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2026-07-20 - 00:19
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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 Jul 19, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2999621430,7sleep31542999cyclictest08:50:133
3263121420,4sleep31542999cyclictest10:05:113
315412640,4sleep00-21swapper/010:00:270
134491620,28ptp4l9-21ksoftirqd/009:45:270
134491590,4ptp4l1087-21meminfo11:15:200
134491590,4ptp4l0-21swapper/209:47:442
134491590,3ptp4l3004-21ls07:50:273
134491590,3ptp4l10385-21users08:05:300
134491580,3ptp4l0-21swapper/008:00:250
134491570,3ptp4l0-21swapper/012:20:270
134491560,9ptp4l0-21swapper/207:51:502
134491560,17ptp4l0-21swapper/111:07:071
19232550,4sleep00-21swapper/009:00:130
134491550,4ptp4l0-21swapper/111:53:211
134491550,3ptp4l0-21swapper/107:30:241
134491550,3ptp4l0-21swapper/007:53:270
134491540,6ptp4l0-21swapper/307:05:113
134491540,4ptp4l0-21swapper/010:25:210
134491540,3ptp4l0-21swapper/111:00:161
134491530,4ptp4l0-21swapper/212:21:312
134491530,4ptp4l0-21swapper/107:19:081
134491530,3ptp4l0-21swapper/209:35:382
134491530,3ptp4l0-21swapper/010:46:090
134491530,3ptp4l0-21swapper/008:45:290
134491530,21ptp4l0-21swapper/109:47:411
134491520,4ptp4l0-21swapper/211:26:192
134491520,4ptp4l0-21swapper/111:12:421
134491520,3ptp4l0-21swapper/112:24:241
134491510,8ptp4l13092-21apt-get07:05:112
134491510,4ptp4l0-21swapper/209:22:072
134491510,4ptp4l0-21swapper/208:50:592
134491510,4ptp4l0-21swapper/208:45:052
134491510,4ptp4l0-21swapper/208:23:312
134491510,4ptp4l0-21swapper/111:23:341
134491510,4ptp4l0-21swapper/009:14:300
134491510,18ptp4l25-21ksoftirqd/109:50:331
134491500,4ptp4l0-21swapper/212:07:042
134491500,4ptp4l0-21swapper/211:35:472
134491500,4ptp4l0-21swapper/210:58:532
134491500,4ptp4l0-21swapper/209:58:092
134491500,4ptp4l0-21swapper/208:26:032
134491500,3ptp4l0-21swapper/010:59:240
134491500,12ptp4l0-21swapper/212:30:412
134491490,4ptp4l0-21swapper/210:29:532
134491490,4ptp4l0-21swapper/207:13:432
134491490,4ptp4l0-21swapper/112:08:301
134491490,4ptp4l0-21swapper/009:22:040
134491490,3ptp4l0-21swapper/110:53:361
134491490,3ptp4l0-21swapper/107:20:271
134491490,3ptp4l0-21swapper/009:50:270
134491490,3ptp4l0-21swapper/009:15:190
134491480,4ptp4l0-21swapper/212:39:252
134491480,4ptp4l0-21swapper/212:28:072
134491480,4ptp4l0-21swapper/212:19:112
134491480,4ptp4l0-21swapper/212:19:112
134491480,4ptp4l0-21swapper/210:36:522
134491480,4ptp4l0-21swapper/208:59:542
134491480,4ptp4l0-21swapper/110:43:291
134491480,4ptp4l0-21swapper/110:43:291
134491480,4ptp4l0-21swapper/011:09:580
134491480,4ptp4l0-21swapper/008:21:590
134491480,4ptp4l0-21swapper/007:30:080
134491480,3ptp4l0-21swapper/110:14:391
134491480,3ptp4l0-21swapper/108:18:251
134491480,3ptp4l0-21swapper/011:20:410
134491480,3ptp4l0-21swapper/011:13:570
15427994718,27cyclictest0-21swapper/110:25:281
