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2026-09-04 - 16:45
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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 792 highest latencies:
System rackdslot3.osadl.org (updated Fri Sep 04, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2651023100,49sleep10-21swapper/107:09:121
1960522200,4sleep219624-21sort07:08:542
3202022170,8sleep00-21swapper/007:08:180
139491205171,23phc2sys0-21swapper/307:08:583
682121410,4sleep22173999cyclictest11:55:162
234362880,2sleep20-21swapper/210:15:152
2173899695,23cyclictest30010-21cron10:30:001
2173899661,26cyclictest11284-21/usr/sbin/munin08:40:221
2173899611,26cyclictest22774-21chrt12:28:521
2173899590,3cyclictest27542-21chrt12:39:201
2173899590,26cyclictest11868-21df_inode07:35:121
2173899571,24cyclictest18913-21idleruntime12:20:181
2173899570,3cyclictest27893-21chrt08:09:461
2173899570,2cyclictest62102chrt07:24:061
2173899570,2cyclictest226922sleep110:12:331
2173899570,25cyclictest8372-21seq09:42:081
2173899561,25cyclictest6661-21dpkg07:25:001
2173899550,24cyclictest21372-21vmstat09:00:261
139391550,1ptp4l401ktimersoftd/309:14:083
2173899541,25cyclictest29696-21awk09:20:161
2173899540,26cyclictest844-21/usr/sbin/munin10:35:181
21737995422,9cyclictest9-21ksoftirqd/010:50:210
2173899530,26cyclictest1010-21taskset07:12:101
21737995326,9cyclictest9-21ksoftirqd/010:35:150
21737995316,8cyclictest9-21ksoftirqd/009:50:260
2173799526,9cyclictest9-21ksoftirqd/011:25:000
2173799526,6cyclictest9-21ksoftirqd/010:00:160
157722520,1sleep10-21swapper/112:15:011
139391520,1ptp4l401ktimersoftd/309:22:403
2173799516,8cyclictest9-21ksoftirqd/010:20:260
2173799515,8cyclictest9-21ksoftirqd/007:15:130
243152500,2sleep00-21swapper/012:30:200
243152500,2sleep00-21swapper/012:30:200
2173899500,1cyclictest0-21swapper/108:13:341
2173799505,8cyclictest9-21ksoftirqd/011:00:140
2173799503,7cyclictest9-21ksoftirqd/008:22:020
2173799502,6cyclictest9-21ksoftirqd/007:10:180
2173799501,7cyclictest9-21ksoftirqd/008:35:150
286442490,3sleep20-21swapper/207:10:582
2173899490,24cyclictest17844-21chrt12:17:261
2173899490,22cyclictest156782sleep107:41:021
2173799496,10cyclictest9-21ksoftirqd/009:55:130
2173799494,9cyclictest9-21ksoftirqd/012:15:200
2173799494,9cyclictest9-21ksoftirqd/009:15:110
2173799493,8cyclictest9-21ksoftirqd/007:35:220
2173899480,44cyclictest320632sleep110:30:591
2173799483,8cyclictest9-21ksoftirqd/007:25:000
2173799483,5cyclictest9-21ksoftirqd/009:35:240
188472480,2sleep20-21swapper/211:10:312
2173899473,23cyclictest545-21gmain11:08:421
2173899472,33cyclictest12919-21idleruntime11:00:161
2173899471,24cyclictest19269-21chrt08:59:081
2173899470,24cyclictest27751-21date10:25:001
2173799475,9cyclictest9-21ksoftirqd/009:50:010
2173799475,8cyclictest9-21ksoftirqd/012:20:140
2173799475,10cyclictest9-21ksoftirqd/007:30:120
2173799473,7cyclictest9-21ksoftirqd/011:25:250
2173799473,5cyclictest9-21ksoftirqd/007:40:240
2173799472,9cyclictest9-21ksoftirqd/007:45:260
2173799472,6cyclictest9-21ksoftirqd/009:45:010
2173799463,6cyclictest9-21ksoftirqd/011:45:250
2173799463,6cyclictest9-21ksoftirqd/008:45:130
2173799463,5cyclictest9-21ksoftirqd/010:40:110
2173799462,9cyclictest9-21ksoftirqd/011:05:590
2173799462,5cyclictest9-21ksoftirqd/010:32:000
2173799461,6cyclictest9-21ksoftirqd/011:50:160
