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2026-05-18 - 04:13
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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 May 18, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
136552206170,24sleep30-21swapper/319:06:383
138942201168,22sleep10-21swapper/119:09:451
137782201167,22sleep20-21swapper/219:08:132
136892201167,22sleep00-21swapper/019:07:030
1259321590,6sleep31421199cyclictest20:10:213
140792740,4sleep2321ktimersoftd/200:34:592
138491690,1ptp4l401ktimersoftd/321:53:583
138491680,1ptp4l401ktimersoftd/323:30:103
253832670,2sleep00-21swapper/019:30:210
138491620,1ptp4l401ktimersoftd/321:03:433
134991580,6getstats1421199cyclictest00:28:223
239132560,5sleep341-21ksoftirqd/319:30:003
106952530,2sleep00-21swapper/020:05:280
1420999511,6cyclictest25-21ksoftirqd/100:30:211
206542500,2sleep20-21swapper/219:20:242
138491500,1ptp4l391rcuc/320:42:553
138491490,1ptp4l391rcuc/321:44:003
1420999485,7cyclictest25-21ksoftirqd/121:20:241
1420999485,7cyclictest25-21ksoftirqd/121:20:241
1420999474,6cyclictest25-21ksoftirqd/123:15:151
14209994713,7cyclictest25-21ksoftirqd/121:50:151
1420999470,6cyclictest25-21ksoftirqd/122:05:211
1420999466,7cyclictest25-21ksoftirqd/119:40:231
1420999464,7cyclictest25-21ksoftirqd/122:21:341
1421199451,32cyclictest23697-21cron22:45:003
1420999455,8cyclictest25-21ksoftirqd/121:25:251
1420999453,8cyclictest25-21ksoftirqd/122:45:171
1420999453,5cyclictest25-21ksoftirqd/120:17:261
1420999452,5cyclictest25-21ksoftirqd/122:59:591
1420999451,5cyclictest0-21swapper/121:41:541
138491450,0ptp4l401ktimersoftd/322:15:233
1420999445,9cyclictest25-21ksoftirqd/120:25:191
1420999445,6cyclictest25-21ksoftirqd/121:55:141
1420999443,6cyclictest25-21ksoftirqd/100:35:131
1420999442,7cyclictest25-21ksoftirqd/119:30:151
1420999442,5cyclictest25-21ksoftirqd/120:04:381
1420999440,6cyclictest25-21ksoftirqd/121:40:001
1420999434,8cyclictest25-21ksoftirqd/120:55:121
1420999433,9cyclictest25-21ksoftirqd/120:40:271
1420999432,6cyclictest25-21ksoftirqd/121:12:341
1420999432,5cyclictest25-21ksoftirqd/122:10:551
1420999432,5cyclictest25-21ksoftirqd/120:45:581
1420999430,6cyclictest25-21ksoftirqd/119:10:251
1420999430,6cyclictest25-21ksoftirqd/100:05:481
138491430,0ptp4l401ktimersoftd/320:22:373
138491430,0ptp4l401ktimersoftd/320:22:373
1420999424,7cyclictest25-21ksoftirqd/123:40:121
1420999424,7cyclictest25-21ksoftirqd/123:40:121
1420999424,7cyclictest25-21ksoftirqd/123:00:201
1420999424,7cyclictest25-21ksoftirqd/119:55:131
1420999423,7cyclictest25-21ksoftirqd/119:25:221
1420999422,8cyclictest25-21ksoftirqd/123:25:121
1420999422,7cyclictest25-21ksoftirqd/123:30:191
1420999422,6cyclictest25-21ksoftirqd/122:00:131
1420999422,5cyclictest25-21ksoftirqd/119:20:171
1420999421,5cyclictest25-21ksoftirqd/123:45:151
14209994213,6cyclictest25-21ksoftirqd/120:21:311
14209994213,6cyclictest25-21ksoftirqd/120:21:311
138491420,0ptp4l401ktimersoftd/323:55:233
1420999414,5cyclictest25-21ksoftirqd/120:50:121
1420999414,5cyclictest25-21ksoftirqd/120:50:111
1420999412,8cyclictest25-21ksoftirqd/122:38:311
1420999412,5cyclictest25-21ksoftirqd/119:49:341
1420999412,5cyclictest25-21ksoftirqd/100:17:401
1420999412,5cyclictest25-21ksoftirqd/100:00:311
1420999411,5cyclictest25-21ksoftirqd/123:20:541
14209994111,28cyclictest0-21swapper/119:35:231
138491410,0ptp4l401ktimersoftd/321:10:263
14211994028,10cyclictest41-21ksoftirqd/300:10:213
14211994028,10cyclictest41-21ksoftirqd/300:10:213
1421199401,37cyclictest9006-21turbostat.cron23:20:003
14210994031,7cyclictest33-21ksoftirqd/222:16:462
1420999405,6cyclictest25-21ksoftirqd/123:35:251
1420999404,7cyclictest25-21ksoftirqd/120:30:251
1420999401,5cyclictest25-21ksoftirqd/123:06:431
14209994014,5cyclictest25-21ksoftirqd/122:50:381
14209994014,5cyclictest25-21ksoftirqd/122:29:331
138491400,0ptp4l401ktimersoftd/320:39:533
1421099396,31cyclictest23912-21awk19:30:002
1420999394,6cyclictest25-21ksoftirqd/123:55:211
1420999394,5cyclictest25-21ksoftirqd/121:15:261
1420999393,6cyclictest25-21ksoftirqd/122:45:011
1420999392,5cyclictest25-21ksoftirqd/120:05:221
1420999392,3cyclictest25-21ksoftirqd/121:05:171
1420999391,7cyclictest25-21ksoftirqd/121:00:241
14209993915,7cyclictest25-21ksoftirqd/100:28:311
50798380,4rtkit-daemon18872-21/usr/sbin/munin20:25:150
14211993832,4cyclictest41-21ksoftirqd/319:38:153
14211993832,4cyclictest41-21ksoftirqd/319:20:543
14210993833,3cyclictest33-21ksoftirqd/219:20:002
1420999387,2cyclictest25-21ksoftirqd/121:45:531
1420999383,7cyclictest25-21ksoftirqd/122:30:221
1420999382,6cyclictest25-21ksoftirqd/100:15:001
1420999382,6cyclictest25-21ksoftirqd/100:15:001
14209993812,5cyclictest25-21ksoftirqd/119:18:541
14211993731,4cyclictest41-21ksoftirqd/322:30:093
14211993731,4cyclictest41-21ksoftirqd/320:57:263
14210993731,4cyclictest33-21ksoftirqd/200:17:002
14210993730,5cyclictest33-21ksoftirqd/221:47:032
14210993730,5cyclictest33-21ksoftirqd/220:13:522
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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