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2025-11-09 - 13:01
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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 highest latencies:
System rackdslot1.osadl.org (updated Sun Nov 09, 2025 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191700,2ptp4l121rcu_preempt19:57:280
2847191690,4ptp4l71450irq/146-enp4s0-23:38:011
2847191670,4ptp4l0-21swapper/222:00:482
2847191670,4ptp4l0-21swapper/221:35:252
2847191670,4ptp4l0-21swapper/121:20:301
2847191670,3ptp4l0-21swapper/123:43:211
2847191670,2ptp4l121rcu_preempt23:11:013
2847191660,5ptp4l2074399cyclictest21:05:143
2847191660,5ptp4l2074399cyclictest21:05:143
2847191660,4ptp4l4101-21diskstats23:10:192
2847191660,4ptp4l0-21swapper/222:20:572
2847191650,4ptp4l0-21swapper/222:38:432
2847191650,4ptp4l0-21swapper/222:38:432
2847191650,4ptp4l0-21swapper/221:41:122
2847191650,4ptp4l0-21swapper/022:02:390
2847191650,3ptp4l0-21swapper/223:32:442
2847191640,6ptp4l9-21ksoftirqd/021:55:150
2847191640,4ptp4l1317-21lldpd20:28:322
2847191640,4ptp4l0-21swapper/220:59:452
2847191640,4ptp4l0-21swapper/021:34:410
2847191630,4ptp4l0-21swapper/222:57:182
2847191630,4ptp4l0-21swapper/221:20:242
2847191630,3ptp4l1293-21snmpd00:35:150
2847191630,3ptp4l0-21swapper/222:33:032
2847191630,2ptp4l1293-21snmpd22:24:020
2847191620,7ptp4l1317-21lldpd19:15:572
2847191620,4ptp4l1293-21snmpd22:50:470
2847191620,4ptp4l0-21swapper/222:27:462
2847191620,4ptp4l0-21swapper/220:37:042
2847191620,4ptp4l0-21swapper/200:10:512
2847191620,4ptp4l0-21swapper/120:20:001
2847191620,4ptp4l0-21swapper/100:36:161
2847191620,4ptp4l0-21swapper/023:37:080
2847191620,3ptp4l0-21swapper/223:19:372
2847191620,3ptp4l0-21swapper/023:46:190
2847191610,5ptp4l0-21swapper/222:20:002
2847191610,4ptp4l0-21swapper/222:52:212
2847191610,4ptp4l0-21swapper/200:21:212
2847191610,4ptp4l0-21swapper/019:14:040
2847191610,3ptp4l1317-21lldpd22:32:133
2847191610,3ptp4l1293-21snmpd23:49:091
2847191610,3ptp4l1293-21snmpd23:03:352
2847191610,3ptp4l0-21swapper/322:09:053
2847191610,3ptp4l0-21swapper/123:11:551
2847191610,3ptp4l0-21swapper/022:39:480
2847191610,3ptp4l0-21swapper/022:39:480
2847191610,3ptp4l0-21swapper/022:09:360
2847191600,5ptp4l0-21swapper/300:00:573
2847191600,5ptp4l0-21swapper/000:01:050
2847191600,4ptp4l1317-21lldpd00:05:321
2847191600,4ptp4l0-21swapper/323:04:583
2847191600,4ptp4l0-21swapper/222:46:012
2847191600,4ptp4l0-21swapper/221:33:432
2847191600,4ptp4l0-21swapper/000:30:300
2847191600,3ptp4l1317-21lldpd21:01:230
2847191600,3ptp4l1293-21snmpd19:55:013
2847191600,3ptp4l0-21swapper/219:25:202
2847191600,3ptp4l0-21swapper/200:00:542
2847191600,3ptp4l0-21swapper/022:25:410
2847191600,3ptp4l0-21swapper/019:51:290
2847191600,2ptp4l0-21swapper/323:05:053
2847191600,2ptp4l0-21swapper/220:21:482
2847191600,18ptp4l1317-21lldpd19:06:182
2074399608,6cyclictest26407-21turbostat22:50:003
2847191590,7ptp4l121rcu_preempt23:50:050
2847191590,4ptp4l1293-21snmpd19:17:511
2847191590,4ptp4l0-21swapper/319:34:593
2847191590,4ptp4l0-21swapper/222:13:272
