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2025-11-22 - 18:04
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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 highest latencies:
System rackdslot1.osadl.org (updated Sat Nov 22, 2025 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191670,4ptp4l0-21swapper/108:50:161
2847191660,3ptp4l2352-21memory12:00:211
2847191640,3ptp4l13926-21meminfo12:25:210
2847191620,17ptp4l0-21swapper/011:20:120
2847191610,4ptp4l0-21swapper/109:45:191
2847191610,18ptp4l0-21swapper/012:15:430
2847191590,4ptp4l0-21swapper/011:30:200
2847191590,4ptp4l0-21swapper/007:10:130
26936995928,5cyclictest33-21ksoftirqd/211:10:262
2847191580,4ptp4l0-21swapper/311:00:443
2847191580,4ptp4l0-21swapper/010:10:370
2847191580,3ptp4l0-21swapper/008:50:180
26936995829,9cyclictest33-21ksoftirqd/207:25:012
2847191570,4ptp4l0-21swapper/110:13:161
2847191570,4ptp4l0-21swapper/109:35:301
2847191570,3ptp4l0-21swapper/008:46:570
2847191560,4ptp4l0-21swapper/010:35:410
2847191560,12ptp4l0-21swapper/110:35:161
26936995523,4cyclictest33-21ksoftirqd/210:59:592
2847191540,4ptp4l0-21swapper/307:57:593
2847191540,4ptp4l0-21swapper/110:26:561
2847191540,3ptp4l26435-21ls08:15:271
2847191540,3ptp4l0-21swapper/108:01:511
2847191540,3ptp4l0-21swapper/108:01:511
2847191540,11ptp4l0-21swapper/011:55:150
321932530,5sleep30-21swapper/307:20:213
2847191530,3ptp4l0-21swapper/109:25:351
2847191530,3ptp4l0-21swapper/108:26:101
2847191530,11ptp4l26172-21ls07:05:300
315582520,5sleep10-21swapper/111:55:161
2847191520,4ptp4l0-21swapper/112:34:541
2847191520,4ptp4l0-21swapper/111:52:361
2847191520,4ptp4l0-21swapper/110:22:431
2847191520,4ptp4l0-21swapper/107:40:211
2847191520,4ptp4l0-21swapper/010:33:050
26936995223,4cyclictest33-21ksoftirqd/210:54:592
26936995221,5cyclictest33-21ksoftirqd/209:35:002
2847191510,4ptp4l0-21swapper/109:14:191
2847191510,4ptp4l0-21swapper/107:12:571
2847191510,3ptp4l0-21swapper/112:14:271
2847191510,11ptp4l0-21swapper/109:04:181
26936995124,6cyclictest33-21ksoftirqd/209:45:012
26936995122,5cyclictest33-21ksoftirqd/212:25:012
2847191500,4ptp4l0-21swapper/110:51:161
2847191500,3ptp4l0-21swapper/310:33:573
2847191500,3ptp4l0-21swapper/009:09:420
2693699506,8cyclictest33-21ksoftirqd/211:05:302
2693699506,8cyclictest33-21ksoftirqd/211:05:292
26936995016,4cyclictest33-21ksoftirqd/212:10:302
26936995015,4cyclictest33-21ksoftirqd/207:45:212
2693699500,7cyclictest33-21ksoftirqd/210:35:002
2847191490,4ptp4l0-21swapper/111:14:291
2847191490,4ptp4l0-21swapper/107:19:471
2847191490,4ptp4l0-21swapper/107:19:471
2693699495,8cyclictest33-21ksoftirqd/209:35:192
2693699492,28cyclictest0-21swapper/209:25:202
2847191480,4ptp4l0-21swapper/110:40:441
2847191480,4ptp4l0-21swapper/107:30:351
2847191480,2ptp4l0-21swapper/011:18:530
2693699481,7cyclictest0-21swapper/212:30:292
2847191470,4ptp4l0-21swapper/208:01:122
2847191470,4ptp4l0-21swapper/208:01:112
2847191470,13ptp4l0-21swapper/212:00:002
2693699475,9cyclictest33-21ksoftirqd/210:15:012
2693699475,4cyclictest33-21ksoftirqd/211:24:592
2693699474,5cyclictest33-21ksoftirqd/210:15:272
2693699473,7cyclictest0-21swapper/212:00:322
2693699473,5cyclictest33-21ksoftirqd/210:35:182
