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2026-07-30 - 00:54
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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 Wed Jul 29, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1017921490,6sleep12674599cyclictest10:00:241
134491670,3ptp4l0-21swapper/111:10:281
134491670,3ptp4l0-21swapper/010:40:220
46652630,5sleep10-21swapper/111:00:141
134491620,23ptp4l0-21swapper/210:08:162
131212610,5sleep341-21ksoftirqd/309:00:003
26744996032,3cyclictest121rcu_preempt10:04:110
134491580,3ptp4l11762-21phc2sys07:45:241
134491570,5ptp4l0-21swapper/210:50:212
134491570,5ptp4l0-21swapper/009:50:240
134491570,3ptp4l0-21swapper/307:35:493
134491570,3ptp4l0-21swapper/007:46:040
2674799562,52cyclictest0-21swapper/309:31:083
134491560,3ptp4l22627-21cpuspeed_turbos09:20:150
134491550,4ptp4l0-21swapper/007:06:090
134491550,3ptp4l0-21swapper/310:55:243
134491550,3ptp4l0-21swapper/010:59:130
134491550,3ptp4l0-21swapper/007:42:070
134491540,4ptp4l0-21swapper/109:57:471
134491540,3ptp4l0-21swapper/112:24:011
134491530,6ptp4l8081-21sshd08:48:271
134491530,6ptp4l8081-21sshd08:48:271
134491530,4ptp4l0-21swapper/010:25:220
134491530,3ptp4l0-21swapper/109:20:411
134491530,17ptp4l24740-21fschecks_count07:05:161
98572520,5sleep29859-21phc2sys-jitter08:50:252
134491520,4ptp4l0-21swapper/109:00:071
134491520,3ptp4l0-21swapper/011:20:290
134491510,4ptp4l0-21swapper/207:47:272
134491510,3ptp4l0-21swapper/109:10:231
134491510,3ptp4l0-21swapper/011:26:420
134491510,3ptp4l0-21swapper/008:37:360
134491500,4ptp4l0-21swapper/112:17:121
134491500,4ptp4l0-21swapper/012:30:040
134491500,4ptp4l0-21swapper/011:52:090
134491500,4ptp4l0-21swapper/008:16:530
134491500,4ptp4l0-21swapper/008:16:530
134491500,3ptp4l0-21swapper/111:57:081
134491500,3ptp4l0-21swapper/008:54:120
134491500,12ptp4l0-21swapper/107:31:481
134491490,4ptp4l0-21swapper/210:22:432
134491490,4ptp4l0-21swapper/009:58:410
134491490,3ptp4l0-21swapper/110:19:581
134491490,3ptp4l0-21swapper/108:10:051
134491480,4ptp4l0-21swapper/210:16:012
134491480,3ptp4l0-21swapper/209:15:542
134491480,3ptp4l0-21swapper/111:18:031
134491480,3ptp4l0-21swapper/011:14:200
134491480,3ptp4l0-21swapper/009:04:590
134491480,3ptp4l0-21swapper/008:26:100
134491480,3ptp4l0-21swapper/008:03:110
134491480,2ptp4l0-21swapper/112:02:431
134491480,2ptp4l0-21swapper/009:11:480
134491480,11ptp4l0-21swapper/112:38:031
134491470,5ptp4l33-21ksoftirqd/209:03:422
134491470,4ptp4l0-21swapper/009:47:190
134491470,3ptp4l0-21swapper/109:35:351
134491470,3ptp4l0-21swapper/108:44:291
134491470,3ptp4l0-21swapper/012:20:130
134491470,3ptp4l0-21swapper/010:21:160
134491470,3ptp4l0-21swapper/008:40:240
134491460,4ptp4l0-21swapper/209:35:212
