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2025-09-03 - 00:24
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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 Tue Sep 02, 2025 12:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1205621750,6sleep2867999cyclictest08:25:002
648721550,3sleep30-21swapper/309:20:223
3212421430,2sleep20-21swapper/211:25:182
2847191840,16ptp4l8007-21users07:05:270
77672800,4sleep20-21swapper/207:05:252
2847191720,3ptp4l31179-21df10:15:131
2847191690,2ptp4l24544-21strings07:40:213
2847191670,3ptp4l22675-21ls07:35:271
8677996623,4cyclictest9-21ksoftirqd/007:15:200
8679996430,6cyclictest33-21ksoftirqd/207:55:032
867999641,8cyclictest33-21ksoftirqd/207:15:192
2847191610,4ptp4l0-21swapper/109:55:161
8679996027,11cyclictest33-21ksoftirqd/207:35:492
8679996026,5cyclictest33-21ksoftirqd/207:15:002
8679996025,3cyclictest33-21ksoftirqd/208:45:182
2847191600,23ptp4l25-21ksoftirqd/110:05:201
8679995932,7cyclictest33-21ksoftirqd/210:40:002
8679995926,6cyclictest33-21ksoftirqd/211:57:362
2847191590,4ptp4l0-21swapper/010:00:200
2847191590,3ptp4l0-21swapper/110:55:011
2847191590,3ptp4l0-21swapper/110:55:011
2847191590,3ptp4l0-21swapper/011:20:240
8679995828,6cyclictest33-21ksoftirqd/211:25:012
8679995823,2cyclictest121rcu_preempt12:16:012
2847191580,4ptp4l0-21swapper/210:45:292
2847191580,4ptp4l0-21swapper/010:27:350
2847191580,4ptp4l0-21swapper/010:27:350
2847191580,4ptp4l0-21swapper/009:50:250
2847191580,3ptp4l0-21swapper/107:44:391
8679995727,6cyclictest33-21ksoftirqd/208:10:122
8679995725,7cyclictest33-21ksoftirqd/211:36:432
8679995722,2cyclictest121rcu_preempt12:28:232
2847191570,5ptp4l0-21swapper/107:15:251
2847191570,4ptp4l0-21swapper/108:17:081
2847191570,3ptp4l0-21swapper/310:50:253
2847191570,3ptp4l0-21swapper/111:05:281
8679995626,6cyclictest33-21ksoftirqd/212:10:242
2847191560,3ptp4l0-21swapper/310:44:403
2847191560,3ptp4l0-21swapper/308:45:153
8679995535,3cyclictest33-21ksoftirqd/212:20:102
8679995526,5cyclictest33-21ksoftirqd/208:00:202
8679995522,6cyclictest33-21ksoftirqd/210:20:002
2847191550,6ptp4l0-21swapper/107:06:421
2847191550,4ptp4l0-21swapper/110:45:251
2847191550,3ptp4l0-21swapper/107:52:501
8679995423,6cyclictest33-21ksoftirqd/207:50:162
8679995422,6cyclictest33-21ksoftirqd/209:55:132
8679995422,6cyclictest33-21ksoftirqd/209:35:272
8679995417,8cyclictest33-21ksoftirqd/212:37:022
8679995417,6cyclictest33-21ksoftirqd/209:20:002
8679995417,6cyclictest33-21ksoftirqd/209:20:002
2847191540,4ptp4l0-21swapper/310:25:223
2847191540,4ptp4l0-21swapper/310:25:213
2847191540,4ptp4l0-21swapper/107:25:231
2847191540,3ptp4l0-21swapper/011:00:190
2847191540,3ptp4l0-21swapper/007:50:130
8679995326,10cyclictest33-21ksoftirqd/211:30:132
8679995322,5cyclictest33-21ksoftirqd/211:00:132
2847191530,4ptp4l0-21swapper/110:02:591
2847191530,4ptp4l0-21swapper/107:49:001
2847191530,3ptp4l0-21swapper/110:10:101
8679995224,7cyclictest33-21ksoftirqd/210:10:152
8679995221,5cyclictest33-21ksoftirqd/207:30:132
8679995217,8cyclictest33-21ksoftirqd/208:07:582
2847191520,4ptp4l0-21swapper/308:57:293
