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2026-08-08 - 23:45
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Sat Aug 08, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2950099693,64cyclictest0-21swapper/209:50:292
2950099693,64cyclictest0-21swapper/209:50:292
29500996834,5cyclictest33-21ksoftirqd/210:20:232
134491680,3ptp4l0-21swapper/312:39:563
29500996734,5cyclictest33-21ksoftirqd/210:10:012
29500996733,6cyclictest33-21ksoftirqd/210:20:002
134491670,4ptp4l0-21swapper/312:33:393
134491670,4ptp4l0-21swapper/311:10:193
134491660,19ptp4l3744-21ls10:50:211
29500996432,5cyclictest33-21ksoftirqd/209:00:192
29500996329,7cyclictest33-21ksoftirqd/210:00:002
29500996325,8cyclictest33-21ksoftirqd/208:50:192
29500996127,5cyclictest33-21ksoftirqd/209:35:182
29500996125,5cyclictest33-21ksoftirqd/212:25:292
29500996030,5cyclictest33-21ksoftirqd/210:00:172
29500996029,8cyclictest33-21ksoftirqd/209:50:002
29500996028,5cyclictest33-21ksoftirqd/212:35:162
29500996028,5cyclictest33-21ksoftirqd/211:35:152
29500996024,6cyclictest33-21ksoftirqd/212:00:172
29500996024,6cyclictest33-21ksoftirqd/207:20:252
29500996024,5cyclictest33-21ksoftirqd/212:30:172
29500996023,5cyclictest33-21ksoftirqd/212:10:192
29500996023,5cyclictest33-21ksoftirqd/210:25:292
134491600,5ptp4l728-21tune2fs10:45:173
29500995930,8cyclictest33-21ksoftirqd/209:15:192
29500995929,5cyclictest33-21ksoftirqd/210:30:192
29498995919,8cyclictest9-21ksoftirqd/011:40:270
134491590,4ptp4l0-21swapper/207:45:122
134491590,4ptp4l0-21swapper/009:00:220
134491590,2ptp4l31770-21users09:30:293
29500995827,9cyclictest33-21ksoftirqd/209:40:122
29500995824,5cyclictest33-21ksoftirqd/209:30:192
134491580,3ptp4l0-21swapper/107:11:151
134491580,3ptp4l0-21swapper/007:14:070
134491570,3ptp4l0-21swapper/308:30:223
134491570,3ptp4l0-21swapper/009:35:190
134491570,12ptp4l0-21swapper/109:08:471
134491570,11ptp4l0-21swapper/007:05:080
29500995630,5cyclictest33-21ksoftirqd/208:00:012
2949899563,7cyclictest0-21swapper/008:45:240
134491560,4ptp4l0-21swapper/111:15:231
134491560,3ptp4l0-21swapper/307:54:483
134491560,3ptp4l0-21swapper/307:31:283
29500995529,9cyclictest33-21ksoftirqd/211:05:262
134491550,4ptp4l0-21swapper/311:29:263
2950099544,8cyclictest33-21ksoftirqd/208:55:222
2950099542,7cyclictest33-21ksoftirqd/208:20:002
29500995424,3cyclictest33-21ksoftirqd/208:47:402
29500995421,5cyclictest33-21ksoftirqd/211:45:202
2949899543,7cyclictest0-21swapper/009:45:160
134491540,5ptp4l0-21swapper/107:05:581
134491540,4ptp4l0-21swapper/310:38:513
134491540,4ptp4l0-21swapper/309:29:183
2950099535,7cyclictest19246-21fschecks_count11:25:162
2950099532,30cyclictest0-21swapper/211:01:072
29500995319,7cyclictest33-21ksoftirqd/207:55:142
2949899536,5cyclictest0-21swapper/008:10:130
2949899534,6cyclictest0-21swapper/009:10:190
134491530,4ptp4l0-21swapper/312:03:203
134491530,4ptp4l0-21swapper/309:24:193
134491530,4ptp4l0-21swapper/212:24:052
134491530,3ptp4l0-21swapper/308:18:133
