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2025-12-28 - 20:47
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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 Sun Dec 28, 2025 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1216521460,5sleep22760399cyclictest07:45:142
812621410,6sleep12760299cyclictest12:15:001
27601996531,3cyclictest9-21ksoftirqd/010:08:270
27601996432,4cyclictest9-21ksoftirqd/011:15:280
27601996431,6cyclictest9-21ksoftirqd/008:05:170
27601996334,6cyclictest9-21ksoftirqd/009:35:150
27601996333,7cyclictest9-21ksoftirqd/007:20:390
134491620,5ptp4l0-21swapper/108:00:201
2760399617,6cyclictest0-21swapper/211:35:262
2760399617,6cyclictest0-21swapper/211:35:262
27601996128,6cyclictest9-21ksoftirqd/011:25:280
2760399606,6cyclictest30028-21apt-config07:15:002
27601996031,4cyclictest9-21ksoftirqd/010:04:340
27601996030,4cyclictest9-21ksoftirqd/009:50:150
27601996029,6cyclictest9-21ksoftirqd/007:49:260
27601996029,5cyclictest9-21ksoftirqd/009:00:000
27601996028,6cyclictest9-21ksoftirqd/010:18:260
27601996027,5cyclictest9-21ksoftirqd/009:20:140
27601996024,6cyclictest9-21ksoftirqd/009:55:280
27601996023,6cyclictest9-21ksoftirqd/012:10:260
27601996022,10cyclictest9-21ksoftirqd/009:15:000
134491600,3ptp4l12984-21ls08:55:181
2760399595,52cyclictest0-21swapper/210:20:292
27601995931,9cyclictest9-21ksoftirqd/008:10:150
27601995930,8cyclictest9-21ksoftirqd/008:45:190
27601995930,3cyclictest9-21ksoftirqd/010:20:190
27601995929,6cyclictest9-21ksoftirqd/010:45:280
27601995925,6cyclictest9-21ksoftirqd/010:25:230
27601995922,5cyclictest9-21ksoftirqd/009:30:230
27601995921,5cyclictest9-21ksoftirqd/009:00:170
134491590,4ptp4l0-21swapper/212:06:252
2760399588,6cyclictest0-21swapper/210:05:222
2760399585,7cyclictest13153-21grep12:25:162
2760399584,6cyclictest4570-21awk07:30:002
2760399580,17cyclictest2318-21gnome-shell08:50:242
27601995830,4cyclictest9-21ksoftirqd/010:10:180
27601995829,7cyclictest9-21ksoftirqd/010:35:160
27601995829,7cyclictest9-21ksoftirqd/010:35:160
27601995827,5cyclictest9-21ksoftirqd/011:10:000
27601995827,5cyclictest9-21ksoftirqd/011:10:000
27601995826,3cyclictest9-21ksoftirqd/008:25:000
27601995821,6cyclictest9-21ksoftirqd/008:50:170
2760399578,12cyclictest0-21swapper/207:30:272
2760399578,10cyclictest0-21swapper/211:30:162
27601995729,5cyclictest9-21ksoftirqd/012:00:170
27601995728,6cyclictest9-21ksoftirqd/011:40:170
27601995726,4cyclictest9-21ksoftirqd/008:28:180
27601995726,3cyclictest9-21ksoftirqd/009:05:190
27601995724,6cyclictest9-21ksoftirqd/009:15:140
134491570,5ptp4l0-21swapper/011:55:160
134491570,3ptp4l0-21swapper/208:39:262
134491570,3ptp4l0-21swapper/111:18:351
2760399568,5cyclictest0-21swapper/209:25:262
27601995629,3cyclictest9-21ksoftirqd/010:40:560
27601995628,7cyclictest9-21ksoftirqd/008:30:200
27601995628,6cyclictest9-21ksoftirqd/012:25:210
27601995627,4cyclictest9-21ksoftirqd/007:32:250
27601995626,6cyclictest9-21ksoftirqd/007:15:140
27601995624,7cyclictest9-21ksoftirqd/008:00:230
27601995624,3cyclictest9-21ksoftirqd/012:21:180
27601995624,3cyclictest9-21ksoftirqd/011:25:000
27601995622,3cyclictest9-21ksoftirqd/008:36:070
27601995618,6cyclictest9-21ksoftirqd/008:15:180