2847191520,4ptp4l0-21swapper/011:12:140
2847191520,3ptp4l0-21swapper/112:19:541
2847191520,3ptp4l0-21swapper/111:28:451
8679995126,7cyclictest33-21ksoftirqd/209:00:212
8679995124,3cyclictest33-21ksoftirqd/208:20:002
8679995118,4cyclictest33-21ksoftirqd/207:45:142
8679995117,4cyclictest33-21ksoftirqd/210:25:142
8679995117,4cyclictest33-21ksoftirqd/210:25:142
8677995119,4cyclictest9-21ksoftirqd/007:27:130
2847191510,4ptp4l0-21swapper/308:08:003
2847191510,4ptp4l0-21swapper/210:23:402
2847191510,4ptp4l0-21swapper/108:47:351
2847191510,4ptp4l0-21swapper/008:13:000
2847191510,3ptp4l0-21swapper/112:20:461
8679995024,3cyclictest33-21ksoftirqd/209:10:312
8679995023,3cyclictest33-21ksoftirqd/211:10:252
8679995022,5cyclictest33-21ksoftirqd/209:45:202
8679995022,3cyclictest33-21ksoftirqd/208:55:252
8679995021,6cyclictest33-21ksoftirqd/208:30:142
8679995019,7cyclictest33-21ksoftirqd/211:50:002
8679995019,5cyclictest33-21ksoftirqd/209:05:252
2847191500,4ptp4l0-21swapper/112:32:231
2847191500,4ptp4l0-21swapper/112:29:471
2847191500,4ptp4l0-21swapper/107:55:271
2847191500,4ptp4l0-21swapper/011:44:060
2847191500,3ptp4l1794-21llvmpipe-111:26:590
2847191500,3ptp4l0-21swapper/110:50:331
8679994923,3cyclictest33-21ksoftirqd/210:40:222
8679994919,6cyclictest33-21ksoftirqd/208:40:312
8679994918,4cyclictest33-21ksoftirqd/211:20:012
8679994915,5cyclictest33-21ksoftirqd/209:50:132
867799494,6cyclictest121rcu_preempt11:40:000
8677994923,3cyclictest9-21ksoftirqd/011:55:000
2847191490,4ptp4l0-21swapper/108:33:391
2847191490,4ptp4l0-21swapper/108:05:311
2847191490,4ptp4l0-21swapper/107:30:291
2847191490,3ptp4l0-21swapper/109:08:421
2847191490,3ptp4l0-21swapper/010:20:140
867999486,3cyclictest33-21ksoftirqd/212:35:002
8679994823,6cyclictest33-21ksoftirqd/209:25:172
8679994820,8cyclictest33-21ksoftirqd/209:40:142
8679994814,5cyclictest33-21ksoftirqd/212:00:192
8679994810,3cyclictest33-21ksoftirqd/210:30:372
8677994813,6cyclictest9-21ksoftirqd/008:10:000
2847191480,9ptp4l41-21ksoftirqd/308:13:373
2847191480,4ptp4l0-21swapper/307:24:133
2847191480,4ptp4l0-21swapper/111:46:331
2847191480,4ptp4l0-21swapper/109:28:471
2847191480,3ptp4l0-21swapper/210:05:182
2847191480,3ptp4l0-21swapper/007:39:080
8679994723,7cyclictest33-21ksoftirqd/210:05:012
8679994721,4cyclictest33-21ksoftirqd/211:50:132
8677994715,4cyclictest9-21ksoftirqd/009:30:590
8677994715,3cyclictest9-21ksoftirqd/008:03:520
2847191470,4ptp4l0-21swapper/308:01:483
2847191470,4ptp4l0-21swapper/012:30:020
2847191470,3ptp4l0-21swapper/110:35:091
8679994617,8cyclictest33-21ksoftirqd/212:10:002
8679994616,6cyclictest33-21ksoftirqd/208:40:012
8679994613,7cyclictest33-21ksoftirqd/211:42:132
8677994619,6cyclictest9-21ksoftirqd/010:34:130
8677994612,8cyclictest9-21ksoftirqd/012:11:140
2847191460,5ptp4l0-21swapper/012:35:200
2847191460,3ptp4l0-21swapper/111:53:111
2847191460,3ptp4l0-21swapper/109:16:101
2847191460,3ptp4l0-21swapper/109:16:091
2847191460,10ptp4l0-21swapper/010:44:410
8679994527,10cyclictest33-21ksoftirqd/210:58:162
8679994527,10cyclictest33-21ksoftirqd/210:58:162
867999452,5cyclictest33-21ksoftirqd/207:25:592
