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2025-11-23 - 20:01
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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 Sun Nov 23, 2025 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191610,3ptp4l0-21swapper/108:26:491
2847191600,4ptp4l0-21swapper/012:20:170
2847191600,3ptp4l0-21swapper/107:05:121
2847191590,3ptp4l0-21swapper/111:33:201
2847191580,4ptp4l0-21swapper/307:33:553
2847191570,4ptp4l0-21swapper/010:26:460
2847191570,4ptp4l0-21swapper/009:05:220
2847191570,3ptp4l0-21swapper/110:55:231
2847191570,3ptp4l0-21swapper/110:54:391
2847191570,3ptp4l0-21swapper/110:54:391
2847191570,3ptp4l0-21swapper/008:18:410
2847191570,3ptp4l0-21swapper/008:04:180
2847191560,4ptp4l0-21swapper/307:15:303
2847191560,3ptp4l0-21swapper/210:10:302
13830995629,4cyclictest25-21ksoftirqd/107:20:151
13830995626,4cyclictest25-21ksoftirqd/110:10:271
13830995525,7cyclictest25-21ksoftirqd/111:25:181
13830995525,7cyclictest25-21ksoftirqd/111:25:181
2847191540,4ptp4l0-21swapper/109:49:051
2847191540,10ptp4l0-21swapper/007:50:200
1383199547,6cyclictest0-21swapper/208:25:172
13830995430,7cyclictest25-21ksoftirqd/110:30:161
13830995425,9cyclictest25-21ksoftirqd/108:40:131
13830995425,3cyclictest25-21ksoftirqd/112:00:261
13830995424,4cyclictest25-21ksoftirqd/109:03:581
2847191530,4ptp4l0-21swapper/110:25:271
2847191530,3ptp4l0-21swapper/108:39:191
2847191530,3ptp4l0-21swapper/010:35:210
1383199538,7cyclictest0-21swapper/209:40:232
1383199537,7cyclictest0-21swapper/211:05:172
1383199537,7cyclictest0-21swapper/210:55:282
1383199537,7cyclictest0-21swapper/210:45:282
1383199537,7cyclictest0-21swapper/210:20:192
1383199537,6cyclictest0-21swapper/211:50:172
1383199537,13cyclictest0-21swapper/208:45:292
13831995344,6cyclictest26788-21open_files07:35:232
13830995336,4cyclictest25-21ksoftirqd/107:35:001
13830995329,8cyclictest25-21ksoftirqd/108:00:241
13830995325,8cyclictest25-21ksoftirqd/109:55:001
13830995324,3cyclictest25-21ksoftirqd/110:50:001
13830995324,3cyclictest25-21ksoftirqd/109:23:181
13830995323,4cyclictest25-21ksoftirqd/109:05:381
2847191520,5ptp4l0-21swapper/307:40:193
2847191520,4ptp4l0-21swapper/307:54:083
2847191520,3ptp4l0-21swapper/008:22:220
1383199527,6cyclictest0-21swapper/212:35:232
1383199527,6cyclictest0-21swapper/208:30:172
13830995225,3cyclictest25-21ksoftirqd/107:25:471
13830995224,8cyclictest25-21ksoftirqd/110:15:151
13830995224,3cyclictest25-21ksoftirqd/111:50:271
13830995223,9cyclictest25-21ksoftirqd/112:25:181
13830995223,6cyclictest25-21ksoftirqd/107:55:281
13830995222,2cyclictest25-21ksoftirqd/111:21:441
2847191510,4ptp4l0-21swapper/108:32:411
2847191510,4ptp4l0-21swapper/009:13:550
1383199518,6cyclictest0-21swapper/211:20:162
1383199518,6cyclictest0-21swapper/208:00:112
1383199517,7cyclictest0-21swapper/212:25:212
1383199517,7cyclictest0-21swapper/209:20:212
1383199517,7cyclictest0-21swapper/209:05:242
1383199517,6cyclictest0-21swapper/212:00:302
1383199517,6cyclictest0-21swapper/210:30:122
1383199517,6cyclictest0-21swapper/209:25:272
