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2026-09-08 - 06:04
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Tue Sep 08, 2026 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1758121430,7sleep3566999cyclictest20:45:133
134491880,4ptp4l0-21swapper/020:40:190
258162770,4sleep00-21swapper/021:00:270
134491680,23ptp4l20358-21/usr/sbin/munin19:40:170
134491640,3ptp4l0-21swapper/020:20:150
134491630,4ptp4l0-21swapper/121:55:281
134491610,4ptp4l17791-21perl20:45:151
134491610,16ptp4l0-21swapper/100:30:011
134491600,20ptp4l13728-21ntp_states19:25:232
134491590,3ptp4l32071-21diskstats23:35:140
134491590,3ptp4l0-21swapper/119:50:191
134491580,4ptp4l0-21swapper/200:09:102
134491580,4ptp4l0-21swapper/122:30:141
134491570,4ptp4l0-21swapper/123:05:201
134491570,4ptp4l0-21swapper/120:15:231
134491570,3ptp4l0-21swapper/320:22:213
270442560,5sleep00-21swapper/022:15:120
134491560,4ptp4l0-21swapper/320:35:173
134491560,4ptp4l0-21swapper/319:53:013
134491560,4ptp4l0-21swapper/119:30:201
134491560,3ptp4l0-21swapper/123:50:201
134491550,4ptp4l0-21swapper/321:25:313
134491550,3ptp4l0-21swapper/221:12:562
75392540,6sleep00-21swapper/023:50:290
134491540,8ptp4l0-21swapper/222:57:152
134491540,5ptp4l4990-21grep19:05:271
134491540,4ptp4l0-21swapper/319:25:283
134491540,4ptp4l0-21swapper/300:37:513
134491530,5ptp4l0-21swapper/222:43:592
134491530,4ptp4l0-21swapper/321:47:243
134491530,4ptp4l0-21swapper/019:22:400
276552520,5sleep10-21swapper/121:05:211
134491520,4ptp4l0-21swapper/221:26:212
134491520,4ptp4l0-21swapper/221:04:572
134491520,15ptp4l0-21swapper/000:25:280
134491510,9ptp4l0-21swapper/219:15:152
134491510,4ptp4l0-21swapper/321:02:133
134491510,4ptp4l0-21swapper/320:54:593
134491510,4ptp4l0-21swapper/222:33:012
134491510,4ptp4l0-21swapper/220:54:532
134491510,4ptp4l0-21swapper/123:19:431
134491510,4ptp4l0-21swapper/019:35:110
134491500,9ptp4l3894-21iostat19:05:170
134491500,4ptp4l0-21swapper/320:58:263
134491500,4ptp4l0-21swapper/222:38:172
134491500,4ptp4l0-21swapper/221:59:472
134491500,4ptp4l0-21swapper/220:08:012
134491500,4ptp4l0-21swapper/200:22:062
134491500,4ptp4l0-21swapper/021:46:030
134491500,3ptp4l0-21swapper/321:54:103
134491500,3ptp4l0-21swapper/022:26:120
134491500,10ptp4l0-21swapper/000:35:150
134491490,5ptp4l0-21swapper/121:40:151
134491490,4ptp4l0-21swapper/322:40:493
134491490,4ptp4l0-21swapper/321:36:523
134491490,4ptp4l0-21swapper/122:09:271
134491490,3ptp4l14907-21apt-get19:30:143
134491490,3ptp4l0-21swapper/022:30:230
134491490,12ptp4l0-21swapper/120:05:181
134491480,4ptp4l0-21swapper/323:59:083
134491480,4ptp4l0-21swapper/322:11:593
134491480,4ptp4l0-21swapper/223:56:032
134491480,4ptp4l0-21swapper/223:35:002
134491480,4ptp4l0-21swapper/221:23:092