8679994521,7cyclictest33-21ksoftirqd/207:40:572
8679994517,3cyclictest33-21ksoftirqd/211:07:402
8679994516,5cyclictest33-21ksoftirqd/207:20:412
8677994517,3cyclictest9-21ksoftirqd/008:18:440
8677994514,3cyclictest9-21ksoftirqd/010:12:380
2847191450,9ptp4l0-21swapper/209:32:072
2847191450,9ptp4l0-21swapper/209:21:552
2847191450,3ptp4l12106-21apt-get08:25:142
867999442,4cyclictest0-21swapper/210:50:492
8677994417,3cyclictest9-21ksoftirqd/009:37:470
8677994415,4cyclictest9-21ksoftirqd/008:43:530
2847191440,8ptp4l0-21swapper/208:53:102
2847191440,4ptp4l0-21swapper/111:41:261
2847191440,3ptp4l0-21swapper/112:38:561
2847191440,11ptp4l0-21swapper/008:54:580
867799436,6cyclictest9-21ksoftirqd/008:35:000
8677994316,3cyclictest9-21ksoftirqd/010:54:300
8677994315,4cyclictest9-21ksoftirqd/007:25:000
8677994314,3cyclictest9-21ksoftirqd/012:20:010
8677994313,4cyclictest9-21ksoftirqd/009:26:420
8677994312,5cyclictest9-21ksoftirqd/007:55:040
8677994311,3cyclictest9-21ksoftirqd/007:30:160
2847191430,4ptp4l29026-21apt-get11:20:121
2847191430,4ptp4l24959-21iostat_ios11:10:191
2847191430,4ptp4l0-21swapper/109:11:181
2847191430,4ptp4l0-21swapper/011:30:140
2847191430,3ptp4l28539-21apt-get09:00:143
2847191430,3ptp4l22068-21apt-get11:05:123
867799428,4cyclictest9-21ksoftirqd/007:10:240
8677994216,6cyclictest9-21ksoftirqd/009:20:140
8677994215,3cyclictest9-21ksoftirqd/012:05:100
8677994213,4cyclictest9-21ksoftirqd/011:00:010
8677994213,4cyclictest9-21ksoftirqd/011:00:010
8677994212,4cyclictest9-21ksoftirqd/008:46:460
2849491420,10getstats0-21swapper/312:09:183
2847191420,6ptp4l13462-21python08:25:270
2847191420,6ptp4l0-21swapper/108:51:141
2847191420,5ptp4l19264-21df08:40:141
2847191420,5ptp4l0-21swapper/012:25:220
2847191420,5ptp4l0-21swapper/008:20:490
2847191420,4ptp4l9794-21apt-get08:20:123
2847191420,4ptp4l5892-21hddtemp_smartct09:20:161
2847191420,4ptp4l5506-21users11:35:291
2847191420,4ptp4l17683-21meminfo08:35:191
2847191420,4ptp4l14827-21users11:55:281
2847191420,4ptp4l0-21swapper/012:22:090
2847191420,4ptp4l0-21swapper/010:47:560
2847191420,4ptp4l0-21swapper/010:19:380
2847191420,3ptp4l0-21swapper/308:16:443
867799411,3cyclictest121rcu_preempt07:42:150
2847191410,5ptp4l0-21swapper/107:20:201
2847191410,4ptp4l25-21ksoftirqd/107:10:221
2847191410,4ptp4l19145-21python12:05:271
2847191410,4ptp4l0-21swapper/311:16:083
2847191410,4ptp4l0-21swapper/111:00:151
2847191410,4ptp4l0-21swapper/109:52:491
2847191410,4ptp4l0-21swapper/012:00:120
2847191410,4ptp4l0-21swapper/010:05:190
2847191410,4ptp4l0-21swapper/009:45:200
2847191410,4ptp4l0-21swapper/009:00:580
2847191410,4ptp4l0-21swapper/008:35:180
2847191410,3ptp4l30848-21apt-get09:05:110
2847191410,3ptp4l1735-21meminfo09:10:240
2847191410,3ptp4l15362-21iostat_ios09:40:180
867899402,36cyclictest0-21swapper/109:40:501
2849491400,9getstats0-21swapper/308:26:453
2847191400,4ptp4l41-21ksoftirqd/309:55:183
2847191400,4ptp4l26247-21sed08:55:140
2847191400,4ptp4l24020-21/usr/sbin/munin10:00:283
2847191400,4ptp4l18217-21/usr/sbin/munin07:25:283
2847191400,4ptp4l17292-21/usr/sbin/munin09:45:151