2847191590,4ptp4l0-21swapper/123:26:381
2847191590,3ptp4l1293-21snmpd22:15:381
2847191590,3ptp4l0-21swapper/300:08:593
2847191590,13ptp4l9-21ksoftirqd/021:15:490
2847191580,4ptp4l1317-21lldpd00:07:380
2847191580,4ptp4l0-21swapper/223:05:272
2847191580,4ptp4l0-21swapper/220:05:002
2847191580,4ptp4l0-21swapper/200:25:092
2847191580,4ptp4l0-21swapper/123:02:371
2847191580,4ptp4l0-21swapper/019:30:020
2847191580,3ptp4l0-21swapper/323:42:503
2847191580,3ptp4l0-21swapper/220:33:172
2847191580,3ptp4l0-21swapper/123:07:171
2847191580,2ptp4l1293-21snmpd22:22:531
2847191580,2ptp4l0-21swapper/121:29:481
2847191580,23ptp4l41-21ksoftirqd/323:15:583
2074399588,6cyclictest1317-21lldpd21:10:303
2847191570,5ptp4l13993-21apt20:05:150
2847191570,4ptp4l1317-21lldpd19:48:002
2847191570,4ptp4l0-21swapper/223:36:262
2847191570,4ptp4l0-21swapper/221:54:182
2847191570,4ptp4l0-21swapper/221:18:362
2847191570,4ptp4l0-21swapper/200:08:582
2847191570,4ptp4l0-21swapper/022:49:440
2847191570,4ptp4l0-21swapper/021:11:530
2847191570,3ptp4l0-21swapper/319:10:213
2847191570,3ptp4l0-21swapper/100:23:321
2847191570,3ptp4l0-21swapper/020:53:130
2074399571,15cyclictest1293-21snmpd19:15:173
2847191560,4ptp4l0-21swapper/222:42:162
2847191560,4ptp4l0-21swapper/222:42:162
2847191560,4ptp4l0-21swapper/221:45:042
2847191560,4ptp4l0-21swapper/122:07:251
2847191560,4ptp4l0-21swapper/120:24:451
2847191560,3ptp4l1293-21snmpd21:28:052
2847191560,3ptp4l0-21swapper/221:10:542
2847191560,3ptp4l0-21swapper/219:38:272
2847191560,3ptp4l0-21swapper/219:38:272
2847191560,3ptp4l0-21swapper/100:19:541
2847191560,3ptp4l0-21swapper/020:38:320
2847191560,2ptp4l1317-21lldpd19:50:092
2847191560,14ptp4l0-21swapper/020:45:350
2074399567,6cyclictest10673-21unixbench_singl00:30:313
2074399561,13cyclictest1293-21snmpd21:20:263
2847191550,4ptp4l0-21swapper/219:55:262
2847191550,4ptp4l0-21swapper/023:08:130
2847191550,3ptp4l33-21ksoftirqd/219:10:182
2847191550,22ptp4l41-21ksoftirqd/323:21:153
2074399558,7cyclictest0-21swapper/319:25:153
2074399558,43cyclictest1293-21snmpd21:45:203
20743995510,12cyclictest0-21swapper/300:20:123
2074399550,9cyclictest1130-21ntp_states19:35:283
2074399550,9cyclictest1130-21ntp_states19:35:283
2847191540,7ptp4l0-21swapper/119:44:081
2847191540,4ptp4l0-21swapper/321:55:573
2847191540,3ptp4l0-21swapper/122:55:121
2074399543,17cyclictest27948-21/usr/sbin/munin20:35:253
2074399541,12cyclictest27251-21grep20:30:293
2074399541,11cyclictest12956-21unixbench_multi00:35:303
2074399540,11cyclictest16275-21sed20:10:013
2847191530,5ptp4l0-21swapper/119:14:091
2847191530,4ptp4l2074099cyclictest23:55:581
2847191530,4ptp4l0-21swapper/222:07:362
2847191530,4ptp4l0-21swapper/120:51:151
2847191530,3ptp4l1293-21snmpd22:54:161
2074399539,6cyclictest0-21swapper/320:15:153
2074399537,7cyclictest5238-21cat22:04:593
2074399537,6cyclictest32349-21df_abs00:10:193
2074399532,11cyclictest15220-21hddtemp_smartct22:25:203
2847191520,4ptp4l0-21swapper/121:39:181
2847191520,3ptp4l1317-21lldpd19:59:201
2847191520,3ptp4l0-21swapper/120:00:561
2847191520,10ptp4l0-21swapper/019:21:240
