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2025-12-03 - 20:13
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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 highest latencies:
System rackdslot1.osadl.org (updated Wed Dec 03, 2025 12:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
831321430,5sleep31369199cyclictest08:05:233
2847191710,4ptp4l13107-21python08:15:251
2847191670,5ptp4l0-21swapper/311:45:233
2847191650,2ptp4l1232-21ntp_states07:50:231
2847191630,3ptp4l28852-21ls07:40:201
2847191620,3ptp4l0-21swapper/107:30:261
2847191620,23ptp4l0-21swapper/109:15:251
2847191610,4ptp4l0-21swapper/308:40:323
2847191610,4ptp4l0-21swapper/109:01:111
2847191600,4ptp4l0-21swapper/112:00:181
2847191590,5ptp4l0-21swapper/312:30:303
2847191590,4ptp4l0-21swapper/108:43:181
2847191590,3ptp4l0-21swapper/112:35:261
2847191590,3ptp4l0-21swapper/111:55:061
2847191590,3ptp4l0-21swapper/009:30:270
2847191580,3ptp4l0-21swapper/110:42:341
2847191580,3ptp4l0-21swapper/010:30:170
2847191580,3ptp4l0-21swapper/008:10:160
1369099582,32cyclictest0-21swapper/212:19:482
2847191570,5ptp4l0-21swapper/307:06:073
2847191570,4ptp4l0-21swapper/307:41:293
2847191570,4ptp4l0-21swapper/209:23:242
2847191570,4ptp4l0-21swapper/108:45:171
2847191570,3ptp4l0-21swapper/109:20:151
13690995726,4cyclictest33-21ksoftirqd/208:55:152
2847191560,4ptp4l0-21swapper/108:26:201
2847191560,4ptp4l0-21swapper/009:35:310
2847191560,4ptp4l0-21swapper/009:35:310
2847191550,4ptp4l0-21swapper/311:27:353
2847191550,4ptp4l0-21swapper/107:37:421
2847191550,4ptp4l0-21swapper/012:18:260
2847191550,4ptp4l0-21swapper/011:40:190
2847191540,4ptp4l0-21swapper/109:51:091
2847191540,3ptp4l0-21swapper/110:38:511
13690995426,4cyclictest33-21ksoftirqd/211:00:172
2847191530,4ptp4l0-21swapper/209:35:052
2847191530,4ptp4l0-21swapper/209:35:052
2847191530,4ptp4l0-21swapper/111:12:191
2847191530,4ptp4l0-21swapper/110:04:231
2847191530,4ptp4l0-21swapper/109:41:291
2847191520,4ptp4l0-21swapper/311:06:263
2847191520,4ptp4l0-21swapper/209:08:282
2847191520,4ptp4l0-21swapper/207:15:212
2847191520,4ptp4l0-21swapper/112:11:011
2847191520,4ptp4l0-21swapper/110:34:581
2847191520,4ptp4l0-21swapper/108:57:241
2847191520,4ptp4l0-21swapper/107:58:171
2847191520,3ptp4l0-21swapper/111:47:081
2847191520,3ptp4l0-21swapper/109:11:291
1369099524,7cyclictest0-21swapper/210:15:242
2847191510,4ptp4l0-21swapper/309:43:253
2847191510,4ptp4l0-21swapper/109:59:541
2847191510,4ptp4l0-21swapper/108:53:341
2847191510,4ptp4l0-21swapper/108:02:071
2847191510,3ptp4l0-21swapper/108:35:231
2847191510,12ptp4l12474-21ntp_states07:05:240
1369099515,7cyclictest0-21swapper/212:25:182
13690995126,5cyclictest33-21ksoftirqd/207:20:222
1369099512,30cyclictest0-21swapper/208:49:232
2847191500,4ptp4l0-21swapper/208:18:222
2847191500,4ptp4l0-21swapper/112:20:571
2847191500,4ptp4l0-21swapper/112:05:411
2847191500,4ptp4l0-21swapper/007:20:300
2847191500,3ptp4l0-21swapper/109:08:581
2847191500,3ptp4l0-21swapper/108:22:341
1369099505,7cyclictest0-21swapper/212:20:222
