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2026-05-28 - 23:01
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Thu May 28, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1109221620,2sleep2315199cyclictest08:35:162
2938721550,3sleep0314999cyclictest10:25:010
315099682,37cyclictest0-21swapper/108:00:221
315099650,62cyclictest13439-21iostat07:30:171
157582650,5sleep20-21swapper/207:35:132
315099641,60cyclictest1110-21users10:30:281
326322630,5sleep132470-21irqrtprio09:20:191
315099631,24cyclictest24292-21timerandwakeup11:20:271
226552630,7sleep3315299cyclictest10:10:113
134491620,5ptp4l0-21swapper/310:00:183
104552620,4sleep20-21swapper/210:50:262
315099600,14cyclictest134491ptp4l08:40:241
134491590,16ptp4l3917-21latency_hist09:30:000
315099588,24cyclictest29445-21cat11:34:551
315099571,35cyclictest17571-21taskset12:16:001
315099571,35cyclictest17571-21taskset12:16:001
134491570,4ptp4l0-21swapper/107:05:261
134491570,4ptp4l0-21swapper/011:02:360
315099561,28cyclictest22208-21seq10:07:361
134491560,3ptp4l0-21swapper/011:15:010
315099552,31cyclictest0-21swapper/111:00:301
134491550,4ptp4l0-21swapper/310:41:133
134491550,3ptp4l0-21swapper/109:05:231
315099541,27cyclictest12285-21seq07:29:171
315099540,3cyclictest25808-21kernelversion10:15:191
134491540,4ptp4l4186-21sort08:20:170
134491540,4ptp4l4186-21sort08:20:170
134491540,4ptp4l0-21swapper/009:56:410
134491540,4ptp4l0-21swapper/007:09:220
315099530,4cyclictest29342-21expr08:05:141
315099530,29cyclictest24562-21seq09:03:051
134491530,4ptp4l0-21swapper/007:45:090
134491530,3ptp4l0-21swapper/309:20:203
134491520,4ptp4l0-21swapper/008:07:310
134491520,3ptp4l0-21swapper/308:34:403
134491510,4ptp4l0-21swapper/012:16:060
134491510,4ptp4l0-21swapper/012:16:060
134491510,4ptp4l0-21swapper/011:53:070
134491510,4ptp4l0-21swapper/010:43:450
134491510,3ptp4l0-21swapper/311:01:073
134491510,3ptp4l0-21swapper/008:15:170
134491510,11ptp4l0-21swapper/207:17:202
315099501,27cyclictest5666-21taskset08:23:041
315099501,27cyclictest5666-21taskset08:23:041
134491500,4ptp4l0-21swapper/010:30:540
134491500,4ptp4l0-21swapper/008:43:290
315099490,28cyclictest8348-21taskset09:37:501
134491490,4ptp4l0-21swapper/008:47:220
134491490,4ptp4l0-21swapper/008:35:410
134491490,3ptp4l0-21swapper/011:39:570
134491490,3ptp4l0-21swapper/007:59:180
315099481,27cyclictest3495-21taskset10:35:271
134491480,8ptp4l0-21swapper/211:19:242
134491480,4ptp4l0-21swapper/009:48:350
134491480,4ptp4l0-21swapper/007:20:160
134491480,3ptp4l0-21swapper/009:24:440
134491470,4ptp4l0-21swapper/011:57:390
134491470,4ptp4l0-21swapper/010:27:400
134491470,4ptp4l0-21swapper/007:11:340
134491470,3ptp4l0-21swapper/012:20:120
315099469,25cyclictest24602-21seq10:13:531
315099462,23cyclictest0-21swapper/108:34:281
315099460,32cyclictest28112-21/usr/sbin/munin10:20:191
315099460,32cyclictest1898-21taskset11:45:061
