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2026-06-06 - 15:12
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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 rackdslot1.osadl.org (updated Sat Jun 06, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1364721570,5sleep2500599cyclictest20:35:242
193721360,4sleep2500599cyclictest20:10:242
500499740,70cyclictest1114-21/usr/sbin/munin20:10:151
500499730,41cyclictest3140-21chrt23:42:281
500499730,2cyclictest4700-21ntpq23:45:211
500499700,30cyclictest31262-21date22:25:001
27792660,6sleep20-21swapper/219:05:132
500499652,27cyclictest0-21swapper/123:15:141
64242640,4sleep30-21swapper/323:50:183
500499640,24cyclictest23689-21latency_hist19:50:001
5003996431,5cyclictest9-21ksoftirqd/023:35:000
500499631,27cyclictest10756-21df22:50:131
500499631,21cyclictest2318-21gnome-shell21:50:251
5003996328,5cyclictest9-21ksoftirqd/019:15:000
281422630,4sleep00-21swapper/021:05:260
500499620,25cyclictest28904-21apt-get21:10:111
500499610,29cyclictest24539-21taskset00:28:121
500499610,28cyclictest7601-21seq23:50:461
5003996125,4cyclictest9-21ksoftirqd/000:28:580
500599608,7cyclictest0-21swapper/221:00:162
500499600,30cyclictest12262-21taskset21:42:431
134491600,5ptp4l15561-21iostat_ios21:50:170
500499591,29cyclictest28435-21seq23:25:511
500499591,29cyclictest16934-21seq20:44:561
500499591,29cyclictest16934-21seq20:44:561
500499590,30cyclictest22203-21taskset00:22:411
500499590,29cyclictest18636-21taskset19:37:111
134491590,4ptp4l0-21swapper/023:21:140
500599586,7cyclictest0-21swapper/219:15:232
500599586,7cyclictest0-21swapper/219:15:232
500499581,43cyclictest2318-21gnome-shell19:19:591
500499581,43cyclictest2318-21gnome-shell19:19:581
500499580,29cyclictest32709-21seq20:07:451
500499580,29cyclictest21631-21seq23:12:071
500499580,28cyclictest17194-21taskset23:04:071
500499580,28cyclictest14331-21seq20:36:581
500499580,23cyclictest137891phc2sys00:00:261
134491580,3ptp4l0-21swapper/122:25:241
134491580,3ptp4l0-21swapper/023:41:210
134491580,12ptp4l0-21swapper/321:45:133
500599575,7cyclictest0-21swapper/223:00:202
500499571,28cyclictest29215-21seq00:39:131
500499571,22cyclictest8665-21meminfo20:25:201
500499570,30cyclictest5481-21seq22:37:241
500499570,29cyclictest3223-21taskset21:24:571
500499570,29cyclictest28270-21seq19:59:591
500499570,29cyclictest25838-21seq19:53:131
500499570,29cyclictest16209-21seq19:31:111
5003995725,4cyclictest9-21ksoftirqd/021:03:140
134491570,4ptp4l0-21swapper/022:20:040
500499561,29cyclictest23671-21taskset22:05:511
500499561,27cyclictest19647-21seq00:17:221
500499560,30cyclictest26441-21seq23:24:391
500499560,29cyclictest26688-21seq00:31:191
5003995626,6cyclictest9-21ksoftirqd/020:50:270
5003995623,4cyclictest9-21ksoftirqd/023:51:260
5003995623,4cyclictest9-21ksoftirqd/021:42:280
5003995618,6cyclictest9-21ksoftirqd/019:40:190
134491560,4ptp4l0-21swapper/120:31:511
134491560,3ptp4l0-21swapper/223:40:242
134491560,3ptp4l0-21swapper/019:25:280
500599556,11cyclictest0-21swapper/220:20:132
500499553,28cyclictest15002-21seq00:06:471