134491530,3ptp4l0-21swapper/111:46:181
2950099525,4cyclictest2323-21llvmpipe-008:22:582
2950099524,3cyclictest33-21ksoftirqd/207:50:232
2950099522,7cyclictest0-21swapper/209:05:262
2950099522,11cyclictest0-21swapper/209:10:282
29500995218,7cyclictest33-21ksoftirqd/207:35:142
2949899525,6cyclictest0-21swapper/009:25:140
2949899524,6cyclictest0-21swapper/012:05:240
2949899524,6cyclictest0-21swapper/011:45:140
2949899524,6cyclictest0-21swapper/010:25:160
134491520,4ptp4l0-21swapper/210:44:032
134491520,4ptp4l0-21swapper/210:36:592
134491520,3ptp4l0-21swapper/311:20:193
134491520,11ptp4l0-21swapper/110:14:301
2950099516,9cyclictest33-21ksoftirqd/208:34:592
2950099516,8cyclictest33-21ksoftirqd/208:35:192
2950099515,5cyclictest33-21ksoftirqd/210:10:132
2950099515,2cyclictest121rcu_preempt09:25:562
2950099515,10cyclictest33-21ksoftirqd/207:10:222
2950099512,6cyclictest33-21ksoftirqd/210:55:302
2950099512,6cyclictest0-21swapper/209:20:122
29500995125,8cyclictest33-21ksoftirqd/211:20:142
2950099512,10cyclictest0-21swapper/211:30:302
2950099510,8cyclictest33-21ksoftirqd/212:05:222
2949899516,6cyclictest0-21swapper/009:40:270
2949899512,6cyclictest0-21swapper/011:35:140
2949899512,6cyclictest0-21swapper/008:40:240
2949899512,5cyclictest0-21swapper/007:55:230
134491510,4ptp4l0-21swapper/312:28:593
134491510,4ptp4l0-21swapper/309:06:493
134491510,4ptp4l0-21swapper/211:16:252
134491510,4ptp4l0-21swapper/109:35:311
134491510,3ptp4l0-21swapper/310:26:513
2950099506,6cyclictest33-21ksoftirqd/211:55:202
2950099505,8cyclictest33-21ksoftirqd/208:15:002
2950099502,6cyclictest0-21swapper/207:30:142
29500995023,6cyclictest33-21ksoftirqd/207:15:192
29500995022,9cyclictest33-21ksoftirqd/207:25:282
2949899506,6cyclictest0-21swapper/009:57:580
134491500,4ptp4l0-21swapper/311:58:093
134491500,4ptp4l0-21swapper/309:46:003
134491500,4ptp4l0-21swapper/308:56:253
134491500,3ptp4l0-21swapper/107:19:371
134491500,10ptp4l0-21swapper/108:54:511
2950099495,8cyclictest33-21ksoftirqd/208:40:242
2950099494,5cyclictest33-21ksoftirqd/211:40:262
2950099492,5cyclictest33-21ksoftirqd/211:15:012
2950099492,12cyclictest0-21swapper/208:05:272
2950099490,6cyclictest12120-21cut07:40:212
2949899491,9cyclictest30945-21sed08:20:210
2949899491,5cyclictest9-21ksoftirqd/009:05:250
134491490,4ptp4l0-21swapper/310:24:543
134491490,4ptp4l0-21swapper/309:38:193
134491490,4ptp4l0-21swapper/309:15:173
134491490,3ptp4l755-21ntp_states07:15:233
134491490,3ptp4l0-21swapper/307:10:033
2950099483,8cyclictest33-21ksoftirqd/210:50:272
2950099482,7cyclictest33-21ksoftirqd/210:45:212
2950099482,10cyclictest0-21swapper/208:29:262
2950099481,5cyclictest33-21ksoftirqd/212:15:182
2949899485,6cyclictest0-21swapper/009:21:490
2949899482,6cyclictest9-21ksoftirqd/009:00:000
2949899482,5cyclictest0-21swapper/010:05:220
2950099470,6cyclictest31031-21irqrtprio11:50:202
2949899473,6cyclictest9-21ksoftirqd/011:10:270
2949899472,5cyclictest0-21swapper/012:10:470
2949899471,6cyclictest134491ptp4l07:25:000