134491480,4ptp4l0-21swapper/023:56:120
134491480,4ptp4l0-21swapper/022:43:370
134491480,4ptp4l0-21swapper/022:07:520
134491480,4ptp4l0-21swapper/019:15:410
134491480,4ptp4l0-21swapper/000:30:590
134491480,4ptp4l0-21swapper/000:11:360
134491480,3ptp4l0-21swapper/220:38:342
134491480,3ptp4l0-21swapper/021:59:070
134491480,3ptp4l0-21swapper/019:29:380
134491470,4ptp4l0-21swapper/320:25:213
134491470,4ptp4l0-21swapper/220:12:532
134491470,4ptp4l0-21swapper/100:39:171
134491470,3ptp4l0-21swapper/200:16:402
134491470,3ptp4l0-21swapper/023:45:460
134491470,3ptp4l0-21swapper/019:10:090
134491470,3ptp4l0-21swapper/000:03:210
134491460,9ptp4l0-21swapper/220:55:582
134491460,4ptp4l16910-21apt-get20:45:030
134491460,3ptp4l0-21swapper/021:33:060
134491450,4ptp4l8530-21apt-get21:35:131
134491450,4ptp4l0-21swapper/319:08:593
134491450,3ptp4l0-21swapper/220:00:252
134491450,3ptp4l0-21swapper/200:28:172
134491450,3ptp4l0-21swapper/119:45:271
134491450,3ptp4l0-21swapper/100:17:061
134491450,3ptp4l0-21swapper/023:33:570
134491440,5ptp4l566799cyclictest22:45:191
134491440,4ptp4l0-21swapper/223:07:462
134491440,3ptp4l231rcuc/121:50:151
134491440,3ptp4l0-21swapper/122:00:591
134491430,5ptp4l11362-21ntp_states20:30:230
134491430,5ptp4l0-21swapper/021:10:270
134491430,4ptp4l26461-21apt-get19:55:132
134491430,4ptp4l25390-21apt-get00:30:161
134491430,4ptp4l22743-21iostat_ios20:55:170
134491430,4ptp4l0-21swapper/319:55:123
134491430,3ptp4l0-21swapper/122:13:221
134491430,3ptp4l0-21swapper/120:25:191
134491430,11ptp4l0-21swapper/221:52:552
134491420,9ptp4l0-21swapper/219:22:352
134491420,9ptp4l0-21swapper/200:35:312
134491420,8ptp4l0-21swapper/320:34:173
134491420,7ptp4l0-21swapper/122:19:171
134491420,6ptp4l0-21swapper/019:50:290
134491420,5ptp4l0-21swapper/320:10:233
134491420,5ptp4l0-21swapper/319:35:163
134491420,5ptp4l0-21swapper/219:08:372
134491420,5ptp4l0-21swapper/121:25:221
134491420,5ptp4l0-21swapper/119:35:181
134491420,4ptp4l31643-21iostat20:05:190
134491420,4ptp4l306-21ntp_states21:15:230
134491420,4ptp4l29355-21apt-get21:10:123
134491420,4ptp4l0-21swapper/122:23:051
134491420,3ptp4l2318-21gnome-shell21:22:593
134491420,3ptp4l21164-21ls20:50:250
134491420,3ptp4l13465-21apt-get00:05:110
5667994136,3cyclictest25-21ksoftirqd/100:05:011
134491410,8ptp4l33-21ksoftirqd/200:00:282
134491410,5ptp4l0-21swapper/323:10:323
134491410,5ptp4l0-21swapper/320:00:123
134491410,5ptp4l0-21swapper/319:20:143
134491410,4ptp4l566999cyclictest19:49:153
134491410,4ptp4l32563-21memory22:25:211
134491410,4ptp4l30414-21meminfo23:30:201
134491410,4ptp4l26761-21df_inode19:55:150
134491410,4ptp4l15394-21apt-get23:00:111
134491410,4ptp4l0-21swapper/220:17:472
134491410,4ptp4l0-21swapper/123:55:131
134491410,4ptp4l0-21swapper/021:35:130