2693699472,8cyclictest0-21swapper/211:25:222
2693699471,7cyclictest0-21swapper/210:20:182
2693699471,6cyclictest0-21swapper/211:50:342
2693699470,6cyclictest33-21ksoftirqd/208:35:242
2693699470,6cyclictest33-21ksoftirqd/207:40:172
2847191460,4ptp4l0-21swapper/111:43:141
2693699466,8cyclictest33-21ksoftirqd/208:30:162
2693699466,8cyclictest33-21ksoftirqd/208:30:152
2693699465,9cyclictest33-21ksoftirqd/208:45:292
2693699464,5cyclictest33-21ksoftirqd/209:50:312
2693699463,7cyclictest0-21swapper/211:38:252
2693699463,7cyclictest0-21swapper/211:38:252
2693699462,6cyclictest33-21ksoftirqd/209:20:162
2693699461,6cyclictest33-21ksoftirqd/210:40:222
2693699461,6cyclictest0-21swapper/211:15:282
2693699460,6cyclictest33-21ksoftirqd/212:35:292
2847191450,9ptp4l0-21swapper/210:45:062
2847191450,5ptp4l0-21swapper/010:55:240
2847191450,3ptp4l0-21swapper/009:36:120
2693699455,5cyclictest33-21ksoftirqd/211:30:152
2693699454,8cyclictest33-21ksoftirqd/209:45:182
2693699454,7cyclictest33-21ksoftirqd/207:55:162
2693699453,5cyclictest33-21ksoftirqd/208:25:232
2693699452,7cyclictest0-21swapper/212:25:152
2693699452,7cyclictest0-21swapper/212:05:202
2693699452,7cyclictest0-21swapper/211:00:212
2693699452,7cyclictest0-21swapper/209:10:152
2693699452,6cyclictest33-21ksoftirqd/208:05:152
2693699452,5cyclictest33-21ksoftirqd/210:00:202
2693699452,5cyclictest33-21ksoftirqd/210:00:202
2693699451,6cyclictest33-21ksoftirqd/210:05:142
2693699451,6cyclictest33-21ksoftirqd/207:30:542
2693699451,6cyclictest0-21swapper/211:45:292
26936994515,5cyclictest33-21ksoftirqd/207:35:182
2693699450,8cyclictest33-21ksoftirqd/208:55:252
2693699450,6cyclictest33-21ksoftirqd/209:55:202
2693699450,6cyclictest33-21ksoftirqd/208:40:212
2847191440,6ptp4l3692-21/usr/sbin/munin12:05:131
2847191440,4ptp4l11024-21meminfo11:10:200
2847191440,4ptp4l0-21swapper/111:29:451
2847191440,3ptp4l12382-21apt-get11:15:151
2847191440,3ptp4l0-21swapper/308:00:353
2847191440,3ptp4l0-21swapper/308:00:353
2847191440,3ptp4l0-21swapper/007:15:380
2847191440,3ptp4l0-21swapper/007:15:380
2847191440,15ptp4l9-21ksoftirqd/008:39:510
2693699442,7cyclictest0-21swapper/209:15:202
2693699442,26cyclictest0-21swapper/211:40:212
2693699441,6cyclictest0-21swapper/207:50:212
2693699440,12cyclictest33-21ksoftirqd/208:15:262
2847191430,8ptp4l30713-21sed10:45:010
2847191430,6ptp4l26338-21taskset07:06:091
2847191430,5ptp4l0-21swapper/311:30:133
2847191430,4ptp4l9951-21hddtemp_smartct10:00:180
2847191430,4ptp4l9951-21hddtemp_smartct10:00:170
2847191430,4ptp4l7136-21ntp_states12:10:250
2847191430,4ptp4l24527-21users09:20:290
2847191430,4ptp4l0-21swapper/310:18:493
2847191430,3ptp4l29288-21apt-get07:15:142
2847191430,3ptp4l29288-21apt-get07:15:132
2847191430,3ptp4l0-21swapper/009:45:370
2693699435,5cyclictest33-21ksoftirqd/212:15:212
2693699433,7cyclictest33-21ksoftirqd/210:25:212
2693599433,38cyclictest0-21swapper/112:40:001
2847191420,8ptp4l0-21swapper/208:10:322
2847191420,7ptp4l0-21swapper/307:05:263
2847191420,6ptp4l11712-21/usr/sbin/munin07:45:231
2847191420,5ptp4l17883-21/usr/sbin/munin10:15:291
2847191420,5ptp4l0-21swapper/308:05:293
2847191420,5ptp4l0-21swapper/008:20:250
2847191420,4ptp4l8216-21ls09:55:240
2847191420,4ptp4l27046-21diskstats11:45:210