2949899471,6cyclictest0-21swapper/010:55:180
134491470,4ptp4l0-21swapper/110:15:401
134491470,4ptp4l0-21swapper/108:39:291
134491470,4ptp4l0-21swapper/011:52:510
134491470,3ptp4l0-21swapper/311:09:593
134491470,3ptp4l0-21swapper/310:04:143
2949899465,6cyclictest0-21swapper/010:00:130
134491460,4ptp4l391rcuc/307:45:173
134491460,4ptp4l0-21swapper/010:20:180
134491460,3ptp4l0-21swapper/107:55:591
134491460,2ptp4l0-21swapper/308:35:243
2950199451,5cyclictest134491ptp4l07:45:003
2950199450,2cyclictest134491ptp4l07:25:223
2949899453,6cyclictest0-21swapper/008:05:210
2949899451,6cyclictest0-21swapper/010:35:000
2949899451,5cyclictest17607-21sed11:20:220
2949899450,5cyclictest16528-21date11:20:010
134491450,4ptp4l0-21swapper/309:10:073
134491450,10ptp4l0-21swapper/010:49:170
134491440,7ptp4l0-21swapper/011:28:470
134491440,5ptp4l4928-21hddtemp_smartct08:35:160
134491440,5ptp4l0-21swapper/108:00:041
134491440,4ptp4l0-21swapper/007:40:230
134491440,3ptp4l0-21swapper/111:50:241
2949899433,6cyclictest0-21swapper/007:37:450
2949899430,6cyclictest19034-21/usr/sbin/munin12:35:250
134491430,9ptp4l0-21swapper/008:31:300
134491430,4ptp4l21197-21apt-get11:30:140
134491430,4ptp4l20274-21apt-get08:00:020
134491430,4ptp4l15983-21apt-get10:10:030
134491430,4ptp4l0-21swapper/309:40:143
134491430,4ptp4l0-21swapper/108:19:381
134491430,4ptp4l0-21swapper/009:50:280
134491430,4ptp4l0-21swapper/009:50:280
134491430,3ptp4l25805-21apt-get11:40:131
134491430,3ptp4l0-21swapper/312:16:333
134491430,3ptp4l0-21swapper/112:35:101
2949899424,6cyclictest0-21swapper/011:07:050
2949899422,7cyclictest0-21swapper/009:31:410
134691420,11getstats0-21swapper/109:19:161
134691420,10getstats0-21swapper/110:55:521
134691420,10getstats0-21swapper/110:32:371
134691420,10getstats0-21swapper/109:26:211
134691420,10getstats0-21swapper/109:23:161
134691420,10getstats0-21swapper/108:40:451
134691420,10getstats0-21swapper/108:09:461
134691420,10getstats0-21swapper/107:20:591
134491420,5ptp4l0-21swapper/111:30:251
134491420,5ptp4l0-21swapper/110:20:191
134491420,5ptp4l0-21swapper/011:00:140
134491420,5ptp4l0-21swapper/007:34:030
134491420,4ptp4l8386-21ntp_states12:10:243
134491420,4ptp4l3213-21/usr/sbin/munin09:40:201
134491420,4ptp4l2982-21df_inode12:00:161
134491420,4ptp4l14878-21ntp_states08:55:241
134491420,4ptp4l12196-21diskstats12:20:160
134491420,4ptp4l0-21swapper/110:08:001
134491420,4ptp4l0-21swapper/009:18:130
134491420,4ptp4l0-21swapper/008:18:260
134491420,3ptp4l6232-21ls09:45:281
134491420,3ptp4l2007-21apt-get07:20:123
134491420,3ptp4l19860-21ntp_states10:15:270
134491420,3ptp4l16287-21apt-get12:30:030
134691410,11getstats0-21swapper/111:05:151
134491410,5ptp4l9-21ksoftirqd/010:38:520
134491410,5ptp4l2776-21grep10:50:130
134491410,5ptp4l0-21swapper/312:20:223
134491410,5ptp4l0-21swapper/310:50:133
134491410,5ptp4l0-21swapper/308:25:273
134491410,5ptp4l0-21swapper/207:05:012
134491410,5ptp4l0-21swapper/109:50:221