1369099505,6cyclictest0-21swapper/209:55:322
1369099504,7cyclictest0-21swapper/211:05:222
1369099504,7cyclictest0-21swapper/210:05:152
2847191490,9ptp4l12696-21python07:05:251
2847191490,4ptp4l0-21swapper/310:03:353
2847191490,4ptp4l0-21swapper/110:11:221
2847191490,4ptp4l0-21swapper/107:12:401
2847191490,4ptp4l0-21swapper/009:53:460
2847191490,3ptp4l0-21swapper/112:15:561
1369099495,7cyclictest0-21swapper/209:31:062
1369099495,6cyclictest0-21swapper/210:40:252
1369099494,7cyclictest0-21swapper/209:00:292
1369099494,7cyclictest0-21swapper/207:35:312
1369099492,26cyclictest0-21swapper/211:29:382
2847191480,4ptp4l0-21swapper/008:20:010
2847191480,3ptp4l0-21swapper/008:04:450
1369099485,6cyclictest0-21swapper/212:34:122
1369099485,6cyclictest0-21swapper/211:55:222
1369099485,6cyclictest0-21swapper/208:10:262
1369099484,7cyclictest0-21swapper/210:45:232
1369099484,6cyclictest0-21swapper/212:05:202
1369099484,6cyclictest0-21swapper/211:35:192
2847191470,6ptp4l0-21swapper/110:50:221
2847191470,4ptp4l0-21swapper/112:26:041
203112470,4sleep00-21swapper/012:00:130
1369099476,6cyclictest0-21swapper/209:50:252
1369099475,6cyclictest0-21swapper/210:03:372
1369099475,6cyclictest0-21swapper/209:25:252
1369099475,6cyclictest0-21swapper/207:25:422
1369099474,7cyclictest0-21swapper/210:33:362
1369099474,6cyclictest0-21swapper/211:30:192
1369099474,6cyclictest0-21swapper/208:50:232
1369099474,11cyclictest0-21swapper/212:35:192
1369099474,10cyclictest0-21swapper/210:35:242
1369099473,5cyclictest0-21swapper/210:55:012
1369099472,4cyclictest0-21swapper/212:10:282
2847191460,4ptp4l0-21swapper/111:41:481
2847191460,4ptp4l0-21swapper/110:26:511
2847191460,4ptp4l0-21swapper/109:29:491
2847191460,3ptp4l0-21swapper/312:08:213
2847191460,3ptp4l0-21swapper/308:21:023
2847191460,3ptp4l0-21swapper/010:21:090
2847191460,3ptp4l0-21swapper/007:13:590
2847191460,10ptp4l0-21swapper/008:33:060
1369099465,11cyclictest0-21swapper/207:40:152
1369099464,6cyclictest0-21swapper/207:50:212
1369099464,11cyclictest0-21swapper/210:25:262
13690994637,6cyclictest2649-21expr07:55:142
1369099463,6cyclictest0-21swapper/209:10:282
1369099460,8cyclictest33-21ksoftirqd/210:20:122
2847191450,9ptp4l0-21swapper/208:04:212
2847191450,9ptp4l0-21swapper/011:51:370
2847191450,9ptp4l0-21swapper/011:51:360
2847191450,9ptp4l0-21swapper/011:02:400
2847191450,5ptp4l0-21swapper/209:45:122
2847191450,4ptp4l23049-21apt-get07:30:132
2847191450,4ptp4l0-21swapper/312:15:313
2847191450,4ptp4l0-21swapper/110:24:361
2847191450,4ptp4l0-21swapper/110:06:151
2847191450,4ptp4l0-21swapper/107:29:491
1369099456,6cyclictest0-21swapper/208:27:072
1369099456,5cyclictest0-21swapper/208:34:012
1369099455,7cyclictest0-21swapper/208:08:192
1369099455,6cyclictest0-21swapper/211:40:062
1369099452,5cyclictest0-21swapper/210:55:012
1369099452,27cyclictest0-21swapper/209:42:472
2847191440,9ptp4l0-21swapper/207:11:402
2847191440,9ptp4l0-21swapper/011:06:060
2847191440,7ptp4l20330-21sed08:30:283
2847191440,6ptp4l19464-21/usr/sbin/munin11:55:280