134491460,4ptp4l0-21swapper/107:55:141
134491460,4ptp4l0-21swapper/008:49:440
134491460,4ptp4l0-21swapper/008:49:440
134491460,4ptp4l0-21swapper/008:05:310
134491460,4ptp4l0-21swapper/007:32:170
134491460,3ptp4l0-21swapper/107:25:501
134491460,3ptp4l0-21swapper/010:31:300
134491460,3ptp4l0-21swapper/009:29:080
134491460,3ptp4l0-21swapper/007:56:210
134491460,11ptp4l0-21swapper/208:05:242
26744994511,4cyclictest9-21ksoftirqd/008:13:440
134691450,31getstats25-21ksoftirqd/111:44:371
134491450,9ptp4l0-21swapper/207:37:172
134491450,3ptp4l0-21swapper/310:15:593
134491450,3ptp4l0-21swapper/207:22:032
134491450,3ptp4l0-21swapper/111:35:061
134491450,3ptp4l0-21swapper/111:25:311
134491450,3ptp4l0-21swapper/109:52:241
134491450,3ptp4l0-21swapper/012:25:220
134491450,3ptp4l0-21swapper/012:03:350
26744994411,4cyclictest9-21ksoftirqd/007:18:520
134491440,9ptp4l0-21swapper/212:01:352
134491440,9ptp4l0-21swapper/208:42:412
134491440,9ptp4l0-21swapper/208:13:412
134491440,4ptp4l0-21swapper/108:36:211
134491440,3ptp4l0-21swapper/110:47:091
134491440,3ptp4l0-21swapper/107:15:201
134491440,3ptp4l0-21swapper/012:06:560
134491440,10ptp4l0-21swapper/210:57:162
2674499433,3cyclictest9-21ksoftirqd/010:45:120
134491430,9ptp4l0-21swapper/211:41:112
134491430,9ptp4l0-21swapper/208:35:032
134491430,9ptp4l0-21swapper/207:43:012
134491430,8ptp4l0-21swapper/207:10:472
134491430,5ptp4l0-21swapper/311:10:223
134491430,4ptp4l0-21swapper/111:46:251
134491430,3ptp4l0-21swapper/210:00:242
2674499426,5cyclictest9-21ksoftirqd/008:20:170
26744994238,2cyclictest9-21ksoftirqd/012:20:000
134491420,9ptp4l0-21swapper/212:08:352
134491420,9ptp4l0-21swapper/209:22:542
134491420,9ptp4l0-21swapper/208:21:502
134491420,8ptp4l0-21swapper/208:04:022
134491420,5ptp4l27847-21apt-get11:50:043
134491420,5ptp4l11760-21df11:15:140
134491420,5ptp4l0-21swapper/310:50:133
134491420,5ptp4l0-21swapper/108:25:221
134491420,4ptp4l24982-21iostat_ios08:15:181
134491420,4ptp4l24982-21iostat_ios08:15:171
134491420,3ptp4l4660-21apt-get11:00:130
134491420,10ptp4l0-21swapper/208:59:422
134491420,10ptp4l0-21swapper/207:17:512
26745994136,3cyclictest25-21ksoftirqd/109:00:001
26744994113,3cyclictest9-21ksoftirqd/011:44:480
26744994111,5cyclictest9-21ksoftirqd/007:25:030
134491410,9ptp4l0-21swapper/209:05:422
134491410,8ptp4l0-21swapper/208:17:352
134491410,8ptp4l0-21swapper/208:17:342
134491410,5ptp4l0-21swapper/311:55:133
134491410,5ptp4l0-21swapper/310:05:203
134491410,5ptp4l0-21swapper/210:35:122
134491410,5ptp4l0-21swapper/011:05:210
134491410,5ptp4l0-21swapper/010:35:160
134491410,5ptp4l0-21swapper/009:15:160
134491410,4ptp4l16158-21iostat_ios09:05:191
134491410,4ptp4l0-21swapper/312:05:283
134491410,4ptp4l0-21swapper/207:26:472
