ksoftirqd/223:32:222
19945993428,4cyclictest33-21ksoftirqd/223:04:532
19945993428,4cyclictest33-21ksoftirqd/220:01:332
19945993428,4cyclictest33-21ksoftirqd/200:09:402
19944993429,3cyclictest25-21ksoftirqd/119:29:581
19944993429,3cyclictest25-21ksoftirqd/100:30:171
19944993428,4cyclictest25-21ksoftirqd/123:49:131
19944993428,4cyclictest25-21ksoftirqd/123:43:561
19944993428,4cyclictest25-21ksoftirqd/122:34:351
19944993428,4cyclictest25-21ksoftirqd/121:57:331
19944993428,4cyclictest25-21ksoftirqd/121:52:311
19944993428,4cyclictest25-21ksoftirqd/120:50:531
19944993428,4cyclictest25-21ksoftirqd/120:34:481
19944993428,4cyclictest25-21ksoftirqd/120:24:221
19944993427,4cyclictest25-21ksoftirqd/121:31:051
19943993428,4cyclictest9-21ksoftirqd/022:28:260
19943993428,4cyclictest9-21ksoftirqd/021:24:060
19943993428,4cyclictest9-21ksoftirqd/021:04:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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