2173799460,11cyclictest9-21ksoftirqd/011:40:150
2173899451,26cyclictest169062chrt08:54:471
2173799456,10cyclictest9-21ksoftirqd/007:25:000
2173799455,9cyclictest9-21ksoftirqd/011:55:230
2173799455,9cyclictest9-21ksoftirqd/011:10:310
2173799455,9cyclictest9-21ksoftirqd/008:30:250
2173799455,4cyclictest9-21ksoftirqd/007:52:270
21740994437,4cyclictest9471-21irqrtprio12:00:193
2173899449,26cyclictest1317-21runrttasks07:31:421
2173899441,31cyclictest17722-21sed07:45:231
2173899440,24cyclictest440-21chrt08:20:021
2173799443,7cyclictest9-21ksoftirqd/010:45:140
2173799443,6cyclictest9-21ksoftirqd/010:20:010
2173799443,6cyclictest9-21ksoftirqd/007:55:230
2173799443,5cyclictest9-21ksoftirqd/011:30:170
2173799442,5cyclictest0-21swapper/009:00:240
2173799441,7cyclictest9-21ksoftirqd/010:10:300
2173799440,7cyclictest9-21ksoftirqd/008:25:190
2173799440,6cyclictest9-21ksoftirqd/012:05:260
2173799440,5cyclictest9-21ksoftirqd/008:55:010
2173799440,5cyclictest0-21swapper/008:00:250
21740994332,7cyclictest41-21ksoftirqd/310:50:163
2173899431,30cyclictest5419-21df_inode10:45:141
2173899430,27cyclictest6183-21chrt09:39:441
2173899430,25cyclictest24086-21irqrtprio08:00:181
2173799431,4cyclictest9-21ksoftirqd/009:30:250
2173899421,30cyclictest17870-21chrt10:02:141
2173799425,9cyclictest9-21ksoftirqd/010:25:190
2173799425,9cyclictest9-21ksoftirqd/009:10:130
2173799425,9cyclictest9-21ksoftirqd/008:15:180
2173799424,8cyclictest0-21swapper/010:05:240
2173799424,7cyclictest9-21ksoftirqd/012:25:270
21737994238,2cyclictest111rcuc/010:55:050
21737994238,2cyclictest111rcuc/009:23:150
2173799422,6cyclictest9-21ksoftirqd/011:15:220
2173799420,6cyclictest9-21ksoftirqd/011:35:260
2173899411,29cyclictest7375-21taskset08:34:231
2173899411,25cyclictest23897-21chrt09:07:191
2173899410,3cyclictest25139-21seq10:18:341
2173899410,26cyclictest21480-21sshd11:17:421
2173899410,25cyclictest20243-21chrt10:06:361
139391410,0ptp4l401ktimersoftd/310:33:593
139391410,0ptp4l401ktimersoftd/308:15:213
2173899401,3cyclictest10253-21swap12:00:251
2173899400,29cyclictest12824-21diskstats08:45:141
21737994036,2cyclictest111rcuc/009:09:390
21737994036,2cyclictest111rcuc/008:41:500
2173799401,6cyclictest9-21ksoftirqd/012:36:440
2173899390,26cyclictest36602sleep111:48:001
2173899390,20cyclictest6721-21df11:55:151
21737993935,2cyclictest111rcuc/008:09:550
57898380,4rtkit-daemon5695-21df_inode08:30:142
21740993833,3cyclictest41-21ksoftirqd/307:10:193
2173899384,16cyclictest15463-21runrttasks09:56:591
21738993821,15cyclictest25-21ksoftirqd/109:17:011
21737993835,2cyclictest111rcuc/008:13:140
139391380,0ptp4l401ktimersoftd/311:25:153
21739993730,4cyclictest33-21ksoftirqd/211:25:112
2173899371,21cyclictest0-21swapper/109:50:101
2173899370,24cyclictest847-21runrttasks09:25:431
2173799374,4cyclictest9-21ksoftirqd/012:00:240
21737993733,2cyclictest111rcuc/012:10:250
21737993732,3cyclictest9-21ksoftirqd/009:25:200
21740993630,4cyclictest41-21ksoftirqd/311:58:423
21739993630,4cyclictest33-21ksoftirqd/210:51:462
21739993630,4cyclictest33-21ksoftirqd/207:41:552
21739993630,3cyclictest33-21ksoftirqd/208:27:582
21739993629,5cyclictest33-21ksoftirqd/212:18:112
21738993631,3cyclictest25-21ksoftirqd/108:35:131
21738993615,18cyclictest8450-21missed_timers10:50:241
2173899361,23cyclictest0-21swapper/109:47:011
