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2026-09-21 - 00:16
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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 Sun Sep 20, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32354997136,9cyclictest25-21ksoftirqd/110:35:001
134491660,5ptp4l41-21ksoftirqd/311:56:483
32354996534,8cyclictest25-21ksoftirqd/110:10:001
32354996432,4cyclictest25-21ksoftirqd/111:25:271
134491640,3ptp4l22461-21memory11:25:210
65902630,5sleep20-21swapper/210:50:252
32354996323,8cyclictest25-21ksoftirqd/110:15:261
134491630,11ptp4l31139-21ntp_states07:05:261
32354996227,7cyclictest25-21ksoftirqd/110:40:141
134491620,29ptp4l25-21ksoftirqd/112:07:071
32354996131,7cyclictest25-21ksoftirqd/111:00:191
134491610,4ptp4l0-21swapper/109:00:211
32354996035,6cyclictest25-21ksoftirqd/107:10:141
32354996031,8cyclictest25-21ksoftirqd/112:30:171
32354996031,8cyclictest25-21ksoftirqd/110:50:191
32354996031,3cyclictest25-21ksoftirqd/107:15:171
32354996031,3cyclictest25-21ksoftirqd/107:15:161
32354996030,4cyclictest25-21ksoftirqd/110:56:171
32354996027,4cyclictest25-21ksoftirqd/110:50:011
32354996026,10cyclictest25-21ksoftirqd/111:55:221
32354995931,7cyclictest25-21ksoftirqd/110:10:171
32354995931,7cyclictest25-21ksoftirqd/110:10:171
32354995831,3cyclictest25-21ksoftirqd/107:54:431
32354995829,6cyclictest25-21ksoftirqd/111:35:241
32354995828,7cyclictest25-21ksoftirqd/110:40:001
32354995828,4cyclictest25-21ksoftirqd/108:55:171
32354995826,4cyclictest25-21ksoftirqd/111:45:241
134491580,4ptp4l0-21swapper/211:37:032
134491580,3ptp4l0-21swapper/309:50:123
134491580,3ptp4l0-21swapper/307:26:493
32354995731,7cyclictest25-21ksoftirqd/111:06:361
32354995729,9cyclictest25-21ksoftirqd/107:38:021
32354995723,7cyclictest25-21ksoftirqd/109:15:211
134491570,4ptp4l0-21swapper/208:07:102
134491570,3ptp4l14433-21iostat_ios07:40:172
134491570,3ptp4l0-21swapper/311:48:053
32354995631,6cyclictest25-21ksoftirqd/109:30:191
32354995630,3cyclictest25-21ksoftirqd/111:40:181
32354995629,6cyclictest25-21ksoftirqd/112:10:171
32354995624,3cyclictest25-21ksoftirqd/108:20:201
32354995621,8cyclictest25-21ksoftirqd/109:25:311
32354995621,4cyclictest25-21ksoftirqd/107:40:181
32354995523,4cyclictest25-21ksoftirqd/110:00:011
32354995521,7cyclictest25-21ksoftirqd/112:25:011
134491550,4ptp4l0-21swapper/010:25:200
134491550,3ptp4l0-21swapper/311:14:543
134491550,3ptp4l0-21swapper/012:20:270
32354995428,7cyclictest25-21ksoftirqd/111:50:161
32354995428,7cyclictest25-21ksoftirqd/111:35:001
32354995428,6cyclictest25-21ksoftirqd/109:20:181
134491540,4ptp4l0-21swapper/211:25:242
134491540,4ptp4l0-21swapper/209:53:092
134491540,4ptp4l0-21swapper/208:55:252
134491540,4ptp4l0-21swapper/111:23:541
134491540,3ptp4l0-21swapper/112:00:151
3235499537,8cyclictest25-21ksoftirqd/109:15:001
32354995327,6cyclictest25-21ksoftirqd/108:10:001
32354995326,6cyclictest25-21ksoftirqd/112:35:161
32354995325,6cyclictest25-21ksoftirqd/108:51:261
32354995322,6cyclictest25-21ksoftirqd/107:25:141