1542799471,44cyclictest0-21swapper/112:39:581
134491470,4ptp4l0-21swapper/112:13:501
134491470,4ptp4l0-21swapper/108:58:541
134491470,4ptp4l0-21swapper/011:04:270
134491470,4ptp4l0-21swapper/009:42:450
134491470,4ptp4l0-21swapper/008:38:280
134491470,3ptp4l0-21swapper/012:03:320
134491470,3ptp4l0-21swapper/011:30:270
134491460,4ptp4l0-21swapper/112:00:551
134491460,4ptp4l0-21swapper/010:43:070
134491460,4ptp4l0-21swapper/010:43:070
134491460,4ptp4l0-21swapper/008:10:290
134491460,3ptp4l0-21swapper/311:16:383
134491460,3ptp4l0-21swapper/107:54:511
134491460,3ptp4l0-21swapper/107:45:521
134491460,3ptp4l0-21swapper/008:17:500
134491450,4ptp4l0-21swapper/109:00:121
134491450,4ptp4l0-21swapper/012:11:130
134491450,4ptp4l0-21swapper/011:55:010
134491450,3ptp4l0-21swapper/107:27:241
134491450,2ptp4l0-21swapper/010:05:160
134491440,5ptp4l0-21swapper/310:25:123
134491440,4ptp4l0-21swapper/207:26:182
134491430,5ptp4l0-21swapper/211:10:112
134491430,4ptp4l101ktimersoftd/008:40:190
134491430,4ptp4l0-21swapper/110:17:181
134491430,4ptp4l0-21swapper/010:54:030
134491430,3ptp4l11107-21users11:35:261
134491430,3ptp4l0-21swapper/109:37:331
134491430,2ptp4l0-21swapper/111:49:421
134491420,9ptp4l0-21swapper/208:33:072
134491420,5ptp4l0-21swapper/312:00:263
134491420,5ptp4l0-21swapper/211:00:262
134491420,5ptp4l0-21swapper/107:40:221
134491420,5ptp4l0-21swapper/107:40:221
134491420,5ptp4l0-21swapper/010:20:210
134491420,4ptp4l885-21iostat_ios12:25:190
134491420,4ptp4l6515-21users11:25:291
134491420,4ptp4l2318-21gnome-shell08:02:591
134491410,9ptp4l0-21swapper/109:12:531
134491410,5ptp4l15880-21perl07:10:160
134491410,5ptp4l10912-21latency_hist08:10:013
134491410,5ptp4l0-21swapper/311:30:213
134491410,5ptp4l0-21swapper/111:30:181
134491410,4ptp4l5683-21ls09:05:260
134491410,4ptp4l3712-21ls12:30:230
134491410,4ptp4l32181-21apt-get10:05:031
134491410,4ptp4l27801-21apt-get09:55:130
134491410,4ptp4l27015-21apt-get07:35:120
134491410,4ptp4l20917-21hddtemp_smartct08:30:171
134491410,4ptp4l0-21swapper/309:08:333
134491410,4ptp4l0-21swapper/211:06:082
134491410,4ptp4l0-21swapper/112:30:201
134491410,3ptp4l22421-21apt-get07:25:123
134491410,3ptp4l21228-21df12:00:132
134491410,3ptp4l18602-21apt-get09:35:140
134491410,3ptp4l16357-21irqstats07:10:201
134491410,3ptp4l11222-21apt-get08:10:131
134491410,3ptp4l0-21swapper/108:22:211
134491410,1ptp4l27487-21kworker/2:111:15:182
15428994034,4cyclictest33-21ksoftirqd/210:41:092
15428994034,4cyclictest33-21ksoftirqd/210:41:092
134491400,8ptp4l0-21swapper/211:45:382
134491400,6ptp4l21897-21cut10:50:173
134491400,6ptp4l19765-21phc2sys09:35:273
134491400,5ptp4l13962-21if_enp1s009:25:160
134491400,5ptp4l0-21swapper/308:15:183
134491400,5ptp4l0-21swapper/210:10:462
134491400,5ptp4l0-21swapper/108:26:301
134491400,4ptp4l8047-21irqstats10:20:181
134491400,4ptp4l4184-21df_inode07:55:161
134491400,4ptp4l31362-21users08:50:270