27601995618,6cyclictest9-21ksoftirqd/008:15:180
134491560,5ptp4l0-21swapper/112:00:231
134491560,4ptp4l0-21swapper/007:25:140
2760399558,6cyclictest0-21swapper/210:10:202
2760399557,7cyclictest0-21swapper/212:15:192
2760399557,7cyclictest0-21swapper/207:15:232
2760399557,6cyclictest0-21swapper/212:10:262
2760399557,6cyclictest0-21swapper/209:00:192
2760399557,12cyclictest0-21swapper/209:30:262
27601995527,6cyclictest9-21ksoftirqd/012:35:200
27601995526,6cyclictest9-21ksoftirqd/010:30:280
27601995521,5cyclictest9-21ksoftirqd/008:40:200
27601995519,5cyclictest9-21ksoftirqd/009:40:270
2760399548,10cyclictest0-21swapper/210:25:162
2760399547,6cyclictest0-21swapper/209:59:242
2760399547,6cyclictest0-21swapper/207:55:232
2760399540,18cyclictest12049-21chrt08:55:112
134491540,3ptp4l0-21swapper/211:15:242
134491540,3ptp4l0-21swapper/109:34:181
134491540,3ptp4l0-21swapper/109:25:271
2760399537,6cyclictest0-21swapper/210:45:252
2760399537,6cyclictest0-21swapper/209:15:232
2760399537,12cyclictest0-21swapper/212:00:282
2760399536,11cyclictest0-21swapper/209:45:222
2760399531,6cyclictest8393-21cstates11:05:162
2760399531,6cyclictest8393-21cstates11:05:162
27601995328,7cyclictest9-21ksoftirqd/009:45:130
27601995318,5cyclictest9-21ksoftirqd/012:05:210
134491530,4ptp4l0-21swapper/207:09:352
134491530,4ptp4l0-21swapper/111:44:071
134491530,4ptp4l0-21swapper/011:00:160
134491530,3ptp4l0-21swapper/110:40:171
2760399527,6cyclictest0-21swapper/209:54:552
2760399522,6cyclictest0-21swapper/207:22:072
2760399520,11cyclictest24669-21cpuspeed_turbos11:40:132
27601995226,6cyclictest9-21ksoftirqd/010:50:270
27601995224,6cyclictest9-21ksoftirqd/010:55:130
27601995223,6cyclictest9-21ksoftirqd/011:30:190
27601995220,3cyclictest9-21ksoftirqd/007:10:210
134491520,3ptp4l0-21swapper/307:36:053
2760399516,6cyclictest0-21swapper/208:00:302
2760399514,9cyclictest1991-21ntp_states09:40:232
2760399512,6cyclictest7402-21cpuspeed_turbos07:35:152
27601995124,7cyclictest9-21ksoftirqd/007:55:000
27601995119,6cyclictest9-21ksoftirqd/012:15:190
27601995117,3cyclictest9-21ksoftirqd/009:25:000
134491510,4ptp4l0-21swapper/107:38:521
2760399503,6cyclictest33-21ksoftirqd/209:20:202
27603995021,9cyclictest33-21ksoftirqd/207:50:132
2760399500,14cyclictest31165-21df09:35:152
27601995020,5cyclictest9-21ksoftirqd/011:10:260
134491500,5ptp4l0-21swapper/107:07:231
2760399495,7cyclictest0-21swapper/208:15:132
2760399495,7cyclictest0-21swapper/208:15:132
2760399491,6cyclictest33-21ksoftirqd/211:50:122
134491490,4ptp4l0-21swapper/311:41:433
134491490,3ptp4l0-21swapper/110:38:091
134491490,3ptp4l0-21swapper/110:38:091
2760399487,6cyclictest0-21swapper/210:15:142
2760399480,11cyclictest29391-21/usr/sbin/munin10:40:192
27601994823,6cyclictest9-21ksoftirqd/011:35:530
27601994823,6cyclictest9-21ksoftirqd/011:35:530
27601994819,9cyclictest9-21ksoftirqd/011:45:130
2760499470,2cyclictest121rcu_preempt08:40:103
2760399478,6cyclictest0-21swapper/210:55:222
2760399470,6cyclictest10861-21if_enp4s010:00:192
2760199476,2cyclictest9-21ksoftirqd/007:40:230
2760199475,2cyclictest9-21ksoftirqd/012:30:170
27601994737,3cyclictest9-21ksoftirqd/007:35:300
2760199472,6cyclictest9-21ksoftirqd/007:56:080