134491460,3ptp4l0-21swapper/008:30:260
315099458,23cyclictest3875-21seq09:29:521
315099451,28cyclictest31494-21chrt10:28:391
315099450,27cyclictest902-21seq08:12:181
315099450,27cyclictest22246-21seq12:26:481
134491450,4ptp4l20453-21apt-get12:25:133
134491450,4ptp4l0-21swapper/011:29:350
134491450,4ptp4l0-21swapper/007:54:380
315099441,29cyclictest1-21systemd10:02:051
134491440,9ptp4l0-21swapper/212:07:112
134491440,9ptp4l0-21swapper/210:13:232
134491440,9ptp4l0-21swapper/210:01:282
134491440,8ptp4l0-21swapper/112:02:591
134491440,5ptp4l0-21swapper/207:30:032
134491440,4ptp4l6479-21apt-get09:35:103
134491440,4ptp4l0-21swapper/207:55:122
134491440,3ptp4l13605-21apt-get11:00:112
134491440,3ptp4l0-21swapper/211:26:492
134491440,3ptp4l0-21swapper/209:19:012
134491440,3ptp4l0-21swapper/109:55:361
134491440,3ptp4l0-21swapper/109:51:341
134491440,3ptp4l0-21swapper/009:05:090
134491440,12ptp4l0-21swapper/212:30:202
315199430,2cyclictest137891phc2sys09:45:282
315099431,28cyclictest5882-21taskset10:41:111
315099430,3cyclictest134491ptp4l12:35:211
134491430,9ptp4l0-21swapper/211:22:432
134491430,9ptp4l0-21swapper/211:07:302
134491430,9ptp4l0-21swapper/210:06:212
134491430,9ptp4l0-21swapper/209:06:482
134491430,8ptp4l0-21swapper/212:01:342
134491430,8ptp4l0-21swapper/210:32:412
134491430,8ptp4l0-21swapper/207:40:552
134491430,6ptp4l24328-21ls11:20:280
134491430,5ptp4l11190-21apt-get12:05:113
134491430,4ptp4l0-21swapper/308:55:283
134491430,3ptp4l2318-21gnome-shell11:39:581
134491430,3ptp4l0-21swapper/208:14:182
134491430,3ptp4l0-21swapper/011:33:180
134491420,9ptp4l0-21swapper/212:19:012
134491420,9ptp4l0-21swapper/212:19:012
134491420,9ptp4l0-21swapper/208:25:072
134491420,9ptp4l0-21swapper/207:47:542
134491420,8ptp4l0-21swapper/207:20:342
134491420,5ptp4l20945-21meminfo07:45:201
134491420,5ptp4l20439-21/usr/sbin/munin12:25:222
134491420,5ptp4l0-21swapper/310:35:103
134491420,4ptp4l6572-21apt-get11:55:112
134491420,4ptp4l32486-21/usr/sbin/munin11:40:162
134491420,4ptp4l25112-21apt11:25:113
134491420,4ptp4l18063-21apt-get08:50:132
134491420,4ptp4l11407-21diskstats09:45:153
134491420,4ptp4l0-21swapper/308:41:403
134491420,4ptp4l0-21swapper/008:54:210
134491420,3ptp4l15907-21apt-get11:05:110
134491420,3ptp4l12034-21irqstats12:05:181
134491410,9ptp4l0-21swapper/209:39:002
134491410,9ptp4l0-21swapper/208:59:392
134491410,9ptp4l0-21swapper/207:26:002
134491410,5ptp4l0-21swapper/311:05:323
134491410,5ptp4l0-21swapper/310:30:443
134491410,5ptp4l0-21swapper/112:30:191
134491410,5ptp4l0-21swapper/112:10:201
134491410,5ptp4l0-21swapper/111:10:131
134491410,5ptp4l0-21swapper/107:10:021
134491410,4ptp4l3093-21ntp_states11:45:210
134491410,4ptp4l28940-21users09:10:261
134491410,4ptp4l24887-21df_inode07:55:141
134491410,4ptp4l20882-21hddtemp_smartct12:25:160
134491410,4ptp4l20567-21df08:55:131