1383199517,6cyclictest0-21swapper/208:55:182
1383199516,7cyclictest0-21swapper/212:30:272
1383199510,6cyclictest11901-21sed08:15:002
13830995122,3cyclictest25-21ksoftirqd/111:04:011
13830995121,6cyclictest25-21ksoftirqd/109:30:141
13830995119,3cyclictest25-21ksoftirqd/107:14:321
13830995118,7cyclictest25-21ksoftirqd/110:35:291
2847191500,4ptp4l0-21swapper/310:03:003
2847191500,3ptp4l0-21swapper/309:31:393
1383199507,7cyclictest0-21swapper/210:35:052
1383199507,6cyclictest0-21swapper/209:35:142
1383199507,6cyclictest0-21swapper/208:22:222
1383199507,12cyclictest0-21swapper/208:15:262
1383199506,6cyclictest0-21swapper/211:40:222
1383199506,6cyclictest0-21swapper/209:45:162
1383199506,6cyclictest0-21swapper/207:30:152
1383199506,42cyclictest29156-21kworker/2:110:00:292
1383199506,12cyclictest0-21swapper/209:30:222
13830995024,3cyclictest25-21ksoftirqd/111:19:561
13830995020,2cyclictest25-21ksoftirqd/108:16:061
1383099501,10cyclictest25-21ksoftirqd/112:10:241
311282490,4sleep20-21swapper/207:45:202
2847191490,5ptp4l5365-21apt-get10:20:000
2847191490,3ptp4l0-21swapper/007:30:200
1383199497,6cyclictest0-21swapper/212:05:312
1383199496,7cyclictest0-21swapper/211:00:142
1383199496,11cyclictest0-21swapper/211:15:212
1383199496,11cyclictest0-21swapper/209:55:232
13830994924,6cyclictest25-21ksoftirqd/109:25:181
13830994922,8cyclictest25-21ksoftirqd/110:00:121
13830994921,6cyclictest25-21ksoftirqd/111:48:151
13830994920,7cyclictest25-21ksoftirqd/108:10:191
13830994920,3cyclictest25-21ksoftirqd/107:45:221
13830994919,6cyclictest25-21ksoftirqd/108:20:191
2847191480,4ptp4l16840-21irqstats11:50:200
2847191480,2ptp4l17319-21df09:35:140
1383199487,6cyclictest0-21swapper/211:13:522
1383199487,6cyclictest0-21swapper/209:13:212
1383199487,6cyclictest0-21swapper/207:40:282
1383199486,7cyclictest0-21swapper/209:15:332
1383199486,12cyclictest0-21swapper/207:15:262
13830994828,9cyclictest25-21ksoftirqd/111:35:151
13830994823,6cyclictest25-21ksoftirqd/109:40:001
13830994822,7cyclictest25-21ksoftirqd/107:50:141
13830994821,6cyclictest25-21ksoftirqd/108:55:181
13830994821,3cyclictest25-21ksoftirqd/112:35:221
13830994816,8cyclictest25-21ksoftirqd/108:10:001
2847191470,8ptp4l0-21swapper/007:10:220
2847191470,3ptp4l0-21swapper/310:15:273
2847191470,14ptp4l9-21ksoftirqd/010:40:540
1383199477,7cyclictest0-21swapper/208:35:462
1383199477,6cyclictest0-21swapper/211:58:002
1383099475,3cyclictest25-21ksoftirqd/109:15:251
13830994723,3cyclictest25-21ksoftirqd/110:24:291
13830994722,6cyclictest25-21ksoftirqd/111:55:251
13830994722,3cyclictest25-21ksoftirqd/110:44:561
13830994719,6cyclictest25-21ksoftirqd/107:15:211
13830994718,6cyclictest25-21ksoftirqd/112:30:181
13830994711,9cyclictest25-21ksoftirqd/110:05:191
2847191460,5ptp4l12989-21ls07:05:260
2847191460,3ptp4l0-21swapper/112:05:021
2847191460,3ptp4l0-21swapper/107:35:121
2847191460,3ptp4l0-21swapper/008:27:340
1383199468,6cyclictest0-21swapper/212:15:262
1383199466,6cyclictest0-21swapper/212:10:332
1383199466,10cyclictest0-21swapper/207:50:142
1383199465,7cyclictest0-21swapper/210:25:172
