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2026-05-16 - 20:34
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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 rackdslot4.osadl.org (updated Sat May 16, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591204171,22phc2sys0-21swapper/307:05:413
323862202168,22sleep00-21swapper/007:06:370
325382201168,22sleep10-21swapper/107:08:351
323882200167,22sleep20-21swapper/207:06:392
138491660,1ptp4l401ktimersoftd/309:54:423
49699630,26cyclictest29882-21dpkg11:23:481
49599636,18cyclictest7925-21sshd11:44:530
49599616,18cyclictest3409-21df_abs08:20:130
49699600,23cyclictest31321-21sh12:30:191
49699600,23cyclictest31321-21sh12:30:181
13422600,6sleep049599cyclictest07:10:180
13422600,6sleep049599cyclictest07:10:180
49699590,27cyclictest11797-21proc_pri07:30:241
49699586,27cyclictest27743-21cat09:09:591
49699580,26cyclictest31778-21/usr/sbin/munin09:15:241
49599586,12cyclictest15401-21wc12:00:000
49599586,10cyclictest17955-21latency_hist08:50:000
138491580,1ptp4l401ktimersoftd/309:40:233
49599576,17cyclictest10645-21apt-get11:50:110
282362570,3sleep149699cyclictest08:05:151
49699560,24cyclictest2017-21awk11:30:221
138491560,1ptp4l401ktimersoftd/311:26:193
49599555,16cyclictest8282-21df_abs09:35:160
49599535,11cyclictest8859-21cat11:45:160
28692530,5sleep22872-21latency_hist08:20:002
1385915336,9phc2sys0-21swapper/307:10:013
1385915336,9phc2sys0-21swapper/307:10:003
49599526,12cyclictest20983-21fschecks_time10:00:160
316172520,2sleep10-21swapper/111:25:211
49599496,17cyclictest2005-21python08:15:260
49599486,11cyclictest24374-21ps07:55:240
49599486,10cyclictest26832-21tr10:10:240
49599485,7cyclictest15774-21df07:40:130
496994727,17cyclictest25-21ksoftirqd/107:55:121
49599476,16cyclictest2244-21sensors_temp11:30:240
49599476,12cyclictest25629-21latency_hist12:20:010
49599475,7cyclictest28605-21iostat09:10:180
49599474,8cyclictest15824-21hddtemp_smartct09:50:160
138491470,0ptp4l401ktimersoftd/309:10:243
49599466,11cyclictest26130-21sed12:20:160
49599454,7cyclictest18567-21hddtemp_smartct08:50:160
49699440,27cyclictest5399-21apt09:30:111
49599445,11cyclictest17743-21latency_hist11:00:010
49599444,8cyclictest13590-21iostat_ios08:40:170
49599444,7cyclictest20837-21diskstats07:50:150
49699430,23cyclictest5537-21grep10:35:141
49599436,10cyclictest2376-21date12:35:250
138491430,0ptp4l401ktimersoftd/308:25:003
497994236,3cyclictest33-21ksoftirqd/209:55:002
49599425,11cyclictest31834-21grep09:15:240
497994135,4cyclictest33-21ksoftirqd/211:40:002
497994135,3cyclictest33-21ksoftirqd/208:55:012
49699410,25cyclictest10643-21apt11:50:111
49599415,10cyclictest26559-21latency08:00:200
138491410,1ptp4l401ktimersoftd/309:06:523
49599406,12cyclictest7050-21sed08:25:260
49599405,11cyclictest30368-21latency_hist12:30:000
138491400,0ptp4l401ktimersoftd/311:35:163
498993932,4cyclictest41-21ksoftirqd/312:10:583
497993928,9cyclictest33-21ksoftirqd/210:35:252
49599393,7cyclictest9130-21meminfo07:25:190
49599393,7cyclictest21492-21irqstats08:55:200
134991390,3getstats41-21ksoftirqd/310:19:523
50798380,3rtkit-daemon31453-21ls10:20:212
497993834,3cyclictest33-21ksoftirqd/207:20:002
497993833,3cyclictest33-21ksoftirqd/210:00:002
497993833,3cyclictest33-21ksoftirqd/209:50:012
497993833,3cyclictest33-21ksoftirqd/207:40:172
