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2025-11-20 - 18:39
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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 Thu Nov 20, 2025 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191670,4ptp4l14062-21irqrtprio08:10:193
2847191640,1ptp4l241ktimersoftd/112:16:061
2847191630,4ptp4l0-21swapper/209:11:242
2847191620,4ptp4l0-21swapper/110:54:271
2847191610,5ptp4l0-21swapper/209:00:272
2847191600,5ptp4l0-21swapper/208:20:142
2847191600,5ptp4l0-21swapper/109:35:181
51572590,6sleep30-21swapper/307:50:223
2847191590,4ptp4l0-21swapper/009:40:200
2847191580,4ptp4l0-21swapper/209:55:292
2847191580,3ptp4l0-21swapper/211:11:332
2847191580,1ptp4l0-21swapper/110:37:161
255732580,6sleep31783899cyclictest07:25:183
2847191570,5ptp4l0-21swapper/308:30:123
2847191570,4ptp4l0-21swapper/209:25:162
2847191570,3ptp4l25232-21apt-get08:35:163
2847191560,9ptp4l0-21swapper/208:52:582
2847191560,4ptp4l0-21swapper/108:31:311
2847191560,3ptp4l0-21swapper/011:05:120
2847191560,3ptp4l0-21swapper/007:54:560
2847191550,4ptp4l16044-21tune2fs08:15:193
2847191550,4ptp4l0-21swapper/210:45:332
2847191550,3ptp4l0-21swapper/008:03:500
2847191540,4ptp4l0-21swapper/307:38:073
2847191540,4ptp4l0-21swapper/210:23:422
2847191540,3ptp4l0-21swapper/307:55:313
2847191530,4ptp4l0-21swapper/308:07:373
2847191530,4ptp4l0-21swapper/212:10:062
2847191530,4ptp4l0-21swapper/211:18:232
2847191530,4ptp4l0-21swapper/208:27:492
2847191530,4ptp4l0-21swapper/207:47:272
2847191530,4ptp4l0-21swapper/207:28:412
2847191530,12ptp4l17167-21uptime07:05:270
2847191520,4ptp4l0-21swapper/212:06:232
2847191520,4ptp4l0-21swapper/211:53:512
2847191520,4ptp4l0-21swapper/210:50:302
2847191520,4ptp4l0-21swapper/210:43:122
2847191520,4ptp4l0-21swapper/209:36:402
2847191520,4ptp4l0-21swapper/209:19:102
2847191520,3ptp4l0-21swapper/308:54:253
2847191520,3ptp4l0-21swapper/208:45:252
2847191520,2ptp4l0-21swapper/110:12:031
53582510,5sleep20-21swapper/207:50:242
2847191510,4ptp4l0-21swapper/310:01:463
2847191510,4ptp4l0-21swapper/309:05:383
2847191510,4ptp4l0-21swapper/208:11:292
2847191510,4ptp4l0-21swapper/112:13:441
2847191510,4ptp4l0-21swapper/111:07:471
2847191510,3ptp4l0-21swapper/209:49:102
2847191510,12ptp4l0-21swapper/211:04:432
1783699512,47cyclictest0-21swapper/111:30:581
2847191500,8ptp4l0-21swapper/209:20:162
2847191500,4ptp4l0-21swapper/311:46:153
2847191500,4ptp4l0-21swapper/210:57:082
2847191500,4ptp4l0-21swapper/208:40:242
2847191500,4ptp4l0-21swapper/108:25:091
2847191500,3ptp4l0-21swapper/209:41:342
2847191500,3ptp4l0-21swapper/209:30:132
2847191500,3ptp4l0-21swapper/111:38:571
2847191490,4ptp4l0-21swapper/211:07:072
2847191490,4ptp4l0-21swapper/111:01:091
2847191490,3ptp4l0-21swapper/110:09:251
2847191490,3ptp4l0-21swapper/010:43:530
2847191480,13ptp4l451-21gdbus07:35:251
2847191480,13ptp4l0-21swapper/207:40:142
2847191470,4ptp4l0-21swapper/311:57:573
2847191470,4ptp4l0-21swapper/311:57:573
2847191470,4ptp4l0-21swapper/210:06:542
2847191470,3ptp4l0-21swapper/212:20:582
2847191460,4ptp4l28643-21ls09:50:211
2847191460,4ptp4l0-21swapper/309:56:453
2847191460,4ptp4l0-21swapper/010:45:210
2847191460,3ptp4l0-21swapper/311:30:213
2847191460,3ptp4l0-21swapper/011:34:570
2847191460,13ptp4l0-21swapper/211:30:062
2847191450,9ptp4l0-21swapper/212:04:462
2847191450,9ptp4l0-21swapper/107:25:261
2847191450,4ptp4l29869-21apt-get08:45:123
2847191450,2ptp4l28115-21kworker/2:007:18:442
2847191440,9ptp4l0-21swapper/209:50:002
2847191440,9ptp4l0-21swapper/108:10:171
2847191440,9ptp4l0-21swapper/007:38:020
2847191440,8ptp4l0-21swapper/107:10:011
2847191440,4ptp4l0-21swapper/310:10:513
2847191440,3ptp4l0-21swapper/108:24:131
2847191440,11ptp4l0-21swapper/111:11:171
2847191440,10ptp4l0-21swapper/309:42:193
2847191440,10ptp4l0-21swapper/010:28:150
2847191430,9ptp4l0-21swapper/212:26:342
2847191430,9ptp4l0-21swapper/008:25:280
2847191430,5ptp4l31841-21apt-get07:40:133
2847191430,5ptp4l31446-21/usr/sbin/munin09:55:271
2847191430,5ptp4l16541-21strings07:05:211
2847191430,5ptp4l0-21swapper/112:00:151
2847191430,4ptp4l2147-21apt-get08:55:141
2847191430,4ptp4l19383-21meminfo09:30:211
2847191430,4ptp4l17873-21apt-get07:10:132
2847191430,3ptp4l0-21swapper/307:24:593
2847191430,2ptp4l6346-21kworker/2:211:47:202
2847191420,9ptp4l0-21swapper/008:11:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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