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2025-12-09 - 07:51
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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 Dec 09, 2025 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2213321740,5sleep3683299cyclictest23:10:013
70412660,5sleep30-21swapper/322:35:273
2847191650,9ptp4l0-21swapper/223:17:362
2847191650,4ptp4l0-21swapper/023:35:180
2847191640,4ptp4l31603-21ls20:00:280
2847191640,4ptp4l0-21swapper/022:10:300
2847191620,4ptp4l0-21swapper/119:05:181
196352620,4sleep10-21swapper/119:35:241
2847191610,3ptp4l0-21swapper/023:30:140
2847191600,3ptp4l13345-21apt-get00:00:123
2847191600,15ptp4l0-21swapper/019:50:190
2847191580,4ptp4l0-21swapper/120:20:171
2847191580,3ptp4l521-21apt-get21:15:143
2847191570,3ptp4l0-21swapper/100:20:281
109602570,5sleep20-21swapper/220:25:282
6831995621,4cyclictest33-21ksoftirqd/221:00:012
2847191560,5ptp4l0-21swapper/219:25:012
2847191560,5ptp4l0-21swapper/219:25:002
2847191560,3ptp4l0-21swapper/123:32:431
2847191560,3ptp4l0-21swapper/020:42:280
2847191560,2ptp4l18379-21apt-get00:10:140
6831995524,4cyclictest33-21ksoftirqd/222:00:022
6831995521,4cyclictest33-21ksoftirqd/219:49:592
6831995433,3cyclictest33-21ksoftirqd/200:15:002
6831995425,7cyclictest33-21ksoftirqd/223:55:192
6831995422,5cyclictest33-21ksoftirqd/222:30:302
2847191540,4ptp4l0-21swapper/219:35:382
2847191530,4ptp4l0-21swapper/221:25:142
2847191530,4ptp4l0-21swapper/023:10:290
2847191530,4ptp4l0-21swapper/020:10:470
6831995226,3cyclictest33-21ksoftirqd/223:55:002
6831995222,4cyclictest33-21ksoftirqd/223:26:042
6831995222,4cyclictest33-21ksoftirqd/220:05:152
2847191520,4ptp4l0-21swapper/219:19:402
2847191520,4ptp4l0-21swapper/120:41:201
2847191520,4ptp4l0-21swapper/120:17:161
2847191520,3ptp4l0-21swapper/123:50:531
2847191520,3ptp4l0-21swapper/122:29:401
2847191520,3ptp4l0-21swapper/122:15:351
6831995123,3cyclictest33-21ksoftirqd/223:05:002
6831995123,3cyclictest33-21ksoftirqd/219:30:162
6831995122,7cyclictest33-21ksoftirqd/222:06:222
6831995120,4cyclictest33-21ksoftirqd/200:05:522
6831995118,11cyclictest33-21ksoftirqd/220:10:232
2847191510,4ptp4l0-21swapper/319:09:303
2847191510,4ptp4l0-21swapper/223:48:192
2847191510,4ptp4l0-21swapper/222:11:482
2847191510,4ptp4l0-21swapper/123:17:281
2847191510,4ptp4l0-21swapper/122:52:111
2847191510,4ptp4l0-21swapper/122:39:111
2847191510,4ptp4l0-21swapper/022:43:150
2847191510,4ptp4l0-21swapper/021:03:520
2847191510,4ptp4l0-21swapper/019:16:510
2847191510,4ptp4l0-21swapper/019:06:200
2847191510,3ptp4l0-21swapper/123:00:521
2847191510,3ptp4l0-21swapper/122:48:441
2847191510,3ptp4l0-21swapper/122:30:471
2847191510,3ptp4l0-21swapper/120:31:021
6831995023,7cyclictest33-21ksoftirqd/220:35:012
6831995023,4cyclictest33-21ksoftirqd/222:49:042
6831995021,6cyclictest33-21ksoftirqd/219:25:162
6831995021,3cyclictest33-21ksoftirqd/223:45:012
6831995019,9cyclictest33-21ksoftirqd/222:19:012
2847191500,4ptp4l0-21swapper/123:41:431
2847191500,4ptp4l0-21swapper/121:33:531