134491410,4ptp4l12358-21ntp_states10:55:230
134491410,4ptp4l10884-21apt-get08:35:131
134491410,4ptp4l0-21swapper/210:41:492
134491410,4ptp4l0-21swapper/111:05:111
134491410,4ptp4l0-21swapper/107:40:121
134491410,4ptp4l0-21swapper/011:13:110
134491410,4ptp4l0-21swapper/010:36:060
134491410,4ptp4l0-21swapper/007:42:080
134491410,3ptp4l7421-21python08:25:251
134491410,3ptp4l0-21swapper/111:40:591
134491400,8ptp4l0-21swapper/211:51:342
134491400,8ptp4l0-21swapper/209:01:572
134491400,6ptp4l26035-21sort12:35:200
134491400,5ptp4l29998-21smartctl09:15:160
134491400,5ptp4l11739-21/usr/sbin/munin08:35:203
134491400,5ptp4l10100-21phc2sys10:50:230
134491400,5ptp4l0-21swapper/107:20:281
134491400,5ptp4l0-21swapper/012:30:170
134491400,4ptp4l20933-21hddtemp_smartct11:15:171
134491400,4ptp4l13751-21df12:10:120
134491400,4ptp4l0-21swapper/311:47:173
134491400,4ptp4l0-21swapper/310:55:233
134491400,4ptp4l0-21swapper/211:31:592
134491400,4ptp4l0-21swapper/211:11:092
134491400,4ptp4l0-21swapper/210:55:222
134491400,4ptp4l0-21swapper/210:49:352
134491400,4ptp4l0-21swapper/210:27:062
134491400,4ptp4l0-21swapper/210:15:282
134491400,4ptp4l0-21swapper/209:56:022
134491400,4ptp4l0-21swapper/209:54:362
134491400,4ptp4l0-21swapper/111:53:371
134491400,4ptp4l0-21swapper/110:55:151
134491400,4ptp4l0-21swapper/110:51:371
134491400,4ptp4l0-21swapper/012:05:160
134491400,4ptp4l0-21swapper/010:00:130
134491400,4ptp4l0-21swapper/009:13:360
134491400,4ptp4l0-21swapper/007:35:030
134491400,3ptp4l603-21ls11:40:210
134491400,3ptp4l5237-21apt-get07:15:041
134491400,3ptp4l13889-21ls07:30:200
134491390,5ptp4l6830-21grep09:35:140
134491390,5ptp4l0-21swapper/008:55:130
134491390,5ptp4l0-21swapper/008:25:250
134491390,4ptp4l18638-21iostat_ios08:50:181
134491390,4ptp4l13306-21cpu08:40:132
134491390,4ptp4l0-21swapper/312:31:253
134491390,4ptp4l0-21swapper/312:22:373
134491390,4ptp4l0-21swapper/312:18:053
134491390,4ptp4l0-21swapper/312:18:053
134491390,4ptp4l0-21swapper/312:11:213
134491390,4ptp4l0-21swapper/312:00:113
134491390,4ptp4l0-21swapper/311:53:453
134491390,4ptp4l0-21swapper/311:19:113
134491390,4ptp4l0-21swapper/310:50:213
134491390,4ptp4l0-21swapper/310:46:073
134491390,4ptp4l0-21swapper/310:05:483
134491390,4ptp4l0-21swapper/308:47:503
134491390,4ptp4l0-21swapper/308:28:023
134491390,4ptp4l0-21swapper/308:08:363
134491390,4ptp4l0-21swapper/307:55:463
134491390,4ptp4l0-21swapper/212:35:312
134491390,4ptp4l0-21swapper/212:23:052
134491390,4ptp4l0-21swapper/212:11:192
134491390,4ptp4l0-21swapper/211:45:072
134491390,4ptp4l0-21swapper/211:35:282
134491390,4ptp4l0-21swapper/210:35:102
134491390,4ptp4l0-21swapper/210:20:252
134491390,4ptp4l0-21swapper/209:41:172
134491390,4ptp4l0-21swapper/209:30:072
134491390,4ptp4l0-21swapper/209:23:522
134491390,4ptp4l0-21swapper/208:48:582
134491390,4ptp4l0-21swapper/208:30:092