2847191440,5ptp4l9585-21ntp_states11:35:221
2847191440,5ptp4l0-21swapper/207:08:362
2847191440,4ptp4l24738-21apt-get12:10:130
2847191440,10ptp4l0-21swapper/011:47:530
1369099446,6cyclictest0-21swapper/208:40:072
1369099444,9cyclictest0-21swapper/211:54:512
1369099444,9cyclictest0-21swapper/211:54:502
1369099442,7cyclictest0-21swapper/211:45:192
1369099442,7cyclictest0-21swapper/209:15:292
1369099442,5cyclictest0-21swapper/211:20:242
1369099442,5cyclictest0-21swapper/211:20:242
2847191430,8ptp4l0-21swapper/211:14:372
2847191430,4ptp4l1472-21apt-get11:20:151
2847191430,4ptp4l1472-21apt-get11:20:151
2847191430,4ptp4l0-21swapper/109:31:051
2847191430,4ptp4l0-21swapper/009:45:160
2847191430,3ptp4l0-21swapper/111:06:151
2847191430,3ptp4l0-21swapper/110:45:501
2847191430,10ptp4l0-21swapper/311:42:153
1369099434,5cyclictest0-21swapper/208:39:552
1369099432,7cyclictest0-21swapper/208:20:262
1369099431,6cyclictest33-21ksoftirqd/207:45:262
2847191420,5ptp4l7844-21iostat09:15:180
2847191420,5ptp4l0-21swapper/110:55:031
2847191420,4ptp4l7342-21df08:05:140
2847191420,4ptp4l31862-21diskstats11:15:172
2847191420,4ptp4l2186-21df_inode12:30:150
1369099424,5cyclictest0-21swapper/212:00:582
2847191410,5ptp4l0-21swapper/108:05:141
2847191410,4ptp4l22481-21/usr/sbin/munin09:45:211
2847191410,4ptp4l21660-21df09:45:143
2847191410,4ptp4l21596-21apt-get10:55:020
2847191410,4ptp4l0-21swapper/210:12:312
2847191410,4ptp4l0-21swapper/112:30:121
2847191410,4ptp4l0-21swapper/108:14:591
2847191410,4ptp4l0-21swapper/107:17:511
2847191410,4ptp4l0-21swapper/012:06:150
2847191410,4ptp4l0-21swapper/011:35:130
2847191410,4ptp4l0-21swapper/011:20:090
2847191410,4ptp4l0-21swapper/011:20:090
2847191410,4ptp4l0-21swapper/010:05:120
2847191410,4ptp4l0-21swapper/009:27:110
2847191410,4ptp4l0-21swapper/008:26:180
2847191410,4ptp4l0-21swapper/007:16:440
2847191410,3ptp4l7279-21ntp_states11:30:230
2847191410,3ptp4l4497-21df_inode12:35:150
2847191410,3ptp4l32396-21irqstats11:15:223
2847191410,3ptp4l31340-21ntp_states07:45:241
2847191410,3ptp4l28348-21df_inode08:50:150
2847191410,3ptp4l25671-21df_inode07:35:170
2847191410,3ptp4l17396-21irqstats09:35:221
2847191410,3ptp4l17396-21irqstats09:35:211
2847191400,5ptp4l0-21swapper/311:50:263
2847191400,5ptp4l0-21swapper/311:50:263
2847191400,5ptp4l0-21swapper/308:57:253
2847191400,4ptp4l30446-21ls11:10:253
2847191400,4ptp4l2765-21tr09:05:130
2847191400,4ptp4l2569-21cat07:55:140
2847191400,4ptp4l0-21swapper/309:15:493
2847191400,4ptp4l0-21swapper/308:50:043
2847191400,4ptp4l0-21swapper/308:25:143
2847191400,4ptp4l0-21swapper/307:16:223
2847191400,4ptp4l0-21swapper/012:25:160
2847191400,4ptp4l0-21swapper/012:20:150
2847191400,4ptp4l0-21swapper/011:25:130
2847191400,4ptp4l0-21swapper/011:15:270
2847191400,4ptp4l0-21swapper/010:50:190
2847191400,4ptp4l0-21swapper/010:48:130
2847191400,4ptp4l0-21swapper/010:40:120
2847191400,4ptp4l0-21swapper/010:28:450
2847191400,4ptp4l0-21swapper/009:55:240
2847191400,4ptp4l0-21swapper/009:40:090