497993828,9cyclictest33-21ksoftirqd/210:00:252
49699380,24cyclictest7859-21apt-get09:35:121
49599386,10cyclictest23710-21cut10:05:200
498993732,3cyclictest6811-21phc2sys10:35:233
498993731,4cyclictest41-21ksoftirqd/310:23:533
498993731,4cyclictest41-21ksoftirqd/308:45:533
498993731,4cyclictest41-21ksoftirqd/308:32:453
498993731,4cyclictest41-21ksoftirqd/307:27:263
498993731,4cyclictest41-21ksoftirqd/307:16:233
498993730,4cyclictest41-21ksoftirqd/312:03:553
498993730,4cyclictest41-21ksoftirqd/310:32:123
498993730,4cyclictest41-21ksoftirqd/308:54:153
497993733,3cyclictest33-21ksoftirqd/212:25:192
497993732,3cyclictest33-21ksoftirqd/209:00:202
497993732,2cyclictest33-21ksoftirqd/207:25:002
497993731,4cyclictest33-21ksoftirqd/210:41:262
497993731,4cyclictest33-21ksoftirqd/207:25:282
49699370,22cyclictest0-21swapper/110:30:141
49599375,11cyclictest9524-21ssh08:30:260
138491370,0ptp4l401ktimersoftd/310:05:173
498993630,4cyclictest41-21ksoftirqd/312:29:133
498993630,4cyclictest41-21ksoftirqd/307:42:583
497993631,3cyclictest33-21ksoftirqd/209:00:002
497993631,3cyclictest33-21ksoftirqd/207:55:122
497993630,4cyclictest33-21ksoftirqd/212:17:382
497993630,4cyclictest33-21ksoftirqd/211:10:332
497993630,4cyclictest33-21ksoftirqd/209:36:192
497993630,4cyclictest33-21ksoftirqd/208:33:522
497993629,4cyclictest33-21ksoftirqd/209:24:222
497993624,9cyclictest33-21ksoftirqd/208:20:182
496993630,4cyclictest25-21ksoftirqd/112:19:201
496993630,4cyclictest25-21ksoftirqd/111:45:581
496993630,3cyclictest25-21ksoftirqd/109:56:351
496993629,4cyclictest25-21ksoftirqd/108:45:511
495993630,4cyclictest9-21ksoftirqd/012:11:130
50798350,6rtkit-daemon14132-21needreboot07:35:232
498993529,4cyclictest41-21ksoftirqd/311:43:413
498993529,4cyclictest41-21ksoftirqd/311:07:263
498993529,4cyclictest41-21ksoftirqd/309:27:053
498993529,4cyclictest41-21ksoftirqd/308:43:523
497993530,3cyclictest33-21ksoftirqd/210:08:242
497993530,3cyclictest33-21ksoftirqd/208:40:002
497993530,3cyclictest33-21ksoftirqd/207:30:122
497993529,4cyclictest33-21ksoftirqd/211:24:052
497993529,4cyclictest33-21ksoftirqd/209:15:032
497993529,4cyclictest33-21ksoftirqd/207:54:452
497993529,4cyclictest33-21ksoftirqd/207:12:252
497993529,4cyclictest33-21ksoftirqd/207:12:252
497993529,3cyclictest33-21ksoftirqd/209:05:292
497993528,4cyclictest33-21ksoftirqd/209:43:092
49699356,27cyclictest0-21swapper/112:38:441
496993530,3cyclictest25-21ksoftirqd/108:20:091
496993528,5cyclictest25-21ksoftirqd/108:15:421
496993528,4cyclictest25-21ksoftirqd/108:38:491
496993512,20cyclictest27363-21seq11:18:341
49599354,11cyclictest14574-21timerandwakeup10:50:270
495993530,3cyclictest9-21ksoftirqd/011:20:000
495993529,4cyclictest9-21ksoftirqd/009:46:480
495993529,4cyclictest9-21ksoftirqd/008:35:340
495993529,4cyclictest9-21ksoftirqd/007:23:420
495993528,4cyclictest9-21ksoftirqd/009:32:310
498993428,4cyclictest41-21ksoftirqd/311:53:103
498993428,4cyclictest41-21ksoftirqd/310:48:243
498993428,4cyclictest41-21ksoftirqd/308:09:223
498993428,4cyclictest41-21ksoftirqd/307:54:103
498993428,4cyclictest41-21ksoftirqd/307:24:573
498993427,4cyclictest41-21ksoftirqd/308:15:473
497993430,3cyclictest33-21ksoftirqd/208:40:122
497993430,2cyclictest33-21ksoftirqd/212:40:002
497993429,3cyclictest33-21ksoftirqd/210:50:192
497993429,3cyclictest33-21ksoftirqd/208:12:042