2847191500,3ptp4l0-21swapper/122:00:221
2847191500,3ptp4l0-21swapper/019:27:020
2847191500,11ptp4l0-21swapper/023:56:170
6831994925,8cyclictest33-21ksoftirqd/200:23:172
6831994922,7cyclictest33-21ksoftirqd/222:21:042
6831994920,5cyclictest33-21ksoftirqd/200:04:272
6831994920,4cyclictest33-21ksoftirqd/220:00:002
2847191490,4ptp4l0-21swapper/019:42:490
2847191490,3ptp4l0-21swapper/100:30:001
2847191490,3ptp4l0-21swapper/000:38:110
2847191490,11ptp4l0-21swapper/122:55:251
6831994823,7cyclictest33-21ksoftirqd/221:53:132
6831994821,7cyclictest33-21ksoftirqd/223:10:282
6831994820,3cyclictest33-21ksoftirqd/219:50:132
6831994817,6cyclictest33-21ksoftirqd/222:55:292
6831994817,5cyclictest33-21ksoftirqd/220:45:262
6831994817,4cyclictest33-21ksoftirqd/222:50:292
6831994816,3cyclictest33-21ksoftirqd/221:14:302
6831994811,8cyclictest33-21ksoftirqd/221:22:152
2847191480,4ptp4l0-21swapper/120:08:091
2847191480,3ptp4l0-21swapper/122:08:041
2847191480,3ptp4l0-21swapper/022:19:230
6831994726,9cyclictest33-21ksoftirqd/220:19:242
6831994721,6cyclictest33-21ksoftirqd/223:35:002
6831994718,6cyclictest33-21ksoftirqd/223:05:302
6831994715,6cyclictest33-21ksoftirqd/219:10:272
2847191470,3ptp4l0-21swapper/123:14:421
683199466,2cyclictest33-21ksoftirqd/200:27:592
6831994619,7cyclictest33-21ksoftirqd/220:21:582
6831994615,5cyclictest33-21ksoftirqd/222:25:272
6831994615,4cyclictest33-21ksoftirqd/220:35:222
6831994610,7cyclictest33-21ksoftirqd/221:31:222
2847191460,9ptp4l0-21swapper/323:55:503
2847191460,5ptp4l0-21swapper/219:09:502
2847191460,4ptp4l0-21swapper/119:21:511
2847191460,4ptp4l0-21swapper/119:21:511
2847191460,4ptp4l0-21swapper/019:14:110
683199455,2cyclictest33-21ksoftirqd/220:42:532
6831994525,4cyclictest33-21ksoftirqd/221:16:372
6831994519,3cyclictest33-21ksoftirqd/200:33:302
6831994510,5cyclictest33-21ksoftirqd/223:40:012
2847191450,5ptp4l0-21swapper/221:40:022
2847191450,3ptp4l0-21swapper/321:40:013
683199444,6cyclictest33-21ksoftirqd/221:35:522
683199444,2cyclictest33-21ksoftirqd/220:50:442
683199444,2cyclictest33-21ksoftirqd/220:50:432
6831994434,3cyclictest33-21ksoftirqd/220:04:392
6831994414,4cyclictest33-21ksoftirqd/200:20:012
683199441,3cyclictest121rcu_preempt22:00:012
6831994411,8cyclictest33-21ksoftirqd/222:40:062
6831994411,7cyclictest33-21ksoftirqd/221:03:272
2847191440,5ptp4l0-21swapper/122:10:141
2847191440,4ptp4l19973-21meminfo20:45:221
2847191440,4ptp4l1778-21gnome-shell00:06:580
2847191440,4ptp4l0-21swapper/120:29:521
2847191440,4ptp4l0-21swapper/022:25:220
2847191440,11ptp4l0-21swapper/023:40:280
6830994311,8cyclictest25-21ksoftirqd/123:45:231
2847191430,9ptp4l0-21swapper/222:37:562
2847191430,5ptp4l0-21swapper/319:15:153
2847191430,3ptp4l0-21swapper/123:07:201
2847191430,3ptp4l0-21swapper/119:15:341
6831994229,11cyclictest33-21ksoftirqd/221:05:202
2847191420,9ptp4l0-21swapper/021:13:590
2847191420,5ptp4l0-21swapper/322:45:173
2847191420,5ptp4l0-21swapper/020:05:140
2847191420,4ptp4l20690-21apt-get00:15:140