2074399526,16cyclictest31199-21awk21:50:183
2074399525,6cyclictest24324-21seq23:53:283
2074399521,16cyclictest1317-21lldpd00:15:193
2074399520,11cyclictest1293-21snmpd00:25:173
2847191510,6ptp4l0-21swapper/021:52:300
2847191510,4ptp4l0-21swapper/100:30:591
2847191510,3ptp4l0-21swapper/200:15:352
2847191510,3ptp4l0-21swapper/119:07:261
2847191510,2ptp4l207-21systemd-journal20:55:041
2847191510,2ptp4l1317-21lldpd20:34:161
2074399517,14cyclictest207-21systemd-journal21:31:423
20743995143,6cyclictest0-21swapper/320:21:553
2074399513,45cyclictest1317-21lldpd22:51:503
2074399511,16cyclictest2847191ptp4l21:26:473
2074399511,11cyclictest8734-21latency22:10:203
2074399511,11cyclictest25990-21sendmail_mailqu23:55:263
2847191500,4ptp4l0-21swapper/119:20:311
2847191500,3ptp4l0-21swapper/121:46:031
2847191500,3ptp4l0-21swapper/119:50:321
2847191500,3ptp4l0-21swapper/020:33:060
2847191500,3ptp4l0-21swapper/019:27:080
2847191500,2ptp4l0-21swapper/020:11:200
2847191500,16ptp4l9-21ksoftirqd/000:27:380
2847191500,15ptp4l1317-21lldpd22:12:300
2847191500,12ptp4l181-21jbd2/mmcblk1p1-21:06:172
2847191500,12ptp4l181-21jbd2/mmcblk1p1-21:06:172
2847191500,12ptp4l0-21swapper/020:29:170
2074399507,6cyclictest0-21swapper/322:20:143
2074399506,11cyclictest0-21swapper/321:41:293
2074399505,10cyclictest1293-21snmpd19:40:343
20743995043,5cyclictest0-21swapper/320:04:413
20743995043,5cyclictest0-21swapper/319:53:493
2074399503,9cyclictest207-21systemd-journal20:42:453
2074399501,11cyclictest25531-21egrep19:20:163
2074399500,15cyclictest1317-21lldpd21:15:263
2074399500,11cyclictest2847191ptp4l21:39:163
2847191490,6ptp4l25-21ksoftirqd/120:42:331
2847191490,4ptp4l2074099cyclictest21:16:571
2847191490,3ptp4l0-21swapper/219:32:502
2847191490,3ptp4l0-21swapper/120:05:431
2847191490,14ptp4l1317-21lldpd19:48:491
2847191490,11ptp4l0-21swapper/122:37:271
2847191490,11ptp4l0-21swapper/122:37:261
2074399498,6cyclictest0-21swapper/320:45:133
2074399497,7cyclictest0-21swapper/323:30:253
2074399497,7cyclictest0-21swapper/323:25:243
2074399495,12cyclictest0-21swapper/322:36:333
2074399495,12cyclictest0-21swapper/322:36:333
2074399493,15cyclictest1293-21snmpd20:29:383
2074399493,12cyclictest0-21swapper/323:39:103
2074399491,9cyclictest4873-21/usr/sbin/munin20:55:183
2847191480,4ptp4l0-21swapper/220:46:082
2847191480,4ptp4l0-21swapper/122:25:031
2847191480,3ptp4l28761-21memory19:25:241
2847191480,13ptp4l0-21swapper/121:14:561
2847191480,12ptp4l0-21swapper/023:44:430
2847191480,10ptp4l0-21swapper/121:59:551
2074399487,7cyclictest0-21swapper/320:50:163
2074399487,6cyclictest0-21swapper/322:40:273
2074399487,6cyclictest0-21swapper/322:40:273
2074399485,7cyclictest392-21rs:main3
20743994842,4cyclictest0-21swapper/319:48:263
2074399483,43cyclictest0-21swapper/322:16:303
2074399481,11cyclictest16882-21iostat20:10:203
2847191470,9ptp4l0-21swapper/123:23:531
2847191470,7ptp4l0-21swapper/220:17:122
2847191470,3ptp4l241ktimersoftd/122:11:081
2847191470,3ptp4l0-21swapper/200:33:542
2847191470,12ptp4l0-21swapper/119:32:101
2847191470,12ptp4l0-21swapper/023:18:410