134491400,4ptp4l30119-21hddtemp_smartct08:50:151
134491400,4ptp4l21481-21iostat09:40:171
134491400,4ptp4l17707-21apt-get09:32:321
134491400,4ptp4l16967-21iostat11:50:180
134491400,4ptp4l14464-21meminfo08:15:192
134491400,4ptp4l1243-21users08:55:300
134491400,4ptp4l12103-21df_inode10:30:151
134491400,4ptp4l0-21swapper/309:25:153
134491400,4ptp4l0-21swapper/309:01:353
134491400,4ptp4l0-21swapper/210:30:562
134491400,4ptp4l0-21swapper/209:31:212
134491400,4ptp4l0-21swapper/207:41:082
134491400,4ptp4l0-21swapper/207:41:082
134491400,4ptp4l0-21swapper/207:18:062
134491400,4ptp4l0-21swapper/109:19:281
134491400,4ptp4l0-21swapper/108:45:011
134491400,4ptp4l0-21swapper/108:40:211
134491400,4ptp4l0-21swapper/010:35:270
134491400,4ptp4l0-21swapper/010:10:190
134491400,3ptp4l727-21hddtemp_smartct12:25:161
134491400,3ptp4l30265-21apt-get11:10:113
134491400,3ptp4l28552-21hddtemp_smartct12:15:170
134491400,3ptp4l28552-21hddtemp_smartct12:15:170
134491400,3ptp4l27968-21memory07:35:213
134491400,3ptp4l21469-21python07:20:280
134491400,3ptp4l16260-21hddtemp_smartct09:30:170
134491400,3ptp4l14087-21apt-get10:35:111
134491400,3ptp4l11012-21/usr/sbin/munin11:35:270
134491400,3ptp4l10216-21ls08:05:291
134491400,3ptp4l0-21swapper/109:26:341
134491400,2ptp4l4266-21apt-get09:05:121
15428993934,3cyclictest33-21ksoftirqd/209:10:452
134491390,5ptp4l0-21swapper/307:21:443
134491390,5ptp4l0-21swapper/209:09:482
134491390,5ptp4l0-21swapper/112:15:281
134491390,5ptp4l0-21swapper/112:15:281
134491390,5ptp4l0-21swapper/110:55:151
134491390,4ptp4l33-21ksoftirqd/210:50:142
134491390,4ptp4l33-21ksoftirqd/209:40:152
134491390,4ptp4l27319-21df_inode07:35:151
134491390,4ptp4l20187-21sshd08:29:300
134491390,4ptp4l0-21swapper/312:35:253
134491390,4ptp4l0-21swapper/312:11:593
134491390,4ptp4l0-21swapper/311:45:553
134491390,4ptp4l0-21swapper/311:05:143
134491390,4ptp4l0-21swapper/310:49:473
134491390,4ptp4l0-21swapper/310:36:563
134491390,4ptp4l0-21swapper/309:58:513
134491390,4ptp4l0-21swapper/309:16:233
134491390,4ptp4l0-21swapper/308:45:053
134491390,4ptp4l0-21swapper/307:55:193
134491390,4ptp4l0-21swapper/212:11:242
134491390,4ptp4l0-21swapper/211:55:492
134491390,4ptp4l0-21swapper/211:53:322
134491390,4ptp4l0-21swapper/211:44:232
134491390,4ptp4l0-21swapper/211:32:482
134491390,4ptp4l0-21swapper/210:20:032
134491390,4ptp4l0-21swapper/209:51:082
134491390,4ptp4l0-21swapper/209:19:112
134491390,4ptp4l0-21swapper/208:43:022
134491390,4ptp4l0-21swapper/208:35:542
134491390,4ptp4l0-21swapper/208:13:012
134491390,4ptp4l0-21swapper/208:05:152
134491390,4ptp4l0-21swapper/207:59:542
134491390,4ptp4l0-21swapper/207:45:082
134491390,4ptp4l0-21swapper/207:32:132
134491390,4ptp4l0-21swapper/207:22:142
134491390,4ptp4l0-21swapper/111:58:431
134491390,4ptp4l0-21swapper/110:45:281
134491390,4ptp4l0-21swapper/110:00:191
134491390,4ptp4l0-21swapper/012:35:190