57898350,2rtkit-daemon0-21swapper/208:35:282
21740993529,4cyclictest41-21ksoftirqd/308:20:403
21740993529,4cyclictest41-21ksoftirqd/307:27:073
21740993528,4cyclictest41-21ksoftirqd/310:20:243
21739993529,4cyclictest33-21ksoftirqd/211:05:062
21739993529,4cyclictest33-21ksoftirqd/210:32:322
21739993529,4cyclictest33-21ksoftirqd/209:59:152
21739993529,4cyclictest33-21ksoftirqd/208:11:112
21738993530,3cyclictest25-21ksoftirqd/107:58:591
21738993529,4cyclictest25-21ksoftirqd/110:42:341
21738993529,4cyclictest25-21ksoftirqd/108:16:571
21738993513,19cyclictest3923-21cat07:20:001
2173899351,24cyclictest26232-21chrt09:11:521
2173899351,20cyclictest21670-21apt-get11:20:021
2173899350,7cyclictest0-21swapper/111:30:211
2173799353,6cyclictest9-21ksoftirqd/008:55:170
21740993430,3cyclictest41-21ksoftirqd/309:40:183
21740993429,3cyclictest41-21ksoftirqd/311:18:313
21740993428,4cyclictest41-21ksoftirqd/309:16:323
21740993428,4cyclictest41-21ksoftirqd/308:48:593
21740993427,4cyclictest41-21ksoftirqd/311:47:583
21740993427,4cyclictest22883-21cron10:15:003
21739993429,3cyclictest33-21ksoftirqd/209:49:552
21739993429,3cyclictest33-21ksoftirqd/208:50:422
21739993428,4cyclictest33-21ksoftirqd/212:08:042
21739993428,4cyclictest33-21ksoftirqd/211:17:522
21739993428,4cyclictest33-21ksoftirqd/210:56:392
21739993428,4cyclictest33-21ksoftirqd/210:21:332
21739993428,4cyclictest33-21ksoftirqd/209:39:422
21739993428,4cyclictest33-21ksoftirqd/209:08:522
2173899341,21cyclictest0-21swapper/111:40:271
21740993328,3cyclictest41-21ksoftirqd/311:00:163
21740993328,3cyclictest41-21ksoftirqd/308:50:403
21740993328,3cyclictest41-21ksoftirqd/307:59:423
21740993327,4cyclictest41-21ksoftirqd/308:06:553
21739993328,3cyclictest33-21ksoftirqd/208:18:412
21739993327,4cyclictest33-21ksoftirqd/209:52:082
21739993327,4cyclictest33-21ksoftirqd/209:18:392
21739993327,4cyclictest33-21ksoftirqd/208:20:062
21739993326,5cyclictest33-21ksoftirqd/211:50:592
21738993328,3cyclictest25-21ksoftirqd/112:34:121
21738993328,3cyclictest25-21ksoftirqd/112:34:121
21738993327,4cyclictest25-21ksoftirqd/109:33:341
139391330,0ptp4l401ktimersoftd/307:39:163
21740993226,4cyclictest41-21ksoftirqd/312:08:173
21740993226,4cyclictest41-21ksoftirqd/311:23:523
21740993226,4cyclictest41-21ksoftirqd/307:48:183
21740993225,4cyclictest41-21ksoftirqd/309:00:583
21739993227,3cyclictest33-21ksoftirqd/208:44:462
21739993227,3cyclictest33-21ksoftirqd/207:52:092
21739993226,4cyclictest33-21ksoftirqd/211:41:562
21739993226,4cyclictest33-21ksoftirqd/207:48:262
21739993225,5cyclictest33-21ksoftirqd/212:14:582
21739993225,4cyclictest33-21ksoftirqd/212:23:042
21738993227,3cyclictest25-21ksoftirqd/107:55:001
21738993226,4cyclictest25-21ksoftirqd/112:09:031
139391320,0ptp4l401ktimersoftd/309:53:593
21740993127,3cyclictest41-21ksoftirqd/309:05:183
21740993126,3cyclictest41-21ksoftirqd/311:40:003
21740993126,3cyclictest41-21ksoftirqd/311:09:443
21740993126,3cyclictest41-21ksoftirqd/309:34:423
21740993126,3cyclictest41-21ksoftirqd/308:35:533
21740993126,3cyclictest41-21ksoftirqd/308:26:403
21740993126,3cyclictest41-21ksoftirqd/308:12:143
21740993125,4cyclictest41-21ksoftirqd/312:30:593
21740993125,4cyclictest41-21ksoftirqd/312:30:593
21740993125,4cyclictest41-21ksoftirqd/312:23:133
21740993125,4cyclictest41-21ksoftirqd/312:18:563
