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2026-03-23 - 21:31
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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 Mon Mar 23, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16720996535,9cyclictest33-21ksoftirqd/211:50:152
134491610,3ptp4l0-21swapper/309:55:183
134491610,3ptp4l0-21swapper/011:45:150
134491610,20ptp4l0-21swapper/108:02:131
134491600,4ptp4l0-21swapper/208:05:202
134491590,3ptp4l1301-21snmpd10:23:123
134491580,4ptp4l0-21swapper/209:05:272
134491580,4ptp4l0-21swapper/109:55:281
134491580,3ptp4l0-21swapper/109:15:301
134491580,17ptp4l0-21swapper/109:10:261
134491570,4ptp4l0-21swapper/311:51:483
1672099566,5cyclictest33-21ksoftirqd/212:25:152
16720995627,4cyclictest33-21ksoftirqd/209:40:252
134491560,5ptp4l0-21swapper/112:20:111
1672099554,7cyclictest0-21swapper/211:30:222
1672099554,7cyclictest0-21swapper/208:50:262
1672099554,7cyclictest0-21swapper/208:00:262
1672099554,6cyclictest0-21swapper/207:50:242
215282540,2sleep3391rcuc/307:20:123
1672099543,9cyclictest0-21swapper/209:28:012
1672099543,7cyclictest0-21swapper/212:05:222
1672099543,7cyclictest0-21swapper/212:05:212
1672099534,7cyclictest0-21swapper/210:48:272
1672099534,7cyclictest0-21swapper/207:25:152
1672099534,6cyclictest0-21swapper/210:05:012
1672099534,6cyclictest0-21swapper/208:10:212
1672099533,6cyclictest0-21swapper/210:10:162
1672099533,6cyclictest0-21swapper/207:30:262
134491530,3ptp4l0-21swapper/009:18:400
134491530,10ptp4l0-21swapper/010:25:180
1672099525,5cyclictest0-21swapper/209:45:112
1672099524,6cyclictest0-21swapper/207:15:172
1672099522,6cyclictest33-21ksoftirqd/211:59:592
1672099521,5cyclictest0-21swapper/208:40:162
134491520,4ptp4l0-21swapper/310:30:203
134491520,4ptp4l0-21swapper/307:55:163
134491520,4ptp4l0-21swapper/009:35:290
1672099517,6cyclictest0-21swapper/210:43:132
1672099515,5cyclictest0-21swapper/207:45:222
1672099514,6cyclictest0-21swapper/209:32:532
1672099514,11cyclictest0-21swapper/211:10:262
1672099513,6cyclictest0-21swapper/207:37:352
1672099512,6cyclictest0-21swapper/211:00:252
1672099512,14cyclictest0-21swapper/208:22:502
134491510,4ptp4l0-21swapper/008:20:170
1672099505,11cyclictest0-21swapper/212:00:242
1672099504,6cyclictest0-21swapper/211:05:182
1672099504,11cyclictest0-21swapper/207:20:232
1672099503,6cyclictest33-21ksoftirqd/209:15:292
1672099502,7cyclictest0-21swapper/207:55:172
134491500,9ptp4l15140-21memory07:05:212
134491500,4ptp4l0-21swapper/108:19:001
134491500,11ptp4l14174-21/usr/sbin/munin07:05:263
1672099496,6cyclictest0-21swapper/210:51:282
1672099495,6cyclictest0-21swapper/209:35:162
1672099494,5cyclictest0-21swapper/209:50:282
1672099494,12cyclictest0-21swapper/210:15:272
1672099493,10cyclictest0-21swapper/210:00:232
1672099492,6cyclictest0-21swapper/211:28:592
1672099492,6cyclictest0-21swapper/208:16:582
1672099491,6cyclictest33-21ksoftirqd/210:40:012
134491490,4ptp4l0-21swapper/307:51:293
134491490,3ptp4l0-21swapper/012:25:520
