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2025-12-12 - 06:00
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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 rackdslot1.osadl.org (updated Fri Dec 12, 2025 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191690,4ptp4l0-21swapper/119:20:251
174052690,4sleep00-21swapper/021:00:310
2847191660,3ptp4l10451-21meminfo21:55:261
2923799637,39cyclictest2847191ptp4l00:15:563
2847191630,4ptp4l29186-21iostat_ios23:45:201
2847191620,4ptp4l0-21swapper/219:05:082
2847191600,3ptp4l32664-21iostat_ios21:35:171
29234995825,7cyclictest9-21ksoftirqd/020:19:510
2847191580,5ptp4l0-21swapper/122:30:331
2847191560,3ptp4l0-21swapper/221:16:232
2847191560,3ptp4l0-21swapper/122:20:161
2847191560,3ptp4l0-21swapper/120:00:131
2847191560,3ptp4l0-21swapper/119:31:101
2847191560,3ptp4l0-21swapper/100:14:011
2847191550,4ptp4l0-21swapper/120:43:571
2847191550,4ptp4l0-21swapper/120:38:451
29237995424,17cyclictest41-21ksoftirqd/321:40:193
2847191540,17ptp4l5779-21sshd19:27:221
2847191540,12ptp4l0-21swapper/120:07:361
102142540,5sleep10-21swapper/119:35:271
29236995318,9cyclictest33-21ksoftirqd/219:58:262
2847191530,4ptp4l0-21swapper/023:37:190
2847191530,3ptp4l0-21swapper/022:45:500
29234995222,4cyclictest9-21ksoftirqd/019:55:220
2847191520,4ptp4l0-21swapper/200:39:012
2847191520,4ptp4l0-21swapper/123:19:091
2847191520,4ptp4l0-21swapper/020:06:410
2847191520,3ptp4l0-21swapper/100:18:451
2847191520,3ptp4l0-21swapper/023:47:490
2923699514,2cyclictest121rcu_preempt22:40:192
29234995124,9cyclictest9-21ksoftirqd/023:15:520
2847191510,4ptp4l0-21swapper/319:06:003
2847191510,4ptp4l0-21swapper/122:17:571
2847191510,4ptp4l0-21swapper/021:29:500
2847191510,3ptp4l0-21swapper/023:50:270
2847191510,3ptp4l0-21swapper/023:40:130
29237995027,11cyclictest41-21ksoftirqd/322:03:163
29234995020,3cyclictest9-21ksoftirqd/019:42:240
2847191500,5ptp4l0-21swapper/019:07:130
2847191500,4ptp4l0-21swapper/020:51:310
2847191500,4ptp4l0-21swapper/020:21:410
2847191500,4ptp4l0-21swapper/019:27:530
2847191500,3ptp4l0-21swapper/322:33:053
2847191500,3ptp4l0-21swapper/122:25:571
2847191500,3ptp4l0-21swapper/022:08:010
2847191500,16ptp4l0-21swapper/219:10:012
29234994925,8cyclictest9-21ksoftirqd/000:39:070
29234994920,4cyclictest9-21ksoftirqd/023:20:320
29234994919,7cyclictest9-21ksoftirqd/022:00:000
29234994918,6cyclictest9-21ksoftirqd/022:55:250
2847191490,4ptp4l0-21swapper/123:26:551
2847191490,4ptp4l0-21swapper/023:08:520
2847191490,4ptp4l0-21swapper/021:42:340
2847191490,4ptp4l0-21swapper/000:21:240
2847191490,3ptp4l0-21swapper/000:10:580
29234994830,8cyclictest9-21ksoftirqd/021:50:170
29234994824,5cyclictest9-21ksoftirqd/021:38:590
29234994820,4cyclictest9-21ksoftirqd/022:30:070
29234994819,5cyclictest9-21ksoftirqd/022:15:190
2847191480,3ptp4l0-21swapper/321:04:123
2847191480,3ptp4l0-21swapper/119:53:421
29237994726,5cyclictest41-21ksoftirqd/322:50:313
29234994719,3cyclictest9-21ksoftirqd/023:10:530
29234994717,3cyclictest9-21ksoftirqd/020:25:360
29234994715,4cyclictest9-21ksoftirqd/021:07:420
2847191470,4ptp4l0-21swapper/121:27:211
2847191470,3ptp4l0-21swapper/121:50:181
2847191470,2ptp4l0-21swapper/022:36:050
2847191470,12ptp4l0-21swapper/222:15:062
29234994628,8cyclictest9-21ksoftirqd/000:20:010
29234994627,8cyclictest9-21ksoftirqd/021:45:200
29234994626,8cyclictest9-21ksoftirqd/020:00:250
29234994618,7cyclictest9-21ksoftirqd/023:34:280
2847191460,4ptp4l0-21swapper/123:57:581
2847191460,3ptp4l0-21swapper/122:43:081
2847191460,2ptp4l121rcu_preempt22:00:301
29237994531,6cyclictest41-21ksoftirqd/300:20:193
2923699456,6cyclictest33-21ksoftirqd/222:37:202
2923699455,3cyclictest33-21ksoftirqd/200:25:312
29234994527,8cyclictest9-21ksoftirqd/020:45:270
29234994518,3cyclictest9-21ksoftirqd/020:42:240
29234994517,3cyclictest9-21ksoftirqd/023:04:230
29234994516,6cyclictest9-21ksoftirqd/019:50:240
29234994516,5cyclictest9-21ksoftirqd/020:30:160
29234994515,4cyclictest9-21ksoftirqd/019:30:230
29234994514,3cyclictest9-21ksoftirqd/019:21:220
2849491450,4getstats0-21swapper/000:09:260
2847191450,5ptp4l0-21swapper/222:20:132
2847191450,5ptp4l0-21swapper/200:10:152
2847191450,4ptp4l11819-21apt-get22:00:142
2847191450,3ptp4l0-21swapper/119:17:291
29237994422,14cyclictest41-21ksoftirqd/319:25:263
2923699446,3cyclictest121rcu_preempt00:35:002
29236994419,3cyclictest33-21ksoftirqd/221:21:422
29236994416,3cyclictest33-21ksoftirqd/219:26:002
29234994417,8cyclictest9-21ksoftirqd/022:42:330
29234994416,4cyclictest9-21ksoftirqd/021:14:030
29234994415,3cyclictest9-21ksoftirqd/022:50:180
29234994413,3cyclictest9-21ksoftirqd/019:45:410
2847191440,9ptp4l0-21swapper/223:17:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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