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2026-05-22 - 18:56
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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 May 22, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
249442229173,45sleep20-21swapper/219:09:592
139491208164,33phc2sys0-21swapper/319:09:543
247092203170,22sleep00-21swapper/019:06:550
246152197164,22sleep10-21swapper/119:05:471
139391670,1ptp4l401ktimersoftd/323:03:233
279602560,2sleep20-21swapper/222:35:252
139391550,1ptp4l401ktimersoftd/321:35:233
139391550,1ptp4l401ktimersoftd/320:42:383
139391550,1ptp4l401ktimersoftd/320:35:213
13372530,2sleep01339-21sendmail_mailst19:25:240
139391490,1ptp4l7394-21apt-get19:40:113
139391480,1ptp4l401ktimersoftd/319:24:223
139391470,1ptp4l401ktimersoftd/323:52:113
139391460,1ptp4l401ktimersoftd/323:12:233
25241994541,2cyclictest41-21ksoftirqd/321:15:003
139391430,0ptp4l401ktimersoftd/321:45:083
139391420,0ptp4l401ktimersoftd/322:53:003
139391420,0ptp4l401ktimersoftd/322:05:243
139391420,0ptp4l401ktimersoftd/322:05:243
139391420,0ptp4l401ktimersoftd/320:15:313
139391420,0ptp4l401ktimersoftd/320:15:313
139391420,0ptp4l401ktimersoftd/320:00:283
139391410,0ptp4l401ktimersoftd/300:33:093
25241994029,9cyclictest41-21ksoftirqd/323:25:163
25241993934,3cyclictest41-21ksoftirqd/323:00:003
25241993927,10cyclictest41-21ksoftirqd/321:30:273
25241993833,3cyclictest41-21ksoftirqd/322:40:013
25241993833,3cyclictest1300-21snmpd00:26:013
139391380,0ptp4l401ktimersoftd/323:15:113
25241993733,2cyclictest41-21ksoftirqd/323:50:003
25241993731,4cyclictest41-21ksoftirqd/321:29:383
25241993731,3cyclictest10359-21irqrtprio22:00:183
25241993731,3cyclictest10359-21irqrtprio22:00:173
25240993731,4cyclictest33-21ksoftirqd/222:04:492
25240993731,4cyclictest33-21ksoftirqd/222:04:492
25240993730,5cyclictest33-21ksoftirqd/200:02:462
25239993733,2cyclictest25-21ksoftirqd/123:29:591
25239993732,3cyclictest25-21ksoftirqd/123:09:591
25239993731,4cyclictest25-21ksoftirqd/120:22:341
25239993731,4cyclictest25-21ksoftirqd/100:36:111
25238993730,4cyclictest9-21ksoftirqd/000:19:300
139391370,0ptp4l401ktimersoftd/322:45:153
25240993630,4cyclictest33-21ksoftirqd/221:12:162
25239993630,4cyclictest25-21ksoftirqd/122:07:121
25239993630,4cyclictest25-21ksoftirqd/122:07:121
25238993630,4cyclictest9-21ksoftirqd/000:12:320
25241993532,2cyclictest41-21ksoftirqd/321:05:003
25241993531,2cyclictest41-21ksoftirqd/322:10:253
25241993530,3cyclictest41-21ksoftirqd/322:30:243
25241993530,3cyclictest41-21ksoftirqd/320:25:003
25241993530,3cyclictest41-21ksoftirqd/319:50:043
25241993529,4cyclictest41-21ksoftirqd/321:58:193
25241993529,4cyclictest41-21ksoftirqd/300:04:443
25240993529,4cyclictest33-21ksoftirqd/222:55:482
25240993529,4cyclictest33-21ksoftirqd/222:40:022
25240993529,4cyclictest33-21ksoftirqd/221:46:062
25240993528,5cyclictest33-21ksoftirqd/200:24:002
25240993528,4cyclictest33-21ksoftirqd/220:40:042
25240993528,4cyclictest33-21ksoftirqd/220:08:412
25239993531,2cyclictest25-21ksoftirqd/119:10:141
25239993529,4cyclictest25-21ksoftirqd/123:58:211
25239993529,4cyclictest25-21ksoftirqd/123:58:211
25239993529,4cyclictest25-21ksoftirqd/122:21:481
25239993529,4cyclictest25-21ksoftirqd/121:13:171
25239993529,4cyclictest25-21ksoftirqd/120:59:561
25239993529,4cyclictest25-21ksoftirqd/119:52:291
25239993529,4cyclictest25-21ksoftirqd/119:29:261
25238993530,3cyclictest9-21ksoftirqd/000:00:100
25238993529,4cyclictest9-21ksoftirqd/022:11:160
25238993529,4cyclictest9-21ksoftirqd/021:41:270
25238993529,4cyclictest9-21ksoftirqd/019:31:220
2524199347,2cyclictest41-21ksoftirqd/323:20:263
25241993430,3cyclictest41-21ksoftirqd/320:15:003
25241993430,2cyclictest41-21ksoftirqd/320:50:133
25241993429,3cyclictest41-21ksoftirqd/321:07:073
25241993428,4cyclictest41-21ksoftirqd/320:25:403
25241993428,3cyclictest41-21ksoftirqd/321:50:283
25240993429,3cyclictest23127-21uname23:35:002
25240993428,4cyclictest33-21ksoftirqd/223:20:592
25240993428,4cyclictest33-21ksoftirqd/220:25:082
25240993428,4cyclictest33-21ksoftirqd/219:30:402
25239993428,4cyclictest25-21ksoftirqd/123:53:141
25239993428,4cyclictest25-21ksoftirqd/123:48:491
25239993428,4cyclictest25-21ksoftirqd/122:52:571
25239993428,4cyclictest25-21ksoftirqd/120:27:271
25239993427,5cyclictest25-21ksoftirqd/121:53:521
25238993429,3cyclictest9-21ksoftirqd/021:57:130
25238993428,4cyclictest9-21ksoftirqd/023:23:140
25238993428,4cyclictest9-21ksoftirqd/021:16:360
25238993428,4cyclictest9-21ksoftirqd/020:43:550
25238993428,4cyclictest9-21ksoftirqd/020:39:220
25238993428,4cyclictest9-21ksoftirqd/020:13:420
852423327,2sleep233-21ksoftirqd/221:55:272
25241993330,2cyclictest41-21ksoftirqd/322:25:203
25241993329,3cyclictest41-21ksoftirqd/319:30:113
25241993329,2cyclictest41-21ksoftirqd/319:30:003
25241993327,4cyclictest41-21ksoftirqd/322:44:373
25241993327,4cyclictest41-21ksoftirqd/319:16:323
25241993327,4cyclictest41-21ksoftirqd/319:11:313
2524199331,2cyclictest121rcu_preempt00:35:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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