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2026-04-03 - 22:15
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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 Fri Apr 03, 2026 12:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74421970,6sleep1705-21execl07:06:491
86021900,5sleep0838-21execl07:07:450
79721750,3sleep3391rcuc/307:07:113
84521740,5sleep2836-21execl07:07:352
1563821730,6sleep1141199cyclictest09:10:211
1597821670,6sleep0141099cyclictest07:28:100
841521460,4sleep341-21ksoftirqd/307:27:563
1560621240,3sleep00-21swapper/009:10:200
35132760,4sleep23482-21sh07:27:052
119972650,4sleep312003-21spawn07:20:473
198162640,6sleep119814-21sort07:29:471
134491640,3ptp4l1301-21snmpd10:58:043
134491610,3ptp4l0-21swapper/008:25:000
134491600,5ptp4l0-21swapper/109:40:161
134491590,3ptp4l841-21/usr/sbin/munin09:50:310
134491590,3ptp4l0-21swapper/208:55:172
134491580,21ptp4l5291-21users12:15:272
83722570,3sleep18390-21spawn07:20:371
299462570,6sleep2141299cyclictest07:24:242
134491570,4ptp4l24036-21apt-get10:40:121
134491550,3ptp4l3888-21tail08:45:222
134491550,3ptp4l3687-21fstime07:14:551
134491550,3ptp4l0-21swapper/112:10:161
134491550,19ptp4l1317-21runrttasks12:23:000
141099547,4cyclictest9-21ksoftirqd/007:23:550
134491540,4ptp4l31034-21cpuspeed_turbos10:55:131
134491540,4ptp4l0-21swapper/309:55:013
134491540,4ptp4l0-21swapper/210:08:092
134491540,4ptp4l0-21swapper/007:54:580
134491540,3ptp4l0-21swapper/211:07:092
134491540,2ptp4l0-21swapper/008:25:360
134491530,3ptp4l0-21swapper/108:00:231
134491520,4ptp4l0-21swapper/208:23:312
134491510,4ptp4l0-21swapper/208:18:122
134491510,4ptp4l0-21swapper/107:35:151
134491500,4ptp4l0-21swapper/208:11:432
134491500,4ptp4l0-21swapper/111:13:111
134491500,3ptp4l0-21swapper/308:30:183
134491490,4ptp4l0-21swapper/111:28:501
134491490,4ptp4l0-21swapper/012:25:420
134491490,4ptp4l0-21swapper/011:15:460
134491490,3ptp4l0-21swapper/208:34:072
109552490,3sleep310951-21find07:50:233
134491480,4ptp4l0-21swapper/209:02:412
134491480,4ptp4l0-21swapper/112:33:271
134491480,4ptp4l0-21swapper/111:44:241
134491480,4ptp4l0-21swapper/107:51:051
134491480,4ptp4l0-21swapper/008:56:210
134491470,4ptp4l16773-21taskset11:34:341
134491470,4ptp4l0-21swapper/311:54:453
134491470,4ptp4l0-21swapper/311:41:463
134491470,4ptp4l0-21swapper/210:25:002
134491470,4ptp4l0-21swapper/009:19:410
134491470,12ptp4l0-21swapper/210:55:142
1410994618,4cyclictest9-21ksoftirqd/009:40:530
1410994618,4cyclictest9-21ksoftirqd/009:05:000
134491460,9ptp4l0-21swapper/209:05:172
134491460,4ptp4l0-21swapper/109:36:381
134491460,3ptp4l0-21swapper/210:52:552
134491460,3ptp4l0-21swapper/208:36:272
134491460,3ptp4l0-21swapper/208:36:262
134491460,3ptp4l0-21swapper/108:10:001
1410994513,6cyclictest9-21ksoftirqd/010:20:000
134491450,9ptp4l0-21swapper/208:05:562
134491450,4ptp4l7439-21ls12:20:263