134491530,4ptp4l0-21swapper/210:40:042
134491530,4ptp4l0-21swapper/209:23:582
134491530,4ptp4l0-21swapper/010:44:570
32354995227,4cyclictest25-21ksoftirqd/108:35:141
32354995222,3cyclictest25-21ksoftirqd/107:45:141
32354995219,7cyclictest25-21ksoftirqd/109:40:151
32354995219,7cyclictest25-21ksoftirqd/109:40:151
32354995217,7cyclictest25-21ksoftirqd/109:50:011
134491520,3ptp4l0-21swapper/009:04:120
134491510,4ptp4l0-21swapper/210:58:492
134491510,4ptp4l0-21swapper/011:36:390
134491510,4ptp4l0-21swapper/011:00:380
134491510,4ptp4l0-21swapper/010:22:500
134491510,4ptp4l0-21swapper/009:34:160
134491510,3ptp4l0-21swapper/212:22:552
134491510,3ptp4l0-21swapper/110:04:251
134491510,3ptp4l0-21swapper/010:14:160
134491510,3ptp4l0-21swapper/010:14:160
134491510,3ptp4l0-21swapper/008:25:200
134491510,16ptp4l31675-21grep07:05:310
134491510,11ptp4l0-21swapper/011:21:240
134491510,11ptp4l0-21swapper/008:45:220
3235499505,3cyclictest25-21ksoftirqd/107:55:141
32354995024,4cyclictest25-21ksoftirqd/108:47:361
32354995019,4cyclictest25-21ksoftirqd/109:35:211
32354995014,4cyclictest25-21ksoftirqd/108:40:291
134491500,3ptp4l0-21swapper/207:33:202
3235499496,3cyclictest25-21ksoftirqd/110:25:011
3235499494,2cyclictest25-21ksoftirqd/107:30:281
3235499490,9cyclictest18971-21grep11:20:001
134491490,4ptp4l0-21swapper/207:19:382
134491490,4ptp4l0-21swapper/207:19:382
134491490,4ptp4l0-21swapper/009:40:140
134491490,4ptp4l0-21swapper/009:40:140
134491490,3ptp4l0-21swapper/010:07:170
134491490,12ptp4l9-21ksoftirqd/012:35:210
3235499484,2cyclictest121rcu_preempt09:05:191
32354994827,3cyclictest25-21ksoftirqd/112:18:541
3235499482,3cyclictest25-21ksoftirqd/108:25:011
32354994822,6cyclictest25-21ksoftirqd/111:10:181
134491480,4ptp4l0-21swapper/212:02:032
134491480,2ptp4l0-21swapper/009:29:100
3235499477,3cyclictest25-21ksoftirqd/107:24:111
134491470,4ptp4l0-21swapper/009:21:300
134491470,4ptp4l0-21swapper/009:16:300
134491470,3ptp4l0-21swapper/211:12:422
134491470,3ptp4l0-21swapper/210:25:252
3235499465,2cyclictest25-21ksoftirqd/108:15:161
32354994623,3cyclictest25-21ksoftirqd/108:12:581
32354994614,3cyclictest25-21ksoftirqd/108:30:291
134491460,9ptp4l0-21swapper/010:00:250
134491460,4ptp4l0-21swapper/012:07:050
134491460,3ptp4l0-21swapper/309:07:383
134491460,3ptp4l0-21swapper/210:30:222
3235499455,2cyclictest25-21ksoftirqd/110:25:271
134491450,3ptp4l33-21ksoftirqd/209:33:022
134491450,3ptp4l0-21swapper/212:17:482
134491450,3ptp4l0-21swapper/010:46:090
134491450,11ptp4l0-21swapper/207:35:542
32354994420,3cyclictest25-21ksoftirqd/108:00:241
134491440,9ptp4l0-21swapper/211:46:302
134491440,9ptp4l0-21swapper/207:56:232
134491440,3ptp4l0-21swapper/312:17:223
134491440,3ptp4l0-21swapper/311:27:053
134491440,3ptp4l0-21swapper/009:39:220
3235499435,2cyclictest25-21ksoftirqd/112:25:051
32354994310,9cyclictest25-21ksoftirqd/109:50:131
134491430,9ptp4l0-21swapper/211:44:462
134491430,9ptp4l0-21swapper/210:10:592
134491430,9ptp4l0-21swapper/210:10:592
134491430,9ptp4l0-21swapper/209:58:362
134491430,8ptp4l0-21swapper/208:22:322