2847191400,4ptp4l0-21swapper/310:55:153
2847191400,4ptp4l0-21swapper/310:55:143
2847191400,4ptp4l0-21swapper/310:45:273
2847191400,4ptp4l0-21swapper/310:34:163
2847191400,4ptp4l0-21swapper/310:10:203
2847191400,4ptp4l0-21swapper/309:43:043
2847191400,4ptp4l0-21swapper/309:28:403
2847191400,4ptp4l0-21swapper/308:40:543
2847191400,4ptp4l0-21swapper/307:32:573
2847191400,4ptp4l0-21swapper/112:12:501
2847191400,4ptp4l0-21swapper/111:15:061
2847191400,4ptp4l0-21swapper/110:27:241
2847191400,4ptp4l0-21swapper/110:27:231
2847191400,4ptp4l0-21swapper/110:20:191
2847191400,4ptp4l0-21swapper/109:38:291
2847191400,4ptp4l0-21swapper/109:30:591
2847191400,4ptp4l0-21swapper/109:01:241
2847191400,4ptp4l0-21swapper/108:56:211
2847191400,4ptp4l0-21swapper/011:55:250
2847191400,4ptp4l0-21swapper/011:45:170
2847191400,4ptp4l0-21swapper/011:05:020
2847191400,4ptp4l0-21swapper/010:36:240
2847191400,4ptp4l0-21swapper/009:55:140
2847191400,4ptp4l0-21swapper/009:15:260
2847191400,4ptp4l0-21swapper/009:15:260
2847191400,3ptp4l6020-21hddtemp_smartct10:30:191
2847191400,3ptp4l30543-21meminfo12:30:203
2847191400,3ptp4l2096-21iostat_ios11:30:191
2847191400,3ptp4l0-21swapper/311:25:293
2847191400,2ptp4l25427-21strings11:10:223
867799397,6cyclictest9-21ksoftirqd/011:15:180
2847191390,5ptp4l0-21swapper/312:16:103
2847191390,4ptp4l0-21swapper/312:20:133
2847191390,4ptp4l0-21swapper/311:42:313
2847191390,4ptp4l0-21swapper/310:40:013
2847191390,4ptp4l0-21swapper/310:20:153
2847191390,4ptp4l0-21swapper/310:17:143
2847191390,4ptp4l0-21swapper/310:06:553
2847191390,4ptp4l0-21swapper/308:51:313
2847191390,4ptp4l0-21swapper/307:56:093
2847191390,4ptp4l0-21swapper/307:48:573
2847191390,4ptp4l0-21swapper/112:02:071
2847191390,4ptp4l0-21swapper/110:40:271
2847191390,4ptp4l0-21swapper/108:27:361
2847191390,4ptp4l0-21swapper/108:10:101
2847191390,4ptp4l0-21swapper/108:00:401
2847191390,4ptp4l0-21swapper/007:45:140
2847191390,3ptp4l0-21swapper/311:45:273
2847191390,3ptp4l0-21swapper/309:45:203
2847191390,3ptp4l0-21swapper/108:20:041
2849491380,10getstats0-21swapper/312:13:253
2847191380,4ptp4l0-21swapper/312:35:203
2847191380,4ptp4l0-21swapper/312:25:053
2847191380,4ptp4l0-21swapper/309:51:593
2847191380,4ptp4l0-21swapper/309:18:063
2847191380,4ptp4l0-21swapper/309:18:063
2847191380,4ptp4l0-21swapper/308:39:343
2847191380,4ptp4l0-21swapper/308:34:123
2847191380,4ptp4l0-21swapper/307:51:043
2847191380,4ptp4l0-21swapper/307:35:253
2847191380,4ptp4l0-21swapper/307:15:243
2847191380,3ptp4l0-21swapper/311:20:153
2847191380,3ptp4l0-21swapper/309:34:543
2847191380,3ptp4l0-21swapper/309:05:203
2847191370,5ptp4l0-21swapper/312:02:233
2847191370,3ptp4l0-21swapper/311:35:233
2847191370,3ptp4l0-21swapper/311:30:493
2847191370,3ptp4l0-21swapper/309:12:133
2847191360,4ptp4l0-21swapper/311:57:233
2847191360,3ptp4l0-21swapper/311:50:253
2847191360,3ptp4l0-21swapper/309:35:353
2847191340,4ptp4l0-21swapper/311:02:353
8680993227,3cyclictest41-21ksoftirqd/307:10:183
2849691243,4phc2sys0-21swapper/307:08:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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