134491450,4ptp4l0-21swapper/008:03:080
134491450,4ptp4l0-21swapper/007:43:530
134491440,9ptp4l0-21swapper/310:45:303
134491440,9ptp4l0-21swapper/010:58:580
134491440,4ptp4l24394-21apt-get11:50:122
134491440,4ptp4l0-21swapper/308:50:093
134491440,4ptp4l0-21swapper/210:25:192
134491440,4ptp4l0-21swapper/112:05:021
134491440,4ptp4l0-21swapper/107:15:241
134491440,4ptp4l0-21swapper/011:49:370
134491440,4ptp4l0-21swapper/007:10:590
134491440,3ptp4l3465-21fstime07:13:123
134491440,3ptp4l0-21swapper/109:18:351
134491440,11ptp4l0-21swapper/010:45:270
134491440,10ptp4l0-21swapper/211:43:592
134491440,10ptp4l0-21swapper/008:31:370
1413994337,3cyclictest41-21ksoftirqd/309:40:003
1413994330,6cyclictest41-21ksoftirqd/308:25:183
141399430,3cyclictest134491ptp4l07:17:233
1410994314,7cyclictest9-21ksoftirqd/007:58:470
134491430,9ptp4l0-21swapper/210:42:112
134491430,5ptp4l10248-21iostat_ios07:50:172
134491430,5ptp4l0-21swapper/108:25:231
134491430,4ptp4l7383-21apt-get07:45:112
134491430,4ptp4l16250-21ls10:20:260
134491430,4ptp4l11976-21apt-get07:55:112
134491430,4ptp4l0-21swapper/011:37:310
134491430,4ptp4l0-21swapper/008:40:210
134491430,3ptp4l0-21swapper/112:03:461
134491430,3ptp4l0-21swapper/108:17:511
134491430,3ptp4l0-21swapper/011:56:580
1413994237,3cyclictest41-21ksoftirqd/309:30:003
1413994236,3cyclictest41-21ksoftirqd/307:30:053
134691420,11getstats0-21swapper/110:32:071
134691420,11getstats0-21swapper/110:01:541
134691420,11getstats0-21swapper/107:58:471
134691420,10getstats0-21swapper/109:33:361
134491420,8ptp4l0-21swapper/212:10:412
134491420,8ptp4l0-21swapper/211:30:522
134491420,8ptp4l0-21swapper/209:31:222
134491420,7ptp4l0-21swapper/209:19:242
134491420,5ptp4l6148-21df12:20:131
134491420,5ptp4l19729-21irqstats08:10:190
134491420,5ptp4l0-21swapper/010:00:120
134491420,4ptp4l2668-21apt-get08:45:113
134491420,4ptp4l22295-21ntp_states08:15:210
134491420,4ptp4l0-21swapper/207:14:122
134491420,4ptp4l0-21swapper/007:15:090
134491420,2ptp4l0-21swapper/311:10:153
1413994136,3cyclictest41-21ksoftirqd/312:35:003
141099419,4cyclictest9-21ksoftirqd/011:00:250
141099414,2cyclictest121rcu_preempt11:20:130
134691410,11getstats0-21swapper/110:52:571
134691410,10getstats0-21swapper/111:00:351
134691410,10getstats0-21swapper/110:47:441
134691410,10getstats0-21swapper/110:19:591
134691410,10getstats0-21swapper/109:53:141
134691410,10getstats0-21swapper/108:50:061
134691410,10getstats0-21swapper/107:47:371
134491410,9ptp4l0-21swapper/212:30:002
134491410,5ptp4l22894-21sed11:45:201
134491410,5ptp4l0-21swapper/211:22:212
134491410,5ptp4l0-21swapper/208:25:212
134491410,4ptp4l9591-21users10:05:291
134491410,4ptp4l5091-21ntp_states07:15:222
134491410,4ptp4l31232-21irqstats08:35:181
134491410,4ptp4l31232-21irqstats08:35:181
134491410,4ptp4l24820-21hddtemp_smartct11:50:151