2847191470,10ptp4l0-21swapper/223:21:412
2074399472,15cyclictest0-21swapper/322:59:113
2847191460,4ptp4l0-21swapper/100:00:481
2847191460,3ptp4l121rcu_preempt20:27:321
2847191460,2ptp4l0-21swapper/121:05:291
2847191460,2ptp4l0-21swapper/121:05:291
2847191460,11ptp4l0-21swapper/019:19:080
2074399463,12cyclictest0-21swapper/323:47:463
2847191450,8ptp4l392-21rs:main0
2847191450,4ptp4l0-21swapper/223:46:272
2847191450,4ptp4l0-21swapper/221:56:562
2847191450,4ptp4l0-21swapper/200:35:442
2847191450,4ptp4l0-21swapper/121:30:481
2847191450,3ptp4l9-21ksoftirqd/019:08:200
2847191450,3ptp4l1317-21lldpd21:28:150
2847191450,12ptp4l207-21systemd-journal23:34:231
2847191450,11ptp4l1317-21lldpd20:00:470
2847191450,10ptp4l0-21swapper/220:09:332
2847191450,10ptp4l0-21swapper/022:57:140
2074099453,40cyclictest1317-21lldpd00:25:401
2847191440,8ptp4l1293-21snmpd23:41:132
2847191440,7ptp4l0-21swapper/100:13:001
2847191440,4ptp4l0-21swapper/221:03:092
2847191440,4ptp4l0-21swapper/122:45:231
2847191440,10ptp4l0-21swapper/122:34:531
2847191430,6ptp4l2074099cyclictest20:47:131
2847191430,5ptp4l0-21swapper/122:40:511
2847191430,5ptp4l0-21swapper/122:40:501
2847191430,5ptp4l0-21swapper/122:00:111
2847191430,4ptp4l14181-21ntp_states23:30:240
2847191430,4ptp4l0-21swapper/223:26:542
2847191430,4ptp4l0-21swapper/220:14:182
2847191430,4ptp4l0-21swapper/119:39:561
2847191430,4ptp4l0-21swapper/119:39:561
2847191430,2ptp4l31283-21apt-get23:00:110
2847191430,2ptp4l0-21swapper/121:00:201
2847191420,5ptp4l207-21systemd-journal22:17:160
2847191420,5ptp4l0-21swapper/021:21:400
2847191420,5ptp4l0-21swapper/000:17:010
2847191420,4ptp4l4887-21apt-get20:55:120
2847191420,4ptp4l390-21in:imuxsock20:45:002
2847191420,4ptp4l32427-21apt-get19:35:170
2847191420,4ptp4l32427-21apt-get19:35:170
2847191420,4ptp4l0-21swapper/123:16:111
2847191420,4ptp4l0-21swapper/121:51:061
2847191420,4ptp4l0-21swapper/120:11:131
2847191420,4ptp4l0-21swapper/023:55:570
2847191420,4ptp4l0-21swapper/022:40:030
2847191420,4ptp4l0-21swapper/022:40:030
2847191420,4ptp4l0-21swapper/021:49:480
2847191420,4ptp4l0-21swapper/000:20:030
2847191420,3ptp4l1317-21lldpd20:43:170
20739994227,4cyclictest9-21ksoftirqd/021:35:130
2847191410,7ptp4l1317-21lldpd19:41:402
2847191410,5ptp4l27683-21head21:40:310
2847191410,5ptp4l0-21swapper/319:06:213
2847191410,5ptp4l0-21swapper/123:50:241
2847191410,5ptp4l0-21swapper/023:20:350
2847191410,5ptp4l0-21swapper/019:47:240
2847191410,4ptp4l10968-21df_abs23:25:150
2847191410,4ptp4l0-21swapper/223:55:282
2847191410,4ptp4l0-21swapper/219:24:102
2847191410,4ptp4l0-21swapper/023:10:120
2847191410,4ptp4l0-21swapper/020:22:050
2847191410,4ptp4l0-21swapper/000:10:460
2847191410,3ptp4l2583-21apt-get20:50:162
2847191410,3ptp4l0-21swapper/120:39:101
2847191400,5ptp4l0-21swapper/021:05:040
2847191400,5ptp4l0-21swapper/021:05:030
2847191400,4ptp4l22493-21sort23:50:172
2847191400,4ptp4l0-21swapper/121:42:561
2847191400,4ptp4l0-21swapper/019:40:190
2847191390,3ptp4l0-21swapper/020:16:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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