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2026-04-24 - 16:05
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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 rackdslot3.osadl.org (updated Fri Apr 24, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491229163,22phc2sys0-21swapper/307:08:473
188552204170,23sleep20-21swapper/207:08:562
186132202170,21sleep10-21swapper/107:05:451
188162198166,21sleep00-21swapper/007:08:250
1924099619,9cyclictest6770-21systemctl08:55:222
134491600,2getstats11945-21ls11:20:263
1924099588,12cyclictest5289-21date08:55:022
19240995710,19cyclictest9509-21awk09:00:262
1924099567,11cyclictest2560-21cat07:40:192
1924099557,8cyclictest3030-21sendmail_mailqu12:10:242
1924099546,10cyclictest28392-21cpuspeed10:50:112
1924099545,15cyclictest12687-21ptp4l-jitter08:00:232
310952530,2sleep00-21swapper/010:55:140
1924099538,14cyclictest22942-21ls07:15:212
1924099528,8cyclictest16101-21apt-get08:10:112
1924099527,7cyclictest21218-21apt-get10:35:132
1924099526,14cyclictest19269-21apt-get07:10:112
139391520,1ptp4l391rcuc/307:50:403
1924099519,18cyclictest26995-21awk08:30:202
1924099518,13cyclictest30847-21ssh09:45:262
1924099516,8cyclictest19049-21ls09:20:252
1924099506,16cyclictest5607-21taskset12:15:252
1924099497,7cyclictest18755-21df08:15:132
1924099496,7cyclictest13137-21ls10:15:242
19240994943,4cyclictest13585-21turbostat12:35:002
1924099468,7cyclictest23746-21ls11:45:262
1924099467,7cyclictest24884-21iostat07:20:182
19238994438,3cyclictest9-21ksoftirqd/008:00:000
139391440,0ptp4l401ktimersoftd/311:44:563
139391430,0ptp4l401ktimersoftd/312:35:223
139391430,0ptp4l401ktimersoftd/307:15:443
1923999421,38cyclictest21268-21fschecks_count08:20:141
139391420,0ptp4l401ktimersoftd/311:50:003
1924099416,16cyclictest10294-21/usr/sbin/munin11:20:162
1924099416,14cyclictest30222-21memory07:30:212
19240994034,4cyclictest5240-21cron11:10:002
19240994034,3cyclictest33-21ksoftirqd/208:00:002
19240994028,10cyclictest33-21ksoftirqd/211:55:112
19239994034,3cyclictest25-21ksoftirqd/109:40:001
139391400,0ptp4l401ktimersoftd/310:25:153
57898390,3rtkit-daemon31713-21apt-get09:50:120
57898390,3rtkit-daemon24589-21apt-get09:35:110
1924099395,7cyclictest7740-21meminfo12:20:202
19241993833,3cyclictest41-21ksoftirqd/312:20:003
19241993832,4cyclictest41-21ksoftirqd/308:35:253
19241993732,3cyclictest41-21ksoftirqd/308:15:013
19241993731,4cyclictest41-21ksoftirqd/308:24:593
19238993733,2cyclictest9-21ksoftirqd/010:00:000
19238993732,3cyclictest9-21ksoftirqd/012:05:000
19238993732,3cyclictest9-21ksoftirqd/009:00:010
19238993731,3cyclictest9-21ksoftirqd/010:30:170
19238993731,3cyclictest9-21ksoftirqd/010:30:170
19238993731,3cyclictest9-21ksoftirqd/007:24:590
134491370,1getstats0-21swapper/311:10:253
57898360,2rtkit-daemon0-21swapper/008:21:150
19241993632,2cyclictest41-21ksoftirqd/311:40:003
19241993629,4cyclictest41-21ksoftirqd/312:20:533
1924099364,29cyclictest21095-21ps09:25:232
1924099364,29cyclictest21095-21ps09:25:232
19238993632,2cyclictest9-21ksoftirqd/012:25:170
19238993632,2cyclictest9-21ksoftirqd/008:55:000
19238993630,3cyclictest9-21ksoftirqd/012:35:120
19238993630,3cyclictest9-21ksoftirqd/009:45:000
139391360,0ptp4l401ktimersoftd/307:40:123
57898350,2rtkit-daemon0-21swapper/109:18:071
57898350,2rtkit-daemon0-21swapper/108:51:391
19241993531,2cyclictest41-21ksoftirqd/312:15:013
19241993529,4cyclictest41-21ksoftirqd/312:30:533
19241993529,4cyclictest41-21ksoftirqd/308:51:383
19241993529,3cyclictest32700-21ls08:45:003
1924099357,17cyclictest14201-21/usr/sbin/munin12:35:142
19240993530,3cyclictest33-21ksoftirqd/208:35:122
19239993530,3cyclictest25-21ksoftirqd/112:35:111
19239993529,4cyclictest25-21ksoftirqd/111:18:221
19239993529,4cyclictest25-21ksoftirqd/110:48:251
19239993529,4cyclictest25-21ksoftirqd/110:42:081
19239993529,4cyclictest25-21ksoftirqd/110:02:401
19238993531,2cyclictest9-21ksoftirqd/008:30:000
19238993530,3cyclictest9-21ksoftirqd/010:45:170
19238993530,3cyclictest9-21ksoftirqd/008:30:090
19238993530,3cyclictest9-21ksoftirqd/008:15:180
19238993529,4cyclictest9-21ksoftirqd/009:14:530
19241993430,3cyclictest41-21ksoftirqd/309:05:283
19241993430,2cyclictest41-21ksoftirqd/308:45:253
19241993429,3cyclictest41-21ksoftirqd/309:05:003
19241993429,3cyclictest41-21ksoftirqd/307:50:013
19241993429,3cyclictest41-21ksoftirqd/307:35:113
19241993428,4cyclictest41-21ksoftirqd/309:47:183
19241993428,4cyclictest41-21ksoftirqd/309:28:283
19241993428,4cyclictest41-21ksoftirqd/309:28:283
19241993428,4cyclictest41-21ksoftirqd/308:59:243
19240993428,4cyclictest33-21ksoftirqd/211:31:152
19240993428,4cyclictest33-21ksoftirqd/210:26:322
19240993428,3cyclictest33-21ksoftirqd/209:30:412
19239993429,3cyclictest25-21ksoftirqd/109:10:141
19239993428,4cyclictest25-21ksoftirqd/110:36:221
19239993428,4cyclictest25-21ksoftirqd/109:23:411
19239993428,4cyclictest25-21ksoftirqd/108:58:581
19239993428,4cyclictest25-21ksoftirqd/108:41:221
19239993428,4cyclictest25-21ksoftirqd/108:31:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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