152182470,3sleep115223-21irqrtprio09:00:191
134491470,4ptp4l0-21swapper/312:17:373
134491470,3ptp4l0-21swapper/309:46:213
134491470,13ptp4l0-21swapper/211:55:292
2760399467,6cyclictest0-21swapper/209:10:212
2760399466,6cyclictest0-21swapper/211:25:272
2760399461,7cyclictest321ktimersoftd/208:10:272
2760399460,6cyclictest28033-21sed10:35:302
2760399460,6cyclictest28033-21sed10:35:302
134491460,4ptp4l0-21swapper/307:20:093
134491460,3ptp4l0-21swapper/110:22:511
2760399457,6cyclictest0-21swapper/208:25:202
2760399456,6cyclictest0-21swapper/212:35:252
2760399455,6cyclictest0-21swapper/208:45:142
2760399450,6cyclictest33-21ksoftirqd/211:00:202
2760199453,1cyclictest0-21swapper/011:50:180
134491450,9ptp4l0-21swapper/208:34:042
134491450,4ptp4l0-21swapper/211:48:032
134491450,3ptp4l0-21swapper/310:23:193
2760399449,33cyclictest0-21swapper/210:50:292
2760399447,5cyclictest0-21swapper/212:24:302
2760399446,6cyclictest0-21swapper/208:22:052
2760399442,5cyclictest0-21swapper/212:30:262
134491440,9ptp4l0-21swapper/210:34:352
134491440,4ptp4l0-21swapper/307:52:403
134491440,4ptp4l0-21swapper/110:15:091
134491440,3ptp4l0-21swapper/312:25:523
134491440,3ptp4l0-21swapper/107:55:021
134491440,10ptp4l0-21swapper/311:46:173
134491440,10ptp4l0-21swapper/208:40:182
27604994338,3cyclictest41-21ksoftirqd/309:20:003
134491430,4ptp4l8874-21irqstats09:55:191
134491430,4ptp4l0-21swapper/109:15:091
134491430,3ptp4l0-21swapper/110:31:191
134491430,3ptp4l0-21swapper/108:35:251
134491430,3ptp4l0-21swapper/107:44:151
27604994235,4cyclictest41-21ksoftirqd/312:05:003
134491420,5ptp4l0-21swapper/311:15:133
134491420,4ptp4l5734-21apt-get09:50:123
134491420,4ptp4l3998-21iostat09:45:161
134491420,4ptp4l30871-21apt-get10:45:031
134491420,4ptp4l27178-21apt-get07:10:031
134491420,4ptp4l26872-21apt-get11:45:101
134491420,4ptp4l17869-21diskstats12:35:181
134491420,4ptp4l0-21swapper/111:21:161
134491420,3ptp4l15317-21apt-get11:20:112
134491420,3ptp4l0-21swapper/308:34:573
134491420,3ptp4l0-21swapper/109:41:161
134491420,3ptp4l0-21swapper/108:25:551
27604994137,2cyclictest41-21ksoftirqd/311:24:593
27604994135,3cyclictest41-21ksoftirqd/310:35:003
2760399412,5cyclictest0-21swapper/211:11:352
134491410,9ptp4l0-21swapper/311:28:173
134491410,5ptp4l20887-21apt-get08:05:032
134491410,5ptp4l13594-21meminfo10:05:201
134491410,5ptp4l10790-21df_inode11:10:161
134491410,5ptp4l0-21swapper/311:35:223
134491410,5ptp4l0-21swapper/311:35:223
134491410,5ptp4l0-21swapper/112:25:261
134491410,4ptp4l32595-21ntp_states11:55:231
134491410,4ptp4l2079-21irqstats10:50:203
134491410,4ptp4l0-21swapper/311:30:253
134491410,4ptp4l0-21swapper/310:45:243
134491410,4ptp4l0-21swapper/309:07:043
134491410,3ptp4l9604-21apt-get07:40:112
134491410,3ptp4l28871-21iostat_ios08:20:191
134491410,3ptp4l16002-21ls09:00:293
134491410,3ptp4l0-21swapper/111:06:091
134491410,3ptp4l0-21swapper/111:06:091
27604994035,3cyclictest41-21ksoftirqd/311:05:003
27604994035,3cyclictest41-21ksoftirqd/308:30:003
27604994035,3cyclictest41-21ksoftirqd/308:05:003
134491400,5ptp4l0-21swapper/107:15:171
134491400,4ptp4l6829-21sed11:00:211
134491400,4ptp4l4331-21sed12:05:193
134491400,4ptp4l21842-21/usr/sbin/munin10:25:091
134491400,4ptp4l0-21swapper/312:30:163