2847191420,4ptp4l0-21swapper/310:49:573
2847191420,4ptp4l0-21swapper/309:51:593
41798410,2rtkit-daemon416-21rtkit-daemon08:58:333
2849491410,25getstats0-21swapper/008:58:210
2847191410,5ptp4l0-21swapper/312:07:053
2847191410,5ptp4l0-21swapper/311:50:303
2847191410,4ptp4l7333-21irqstats07:35:210
2847191410,4ptp4l32535-21irqstats07:20:240
2847191410,4ptp4l32197-21python10:45:290
2847191410,4ptp4l27689-21memory11:45:261
2847191410,4ptp4l23029-21meminfo11:35:211
2847191410,4ptp4l23029-21meminfo11:35:211
2847191410,4ptp4l22651-21iostat_ios11:35:190
2847191410,4ptp4l22651-21iostat_ios11:35:190
2847191410,4ptp4l19380-21/usr/sbin/munin09:10:230
2847191410,4ptp4l19330-21/usr/sbin/munin08:00:250
2847191410,4ptp4l19330-21/usr/sbin/munin08:00:250
2847191410,4ptp4l14158-21iostat09:00:190
2847191410,4ptp4l0-21swapper/310:36:593
2847191410,4ptp4l0-21swapper/309:20:223
2847191410,4ptp4l0-21swapper/309:00:243
2847191410,4ptp4l0-21swapper/209:00:012
2847191410,4ptp4l0-21swapper/112:26:461
2847191410,4ptp4l0-21swapper/111:05:291
2847191410,4ptp4l0-21swapper/111:05:291
2847191410,4ptp4l0-21swapper/109:53:461
2847191410,4ptp4l0-21swapper/008:25:210
2847191410,4ptp4l0-21swapper/007:50:310
2847191410,3ptp4l7129-21users11:00:280
2847191410,3ptp4l32703-21diskstats09:40:170
2847191410,3ptp4l32260-21iostat_ios07:20:221
2847191410,3ptp4l31221-21perl10:45:191
2847191410,3ptp4l27344-21apt-get08:20:133
2847191410,3ptp4l19572-21iostat_ios10:20:190
2847191410,3ptp4l11093-21hddtemp_smartct12:20:171
2847191410,3ptp4l0-21swapper/107:37:251
2693699414,5cyclictest33-21ksoftirqd/207:10:162
2693699412,5cyclictest33-21ksoftirqd/207:25:162
2847191400,5ptp4l2693499cyclictest12:05:250
2847191400,5ptp4l0-21swapper/111:30:211
2847191400,4ptp4l8612-21irqstats11:05:200
2847191400,4ptp4l8612-21irqstats11:05:200
2847191400,4ptp4l7201-21iostat08:45:181
2847191400,4ptp4l5987-21/usr/sbin/munin11:00:181
2847191400,4ptp4l5520-21/usr/sbin/munin07:30:270
2847191400,4ptp4l22812-21latency_hist09:20:001
2847191400,4ptp4l17662-21df11:25:140
2847191400,4ptp4l15714-21hddtemp_smartct12:30:190
2847191400,4ptp4l0-21swapper/312:14:593
2847191400,4ptp4l0-21swapper/312:03:053
2847191400,4ptp4l0-21swapper/311:18:313
2847191400,4ptp4l0-21swapper/310:23:593
2847191400,4ptp4l0-21swapper/310:13:123
2847191400,4ptp4l0-21swapper/308:32:543
2847191400,4ptp4l0-21swapper/308:32:543
2847191400,4ptp4l0-21swapper/208:50:132
2847191400,4ptp4l0-21swapper/110:55:151
2847191400,4ptp4l0-21swapper/109:20:281
2847191400,4ptp4l0-21swapper/108:05:261
2847191400,4ptp4l0-21swapper/012:00:230
2847191400,4ptp4l0-21swapper/011:50:240
2847191400,4ptp4l0-21swapper/010:50:150
2847191400,4ptp4l0-21swapper/010:15:210
2847191400,4ptp4l0-21swapper/010:05:170
2847191400,4ptp4l0-21swapper/009:30:200
2847191400,4ptp4l0-21swapper/009:25:340
2847191400,4ptp4l0-21swapper/008:34:400
2847191400,4ptp4l0-21swapper/008:34:400
2847191400,4ptp4l0-21swapper/007:58:080
2847191400,4ptp4l0-21swapper/007:45:210
2847191400,4ptp4l0-21swapper/007:44:180
2847191400,3ptp4l539-21meminfo08:30:211
2847191400,3ptp4l539-21meminfo08:30:211
2847191400,3ptp4l4524-21df08:40:150
2847191400,3ptp4l3323-21users07:25:291
2847191400,3ptp4l23548-21irqstats08:10:210