2847191420,4ptp4l19341-21memory00:10:221
2847191420,4ptp4l0-21swapper/319:29:193
2847191420,4ptp4l0-21swapper/121:16:151
2847191420,4ptp4l0-21swapper/121:07:381
2847191420,4ptp4l0-21swapper/120:10:201
2847191420,3ptp4l6387-21apt-get23:45:120
2847191420,3ptp4l5969-21/usr/sbin/munin20:15:210
2847191420,3ptp4l401ktimersoftd/319:24:253
2847191420,3ptp4l401ktimersoftd/319:24:253
2847191420,3ptp4l29261-21apt-get23:25:131
2847191420,3ptp4l0-21swapper/021:30:260
683199419,5cyclictest33-21ksoftirqd/223:20:222
683199413,6cyclictest33-21ksoftirqd/200:35:052
6831994112,5cyclictest33-21ksoftirqd/219:40:192
2847191410,5ptp4l8704-21/usr/sbin/munin23:50:130
2847191410,4ptp4l19334-21diskstats20:45:170
2847191410,4ptp4l0-21swapper/320:55:313
2847191410,4ptp4l0-21swapper/319:35:213
2847191410,4ptp4l0-21swapper/319:14:363
2847191410,4ptp4l0-21swapper/120:54:161
2847191410,4ptp4l0-21swapper/120:54:161
2847191410,4ptp4l0-21swapper/100:07:581
2847191410,3ptp4l8724-21iostat22:40:181
2847191410,3ptp4l6865-21apt-get19:10:151
2847191410,3ptp4l3508-21apt-get22:30:140
2847191410,3ptp4l31233-21apt-get22:20:121
2847191410,3ptp4l19723-21apt-get23:05:130
2847191410,3ptp4l13908-21apt-get20:35:040
2847191410,3ptp4l11063-21memory21:35:230
2847191410,3ptp4l0-21swapper/300:35:273
2847191410,3ptp4l0-21swapper/022:53:040
2847191410,3ptp4l0-21swapper/020:30:170
2847191410,2ptp4l0-21swapper/121:51:321
2847191400,5ptp4l0-21swapper/021:05:310
2847191400,4ptp4l4288-21ntp_states21:20:263
2847191400,4ptp4l28224-21iostat_ios00:30:201
2847191400,4ptp4l0-21swapper/323:52:493
2847191400,4ptp4l0-21swapper/322:53:413
2847191400,4ptp4l0-21swapper/321:05:063
2847191400,4ptp4l0-21swapper/320:10:443
2847191400,4ptp4l0-21swapper/320:05:263
2847191400,4ptp4l0-21swapper/123:20:271
2847191400,4ptp4l0-21swapper/100:00:231
2847191400,4ptp4l0-21swapper/023:25:350
2847191400,4ptp4l0-21swapper/022:38:350
2847191400,4ptp4l0-21swapper/021:23:130
2847191400,4ptp4l0-21swapper/021:19:130
2847191400,4ptp4l0-21swapper/020:51:030
2847191400,4ptp4l0-21swapper/020:51:020
2847191400,4ptp4l0-21swapper/020:25:150
2847191400,4ptp4l0-21swapper/019:55:260
2847191400,4ptp4l0-21swapper/019:45:260
2847191400,4ptp4l0-21swapper/019:20:070
2847191400,4ptp4l0-21swapper/019:20:060
2847191400,3ptp4l28334-21iostat_ios19:55:181
2847191400,3ptp4l26193-21ls23:15:290
2847191400,3ptp4l2388-21irqstats23:35:191
2847191400,3ptp4l17577-21df_inode21:50:150
2847191400,3ptp4l16076-21ntp_states21:45:240
2847191400,3ptp4l14582-21df20:35:151
2847191400,3ptp4l0-21swapper/319:30:513
2847191400,3ptp4l0-21swapper/000:31:200
6831993933,3cyclictest33-21ksoftirqd/221:45:272
2847191390,5ptp4l0-21swapper/321:54:403
2847191390,5ptp4l0-21swapper/022:20:130
2847191390,4ptp4l23331-21df_abs00:20:150
2847191390,4ptp4l14503-21/usr/sbin/munin00:00:240
2847191390,4ptp4l0-21swapper/323:45:483
2847191390,4ptp4l0-21swapper/323:35:363
2847191390,4ptp4l0-21swapper/322:12:283
2847191390,4ptp4l0-21swapper/322:01:283
2847191390,4ptp4l0-21swapper/321:55:163