134491410,4ptp4l20222-21meminfo09:20:191
134491410,4ptp4l12827-21apt-get12:35:112
134491410,4ptp4l1173-21irqstats07:30:170
134491410,4ptp4l0-21swapper/312:37:103
134491410,4ptp4l0-21swapper/308:40:223
134491410,4ptp4l0-21swapper/210:01:062
134491410,4ptp4l0-21swapper/112:35:171
134491410,4ptp4l0-21swapper/112:25:191
134491410,4ptp4l0-21swapper/011:44:350
134491410,4ptp4l0-21swapper/010:36:470
134491410,4ptp4l0-21swapper/010:34:320
134491410,4ptp4l0-21swapper/009:47:550
134491410,4ptp4l0-21swapper/009:06:040
134491410,4ptp4l0-21swapper/008:37:210
134491410,4ptp4l0-21swapper/008:37:210
134491410,3ptp4l6271-21strings08:50:210
134491410,3ptp4l0-21swapper/108:40:041
134491410,2ptp4l0-21swapper/011:06:500
46198400,2rtkit-daemon460-21rtkit-daemon09:57:103
1413994036,2cyclictest41-21ksoftirqd/312:10:003
1413994035,3cyclictest41-21ksoftirqd/312:00:003
141099405,2cyclictest121rcu_preempt08:05:240
141099404,4cyclictest9-21ksoftirqd/009:58:590
1410994035,3cyclictest9-21ksoftirqd/012:14:590
141099400,6cyclictest134491ptp4l10:40:230
134691400,10getstats0-21swapper/109:56:101
134491400,5ptp4l6168-21date08:50:192
134491400,5ptp4l33-21ksoftirqd/211:00:302
134491400,5ptp4l10528-21entropy10:10:170
134491400,5ptp4l0-21swapper/309:00:233
134491400,5ptp4l0-21swapper/307:58:233
134491400,5ptp4l0-21swapper/012:35:120
134491400,5ptp4l0-21swapper/012:15:170
134491400,5ptp4l0-21swapper/012:05:180
134491400,4ptp4l9042-21ntp_states10:05:250
134491400,4ptp4l8787-21/usr/sbin/munin08:55:221
134491400,4ptp4l29308-21df_inode12:00:140
134491400,4ptp4l27640-21memory11:55:191
134491400,4ptp4l22286-21iostat10:35:191
134491400,4ptp4l22139-21iostat_ios09:25:171
134491400,4ptp4l17491-21hddtemp_smartct11:35:161
134491400,4ptp4l14753-21munin-node11:30:100
134491400,4ptp4l0-21swapper/311:00:203
134491400,4ptp4l0-21swapper/309:05:153
134491400,4ptp4l0-21swapper/308:35:133
134491400,4ptp4l0-21swapper/308:35:133
134491400,4ptp4l0-21swapper/308:10:183
134491400,4ptp4l0-21swapper/212:03:412
134491400,4ptp4l0-21swapper/211:15:242
134491400,4ptp4l0-21swapper/209:26:162
134491400,4ptp4l0-21swapper/209:20:102
134491400,4ptp4l0-21swapper/208:40:172
134491400,4ptp4l0-21swapper/208:04:512
134491400,4ptp4l0-21swapper/207:32:012
134491400,4ptp4l0-21swapper/110:20:141
134491400,4ptp4l0-21swapper/012:33:040
134491400,4ptp4l0-21swapper/011:50:420
134491400,4ptp4l0-21swapper/010:51:390
134491400,4ptp4l0-21swapper/010:25:480
134491400,4ptp4l0-21swapper/009:25:200
134491400,4ptp4l0-21swapper/008:46:530
134491400,3ptp4l5766-21df11:10:140
134491400,3ptp4l514-21df07:30:121
134491400,3ptp4l19273-21apt-get09:20:113
134491400,3ptp4l0-21swapper/111:21:001
134491400,3ptp4l0-21swapper/109:01:181
134491400,3ptp4l0-21swapper/007:48:370
1413993934,3cyclictest41-21ksoftirqd/308:24:593
1413993933,4cyclictest41-21ksoftirqd/310:20:193
134491390,5ptp4l23006-21systemctl10:35:252