2847191400,3ptp4l20953-21hddtemp_smartct09:15:190
2847191400,3ptp4l14945-21ls07:50:321
2847191400,3ptp4l1293-21snmpd09:18:003
2847191400,3ptp4l11235-21iostat_ios12:20:190
2847191400,3ptp4l0-21swapper/312:31:353
2847191400,3ptp4l0-21swapper/312:27:073
2847191400,3ptp4l0-21swapper/311:07:413
2847191400,3ptp4l0-21swapper/311:07:413
2847191400,3ptp4l0-21swapper/008:15:300
2693699402,5cyclictest33-21ksoftirqd/208:25:012
2693699401,6cyclictest33-21ksoftirqd/209:05:302
2847191390,5ptp4l0-21swapper/207:05:252
2847191390,4ptp4l431-21/usr/sbin/munin09:40:191
2847191390,4ptp4l22899-21unixbench_multi10:25:293
2847191390,4ptp4l17906-21/usr/sbin/munin12:35:170
2847191390,4ptp4l0-21swapper/312:21:093
2847191390,4ptp4l0-21swapper/312:19:453
2847191390,4ptp4l0-21swapper/311:21:593
2847191390,4ptp4l0-21swapper/311:10:533
2847191390,4ptp4l0-21swapper/310:40:233
2847191390,4ptp4l0-21swapper/309:49:053
2847191390,4ptp4l0-21swapper/112:18:021
2847191390,4ptp4l0-21swapper/111:20:151
2847191390,4ptp4l0-21swapper/110:30:241
2847191390,4ptp4l0-21swapper/109:34:581
2847191390,4ptp4l0-21swapper/109:07:381
2847191390,4ptp4l0-21swapper/108:43:301
2847191390,4ptp4l0-21swapper/108:35:171
2847191390,4ptp4l0-21swapper/108:22:131
2847191390,4ptp4l0-21swapper/108:10:211
2847191390,4ptp4l0-21swapper/008:05:150
2847191390,4ptp4l0-21swapper/007:25:250
2847191390,3ptp4l0-21swapper/312:37:413
2847191390,3ptp4l0-21swapper/311:59:353
2847191390,3ptp4l0-21swapper/110:05:191
2847191390,3ptp4l0-21swapper/108:55:281
2847191390,3ptp4l0-21swapper/011:42:310
2847191390,3ptp4l0-21swapper/010:27:140
2847191390,2ptp4l0-21swapper/308:39:083
2847191380,4ptp4l0-21swapper/311:27:493
2847191380,4ptp4l0-21swapper/310:55:233
2847191380,4ptp4l0-21swapper/309:38:393
2847191380,4ptp4l0-21swapper/309:26:503
2847191380,4ptp4l0-21swapper/308:50:043
2847191380,4ptp4l0-21swapper/307:45:283
2847191380,4ptp4l0-21swapper/109:55:291
2847191380,3ptp4l41-21ksoftirqd/307:25:143
2847191380,3ptp4l24404-21apt-get11:40:123
2847191380,3ptp4l0-21swapper/311:45:583
2847191380,3ptp4l0-21swapper/311:35:513
2847191380,3ptp4l0-21swapper/311:35:513
2847191380,3ptp4l0-21swapper/308:19:173
2847191380,3ptp4l0-21swapper/110:02:431
2847191380,3ptp4l0-21swapper/110:02:431
2847191380,3ptp4l0-21swapper/107:55:201
2847191380,3ptp4l0-21swapper/009:50:270
2847191370,4ptp4l0-21swapper/310:54:593
2847191370,3ptp4l0-21swapper/310:06:363
2847191360,4ptp4l0-21swapper/309:12:483
2847191360,4ptp4l0-21swapper/307:15:143
2847191360,4ptp4l0-21swapper/307:15:143
2847191360,3ptp4l0-21swapper/309:55:543
2847191360,3ptp4l0-21swapper/309:44:593
2847191360,3ptp4l0-21swapper/307:51:033
2847191360,3ptp4l0-21swapper/307:40:403
2847191360,3ptp4l0-21swapper/307:37:393
2847191350,4ptp4l0-21swapper/308:46:403
2847191350,3ptp4l0-21swapper/308:13:023
2847191340,3ptp4l0-21swapper/308:25:193
2847191330,3ptp4l0-21swapper/307:11:093
2847191290,3ptp4l0-21swapper/310:04:203
2847191290,3ptp4l0-21swapper/310:04:203
26937992823,3cyclictest41-21ksoftirqd/308:42:453
26937992823,3cyclictest41-21ksoftirqd/307:31:243
26937992520,3cyclictest41-21ksoftirqd/309:30:393
2847191240,4ptp4l0-21swapper/309:05:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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