134491410,5ptp4l0-21swapper/109:50:221
134491410,5ptp4l0-21swapper/109:00:231
134491410,5ptp4l0-21swapper/107:44:181
134491410,5ptp4l0-21swapper/008:50:270
134491410,4ptp4l30371-21perl08:20:173
134491410,4ptp4l24833-21python11:35:271
134491410,4ptp4l20878-21df09:10:151
134491410,4ptp4l14954-21/usr/sbin/munin07:45:241
134491410,4ptp4l14544-21df_inode12:25:161
134491410,4ptp4l0-21swapper/311:00:183
134491410,4ptp4l0-21swapper/310:55:213
134491410,4ptp4l0-21swapper/310:30:283
134491410,4ptp4l0-21swapper/310:05:193
134491410,4ptp4l0-21swapper/308:40:283
134491410,4ptp4l0-21swapper/110:45:201
134491410,4ptp4l0-21swapper/108:20:151
134491410,4ptp4l0-21swapper/008:25:220
134491410,3ptp4l9678-21iostat08:45:181
134491410,3ptp4l32702-21apt-get11:55:141
134491410,3ptp4l32289-21df07:15:150
134491410,3ptp4l26113-21diskstats11:40:153
134491410,3ptp4l0-21swapper/111:26:391
134691400,9getstats0-21swapper/109:30:151
134691400,9getstats0-21swapper/107:25:411
134691400,10getstats0-21swapper/111:01:421
134491400,5ptp4l0-21swapper/311:35:183
134491400,5ptp4l0-21swapper/012:25:250
134491400,4ptp4l0-21swapper/311:49:433
134491400,4ptp4l0-21swapper/311:15:173
134491400,4ptp4l0-21swapper/310:42:173
134491400,4ptp4l0-21swapper/309:00:293
134491400,4ptp4l0-21swapper/308:05:163
134491400,4ptp4l0-21swapper/307:55:183
134491400,4ptp4l0-21swapper/307:38:183
134491400,4ptp4l0-21swapper/112:14:291
134491400,4ptp4l0-21swapper/108:30:321
134491400,4ptp4l0-21swapper/012:17:490
134491400,4ptp4l0-21swapper/010:41:540
134491400,4ptp4l0-21swapper/007:48:360
134491400,4ptp4l0-21swapper/007:25:370
134491400,3ptp4l3248-21iostat_ios12:00:190
134491400,3ptp4l16866-21hddtemp_smartct10:10:173
134491400,3ptp4l1559-21/usr/sbin/munin11:55:270
134491400,3ptp4l0-21swapper/308:11:493
134491400,3ptp4l0-21swapper/110:40:151
134691390,9getstats0-21swapper/110:00:451
134691390,10getstats0-21swapper/109:57:491
134691390,10getstats0-21swapper/107:35:271
134491390,4ptp4l0-21swapper/312:05:133
134491390,4ptp4l0-21swapper/309:50:223
134491390,4ptp4l0-21swapper/309:50:213
134491390,4ptp4l0-21swapper/308:45:573
134491390,4ptp4l0-21swapper/308:02:033
134491390,4ptp4l0-21swapper/112:30:091
134491390,4ptp4l0-21swapper/112:15:441
134491390,4ptp4l0-21swapper/112:06:221
134491390,4ptp4l0-21swapper/111:13:101
134491390,4ptp4l0-21swapper/108:25:211
134491390,4ptp4l0-21swapper/107:51:361
134491390,4ptp4l0-21swapper/007:50:100
134491390,3ptp4l0-21swapper/311:54:383
134491390,3ptp4l0-21swapper/311:30:383
134491390,3ptp4l0-21swapper/310:15:193
134491390,3ptp4l0-21swapper/309:58:533
134491390,3ptp4l0-21swapper/111:20:071
134491390,3ptp4l0-21swapper/110:35:291
134491390,3ptp4l0-21swapper/107:30:191
134491380,5ptp4l0-21swapper/307:05:063
134491380,4ptp4l0-21swapper/110:25:011
134491380,3ptp4l0-21swapper/308:54:533
134491380,3ptp4l0-21swapper/112:20:061
134491380,3ptp4l0-21swapper/108:10:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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