134491390,5ptp4l0-21swapper/312:12:363
134491390,4ptp4l30503-21ls12:00:263
134491390,4ptp4l12681-21df11:25:143
134491390,4ptp4l10217-21apt-get10:10:131
134491390,4ptp4l0-21swapper/312:15:063
134491390,4ptp4l0-21swapper/311:45:223
134491390,4ptp4l0-21swapper/311:30:243
134491390,4ptp4l0-21swapper/311:09:333
134491390,4ptp4l0-21swapper/310:38:423
134491390,4ptp4l0-21swapper/310:30:243
134491390,4ptp4l0-21swapper/310:15:143
134491390,4ptp4l0-21swapper/309:45:273
134491390,4ptp4l0-21swapper/308:19:043
134491390,4ptp4l0-21swapper/307:40:093
134491390,4ptp4l0-21swapper/212:20:242
134491390,4ptp4l0-21swapper/212:05:162
134491390,4ptp4l0-21swapper/211:55:542
134491390,4ptp4l0-21swapper/211:13:262
134491390,4ptp4l0-21swapper/210:45:122
134491390,4ptp4l0-21swapper/209:55:122
134491390,4ptp4l0-21swapper/209:41:122
134491390,4ptp4l0-21swapper/209:36:212
134491390,4ptp4l0-21swapper/110:28:241
134491390,4ptp4l0-21swapper/108:05:141
134491390,4ptp4l0-21swapper/107:45:011
134491390,4ptp4l0-21swapper/011:25:520
134491390,4ptp4l0-21swapper/009:21:400
134491390,4ptp4l0-21swapper/007:37:330
134491390,3ptp4l4569-21meminfo12:15:201
134491390,3ptp4l24448-21meminfo08:20:191
134491390,3ptp4l19419-21apt-get10:30:112
134491390,3ptp4l13037-21iostat11:25:172
134491390,3ptp4l0-21swapper/310:50:133
134491390,3ptp4l0-21swapper/309:15:193
134491390,3ptp4l0-21swapper/209:47:092
134491390,3ptp4l0-21swapper/209:10:252
134491390,2ptp4l3706-21ls07:35:192
134491380,5ptp4l0-21swapper/307:45:113
134491380,4ptp4l11331-21ntp_states10:10:242
134491380,4ptp4l0-21swapper/311:37:503
134491380,4ptp4l0-21swapper/311:20:023
134491380,4ptp4l0-21swapper/310:40:153
134491380,4ptp4l0-21swapper/308:02:013
134491380,4ptp4l0-21swapper/307:35:033
134491380,4ptp4l0-21swapper/212:32:462
134491380,4ptp4l0-21swapper/211:47:522
134491380,4ptp4l0-21swapper/211:35:302
134491380,4ptp4l0-21swapper/210:16:142
134491380,4ptp4l0-21swapper/209:50:212
134491380,4ptp4l0-21swapper/207:42:272
134491380,4ptp4l0-21swapper/111:15:241
134491380,4ptp4l0-21swapper/111:09:581
134491380,4ptp4l0-21swapper/109:08:201
134491380,3ptp4l0-21swapper/308:56:503
1413993731,3cyclictest41-21ksoftirqd/312:25:183
134491370,4ptp4l0-21swapper/311:15:343
134491370,4ptp4l0-21swapper/310:25:023
134491370,4ptp4l0-21swapper/310:04:373
134491370,4ptp4l0-21swapper/309:43:483
134491370,4ptp4l0-21swapper/308:07:303
134491370,4ptp4l0-21swapper/109:45:181
134491370,3ptp4l23945-21cpuspeed09:30:120
134491370,3ptp4l0-21swapper/309:10:193
134491370,3ptp4l0-21swapper/108:46:571
134491370,3ptp4l0-21swapper/108:32:201
134491370,3ptp4l0-21swapper/009:35:200
141399361,2cyclictest121rcu_preempt09:32:203
134491360,3ptp4l0-21swapper/310:10:263
1413993328,3cyclictest41-21ksoftirqd/310:09:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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