1672099487,5cyclictest0-21swapper/211:18:112
1672099485,5cyclictest0-21swapper/211:43:112
1672099485,10cyclictest0-21swapper/209:55:162
1672099483,6cyclictest33-21ksoftirqd/212:20:262
1672099482,6cyclictest33-21ksoftirqd/212:35:262
1672099482,6cyclictest33-21ksoftirqd/212:35:262
134491480,4ptp4l0-21swapper/110:57:011
134491480,4ptp4l0-21swapper/009:25:090
134491480,3ptp4l0-21swapper/012:09:090
134491480,3ptp4l0-21swapper/012:09:080
1672099476,5cyclictest0-21swapper/209:21:212
1672099475,7cyclictest0-21swapper/212:14:162
1672099475,6cyclictest33-21ksoftirqd/208:45:252
1672099474,6cyclictest0-21swapper/211:37:052
1672099474,6cyclictest0-21swapper/209:02:362
1672099474,11cyclictest0-21swapper/207:40:232
1672099473,6cyclictest0-21swapper/210:30:172
1672099472,39cyclictest0-21swapper/208:29:432
134491470,7ptp4l0-21swapper/108:10:271
134491470,15ptp4l1317-21runrttasks07:34:271
134491470,12ptp4l0-21swapper/210:25:162
1672099465,5cyclictest0-21swapper/209:12:552
1672099464,6cyclictest33-21ksoftirqd/211:00:002
134491460,4ptp4l0-21swapper/110:01:581
134491460,3ptp4l0-21swapper/312:10:203
134491460,3ptp4l0-21swapper/311:20:173
134491460,3ptp4l0-21swapper/311:00:193
134491460,3ptp4l0-21swapper/112:36:271
134491460,3ptp4l0-21swapper/112:36:271
134491460,3ptp4l0-21swapper/111:34:211
134491460,3ptp4l0-21swapper/109:23:591
134491460,3ptp4l0-21swapper/011:30:390
1672099455,6cyclictest0-21swapper/212:19:252
1672099454,6cyclictest0-21swapper/211:21:482
1672099450,5cyclictest33-21ksoftirqd/212:30:282
134491450,3ptp4l0-21swapper/109:40:361
134491450,3ptp4l0-21swapper/108:52:391
134491450,3ptp4l0-21swapper/107:50:191
134491450,10ptp4l0-21swapper/310:59:163
1672099445,5cyclictest0-21swapper/208:32:392
1672099442,6cyclictest0-21swapper/211:45:142
134491440,4ptp4l2439-21meminfo11:15:193
134491440,4ptp4l0-21swapper/011:05:190
134491440,3ptp4l30979-21apache211:29:251
134491440,3ptp4l0-21swapper/311:05:393
134491440,3ptp4l0-21swapper/310:10:003
134491440,3ptp4l0-21swapper/012:18:210
134491440,3ptp4l0-21swapper/007:13:240
1672099433,7cyclictest0-21swapper/207:10:242
134491430,9ptp4l0-21swapper/007:51:590
134491430,8ptp4l0-21swapper/008:29:500
134491430,5ptp4l0-21swapper/010:50:180
134491430,5ptp4l0-21swapper/010:40:190
134491430,5ptp4l0-21swapper/008:40:120
134491430,4ptp4l7445-21apt-get09:10:113
134491430,4ptp4l0-21swapper/112:07:071
134491430,4ptp4l0-21swapper/112:07:071
134491430,3ptp4l2318-21gnome-shell09:24:590
134491430,3ptp4l0-21swapper/108:45:441
134491430,3ptp4l0-21swapper/012:36:020
134491430,3ptp4l0-21swapper/012:36:020
134491430,3ptp4l0-21swapper/007:15:110
1672099422,13cyclictest0-21swapper/210:20:232
134491420,9ptp4l0-21swapper/008:54:300
134491420,6ptp4l8888-21/usr/sbin/munin10:20:200
134491420,6ptp4l14109-21/usr/sbin/munin11:40:200
134491420,5ptp4l25183-21ls07:25:280
134491420,5ptp4l20279-21ps07:15:243
134491420,5ptp4l17222-21apt-get10:40:023
134491420,5ptp4l0-21swapper/310:45:123
134491420,4ptp4l23773-21ntp_states12:00:241