134491390,4ptp4l0-21swapper/208:24:332
134491390,4ptp4l0-21swapper/208:24:332
134491390,4ptp4l0-21swapper/208:15:332
134491390,4ptp4l0-21swapper/208:09:072
134491390,4ptp4l0-21swapper/208:01:422
134491390,4ptp4l0-21swapper/207:51:492
134491390,4ptp4l0-21swapper/112:20:261
134491390,4ptp4l0-21swapper/111:55:141
134491390,4ptp4l0-21swapper/111:29:331
134491390,4ptp4l0-21swapper/109:49:471
134491390,4ptp4l0-21swapper/109:30:181
134491390,4ptp4l0-21swapper/108:45:201
134491390,4ptp4l0-21swapper/108:15:171
134491390,4ptp4l0-21swapper/107:50:181
134491390,4ptp4l0-21swapper/107:35:141
134491390,4ptp4l0-21swapper/010:05:180
134491390,4ptp4l0-21swapper/009:32:280
134491390,3ptp4l26105-21phc2sys10:15:230
134491390,3ptp4l0-21swapper/312:39:313
134491390,3ptp4l0-21swapper/311:36:483
134491390,2ptp4l22882-21df09:00:130
134491380,4ptp4l0-21swapper/311:59:333
134491380,4ptp4l0-21swapper/310:26:363
134491380,4ptp4l0-21swapper/309:31:483
134491380,4ptp4l0-21swapper/309:18:003
134491380,4ptp4l0-21swapper/309:11:183
134491380,4ptp4l0-21swapper/309:09:263
134491380,4ptp4l0-21swapper/309:02:083
134491380,4ptp4l0-21swapper/308:22:123
134491380,4ptp4l0-21swapper/308:22:123
134491380,4ptp4l0-21swapper/308:15:523
134491380,4ptp4l0-21swapper/308:12:223
134491380,4ptp4l0-21swapper/308:02:483
134491380,4ptp4l0-21swapper/209:25:122
134491380,4ptp4l0-21swapper/209:10:392
134491380,4ptp4l0-21swapper/207:11:152
134491380,4ptp4l0-21swapper/110:46:201
134491380,4ptp4l0-21swapper/009:50:150
134491380,4ptp4l0-21swapper/008:11:470
134491380,4ptp4l0-21swapper/008:00:120
134491380,4ptp4l0-21swapper/007:25:160
134491380,3ptp4l7290-21awk07:15:270
134491380,3ptp4l0-21swapper/311:40:153
134491380,3ptp4l0-21swapper/311:23:053
134491380,3ptp4l0-21swapper/109:16:441
134491380,3ptp4l0-21swapper/012:00:560
3152993728,7cyclictest41-21ksoftirqd/309:53:113
134491370,4ptp4l0-21swapper/308:50:503
134491370,4ptp4l0-21swapper/307:51:343
134491370,4ptp4l0-21swapper/307:28:043
134491370,4ptp4l0-21swapper/307:12:163
134491370,4ptp4l0-21swapper/010:47:330
134491370,4ptp4l0-21swapper/010:10:360
134491370,3ptp4l0-21swapper/309:55:233
134491370,3ptp4l0-21swapper/309:29:073
134491370,3ptp4l0-21swapper/307:31:233
134491370,3ptp4l0-21swapper/307:21:033
134491370,3ptp4l0-21swapper/109:42:451
134491360,3ptp4l0-21swapper/307:40:223
134491360,3ptp4l0-21swapper/307:35:133
134491360,3ptp4l0-21swapper/009:42:440
134491350,4ptp4l315299cyclictest09:40:263
134491350,4ptp4l0-21swapper/307:18:383
134491350,3ptp4l0-21swapper/311:31:063
46198340,4rtkit-daemon0-21swapper/311:13:513
134491340,4ptp4l0-21swapper/310:21:523
134491290,4ptp4l0-21swapper/307:49:383
3152992620,3cyclictest41-21ksoftirqd/310:15:253
7002235,10sleep3715-21apt-get07:05:113
137891233,12phc2sys0-21swapper/207:05:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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