500499550,29cyclictest4839-21seq20:16:111
500499550,29cyclictest19223-21seq23:05:461
500499550,28cyclictest23507-21taskset20:55:541
5003995525,4cyclictest9-21ksoftirqd/023:18:400
5003995524,5cyclictest9-21ksoftirqd/019:49:590
5003995524,3cyclictest9-21ksoftirqd/021:19:180
5003995522,6cyclictest9-21ksoftirqd/000:20:170
5003995522,3cyclictest9-21ksoftirqd/021:00:010
5003995519,6cyclictest9-21ksoftirqd/020:10:010
5003995519,4cyclictest9-21ksoftirqd/022:10:000
500599545,6cyclictest0-21swapper/221:25:132
500499540,30cyclictest26002-21seq21:00:321
500499540,28cyclictest28661-21taskset22:18:061
5003995425,5cyclictest9-21ksoftirqd/021:30:280
5003995424,6cyclictest9-21ksoftirqd/019:50:190
5003995424,5cyclictest9-21ksoftirqd/019:30:190
5003995424,4cyclictest9-21ksoftirqd/021:37:320
5003995424,4cyclictest9-21ksoftirqd/000:35:270
5003995423,4cyclictest9-21ksoftirqd/023:29:400
5003995422,4cyclictest9-21ksoftirqd/019:20:130
5003995421,6cyclictest9-21ksoftirqd/022:00:250
5003995421,6cyclictest9-21ksoftirqd/020:00:000
5003995419,6cyclictest9-21ksoftirqd/023:55:150
500599535,11cyclictest0-21swapper/219:36:452
500499530,3cyclictest134491ptp4l19:10:291
500499530,27cyclictest14131-21taskset19:29:011
5003995325,3cyclictest9-21ksoftirqd/023:06:210
5003995324,5cyclictest9-21ksoftirqd/022:40:280
5003995324,4cyclictest9-21ksoftirqd/023:04:000
5003995323,4cyclictest9-21ksoftirqd/000:05:230
5003995321,6cyclictest9-21ksoftirqd/022:50:140
5003995320,6cyclictest9-21ksoftirqd/019:15:180
5003995320,6cyclictest9-21ksoftirqd/019:15:180
5003995320,5cyclictest9-21ksoftirqd/022:55:180
5003995319,10cyclictest9-21ksoftirqd/000:20:010
134491530,4ptp4l0-21swapper/300:33:303
134491530,4ptp4l0-21swapper/019:36:410
500599524,12cyclictest0-21swapper/223:30:182
500599523,8cyclictest21099-21tail20:50:272
500599520,6cyclictest17337-21cat21:55:102
500499520,27cyclictest7359-21runrttasks20:23:421
5003995223,5cyclictest9-21ksoftirqd/023:10:120
5003995222,5cyclictest9-21ksoftirqd/021:55:230
5003995221,5cyclictest9-21ksoftirqd/022:15:190
5003995221,3cyclictest9-21ksoftirqd/021:20:290
5003995220,6cyclictest9-21ksoftirqd/000:15:000
5003995220,5cyclictest9-21ksoftirqd/020:25:130
5003995220,4cyclictest9-21ksoftirqd/022:30:260
5003995219,5cyclictest9-21ksoftirqd/000:00:120
5003995219,3cyclictest9-21ksoftirqd/020:00:140
5003995218,6cyclictest9-21ksoftirqd/021:10:130
5003995217,6cyclictest9-21ksoftirqd/023:35:140
134491520,4ptp4l0-21swapper/023:49:290
500599517,7cyclictest0-21swapper/222:30:122
500599516,6cyclictest0-21swapper/223:47:152
500599515,7cyclictest0-21swapper/222:38:232
500599515,11cyclictest0-21swapper/222:45:282
500599514,7cyclictest0-21swapper/221:45:232
500499510,28cyclictest11565-21seq19:20:321
5003995121,6cyclictest9-21ksoftirqd/022:25:180
5003995121,4cyclictest9-21ksoftirqd/022:50:010
5003995120,5cyclictest9-21ksoftirqd/022:10:180
5003995120,5cyclictest9-21ksoftirqd/020:37:280
5003995120,5cyclictest9-21ksoftirqd/000:30:130
5003995120,4cyclictest9-21ksoftirqd/022:35:190
134491510,4ptp4l0-21swapper/020:42:190
134491510,4ptp4l0-21swapper/020:42:190
500599506,6cyclictest0-21swapper/222:50:262