1383199463,7cyclictest0-21swapper/211:30:242
13830994635,3cyclictest25-21ksoftirqd/111:05:401
13830994615,8cyclictest25-21ksoftirqd/107:40:151
2847191450,4ptp4l5471-21apt-get09:10:111
2847191450,10ptp4l27853-21awk08:45:291
2847191450,10ptp4l0-21swapper/208:53:342
1383199457,8cyclictest0-21swapper/209:03:022
1383199457,6cyclictest0-21swapper/210:40:282
1383199457,6cyclictest0-21swapper/209:53:572
2849491440,13getstats0-21swapper/310:22:303
2847191440,8ptp4l0-21swapper/210:52:352
2847191440,8ptp4l0-21swapper/210:52:352
2847191440,4ptp4l0-21swapper/109:42:011
1383199442,6cyclictest0-21swapper/210:15:242
13830994423,7cyclictest25-21ksoftirqd/112:22:121
1383099441,6cyclictest25-21ksoftirqd/109:55:211
2847191430,9ptp4l0-21swapper/010:24:190
2847191430,6ptp4l0-21swapper/309:20:173
2847191430,5ptp4l1124-21/usr/sbin/munin10:10:160
2847191430,4ptp4l29483-21apt-get11:10:133
2847191430,4ptp4l26581-21df09:55:140
2847191430,4ptp4l10671-21df10:30:140
2847191430,3ptp4l15008-21df09:30:150
2847191430,2ptp4l121rcu_preempt07:20:100
1383199432,6cyclictest0-21swapper/211:45:142
1383099433,2cyclictest121rcu_preempt11:10:281
13830994322,3cyclictest25-21ksoftirqd/112:15:331
13830994322,3cyclictest25-21ksoftirqd/111:43:251
2847191420,5ptp4l0-21swapper/311:40:243
2847191420,4ptp4l4485-21apt-get12:35:123
2847191420,4ptp4l28003-21hddtemp_smartct12:15:180
2847191420,4ptp4l24384-21df_inode09:50:200
2847191420,4ptp4l10399-21ls11:35:270
2847191420,4ptp4l0-21swapper/309:42:533
2847191420,4ptp4l0-21swapper/007:18:260
2847191420,3ptp4l26682-21hddtemp_smartct08:45:180
2847191420,3ptp4l17691-21apt-get10:45:140
2847191420,2ptp4l0-21swapper/011:11:070
2847191420,12ptp4l9-21ksoftirqd/009:17:440
2847191410,5ptp4l9-21ksoftirqd/012:10:010
2847191410,5ptp4l8648-21proc_pri08:05:240
2847191410,5ptp4l0-21swapper/309:50:213
2847191410,5ptp4l0-21swapper/307:35:113
2847191410,5ptp4l0-21swapper/010:50:130
2847191410,5ptp4l0-21swapper/010:50:130
2847191410,4ptp4l3169-21ntp_states11:20:240
2847191410,4ptp4l13988-21df_inode11:45:150
2847191410,4ptp4l1087-21df_inode09:00:150
2847191410,4ptp4l0-21swapper/312:34:503
2847191410,4ptp4l0-21swapper/310:25:173
2847191410,4ptp4l0-21swapper/308:55:113
2847191410,4ptp4l0-21swapper/207:12:102
2847191410,4ptp4l0-21swapper/012:00:230
2847191410,4ptp4l0-21swapper/010:57:150
2847191410,4ptp4l0-21swapper/009:24:310
2847191410,4ptp4l0-21swapper/007:44:540
2847191410,3ptp4l915-21apt-get10:10:143
2847191410,3ptp4l7107-21apt-config08:05:003
2847191410,3ptp4l6977-21apt-get08:05:022
2847191410,3ptp4l32518-21df_inode12:25:130
2847191410,3ptp4l31334-21df_inode10:05:140
2847191410,3ptp4l28992-21hddtemp_smartct08:50:160
2847191410,3ptp4l2493-21diskstats12:30:180
2847191410,3ptp4l24857-21apt-get11:00:140
2847191410,3ptp4l22720-21ntp_states08:35:230
2847191410,3ptp4l20234-21ls08:30:203
2847191410,3ptp4l11674-21diskstats11:40:150
2847191410,3ptp4l10058-21df_inode08:10:160
1383199416,6cyclictest0-21swapper/207:23:162
1383099415,5cyclictest25-21ksoftirqd/108:50:151
2847191400,5ptp4l0-21swapper/309:55:123
2847191400,5ptp4l0-21swapper/211:25:412