134491430,6ptp4l0-21swapper/208:35:502
134491430,4ptp4l27210-21grep09:15:262
134491430,4ptp4l12248-21apt-get11:05:142
134491430,4ptp4l0-21swapper/009:06:520
134491430,4ptp4l0-21swapper/007:34:480
134491430,3ptp4l0-21swapper/308:16:553
134491430,3ptp4l0-21swapper/212:35:202
134491430,3ptp4l0-21swapper/211:55:062
134491430,2ptp4l0-21swapper/310:58:003
32356994234,4cyclictest41-21ksoftirqd/309:10:123
134491420,9ptp4l0-21swapper/011:05:160
134491420,8ptp4l8774-21sed08:35:270
134491420,4ptp4l2974-21apt-get11:55:120
134491420,4ptp4l28985-21iostat_ios11:40:180
134491420,4ptp4l16845-21diskstats10:05:142
134491420,4ptp4l0-21swapper/307:14:343
134491420,4ptp4l0-21swapper/011:54:210
134491420,4ptp4l0-21swapper/010:32:150
134491420,4ptp4l0-21swapper/008:32:070
134491420,3ptp4l0-21swapper/312:33:583
134491410,5ptp4l32477-21/usr/sbin/munin07:10:140
134491410,5ptp4l25159-21swap11:30:260
134491410,5ptp4l0-21swapper/311:20:173
134491410,5ptp4l0-21swapper/309:20:193
134491410,4ptp4l4659-21apt-get07:20:122
134491410,4ptp4l0-21swapper/209:44:142
134491410,4ptp4l0-21swapper/209:44:142
134491410,4ptp4l0-21swapper/208:40:302
134491410,4ptp4l0-21swapper/208:16:282
134491410,4ptp4l0-21swapper/010:18:210
134491410,4ptp4l0-21swapper/008:56:520
134491410,4ptp4l0-21swapper/008:00:060
134491410,4ptp4l0-21swapper/007:41:410
134491410,4ptp4l0-21swapper/007:25:210
134491410,3ptp4l7279-21apt-get09:45:133
134491410,3ptp4l6598-21ls08:30:302
134491410,3ptp4l0-21swapper/011:47:280
3235699403,35cyclictest0-21swapper/309:37:003
134491400,8ptp4l0-21swapper/208:46:262
134491400,5ptp4l0-21swapper/310:25:233
134491400,5ptp4l0-21swapper/308:30:153
134491400,5ptp4l0-21swapper/307:56:343
134491400,5ptp4l0-21swapper/211:22:302
134491400,4ptp4l41-21ksoftirqd/307:40:183
134491400,4ptp4l397-21/usr/sbin/munin10:40:283
134491400,4ptp4l2318-21gnome-shell12:13:592
134491400,4ptp4l0-21swapper/312:00:153
134491400,4ptp4l0-21swapper/310:30:203
134491400,4ptp4l0-21swapper/310:00:113
134491400,4ptp4l0-21swapper/209:48:052
134491400,4ptp4l0-21swapper/209:27:492
134491400,4ptp4l0-21swapper/209:05:192
134491400,4ptp4l0-21swapper/012:15:210
134491400,4ptp4l0-21swapper/012:03:470
134491400,4ptp4l0-21swapper/010:00:000
134491400,4ptp4l0-21swapper/008:21:070
134491400,4ptp4l0-21swapper/008:14:100
134491400,4ptp4l0-21swapper/008:06:400
134491400,4ptp4l0-21swapper/007:55:200
134491400,4ptp4l0-21swapper/007:21:410
134491400,3ptp4l31119-21iostat_ios10:35:190
134491400,3ptp4l19364-21apt-get12:30:142
134491400,3ptp4l16527-21apt-get08:55:133
134491400,3ptp4l14713-21apt-get12:20:123
134491400,3ptp4l1301-21snmpd10:16:022
134491400,3ptp4l10590-21ls09:50:200
134491400,3ptp4l0-21swapper/209:10:122
32356993933,4cyclictest41-21ksoftirqd/311:05:123
134491390,6ptp4l8647-21chrt07:25:332
134491390,5ptp4l3409-21netstat07:15:220
134491390,5ptp4l3409-21netstat07:15:220
134491390,5ptp4l0-21swapper/310:05:193
134491390,4ptp4l0-21swapper/312:35:233
134491390,4ptp4l0-21swapper/312:25:293
134491390,4ptp4l0-21swapper/311:35:563