497993428,4cyclictest33-21ksoftirqd/212:02:402
497993428,4cyclictest33-21ksoftirqd/211:44:552
497993428,4cyclictest33-21ksoftirqd/211:30:122
497993428,4cyclictest33-21ksoftirqd/211:17:552
496993429,3cyclictest25-21ksoftirqd/110:18:201
496993429,3cyclictest25-21ksoftirqd/107:48:291
496993428,4cyclictest25-21ksoftirqd/112:10:101
496993428,4cyclictest25-21ksoftirqd/111:00:341
496993428,4cyclictest25-21ksoftirqd/111:00:341
496993428,4cyclictest25-21ksoftirqd/110:00:331
496993428,4cyclictest25-21ksoftirqd/109:46:031
496993428,4cyclictest25-21ksoftirqd/108:31:151
496993427,5cyclictest25-21ksoftirqd/110:28:001
496993427,4cyclictest25-21ksoftirqd/110:21:541
496993427,4cyclictest25-21ksoftirqd/109:26:431
49699340,1cyclictest15373-21apt-get10:55:121
138491340,0ptp4l401ktimersoftd/310:25:033
498993327,4cyclictest41-21ksoftirqd/312:24:113
498993327,4cyclictest41-21ksoftirqd/311:58:533
498993327,4cyclictest41-21ksoftirqd/309:37:473
498993327,4cyclictest41-21ksoftirqd/307:38:453
498993327,3cyclictest41-21ksoftirqd/307:49:483
497993329,3cyclictest33-21ksoftirqd/208:45:232
497993328,3cyclictest33-21ksoftirqd/212:06:582
497993328,3cyclictest33-21ksoftirqd/210:25:182
497993328,3cyclictest33-21ksoftirqd/210:10:132
497993328,3cyclictest33-21ksoftirqd/208:00:142
497993327,4cyclictest33-21ksoftirqd/212:21:192
497993327,4cyclictest33-21ksoftirqd/211:29:272
497993327,4cyclictest33-21ksoftirqd/210:33:462
497993327,4cyclictest33-21ksoftirqd/209:27:272
497993327,4cyclictest33-21ksoftirqd/208:27:552
497993327,4cyclictest33-21ksoftirqd/207:48:112
497993327,3cyclictest33-21ksoftirqd/210:20:002
496993328,3cyclictest25-21ksoftirqd/109:10:421
496993327,4cyclictest25-21ksoftirqd/111:57:231
496993327,4cyclictest25-21ksoftirqd/107:17:411
496993326,4cyclictest25-21ksoftirqd/112:07:291
49699332,25cyclictest12867-21apt-get08:40:111
49699331,29cyclictest9118-21grep10:40:201
496993311,19cyclictest31594-21cat08:10:221
496993310,20cyclictest24340-21sed11:10:231
496993310,20cyclictest20622-21expr11:05:141
49599336,12cyclictest11792-21grep09:40:240
49599335,8cyclictest1835-21phc2sys10:25:210
495993328,3cyclictest9-21ksoftirqd/010:41:560
49599332,19cyclictest0-21swapper/012:30:120
49599332,19cyclictest0-21swapper/012:30:120
498993227,3cyclictest41-21ksoftirqd/309:23:553
498993226,4cyclictest41-21ksoftirqd/311:31:493
498993226,4cyclictest41-21ksoftirqd/310:12:173
498993226,4cyclictest41-21ksoftirqd/309:17:423
497993227,3cyclictest33-21ksoftirqd/211:05:002
497993227,3cyclictest33-21ksoftirqd/211:05:002
497993226,4cyclictest33-21ksoftirqd/212:34:172
497993226,4cyclictest33-21ksoftirqd/212:34:172
497993226,4cyclictest33-21ksoftirqd/211:52:372
497993226,4cyclictest33-21ksoftirqd/211:49:002
497993226,4cyclictest33-21ksoftirqd/210:58:472
497993226,4cyclictest33-21ksoftirqd/209:33:302
49699323,24cyclictest5571-21apt-get07:20:121
496993227,3cyclictest25-21ksoftirqd/112:25:111
496993226,4cyclictest25-21ksoftirqd/109:43:111
496993226,4cyclictest25-21ksoftirqd/107:53:151
496993226,4cyclictest25-21ksoftirqd/107:25:031
496993225,4cyclictest25-21ksoftirqd/108:29:501
49699322,25cyclictest15241-21apt-get09:50:131
49699321,28cyclictest6454-21iostat_ios11:40:191
49699320,1cyclictest0-21swapper/110:50:151
49599326,8cyclictest30051-21apt-config11:23:480
49599326,12cyclictest20246-21sed11:05:000