134491400,4ptp4l0-21swapper/311:11:153
134491400,4ptp4l0-21swapper/309:10:113
134491400,4ptp4l0-21swapper/308:50:213
134491400,4ptp4l0-21swapper/308:35:133
134491400,4ptp4l0-21swapper/308:20:553
134491400,4ptp4l0-21swapper/112:24:541
134491400,4ptp4l0-21swapper/111:26:571
134491400,4ptp4l0-21swapper/109:10:231
134491400,3ptp4l8572-21ntp_states08:45:243
134491400,3ptp4l5209-21hddtemp_smartct07:30:161
134491400,3ptp4l4691-21ntp_states10:55:221
134491400,3ptp4l23675-21apt-get08:10:121
134491400,3ptp4l15789-21irqstats10:10:211
134491400,3ptp4l14197-21apt-get07:50:121
134491400,3ptp4l12468-21iostat07:45:181
134491400,3ptp4l0-21swapper/110:54:391
2760499397,3cyclictest121rcu_preempt07:57:423
27604993934,3cyclictest41-21ksoftirqd/312:35:173
27604993934,3cyclictest41-21ksoftirqd/310:40:003
27604993934,3cyclictest41-21ksoftirqd/310:40:003
27604993928,9cyclictest41-21ksoftirqd/309:40:283
27604993927,10cyclictest41-21ksoftirqd/312:20:193
27604993927,10cyclictest41-21ksoftirqd/307:10:253
134491390,5ptp4l0-21swapper/007:05:140
134491390,4ptp4l6769-21grep09:50:211
134491390,4ptp4l0-21swapper/312:14:103
134491390,4ptp4l0-21swapper/311:55:153
134491390,4ptp4l0-21swapper/311:50:133
134491390,4ptp4l0-21swapper/310:29:353
134491390,4ptp4l0-21swapper/308:59:133
134491390,4ptp4l0-21swapper/307:29:093
134491390,4ptp4l0-21swapper/209:05:312
134491390,4ptp4l0-21swapper/112:30:191
134491390,4ptp4l0-21swapper/112:15:271
134491390,4ptp4l0-21swapper/111:36:371
134491390,4ptp4l0-21swapper/111:36:371
134491390,4ptp4l0-21swapper/110:00:251
134491390,3ptp4l4790-21strings12:05:221
134491390,3ptp4l0-21swapper/309:20:133
134491390,3ptp4l0-21swapper/107:20:471
27604993833,3cyclictest41-21ksoftirqd/311:00:003
27604993833,3cyclictest41-21ksoftirqd/309:25:243
27604993833,3cyclictest41-21ksoftirqd/308:10:263
27604993833,2cyclictest41-21ksoftirqd/310:15:193
27604993832,3cyclictest41-21ksoftirqd/309:35:173
27604993831,4cyclictest41-21ksoftirqd/310:40:193
27604993828,9cyclictest41-21ksoftirqd/308:15:283
27604993828,9cyclictest41-21ksoftirqd/308:15:283
27602993832,3cyclictest25-21ksoftirqd/107:30:001
134491380,5ptp4l30212-21taskset07:15:133
134491380,4ptp4l7548-21cpuspeed_turbos08:45:131
134491380,4ptp4l16883-21cpu09:05:141
134491380,4ptp4l0-21swapper/311:07:113
134491380,4ptp4l0-21swapper/311:07:113
134491380,4ptp4l0-21swapper/310:10:173
134491380,4ptp4l0-21swapper/309:58:113
134491380,4ptp4l0-21swapper/309:30:353
134491380,4ptp4l0-21swapper/307:46:163
134491380,4ptp4l0-21swapper/307:40:123
134491380,4ptp4l0-21swapper/307:31:523
134491380,4ptp4l0-21swapper/111:50:271
134491380,4ptp4l0-21swapper/111:32:271
134491380,3ptp4l5731-21iostat_ios08:40:171
134491380,3ptp4l31517-21iostat09:35:191
134491380,3ptp4l24105-21df_abs09:20:151
134491370,4ptp4l0-21swapper/310:08:073
134491370,4ptp4l0-21swapper/310:01:293
134491370,3ptp4l0-21swapper/108:31:151
134491370,3ptp4l0-21swapper/108:20:001
134491370,3ptp4l0-21swapper/108:20:001
134491370,3ptp4l0-21swapper/108:05:161
134491360,3ptp4l0-21swapper/308:07:163
134491340,5ptp4l0-21swapper/307:09:483
134491340,4ptp4l0-21swapper/108:52:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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