500599503,7cyclictest18217-21cut00:15:162
500599502,6cyclictest0-21swapper/200:10:232
5003995020,3cyclictest9-21ksoftirqd/020:30:150
5003995019,3cyclictest9-21ksoftirqd/020:45:260
5003995016,5cyclictest9-21ksoftirqd/020:15:180
147522500,1sleep114754-21apt21:50:001
500599497,6cyclictest0-21swapper/221:40:162
500599496,6cyclictest0-21swapper/221:33:082
500599495,7cyclictest0-21swapper/223:14:562
500599495,6cyclictest0-21swapper/221:05:132
500499491,24cyclictest10100-21taskset21:39:431
500499490,28cyclictest17401-21seq00:13:041
5003994923,8cyclictest9-21ksoftirqd/020:20:270
134491490,4ptp4l0-21swapper/321:01:173
134491490,4ptp4l0-21swapper/021:47:520
500599486,5cyclictest0-21swapper/221:23:292
500599486,5cyclictest0-21swapper/219:58:042
500599485,6cyclictest0-21swapper/220:25:202
500599485,6cyclictest0-21swapper/219:45:222
500599483,10cyclictest21784-21apt-get20:55:122
500599482,7cyclictest0-21swapper/223:25:232
500599482,4cyclictest0-21swapper/221:10:162
500499480,28cyclictest5236-21taskset21:26:161
5003994814,5cyclictest9-21ksoftirqd/020:10:250
134491480,4ptp4l0-21swapper/323:01:283
134491480,4ptp4l0-21swapper/322:09:383
500599476,5cyclictest0-21swapper/221:50:562
500599476,5cyclictest0-21swapper/219:13:552
500599472,6cyclictest0-21swapper/222:05:142
500599472,6cyclictest0-21swapper/220:30:192
500599472,6cyclictest0-21swapper/200:25:242
500499470,26cyclictest19314-21seq21:59:061
5003994718,6cyclictest9-21ksoftirqd/021:25:160
500599464,7cyclictest0-21swapper/219:43:432
500499460,25cyclictest788-21taskset21:19:371
500599452,6cyclictest0-21swapper/221:35:162
500599452,4cyclictest0-21swapper/223:20:272
134491450,5ptp4l0-21swapper/019:08:480
134491450,3ptp4l0-21swapper/322:30:273
134491450,3ptp4l0-21swapper/320:41:123
134491450,3ptp4l0-21swapper/320:41:123
134491450,11ptp4l7424-21wc22:40:272
500599442,6cyclictest0-21swapper/219:34:132
500599442,5cyclictest0-21swapper/222:24:552
500499440,30cyclictest26351-21seq22:12:581
500599434,6cyclictest33-21ksoftirqd/223:20:002
500599432,6cyclictest0-21swapper/220:00:372
500499430,28cyclictest31007-21taskset23:34:181
500499430,28cyclictest21456-21taskset20:54:041
500499430,27cyclictest3375-21seq22:34:561
134491430,5ptp4l14686-21users00:05:272
500599422,6cyclictest0-21swapper/222:15:172
500599422,5cyclictest33-21ksoftirqd/221:15:232
500499421,37cyclictest8497-21diskstats23:55:151
500499420,28cyclictest28406-21chrt21:06:471
134491420,4ptp4l31315-21apt-get23:35:101
500599415,6cyclictest0-21swapper/200:34:202
500599413,4cyclictest0-21swapper/222:03:532
500599412,6cyclictest321ktimersoftd/200:35:152
500599411,4cyclictest0-21swapper/219:50:142
134491410,4ptp4l0-21swapper/319:51:223
134491410,4ptp4l0-21swapper/119:05:231
5005994037,2cyclictest33-21ksoftirqd/200:05:002
500499401,36cyclictest19866-21df22:00:131
500499400,27cyclictest10107-21seq22:47:351
134491400,9ptp4l0-21swapper/122:44:211
134491400,5ptp4l0-21swapper/120:00:131
134491400,4ptp4l17815-21apt-get00:15:123
134491400,4ptp4l0-21swapper/323:20:483
5005993936,2cyclictest311rcuc/220:40:232
5005993936,2cyclictest311rcuc/220:40:222