134491410,4ptp4l0-21swapper/112:30:231
134491410,3ptp4l6655-21ls12:10:281
134491410,3ptp4l25796-21apt-get11:45:143
2674799403,35cyclictest0-21swapper/308:22:283
26746994035,3cyclictest33-21ksoftirqd/210:13:422
134691400,10getstats0-21swapper/110:55:511
134491400,6ptp4l17047-21sed09:05:273
134491400,5ptp4l12944-21sshd08:59:080
134491400,5ptp4l0-21swapper/310:10:203
134491400,5ptp4l0-21swapper/211:10:162
134491400,4ptp4l8210-21apt-get08:50:021
134491400,4ptp4l747-21ls09:40:260
134491400,4ptp4l31155-21ntp_states10:45:233
134491400,4ptp4l29825-21hddtemp_smartct09:35:180
134491400,4ptp4l27685-21meminfo08:20:191
134491400,4ptp4l27257-21apt-get10:40:021
134491400,4ptp4l21020-21irqstats09:15:171
134491400,4ptp4l17577-21irqstats12:35:180
134491400,4ptp4l13564-21ls12:25:271
134491400,4ptp4l12313-21memory10:05:220
134491400,4ptp4l0-21swapper/311:40:183
134491400,4ptp4l0-21swapper/311:35:273
134491400,4ptp4l0-21swapper/311:20:163
134491400,4ptp4l0-21swapper/308:25:213
134491400,4ptp4l0-21swapper/211:52:392
134491400,4ptp4l0-21swapper/211:46:232
134491400,4ptp4l0-21swapper/210:26:382
134491400,4ptp4l0-21swapper/207:30:102
134491400,4ptp4l0-21swapper/109:45:231
134491400,4ptp4l0-21swapper/109:25:271
134491400,4ptp4l0-21swapper/108:30:241
134491400,4ptp4l0-21swapper/011:30:210
134491400,4ptp4l0-21swapper/009:30:270
134491400,3ptp4l7341-21python07:35:261
134491400,3ptp4l6354-21ntp_states12:10:250
134491400,3ptp4l27718-21ls07:10:203
134491400,3ptp4l13748-21irqstats07:50:190
134491400,3ptp4l0-21swapper/312:35:123
26744993934,3cyclictest17733-21kworker/0:011:55:300
134491390,6ptp4l31950-21tr09:40:131
134491390,6ptp4l0-21swapper/309:55:003
134491390,5ptp4l7943-21chrt07:38:450
134491390,5ptp4l0-21swapper/307:30:303
134491390,4ptp4l27311-21df09:30:151
134491390,4ptp4l26584-21irqrtprio11:45:200
134491390,4ptp4l1701-21ntp_states12:00:273
134491390,4ptp4l1301-21snmpd08:30:273
134491390,4ptp4l0-21swapper/312:30:063
134491390,4ptp4l0-21swapper/311:08:243
134491390,4ptp4l0-21swapper/310:30:153
134491390,4ptp4l0-21swapper/310:28:013
134491390,4ptp4l0-21swapper/309:37:393
134491390,4ptp4l0-21swapper/309:15:253
134491390,4ptp4l0-21swapper/308:35:233
134491390,4ptp4l0-21swapper/308:13:423
134491390,4ptp4l0-21swapper/307:58:083
134491390,4ptp4l0-21swapper/307:48:523
134491390,4ptp4l0-21swapper/307:15:283
134491390,4ptp4l0-21swapper/212:35:402
134491390,4ptp4l0-21swapper/212:30:042
134491390,4ptp4l0-21swapper/212:20:472
134491390,4ptp4l0-21swapper/212:17:262
134491390,4ptp4l0-21swapper/212:11:402
134491390,4ptp4l0-21swapper/211:25:052
134491390,4ptp4l0-21swapper/210:47:042
134491390,4ptp4l0-21swapper/210:40:132
134491390,4ptp4l0-21swapper/210:33:402
134491390,4ptp4l0-21swapper/209:45:122