2847191390,4ptp4l0-21swapper/321:40:283
2847191390,4ptp4l0-21swapper/321:30:123
2847191390,4ptp4l0-21swapper/321:27:183
2847191390,4ptp4l0-21swapper/321:10:033
2847191390,4ptp4l0-21swapper/320:50:213
2847191390,4ptp4l0-21swapper/320:50:213
2847191390,4ptp4l0-21swapper/320:45:303
2847191390,4ptp4l0-21swapper/319:40:073
2847191390,4ptp4l0-21swapper/300:17:343
2847191390,4ptp4l0-21swapper/300:05:143
2847191390,4ptp4l0-21swapper/123:55:161
2847191390,4ptp4l0-21swapper/121:48:111
2847191390,4ptp4l0-21swapper/121:36:171
2847191390,4ptp4l0-21swapper/121:10:011
2847191390,4ptp4l0-21swapper/120:55:331
2847191390,4ptp4l0-21swapper/120:00:271
2847191390,4ptp4l0-21swapper/119:40:261
2847191390,4ptp4l0-21swapper/023:21:560
2847191390,4ptp4l0-21swapper/023:00:130
2847191390,4ptp4l0-21swapper/022:45:150
2847191390,4ptp4l0-21swapper/021:59:500
2847191390,4ptp4l0-21swapper/021:42:270
2847191390,4ptp4l0-21swapper/020:55:460
2847191390,4ptp4l0-21swapper/020:24:090
2847191390,4ptp4l0-21swapper/000:25:160
2847191390,3ptp4l30223-21memory23:25:223
2847191390,3ptp4l19572-21apt-get21:55:121
2847191390,3ptp4l0-21swapper/319:46:483
2847191390,3ptp4l0-21swapper/119:32:531
2847191390,3ptp4l0-21swapper/022:05:320
2847191390,3ptp4l0-21swapper/019:30:220
2847191390,2ptp4l6521-21strings21:25:231
2847191380,4ptp4l41-21ksoftirqd/320:19:553
2847191380,4ptp4l15202-21grep22:55:160
2847191380,4ptp4l0-21swapper/323:40:403
2847191380,4ptp4l0-21swapper/323:30:223
2847191380,4ptp4l0-21swapper/323:05:203
2847191380,4ptp4l0-21swapper/322:43:193
2847191380,4ptp4l0-21swapper/322:33:353
2847191380,4ptp4l0-21swapper/322:25:443
2847191380,4ptp4l0-21swapper/322:17:373
2847191380,4ptp4l0-21swapper/319:56:403
2847191380,4ptp4l0-21swapper/300:27:453
2847191380,4ptp4l0-21swapper/300:11:053
2847191380,4ptp4l0-21swapper/121:40:541
2847191380,4ptp4l0-21swapper/121:22:131
2847191380,4ptp4l0-21swapper/121:00:201
2847191380,4ptp4l0-21swapper/119:50:001
2847191380,4ptp4l0-21swapper/119:25:551
2847191380,4ptp4l0-21swapper/021:26:210
2847191380,3ptp4l0-21swapper/322:05:023
2847191380,3ptp4l0-21swapper/321:00:163
2847191380,3ptp4l0-21swapper/320:20:523
2847191380,3ptp4l0-21swapper/100:17:151
2847191380,2ptp4l22537-21iostat_ios22:00:190
2847191370,5ptp4l0-21swapper/100:35:161
2847191370,4ptp4l0-21swapper/323:24:383
2847191370,4ptp4l0-21swapper/322:20:043
2847191370,4ptp4l0-21swapper/320:00:303
2847191370,4ptp4l0-21swapper/319:50:593
2847191370,4ptp4l0-21swapper/119:45:151
2847191370,4ptp4l0-21swapper/019:36:150
2847191370,3ptp4l0-21swapper/323:16:593
2847191360,4ptp4l0-21swapper/322:56:583
2847191360,4ptp4l0-21swapper/321:47:463
2847191360,3ptp4l0-21swapper/323:03:393
2847191360,3ptp4l0-21swapper/320:42:033
2847191360,3ptp4l0-21swapper/320:35:213
2847191350,3ptp4l0-21swapper/320:27:153
2847191350,3ptp4l0-21swapper/300:34:493
2847191340,3ptp4l0-21swapper/320:33:453
2847191330,4ptp4l0-21swapper/300:24:543
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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