134491420,4ptp4l2318-21gnome-shell09:26:591
134491420,4ptp4l21917-21hddtemp_smartct09:40:150
134491420,4ptp4l19974-21memory08:25:203
134491420,4ptp4l19020-21apt-get08:25:111
134491420,4ptp4l13122-21irqstats09:20:193
134491420,4ptp4l0-21swapper/310:25:323
134491420,4ptp4l0-21swapper/011:13:390
134491420,4ptp4l0-21swapper/007:59:240
134491420,3ptp4l6209-21ls07:55:211
134491420,3ptp4l5238-21ls11:20:251
134491420,3ptp4l4999-21ls10:10:280
16721994135,3cyclictest41-21ksoftirqd/307:30:233
134491410,5ptp4l0-21swapper/308:40:113
134491410,4ptp4l8625-21ntp_states08:00:253
134491410,4ptp4l5458-21diskstats09:05:150
134491410,4ptp4l24209-21df09:45:141
134491410,4ptp4l18892-21irqstats11:50:211
134491410,4ptp4l1367-21df_inode10:05:170
134491410,4ptp4l0-21swapper/311:28:033
134491410,4ptp4l0-21swapper/111:55:141
134491410,4ptp4l0-21swapper/108:35:151
134491410,4ptp4l0-21swapper/011:16:270
134491410,4ptp4l0-21swapper/010:57:430
134491410,3ptp4l4176-21apt-get12:30:101
134491410,3ptp4l22577-21df_inode10:50:141
134491410,3ptp4l18636-21memory10:40:201
134491410,3ptp4l16726-21apt-get08:20:121
134491410,3ptp4l0-21swapper/112:18:551
16721994035,3cyclictest41-21ksoftirqd/312:00:003
1672099402,6cyclictest0-21swapper/208:55:322
1672099402,6cyclictest0-21swapper/208:55:322
134491400,6ptp4l0-21swapper/011:55:250
134491400,5ptp4l25452-21sshd08:37:250
134491400,5ptp4l0-21swapper/012:20:130
134491400,5ptp4l0-21swapper/011:35:150
134491400,5ptp4l0-21swapper/010:30:130
134491400,5ptp4l0-21swapper/009:10:270
134491400,4ptp4l28194-21mailstats11:00:240
134491400,4ptp4l24941-21/usr/sbin/munin12:05:133
134491400,4ptp4l24941-21/usr/sbin/munin12:05:133
134491400,4ptp4l21309-21mailstats10:45:230
134491400,4ptp4l13222-21/usr/sbin/munin11:40:121
134491400,4ptp4l0-21swapper/311:10:103
134491400,4ptp4l0-21swapper/310:15:263
134491400,4ptp4l0-21swapper/309:50:233
134491400,4ptp4l0-21swapper/309:25:193
134491400,4ptp4l0-21swapper/309:05:173
134491400,4ptp4l0-21swapper/308:30:283
134491400,4ptp4l0-21swapper/110:20:201
134491400,4ptp4l0-21swapper/011:29:000
134491400,4ptp4l0-21swapper/011:20:250
134491400,4ptp4l0-21swapper/010:17:570
134491400,4ptp4l0-21swapper/009:58:330
134491400,4ptp4l0-21swapper/009:30:120
134491400,4ptp4l0-21swapper/009:00:230
134491400,4ptp4l0-21swapper/008:56:390
134491400,4ptp4l0-21swapper/008:56:390
134491400,4ptp4l0-21swapper/008:45:210
134491400,4ptp4l0-21swapper/008:15:140
134491400,4ptp4l0-21swapper/008:05:230
134491400,4ptp4l0-21swapper/007:48:030
134491400,4ptp4l0-21swapper/007:43:370
134491400,4ptp4l0-21swapper/007:33:520
134491400,3ptp4l8356-21irqstats08:00:210
134491400,3ptp4l28486-21df07:35:150
134491400,3ptp4l27640-21python09:50:261
134491400,3ptp4l27253-21apt-get12:10:110
134491400,3ptp4l24564-21memory08:35:212
134491400,3ptp4l17716-21memory07:10:203
134491400,3ptp4l10098-21apt-get10:25:031
134491400,3ptp4l0-21swapper/112:10:161
134491400,3ptp4l0-21swapper/009:45:220
134491400,2ptp4l24552-21ls08:35:203
46198390,4rtkit-daemon0-21swapper/309:44:023