500499390,26cyclictest5764-21runrttasks21:30:101
134491390,5ptp4l0-21swapper/322:46:543
134491390,4ptp4l0-21swapper/323:40:223
134491390,4ptp4l0-21swapper/323:15:213
134491390,4ptp4l0-21swapper/323:05:183
134491390,4ptp4l0-21swapper/319:33:273
134491390,4ptp4l0-21swapper/223:05:132
134491390,4ptp4l0-21swapper/122:57:191
134491390,3ptp4l13955-21ntp_states22:55:223
5006993833,3cyclictest41-21ksoftirqd/323:25:183
5006993832,3cyclictest41-21ksoftirqd/319:25:143
500599382,8cyclictest0-21swapper/223:55:192
134491380,5ptp4l0-21swapper/320:55:353
134491380,4ptp4l0-21swapper/323:36:363
134491380,4ptp4l0-21swapper/323:30:213
134491380,4ptp4l0-21swapper/322:12:113
134491380,4ptp4l0-21swapper/321:20:243
134491380,4ptp4l0-21swapper/321:19:583
134491380,4ptp4l0-21swapper/320:30:263
134491380,4ptp4l0-21swapper/320:00:573
134491380,4ptp4l0-21swapper/319:46:463
134491380,4ptp4l0-21swapper/319:20:123
134491380,4ptp4l0-21swapper/222:57:162
134491380,4ptp4l0-21swapper/222:13:252
134491380,4ptp4l0-21swapper/219:25:442
134491380,4ptp4l0-21swapper/120:45:131
134491380,4ptp4l0-21swapper/119:40:191
134491380,3ptp4l3360-21df_abs20:15:142
134491380,3ptp4l10266-21apt-get00:00:043
134491380,3ptp4l0-21swapper/223:51:102
134491380,3ptp4l0-21swapper/220:08:442
5006993731,4cyclictest41-21ksoftirqd/319:10:143
500599372,34cyclictest0-21swapper/223:35:102
134491370,5ptp4l0-21swapper/320:39:593
134491370,4ptp4l0-21swapper/323:56:583
134491370,4ptp4l0-21swapper/323:11:343
134491370,4ptp4l0-21swapper/322:50:273
134491370,4ptp4l0-21swapper/322:40:023
134491370,4ptp4l0-21swapper/322:37:143
134491370,4ptp4l0-21swapper/322:25:123
134491370,4ptp4l0-21swapper/321:56:413
134491370,4ptp4l0-21swapper/321:50:333
134491370,4ptp4l0-21swapper/321:44:453
134491370,4ptp4l0-21swapper/321:37:243
134491370,4ptp4l0-21swapper/321:26:083
134491370,4ptp4l0-21swapper/321:05:083
134491370,4ptp4l0-21swapper/320:50:253
134491370,4ptp4l0-21swapper/320:26:513
134491370,4ptp4l0-21swapper/320:21:373
134491370,4ptp4l0-21swapper/319:35:193
134491370,4ptp4l0-21swapper/319:17:383
134491370,4ptp4l0-21swapper/319:17:373
134491370,4ptp4l0-21swapper/300:08:183
134491370,4ptp4l0-21swapper/220:45:062
134491370,4ptp4l0-21swapper/219:20:272
134491370,4ptp4l0-21swapper/200:20:352
134491370,3ptp4l0-21swapper/320:46:013
134491370,3ptp4l0-21swapper/222:28:052
5006993631,3cyclictest41-21ksoftirqd/321:10:173
5006993630,3cyclictest41-21ksoftirqd/300:10:173
134491360,4ptp4l0-21swapper/322:02:143
134491360,4ptp4l0-21swapper/320:09:313
134491360,3ptp4l2476-21awk20:10:283
134491360,3ptp4l0-21swapper/322:16:373
134491360,3ptp4l0-21swapper/300:21:343
134491350,4ptp4l500699cyclictest23:49:103
134491350,4ptp4l0-21swapper/322:24:163
134491350,3ptp4l0-21swapper/319:43:433
134491350,3ptp4l0-21swapper/300:25:273
134491340,4ptp4l0-21swapper/321:34:553
134491340,4ptp4l0-21swapper/319:56:393
134491330,3ptp4l0-21swapper/300:36:363
5006992419,3cyclictest41-21ksoftirqd/320:20:003
32372111,4sleep33521-21irqstats19:05:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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