134491410,3ptp4l9516-21ls20:25:270
134491410,3ptp4l3327-21apt-get20:15:133
134491410,3ptp4l31653-21apt-get21:15:123
134491410,3ptp4l25-21ksoftirqd/100:10:161
134491410,3ptp4l0-21swapper/319:40:273
134491410,3ptp4l0-21swapper/223:28:542
134491410,3ptp4l0-21swapper/123:40:151
83922400,6sleep28396-21cron23:55:002
5667994035,3cyclictest25-21ksoftirqd/119:10:261
134491400,8ptp4l0-21swapper/223:01:422
134491400,5ptp4l5144-21grep23:45:233
134491400,5ptp4l22117-21grep00:20:281
134491400,5ptp4l0-21swapper/220:25:142
134491400,5ptp4l0-21swapper/219:30:162
134491400,5ptp4l0-21swapper/022:50:170
134491400,5ptp4l0-21swapper/022:20:150
134491400,5ptp4l0-21swapper/020:35:190
134491400,4ptp4l25134-21hddtemp_smartct22:10:180
134491400,4ptp4l17720-21/usr/sbin/munin21:55:233
134491400,4ptp4l14483-21ls00:05:201
134491400,4ptp4l13648-21iostat_ios22:55:181
134491400,4ptp4l0-21swapper/322:05:273
134491400,4ptp4l0-21swapper/221:45:382
134491400,4ptp4l0-21swapper/221:30:392
134491400,4ptp4l0-21swapper/220:40:232
134491400,4ptp4l0-21swapper/219:53:372
134491400,4ptp4l0-21swapper/123:25:291
134491400,4ptp4l0-21swapper/122:35:211
134491400,4ptp4l0-21swapper/120:31:351
134491400,4ptp4l0-21swapper/119:55:191
134491400,4ptp4l0-21swapper/023:05:290
134491400,4ptp4l0-21swapper/023:00:200
134491400,4ptp4l0-21swapper/019:48:090
134491400,3ptp4l9469-21ls21:35:212
134491400,3ptp4l23122-21meminfo20:55:191
134491400,3ptp4l20998-21memory22:00:190
134491400,3ptp4l18140-21ls19:35:202
134491400,3ptp4l1503-21apt-get22:30:133
134491400,3ptp4l0-21swapper/123:10:081
134491400,3ptp4l0-21swapper/019:30:190
134491390,5ptp4l0-21swapper/023:20:000
134491390,4ptp4l212-21systemd-journal19:30:011
134491390,4ptp4l19206-21meminfo00:15:210
134491390,4ptp4l16181-21cut21:50:180
134491390,4ptp4l0-21swapper/322:27:153
134491390,4ptp4l0-21swapper/322:17:393
134491390,4ptp4l0-21swapper/321:42:433
134491390,4ptp4l0-21swapper/321:30:063
134491390,4ptp4l0-21swapper/321:09:393
134491390,4ptp4l0-21swapper/320:40:173
134491390,4ptp4l0-21swapper/320:05:233
134491390,4ptp4l0-21swapper/319:15:123
134491390,4ptp4l0-21swapper/222:45:482
134491390,4ptp4l0-21swapper/222:29:432
134491390,4ptp4l0-21swapper/222:15:582
134491390,4ptp4l0-21swapper/222:13:342
134491390,4ptp4l0-21swapper/222:05:282
134491390,4ptp4l0-21swapper/222:03:282
134491390,4ptp4l0-21swapper/221:15:132
134491390,4ptp4l0-21swapper/221:06:112
134491390,4ptp4l0-21swapper/220:30:212
134491390,4ptp4l0-21swapper/219:45:462
134491390,4ptp4l0-21swapper/123:35:501
134491390,4ptp4l0-21swapper/122:40:291
134491390,4ptp4l0-21swapper/121:30:161
134491390,4ptp4l0-21swapper/121:16:141
134491390,4ptp4l0-21swapper/121:00:231
134491390,4ptp4l0-21swapper/120:35:211
134491390,4ptp4l0-21swapper/120:10:141