134491390,5ptp4l17875-21ntpq07:10:221
134491390,5ptp4l11106-21cut11:35:141
134491390,4ptp4l8148-21/usr/sbin/munin12:35:283
134491390,4ptp4l8148-21/usr/sbin/munin12:35:283
134491390,4ptp4l16380-21uname11:45:203
134491390,4ptp4l0-21swapper/311:40:173
134491390,4ptp4l0-21swapper/310:51:343
134491390,4ptp4l0-21swapper/310:13:103
134491390,4ptp4l0-21swapper/309:30:233
134491390,4ptp4l0-21swapper/309:15:203
134491390,4ptp4l0-21swapper/308:57:123
134491390,4ptp4l0-21swapper/308:57:123
134491390,4ptp4l0-21swapper/308:10:173
134491390,4ptp4l0-21swapper/308:05:223
134491390,4ptp4l0-21swapper/307:27:203
134491390,4ptp4l0-21swapper/111:45:011
134491390,4ptp4l0-21swapper/111:12:391
134491390,4ptp4l0-21swapper/110:37:281
134491390,4ptp4l0-21swapper/110:30:141
134491390,4ptp4l0-21swapper/109:36:051
134491390,4ptp4l0-21swapper/109:30:111
134491390,4ptp4l0-21swapper/109:00:211
134491390,4ptp4l0-21swapper/108:05:171
134491390,4ptp4l0-21swapper/107:50:001
134491390,4ptp4l0-21swapper/107:15:281
134491390,4ptp4l0-21swapper/012:00:210
134491390,4ptp4l0-21swapper/011:50:230
134491390,4ptp4l0-21swapper/010:35:230
134491390,4ptp4l0-21swapper/010:03:060
134491390,4ptp4l0-21swapper/009:50:190
134491390,4ptp4l0-21swapper/008:30:130
134491390,4ptp4l0-21swapper/008:11:560
134491390,4ptp4l0-21swapper/007:20:100
134491390,3ptp4l0-21swapper/307:40:213
134491390,3ptp4l0-21swapper/112:25:111
134491390,3ptp4l0-21swapper/109:05:141
134491390,3ptp4l0-21swapper/107:25:201
134491390,2ptp4l22354-21strings08:30:211
16719993832,4cyclictest25-21ksoftirqd/110:05:141
134491380,5ptp4l0-21swapper/308:50:323
134491380,4ptp4l0-21swapper/312:30:183
134491380,4ptp4l0-21swapper/311:39:123
134491380,4ptp4l0-21swapper/311:30:033
134491380,4ptp4l0-21swapper/310:35:023
134491380,4ptp4l0-21swapper/309:35:533
134491380,4ptp4l0-21swapper/309:00:343
134491380,4ptp4l0-21swapper/308:45:163
134491380,4ptp4l0-21swapper/307:48:003
134491380,4ptp4l0-21swapper/111:16:051
134491380,4ptp4l0-21swapper/110:15:141
134491380,4ptp4l0-21swapper/108:55:171
134491380,4ptp4l0-21swapper/108:55:171
134491380,4ptp4l0-21swapper/107:40:051
134491380,4ptp4l0-21swapper/107:20:111
134491380,3ptp4l30212-21/usr/sbin/munin11:05:211
134491380,3ptp4l28776-21if_enp4s007:35:181
134491380,3ptp4l23958-21gpgv09:45:013
134491380,3ptp4l0-21swapper/110:45:201
134491380,3ptp4l0-21swapper/110:10:331
134491380,3ptp4l0-21swapper/108:40:011
134491370,4ptp4l0-21swapper/312:22:363
134491370,4ptp4l0-21swapper/310:03:003
134491370,3ptp4l0-21swapper/312:19:343
134491370,3ptp4l0-21swapper/308:16:043
134491370,3ptp4l0-21swapper/111:00:251
134491370,3ptp4l0-21swapper/012:30:100
46198360,4rtkit-daemon0-21swapper/312:27:083
134491360,3ptp4l0-21swapper/312:03:313
134491360,3ptp4l0-21swapper/307:38:073
16721992823,3cyclictest41-21ksoftirqd/308:20:183
152592235,11sleep10-21swapper/107:05:231
46198190,12rtkit-daemon30954-21apache207:09:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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