21740993125,4cyclictest41-21ksoftirqd/311:43:373
21740993125,4cyclictest41-21ksoftirqd/307:17:503
21740993124,4cyclictest41-21ksoftirqd/307:44:583
21739993126,3cyclictest33-21ksoftirqd/210:40:362
21739993126,3cyclictest33-21ksoftirqd/209:10:202
21739993125,4cyclictest33-21ksoftirqd/212:29:342
21739993125,4cyclictest33-21ksoftirqd/211:48:382
21739993125,4cyclictest33-21ksoftirqd/211:39:482
21739993125,4cyclictest33-21ksoftirqd/207:15:112
2173899318,20cyclictest5715-21grep11:50:291
21738993125,4cyclictest25-21ksoftirqd/108:26:321
21738993110,18cyclictest17421-21df_abs11:10:191
139391310,0ptp4l401ktimersoftd/307:50:543
139391310,0ptp4l401ktimersoftd/307:30:213
21740993026,3cyclictest41-21ksoftirqd/307:20:423
21740993025,3cyclictest41-21ksoftirqd/312:35:193
21740993025,3cyclictest41-21ksoftirqd/310:37:403
21740993025,3cyclictest41-21ksoftirqd/310:06:383
21740993024,4cyclictest41-21ksoftirqd/310:44:453
21740993024,4cyclictest41-21ksoftirqd/310:02:003
21740993024,4cyclictest41-21ksoftirqd/308:44:023
21739993025,3cyclictest33-21ksoftirqd/211:32:522
21739993025,3cyclictest33-21ksoftirqd/209:33:292
21739993025,3cyclictest33-21ksoftirqd/208:01:132
21739993025,3cyclictest33-21ksoftirqd/207:21:002
21739993024,4cyclictest33-21ksoftirqd/210:14:232
21739993024,4cyclictest33-21ksoftirqd/209:24:162
21739993024,4cyclictest33-21ksoftirqd/207:26:382
21738993025,3cyclictest25-21ksoftirqd/111:27:111
2173899301,26cyclictest30985-21/usr/sbin/munin11:35:271
139391300,0ptp4l401ktimersoftd/312:25:163
21740992924,3cyclictest41-21ksoftirqd/311:30:253
21740992924,3cyclictest41-21ksoftirqd/309:55:113
21740992924,3cyclictest41-21ksoftirqd/309:37:583
21740992923,4cyclictest41-21ksoftirqd/308:34:393
21740992923,3cyclictest41-21ksoftirqd/308:55:173
21739992924,3cyclictest33-21ksoftirqd/210:48:012
21739992924,3cyclictest33-21ksoftirqd/209:03:232
21739992924,3cyclictest33-21ksoftirqd/208:56:382
21739992923,4cyclictest33-21ksoftirqd/210:39:102
21739992923,4cyclictest33-21ksoftirqd/209:26:412
21739992923,4cyclictest33-21ksoftirqd/208:07:062
21739992923,3cyclictest33-21ksoftirqd/211:20:042
21740992823,3cyclictest41-21ksoftirqd/310:56:333
21740992823,3cyclictest41-21ksoftirqd/310:15:353
21740992822,4cyclictest41-21ksoftirqd/309:48:573
21740992817,9cyclictest41-21ksoftirqd/308:00:263
21739992823,3cyclictest33-21ksoftirqd/212:34:372
21739992823,3cyclictest33-21ksoftirqd/212:34:372
21739992823,3cyclictest33-21ksoftirqd/209:42:192
21739992823,3cyclictest33-21ksoftirqd/208:47:092
21739992823,3cyclictest33-21ksoftirqd/207:39:382
21739992822,4cyclictest33-21ksoftirqd/210:28:192
21739992822,4cyclictest33-21ksoftirqd/207:31:562
2173899280,25cyclictest10446-21ps10:55:181
139391280,0ptp4l401ktimersoftd/311:50:223
139391280,0ptp4l401ktimersoftd/310:49:553
21740992722,3cyclictest41-21ksoftirqd/309:25:493
21739992722,3cyclictest33-21ksoftirqd/212:38:052
21739992722,3cyclictest33-21ksoftirqd/210:02:482
21739992721,4cyclictest33-21ksoftirqd/210:06:092
21739992721,3cyclictest33-21ksoftirqd/212:03:472
21739992621,3cyclictest33-21ksoftirqd/211:01:322
21739992520,3cyclictest33-21ksoftirqd/207:58:432
139391250,0ptp4l401ktimersoftd/311:10:173
139391250,0ptp4l401ktimersoftd/310:25:213
139391240,1ptp4l401ktimersoftd/312:10:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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