2847191400,4ptp4l0-21swapper/008:20:500
2847191400,4ptp4l0-21swapper/007:46:030
2847191400,4ptp4l0-21swapper/007:30:580
2847191400,3ptp4l29243-21iostat_ios10:00:200
2847191400,3ptp4l23996-21iostat_ios08:40:170
2847191400,3ptp4l12830-21df_inode10:35:150
2847191400,3ptp4l0-21swapper/309:50:333
2847191400,3ptp4l0-21swapper/111:01:571
2847191400,3ptp4l0-21swapper/009:22:550
2847191390,5ptp4l0-21swapper/312:28:463
2847191390,5ptp4l0-21swapper/309:10:133
2847191390,4ptp4l26082-21fschecks_count08:45:150
2847191390,4ptp4l21255-21cut08:35:143
2847191390,4ptp4l10073-21latency_hist10:30:013
2847191390,4ptp4l0-21swapper/312:36:243
2847191390,4ptp4l0-21swapper/312:22:003
2847191390,4ptp4l0-21swapper/312:04:213
2847191390,4ptp4l0-21swapper/311:35:153
2847191390,4ptp4l0-21swapper/311:21:583
2847191390,4ptp4l0-21swapper/311:21:583
2847191390,4ptp4l0-21swapper/310:45:163
2847191390,4ptp4l0-21swapper/310:35:303
2847191390,4ptp4l0-21swapper/310:13:303
2847191390,4ptp4l0-21swapper/309:57:013
2847191390,4ptp4l0-21swapper/309:35:323
2847191390,4ptp4l0-21swapper/309:35:313
2847191390,4ptp4l0-21swapper/309:04:193
2847191390,4ptp4l0-21swapper/308:12:053
2847191390,4ptp4l0-21swapper/308:02:273
2847191390,4ptp4l0-21swapper/307:47:143
2847191390,4ptp4l0-21swapper/307:33:323
2847191390,4ptp4l0-21swapper/111:51:301
2847191390,4ptp4l0-21swapper/111:51:301
2847191390,4ptp4l0-21swapper/111:30:181
2847191390,4ptp4l0-21swapper/110:18:081
2847191390,4ptp4l0-21swapper/108:30:261
2847191390,4ptp4l0-21swapper/011:13:350
2847191390,4ptp4l0-21swapper/010:17:180
2847191390,4ptp4l0-21swapper/010:10:160
2847191390,4ptp4l0-21swapper/009:00:090
2847191390,4ptp4l0-21swapper/008:35:240
2847191390,4ptp4l0-21swapper/007:50:120
2847191390,4ptp4l0-21swapper/007:40:470
2847191390,4ptp4l0-21swapper/007:25:150
2847191390,3ptp4l9-21ksoftirqd/008:56:180
2847191390,3ptp4l4045-21df11:25:131
2847191390,3ptp4l31081-21apt-get11:15:011
2847191390,3ptp4l0-21swapper/307:58:003
2847191390,3ptp4l0-21swapper/107:20:041
2847191390,3ptp4l0-21swapper/009:10:320
2847191380,4ptp4l0-21swapper/312:10:323
2847191380,4ptp4l0-21swapper/310:55:223
2847191380,4ptp4l0-21swapper/310:53:563
2847191380,4ptp4l0-21swapper/310:06:063
2847191380,4ptp4l0-21swapper/308:16:423
2847191380,4ptp4l0-21swapper/307:36:053
2847191380,4ptp4l0-21swapper/307:27:303
2847191380,4ptp4l0-21swapper/307:13:493
2847191380,3ptp4l0-21swapper/311:55:093
2847191380,3ptp4l0-21swapper/310:40:153
2847191380,3ptp4l0-21swapper/310:31:473
2847191380,3ptp4l0-21swapper/309:21:513
2847191380,3ptp4l0-21swapper/308:49:403
2847191380,3ptp4l0-21swapper/307:20:063
2847191370,4ptp4l0-21swapper/311:01:523
2847191370,4ptp4l0-21swapper/309:31:273
2847191370,4ptp4l0-21swapper/309:26:233
2847191370,3ptp4l0-21swapper/310:18:423
2847191370,3ptp4l0-21swapper/309:05:153
2847191360,4ptp4l1369199cyclictest11:32:493
2847191360,3ptp4l0-21swapper/310:21:003
2847191360,3ptp4l0-21swapper/307:52:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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