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2026-03-20 - 21:06
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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 Fri Mar 20, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591229162,22phc2sys0-21swapper/307:05:503
251782201166,23sleep20-21swapper/207:07:292
231652201166,23sleep00-21swapper/007:05:110
250372198166,21sleep10-21swapper/107:05:401
1049321640,7sleep32567699cyclictest07:43:363
2714221530,5sleep32567699cyclictest07:10:243
1649021500,6sleep02567399cyclictest12:15:200
260332870,1sleep00-21swapper/012:35:180
53062570,2sleep20-21swapper/211:54:592
37032570,6sleep32567699cyclictest07:30:133
138491540,1ptp4l401ktimersoftd/308:39:363
2567499531,10cyclictest30355-21latency_hist09:30:011
138491510,0ptp4l401ktimersoftd/311:54:273
138491480,1ptp4l401ktimersoftd/309:53:173
25675994526,3cyclictest33-21ksoftirqd/212:10:122
2567599450,2cyclictest0-21swapper/211:00:232
2567599440,2cyclictest0-21swapper/211:10:232
2567499441,40cyclictest27696-21apt10:30:011
25676994330,11cyclictest41-21ksoftirqd/311:25:013
25675994316,25cyclictest0-21swapper/208:35:332
2567499431,13cyclictest28617-21diskstats07:15:141
2567499430,7cyclictest23183-21diskstats11:25:161
138491410,0ptp4l401ktimersoftd/307:35:193
2567599400,38cyclictest4476-21/usr/sbin/munin10:45:232
25674994035,3cyclictest25-21ksoftirqd/107:40:001
138491400,0ptp4l401ktimersoftd/312:31:093
138491400,0ptp4l401ktimersoftd/310:15:463
2567499390,8cyclictest31877-21memory08:25:211
138491390,0ptp4l401ktimersoftd/308:25:053
25674993831,4cyclictest25-21ksoftirqd/109:55:091
2567499380,8cyclictest25557-21df_inode12:35:141
25676993731,4cyclictest41-21ksoftirqd/309:50:003
25676993731,3cyclictest41-21ksoftirqd/307:50:013
25675993731,4cyclictest33-21ksoftirqd/212:19:562
25675993731,4cyclictest33-21ksoftirqd/207:21:492
25674993731,4cyclictest25-21ksoftirqd/111:44:201
25673993732,3cyclictest9-21ksoftirqd/010:00:010
25673993731,4cyclictest9-21ksoftirqd/012:09:590
25673993730,5cyclictest9-21ksoftirqd/010:12:490
138491370,0ptp4l401ktimersoftd/311:15:233
25676993631,3cyclictest41-21ksoftirqd/309:14:253
25676993630,4cyclictest41-21ksoftirqd/311:45:033
25676993630,4cyclictest41-21ksoftirqd/311:34:033
25676993630,4cyclictest41-21ksoftirqd/311:04:033
25675993630,4cyclictest33-21ksoftirqd/212:22:572
25675993630,4cyclictest33-21ksoftirqd/210:15:442
25675993630,4cyclictest33-21ksoftirqd/209:31:032
25675993630,4cyclictest33-21ksoftirqd/208:14:322
25674993630,4cyclictest8025-21cron08:45:001
25674993630,4cyclictest25-21ksoftirqd/111:49:221
25674993630,4cyclictest25-21ksoftirqd/110:44:351
25674993630,4cyclictest25-21ksoftirqd/108:32:371
25673993630,4cyclictest9-21ksoftirqd/010:46:390
25673993630,4cyclictest9-21ksoftirqd/009:54:190
25676993529,4cyclictest41-21ksoftirqd/312:10:333
25676993529,4cyclictest41-21ksoftirqd/311:05:313
25676993529,4cyclictest41-21ksoftirqd/310:29:333
25676993529,4cyclictest41-21ksoftirqd/310:08:183
25676993529,4cyclictest41-21ksoftirqd/309:56:233
25675993530,3cyclictest24842-21cron12:34:592
25675993529,4cyclictest33-21ksoftirqd/212:36:532
25675993529,4cyclictest33-21ksoftirqd/208:17:332
25675993529,4cyclictest33-21ksoftirqd/207:27:152
25675993528,4cyclictest33-21ksoftirqd/212:25:002
25674993529,4cyclictest25-21ksoftirqd/112:21:551
25674993529,4cyclictest25-21ksoftirqd/110:48:201
25674993529,4cyclictest25-21ksoftirqd/107:30:351
25674993529,4cyclictest25-21ksoftirqd/107:14:301
25674993528,4cyclictest25-21ksoftirqd/108:05:091
25674993527,6cyclictest25-21ksoftirqd/112:15:001
25673993529,4cyclictest9-21ksoftirqd/009:37:470
25673993529,4cyclictest9-21ksoftirqd/009:26:110
25673993529,4cyclictest9-21ksoftirqd/008:28:510
25673993529,4cyclictest9-21ksoftirqd/008:14:270
25673993529,4cyclictest9-21ksoftirqd/007:52:560
25673993528,5cyclictest9-21ksoftirqd/008:31:590
25676993429,3cyclictest41-21ksoftirqd/311:37:123
25676993429,3cyclictest41-21ksoftirqd/310:10:283
25676993429,3cyclictest41-21ksoftirqd/308:00:003
25676993428,4cyclictest41-21ksoftirqd/312:19:123
2567599345,28cyclictest0-21swapper/209:25:242
25675993430,3cyclictest33-21ksoftirqd/209:00:152
25675993429,3cyclictest33-21ksoftirqd/212:03:072
25675993429,3cyclictest33-21ksoftirqd/208:25:002
25675993428,4cyclictest33-21ksoftirqd/211:41:322
25675993428,4cyclictest33-21ksoftirqd/210:32:532
25675993428,4cyclictest33-21ksoftirqd/209:59:472
25675993428,4cyclictest33-21ksoftirqd/209:43:142
25675993428,4cyclictest33-21ksoftirqd/209:37:042
25675993428,4cyclictest33-21ksoftirqd/208:32:142
25675993428,3cyclictest33-21ksoftirqd/207:10:262
25675993427,5cyclictest33-21ksoftirqd/211:08:342
25674993429,3cyclictest25-21ksoftirqd/108:03:001
25674993428,4cyclictest25-21ksoftirqd/110:55:461
25674993427,4cyclictest25-21ksoftirqd/110:36:171
25673993428,4cyclictest9-21ksoftirqd/012:32:400
25673993428,4cyclictest9-21ksoftirqd/010:28:530
25673993428,4cyclictest9-21ksoftirqd/009:46:290
25673993428,4cyclictest9-21ksoftirqd/009:14:040
25673993428,4cyclictest9-21ksoftirqd/008:54:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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