134491390,4ptp4l0-21swapper/310:50:263
134491390,4ptp4l0-21swapper/309:41:393
134491390,4ptp4l0-21swapper/309:41:393
134491390,4ptp4l0-21swapper/212:25:242
134491390,4ptp4l0-21swapper/212:09:052
134491390,4ptp4l0-21swapper/211:50:442
134491390,4ptp4l0-21swapper/211:34:162
134491390,4ptp4l0-21swapper/211:16:032
134491390,4ptp4l0-21swapper/211:01:162
134491390,4ptp4l0-21swapper/210:45:442
134491390,4ptp4l0-21swapper/210:37:042
134491390,4ptp4l0-21swapper/209:35:052
134491390,4ptp4l0-21swapper/209:00:222
134491390,4ptp4l0-21swapper/208:10:462
134491390,4ptp4l0-21swapper/208:02:182
134491390,4ptp4l0-21swapper/207:50:252
134491390,4ptp4l0-21swapper/207:14:542
134491390,4ptp4l0-21swapper/012:30:270
134491390,4ptp4l0-21swapper/011:15:190
134491390,4ptp4l0-21swapper/011:12:100
134491390,4ptp4l0-21swapper/010:55:520
134491390,4ptp4l0-21swapper/010:51:440
134491390,4ptp4l0-21swapper/009:45:200
134491390,4ptp4l0-21swapper/009:11:580
134491390,4ptp4l0-21swapper/007:54:320
134491390,4ptp4l0-21swapper/007:35:230
134491390,3ptp4l5776-21ntp_states07:20:243
134491390,3ptp4l14230-21apt-get08:50:132
134491390,3ptp4l11003-21ntp_states12:10:260
134491390,3ptp4l0-21swapper/210:00:402
134491390,3ptp4l0-21swapper/008:52:310
32356993832,4cyclictest41-21ksoftirqd/311:42:573
32356993832,4cyclictest41-21ksoftirqd/311:01:253
134491380,5ptp4l3235399cyclictest12:27:410
134491380,5ptp4l30615-21cpuspeed10:35:143
134491380,5ptp4l0-21swapper/307:35:143
134491380,4ptp4l0-21swapper/312:11:023
134491380,4ptp4l0-21swapper/311:53:493
134491380,4ptp4l0-21swapper/311:30:243
134491380,4ptp4l0-21swapper/311:15:243
134491380,4ptp4l0-21swapper/310:45:293
134491380,4ptp4l0-21swapper/310:10:143
134491380,4ptp4l0-21swapper/310:10:143
134491380,4ptp4l0-21swapper/309:25:273
134491380,4ptp4l0-21swapper/308:50:123
134491380,4ptp4l0-21swapper/308:20:353
134491380,4ptp4l0-21swapper/307:45:203
134491380,4ptp4l0-21swapper/307:15:153
134491380,4ptp4l0-21swapper/307:15:143
134491380,4ptp4l0-21swapper/210:20:032
134491380,4ptp4l0-21swapper/208:25:322
134491380,4ptp4l0-21swapper/008:41:160
134491380,4ptp4l0-21swapper/007:45:150
134491380,3ptp4l21847-21if_enp4s010:15:183
134491380,3ptp4l1301-21snmpd08:47:133
134491380,3ptp4l0-21swapper/307:50:263
134491380,3ptp4l0-21swapper/207:45:342
134491380,3ptp4l0-21swapper/008:15:150
134491370,4ptp4l1301-21snmpd12:07:013
134491370,4ptp4l0-21swapper/310:23:423
134491370,4ptp4l0-21swapper/309:56:183
134491370,4ptp4l0-21swapper/309:19:153
134491370,3ptp4l0-21swapper/307:32:263
32356993631,3cyclictest41-21ksoftirqd/308:05:003
134491360,4ptp4l0-21swapper/308:11:523
134491360,4ptp4l0-21swapper/308:06:383
134491360,3ptp4l3235699cyclictest08:37:513
134491360,3ptp4l0-21swapper/308:40:193
3235699352,4cyclictest32711-21apt-get09:30:143
134491350,4ptp4l0-21swapper/309:04:263
134491350,3ptp4l0-21swapper/308:27:213
46198310,25rtkit-daemon1456-21mactelnetd07:07:263
137891233,13phc2sys30596-21iostat_ios07:05:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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