134491390,4ptp4l0-21swapper/012:05:080
134491390,4ptp4l0-21swapper/011:45:200
134491390,4ptp4l0-21swapper/011:25:330
134491390,4ptp4l0-21swapper/010:30:300
134491390,4ptp4l0-21swapper/007:55:290
134491390,4ptp4l0-21swapper/007:45:220
134491390,4ptp4l0-21swapper/007:25:380
134491390,4ptp4l0-21swapper/007:18:480
134491390,3ptp4l29470-21users09:55:291
134491390,3ptp4l20490-21apt-get08:30:130
134491390,3ptp4l12126-21memory09:20:211
134491390,3ptp4l1158-21ls11:15:201
134491390,3ptp4l0-21swapper/010:19:590
134491390,2ptp4l30280-21meminfo07:40:200
134491390,2ptp4l30280-21meminfo07:40:200
134491380,5ptp4l0-21swapper/311:56:413
134491380,5ptp4l0-21swapper/211:20:562
134491380,4ptp4l0-21swapper/312:30:583
134491380,4ptp4l0-21swapper/312:09:123
134491380,4ptp4l0-21swapper/311:50:133
134491380,4ptp4l0-21swapper/311:23:213
134491380,4ptp4l0-21swapper/311:00:273
134491380,4ptp4l0-21swapper/310:22:083
134491380,4ptp4l0-21swapper/309:51:093
134491380,4ptp4l0-21swapper/309:47:393
134491380,4ptp4l0-21swapper/309:40:153
134491380,4ptp4l0-21swapper/308:32:513
134491380,4ptp4l0-21swapper/308:00:353
134491380,4ptp4l0-21swapper/307:15:263
134491380,4ptp4l0-21swapper/210:45:332
134491380,4ptp4l0-21swapper/210:16:512
134491380,4ptp4l0-21swapper/210:01:352
134491380,4ptp4l0-21swapper/209:03:202
134491380,4ptp4l0-21swapper/208:01:432
134491380,4ptp4l0-21swapper/207:37:122
134491380,4ptp4l0-21swapper/108:35:061
134491380,3ptp4l12310-21iostat11:40:161
134491380,3ptp4l11732-21/usr/sbin/munin11:40:150
15429993732,3cyclictest41-21ksoftirqd/311:43:363
134491370,4ptp4l0-21swapper/312:25:053
134491370,4ptp4l0-21swapper/312:16:383
134491370,4ptp4l0-21swapper/312:16:383
134491370,4ptp4l0-21swapper/310:42:203
134491370,4ptp4l0-21swapper/310:42:203
134491370,4ptp4l0-21swapper/310:02:033
134491370,4ptp4l0-21swapper/308:24:433
134491370,4ptp4l0-21swapper/308:10:563
134491370,4ptp4l0-21swapper/210:06:012
134491370,4ptp4l0-21swapper/209:26:212
134491370,3ptp4l0-21swapper/312:22:553
134491370,3ptp4l0-21swapper/307:47:143
15429993630,4cyclictest41-21ksoftirqd/310:10:213
134491360,5ptp4l0-21swapper/307:12:583
134491360,4ptp4l0-21swapper/308:28:593
134491360,4ptp4l0-21swapper/307:32:413
134491360,3ptp4l0-21swapper/311:37:583
134491360,3ptp4l0-21swapper/311:27:533
134491360,3ptp4l0-21swapper/310:59:293
134491360,3ptp4l0-21swapper/308:59:553
134491350,3ptp4l0-21swapper/309:13:033
134491340,4ptp4l0-21swapper/310:33:503
134491340,4ptp4l0-21swapper/310:18:383
15429993328,3cyclictest41-21ksoftirqd/308:40:313
15429992923,4cyclictest41-21ksoftirqd/308:36:253
134491290,4ptp4l0-21swapper/309:22:133
134491280,4ptp4l0-21swapper/307:40:443
134491280,4ptp4l0-21swapper/307:40:443
15429992418,3cyclictest41-21ksoftirqd/309:30:183
149452192,4sleep00-21swapper/007:07:410
145122161,9sleep114655-21ls07:05:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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