134491390,4ptp4l0-21swapper/119:42:381
134491390,4ptp4l0-21swapper/022:35:230
134491390,4ptp4l0-21swapper/021:43:390
134491390,4ptp4l0-21swapper/020:15:590
134491390,4ptp4l0-21swapper/020:02:290
134491390,4ptp4l0-21swapper/000:20:160
134491390,3ptp4l29926-21iostat_ios21:10:181
134491390,3ptp4l19968-21df_inode20:50:131
134491390,3ptp4l0-21swapper/222:51:392
134491390,3ptp4l0-21swapper/219:10:032
134491390,2ptp4l2325-21llvmpipe-200:29:593
5669993833,3cyclictest41-21ksoftirqd/322:00:173
5669993833,3cyclictest41-21ksoftirqd/300:30:223
5669993831,4cyclictest41-21ksoftirqd/300:10:063
134491380,4ptp4l4283-21df_abs23:45:151
134491380,4ptp4l14419-21sensors_temp22:55:260
134491380,4ptp4l0-21swapper/323:54:343
134491380,4ptp4l0-21swapper/323:42:073
134491380,4ptp4l0-21swapper/323:32:013
134491380,4ptp4l0-21swapper/323:28:553
134491380,4ptp4l0-21swapper/322:38:523
134491380,4ptp4l0-21swapper/319:10:153
134491380,4ptp4l0-21swapper/300:15:153
134491380,4ptp4l0-21swapper/223:48:052
134491380,4ptp4l0-21swapper/223:42:382
134491380,4ptp4l0-21swapper/223:36:122
134491380,4ptp4l0-21swapper/223:24:432
134491380,4ptp4l0-21swapper/223:12:062
134491380,4ptp4l0-21swapper/221:40:012
134491380,4ptp4l0-21swapper/220:46:472
134491380,4ptp4l0-21swapper/219:40:272
134491380,4ptp4l0-21swapper/200:33:302
134491380,4ptp4l0-21swapper/200:13:172
134491380,4ptp4l0-21swapper/123:20:011
134491380,4ptp4l0-21swapper/121:45:291
134491380,4ptp4l0-21swapper/120:41:331
134491380,4ptp4l0-21swapper/120:20:121
134491380,4ptp4l0-21swapper/120:02:191
134491380,4ptp4l0-21swapper/119:20:541
134491380,4ptp4l0-21swapper/119:19:181
134491380,4ptp4l0-21swapper/023:41:280
134491380,4ptp4l0-21swapper/023:27:350
134491380,4ptp4l0-21swapper/023:20:350
134491380,4ptp4l0-21swapper/023:10:070
134491380,4ptp4l0-21swapper/022:45:500
134491380,4ptp4l0-21swapper/021:25:030
134491380,4ptp4l0-21swapper/021:05:180
134491380,4ptp4l0-21swapper/020:11:470
134491380,3ptp4l0-21swapper/322:21:423
134491380,3ptp4l0-21swapper/300:20:243
134491380,3ptp4l0-21swapper/222:20:352
134491380,3ptp4l0-21swapper/220:20:172
134491380,3ptp4l0-21swapper/121:20:231
134491370,4ptp4l0-21swapper/323:21:163
134491370,4ptp4l0-21swapper/323:18:183
134491370,4ptp4l0-21swapper/300:05:123
134491370,4ptp4l0-21swapper/300:03:143
134491370,4ptp4l0-21swapper/223:16:472
134491370,4ptp4l0-21swapper/122:50:301
134491370,4ptp4l0-21swapper/021:21:050
134491360,4ptp4l0-21swapper/323:09:113
134491360,4ptp4l0-21swapper/322:45:493
134491360,3ptp4l0-21swapper/323:35:113
134491360,3ptp4l0-21swapper/323:03:183
5669993530,3cyclictest41-21ksoftirqd/322:58:403
134491340,3ptp4l0-21swapper/322:53:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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