49599326,12cyclictest20246-21sed11:05:000
495993227,3cyclictest9-21ksoftirqd/009:57:420
495993226,4cyclictest9-21ksoftirqd/011:12:120
495993226,4cyclictest9-21ksoftirqd/011:08:340
495993226,4cyclictest9-21ksoftirqd/010:46:010
495993226,4cyclictest9-21ksoftirqd/010:18:370
495993226,4cyclictest9-21ksoftirqd/008:14:160
495993225,4cyclictest9-21ksoftirqd/011:36:350
495993225,4cyclictest9-21ksoftirqd/011:29:250
138491320,0ptp4l401ktimersoftd/310:43:473
498993125,4cyclictest41-21ksoftirqd/310:54:333
498993125,4cyclictest41-21ksoftirqd/308:55:073
498993125,3cyclictest41-21ksoftirqd/307:32:373
497993125,4cyclictest33-21ksoftirqd/211:10:002
497993114,15cyclictest33-21ksoftirqd/211:55:252
49699318,20cyclictest223-21systemd-journal11:35:581
49699317,21cyclictest2503-21kworker/u8:010:10:121
496993126,3cyclictest25-21ksoftirqd/110:46:361
496993125,4cyclictest25-21ksoftirqd/109:23:301
496993125,4cyclictest25-21ksoftirqd/107:44:571
49699311,25cyclictest19134-21missed_timers08:50:211
49699311,24cyclictest25789-21cpuspeed_turbos12:20:131
49699310,26cyclictest23146-21cpuspeed_turbos09:00:131
49599315,11cyclictest30298-21cat08:09:590
49599313,19cyclictest0-21swapper/007:15:130
495993126,3cyclictest9-21ksoftirqd/010:30:110
495993125,4cyclictest9-21ksoftirqd/010:21:540
495993125,4cyclictest9-21ksoftirqd/009:27:010
495993124,5cyclictest9-21ksoftirqd/012:01:180
49599312,18cyclictest0-21swapper/007:35:140
138491310,0ptp4l401ktimersoftd/311:04:333
138491310,0ptp4l401ktimersoftd/311:04:333
138491310,0ptp4l401ktimersoftd/310:59:243
498993025,3cyclictest41-21ksoftirqd/312:30:553
498993025,3cyclictest41-21ksoftirqd/312:30:553
498993025,3cyclictest41-21ksoftirqd/311:45:103
498993024,4cyclictest41-21ksoftirqd/309:34:183
498993024,4cyclictest41-21ksoftirqd/308:11:473
497993026,3cyclictest33-21ksoftirqd/208:05:192
497993026,2cyclictest33-21ksoftirqd/209:10:252
49699308,19cyclictest15994-21df_abs12:00:131
49699306,20cyclictest20968-21forks08:55:151
49699303,21cyclictest22896-21apt-get10:05:141
496993024,4cyclictest25-21ksoftirqd/107:13:081
496993024,4cyclictest25-21ksoftirqd/107:13:071
49599304,16cyclictest0-21swapper/007:30:130
495993025,3cyclictest9-21ksoftirqd/009:00:120
49599301,17cyclictest0-21swapper/012:05:120
138491300,8ptp4l401ktimersoftd/308:26:183
498992924,3cyclictest41-21ksoftirqd/309:02:113
498992923,4cyclictest41-21ksoftirqd/311:24:193
498992923,4cyclictest41-21ksoftirqd/309:55:543
498992922,4cyclictest41-21ksoftirqd/308:04:373
496992924,3cyclictest25-21ksoftirqd/108:00:111
49699290,1cyclictest0-21swapper/107:35:131
495992923,4cyclictest9-21ksoftirqd/009:21:350
49599291,18cyclictest0-21swapper/010:35:120
138491290,0ptp4l401ktimersoftd/310:04:383
138491290,0ptp4l401ktimersoftd/308:35:253
498992824,3cyclictest41-21ksoftirqd/312:05:133
498992822,4cyclictest41-21ksoftirqd/311:16:053
498992822,4cyclictest41-21ksoftirqd/311:12:283
498992822,4cyclictest13143-21expr09:45:153
497992823,3cyclictest33-21ksoftirqd/212:13:312
49599282,16cyclictest0-21swapper/007:45:260
138491280,0ptp4l401ktimersoftd/312:38:413
497992722,3cyclictest33-21ksoftirqd/210:46:192
49599274,7cyclictest27285-21sshd09:05:350
498992621,3cyclictest41-21ksoftirqd/312:16:023
138491260,0ptp4l401ktimersoftd/307:55:303
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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