2847191400,5ptp4l0-21swapper/211:25:412
2847191400,4ptp4l32572-21ls10:05:273
2847191400,4ptp4l0-21swapper/312:10:283
2847191400,4ptp4l0-21swapper/311:28:273
2847191400,4ptp4l0-21swapper/311:28:273
2847191400,4ptp4l0-21swapper/310:42:043
2847191400,4ptp4l0-21swapper/309:45:513
2847191400,4ptp4l0-21swapper/308:22:153
2847191400,4ptp4l0-21swapper/308:05:003
2847191400,4ptp4l0-21swapper/307:48:373
2847191400,4ptp4l0-21swapper/307:25:163
2847191400,4ptp4l0-21swapper/212:23:212
2847191400,4ptp4l0-21swapper/211:39:242
2847191400,4ptp4l0-21swapper/210:07:032
2847191400,4ptp4l0-21swapper/207:26:432
2847191400,4ptp4l0-21swapper/012:35:400
2847191400,4ptp4l0-21swapper/012:11:320
2847191400,4ptp4l0-21swapper/011:56:430
2847191400,4ptp4l0-21swapper/011:32:420
2847191400,4ptp4l0-21swapper/011:25:190
2847191400,4ptp4l0-21swapper/011:25:190
2847191400,4ptp4l0-21swapper/011:15:470
2847191400,4ptp4l0-21swapper/010:00:130
2847191400,4ptp4l0-21swapper/009:41:280
2847191400,4ptp4l0-21swapper/009:28:040
2847191400,4ptp4l0-21swapper/008:57:110
2847191400,4ptp4l0-21swapper/008:40:380
2847191400,4ptp4l0-21swapper/007:57:060
2847191400,4ptp4l0-21swapper/007:25:110
2847191400,3ptp4l28194-21ls11:05:220
1383199400,6cyclictest33-21ksoftirqd/207:55:172
2847191390,4ptp4l0-21swapper/311:04:013
2847191390,4ptp4l0-21swapper/310:47:263
2847191390,4ptp4l0-21swapper/310:37:313
2847191390,4ptp4l0-21swapper/309:39:393
2847191390,4ptp4l0-21swapper/309:27:543
2847191390,4ptp4l0-21swapper/309:08:113
2847191390,4ptp4l0-21swapper/309:04:103
2847191390,4ptp4l0-21swapper/308:53:363
2847191390,4ptp4l0-21swapper/308:47:393
2847191390,4ptp4l0-21swapper/308:26:003
2847191390,4ptp4l0-21swapper/307:23:203
2847191390,4ptp4l0-21swapper/008:30:240
2847191390,4ptp4l0-21swapper/007:45:430
2847191390,4ptp4l0-21swapper/007:37:140
2847191390,3ptp4l0-21swapper/308:36:083
2847191390,3ptp4l0-21swapper/009:45:240
2847191380,4ptp4l17715-21taskset11:50:583
2847191380,4ptp4l0-21swapper/312:17:413
2847191380,4ptp4l0-21swapper/312:05:353
2847191380,4ptp4l0-21swapper/311:31:083
2847191380,4ptp4l0-21swapper/208:40:372
2847191380,3ptp4l1293-21snmpd09:12:223
2847191380,3ptp4l0-21swapper/312:21:133
2847191380,3ptp4l0-21swapper/311:46:253
2847191380,3ptp4l0-21swapper/311:05:273
2847191380,3ptp4l0-21swapper/310:32:153
2847191380,3ptp4l0-21swapper/308:16:253
2847191370,4ptp4l0-21swapper/312:03:343
2847191370,4ptp4l0-21swapper/310:57:353
2847191370,4ptp4l0-21swapper/308:42:153
2847191370,3ptp4l0-21swapper/312:27:093
2847191370,3ptp4l0-21swapper/311:15:073
2847191370,3ptp4l0-21swapper/309:17:133
2847191370,3ptp4l0-21swapper/307:55:193
2847191370,3ptp4l0-21swapper/307:12:283
2847191360,3ptp4l0-21swapper/311:38:493
2847191360,3ptp4l0-21swapper/310:53:143
2847191360,3ptp4l0-21swapper/310:53:143
2847191360,3ptp4l0-21swapper/308:11:053
2847191350,3ptp4l0-21swapper/311:55:053
2847191340,3ptp4l0-21swapper/311:20:103
2849691213,11phc2sys0-21swapper/207:05:242
2849691135,4phc2sys0-21swapper/307:08:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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