134491390,4ptp4l0-21swapper/209:43:092
134491390,4ptp4l0-21swapper/209:30:252
134491390,4ptp4l0-21swapper/209:29:382
134491390,4ptp4l0-21swapper/208:32:582
134491390,4ptp4l0-21swapper/207:54:582
134491390,4ptp4l0-21swapper/111:30:181
134491390,4ptp4l0-21swapper/011:39:480
134491390,4ptp4l0-21swapper/010:51:580
134491390,4ptp4l0-21swapper/010:19:410
134491390,4ptp4l0-21swapper/010:10:180
134491390,4ptp4l0-21swapper/009:05:100
134491390,3ptp4l31607-21df07:20:140
134491390,3ptp4l31315-21/usr/sbin/munin08:30:220
134491390,3ptp4l31302-21sed11:55:202
134491390,3ptp4l29465-21hddtemp_smartct08:25:182
134491390,3ptp4l23809-21meminfo10:30:211
134491390,3ptp4l0-21swapper/211:21:142
134491390,3ptp4l0-21swapper/209:56:372
134491390,3ptp4l0-21swapper/208:45:582
134491390,3ptp4l0-21swapper/208:45:582
134491390,3ptp4l0-21swapper/112:05:211
134491390,3ptp4l0-21swapper/108:00:211
134491380,4ptp4l41-21ksoftirqd/311:30:273
134491380,4ptp4l0-21swapper/312:25:003
134491380,4ptp4l0-21swapper/311:15:123
134491380,4ptp4l0-21swapper/311:00:203
134491380,4ptp4l0-21swapper/310:40:253
134491380,4ptp4l0-21swapper/310:35:153
134491380,4ptp4l0-21swapper/309:56:133
134491380,4ptp4l0-21swapper/309:47:053
134491380,4ptp4l0-21swapper/309:41:033
134491380,4ptp4l0-21swapper/309:13:333
134491380,4ptp4l0-21swapper/309:00:163
134491380,4ptp4l0-21swapper/308:15:163
134491380,4ptp4l0-21swapper/308:15:153
134491380,4ptp4l0-21swapper/308:09:123
134491380,4ptp4l0-21swapper/307:24:283
134491380,4ptp4l0-21swapper/211:30:302
134491380,4ptp4l0-21swapper/211:15:492
134491380,4ptp4l0-21swapper/209:50:172
134491380,4ptp4l0-21swapper/207:55:002
134491380,4ptp4l0-21swapper/111:20:311
134491380,4ptp4l0-21swapper/110:50:131
134491380,4ptp4l0-21swapper/110:25:141
134491380,4ptp4l0-21swapper/110:05:291
134491380,4ptp4l0-21swapper/108:05:241
134491380,4ptp4l0-21swapper/107:10:141
134491380,4ptp4l0-21swapper/007:11:580
134491380,3ptp4l0-21swapper/312:14:043
134491380,3ptp4l0-21swapper/310:00:263
134491380,3ptp4l0-21swapper/308:50:473
134491380,3ptp4l0-21swapper/308:00:233
134491380,3ptp4l0-21swapper/307:40:173
134491380,3ptp4l0-21swapper/212:27:122
134491380,3ptp4l0-21swapper/211:08:152
134491380,3ptp4l0-21swapper/111:52:571
134491380,3ptp4l0-21swapper/110:20:171
134491380,3ptp4l0-21swapper/107:50:211
134491380,3ptp4l0-21swapper/107:20:251
134491380,2ptp4l22222-21strings11:35:232
134491370,4ptp4l0-21swapper/312:16:523
134491370,4ptp4l0-21swapper/311:26:483
134491370,4ptp4l0-21swapper/309:26:213
134491370,4ptp4l0-21swapper/309:21:203
134491370,4ptp4l0-21swapper/308:46:233
134491370,4ptp4l0-21swapper/308:46:233
134491370,4ptp4l0-21swapper/211:00:162
134491370,4ptp4l0-21swapper/110:12:551
134491370,3ptp4l7235-21df_abs11:05:141
134491370,3ptp4l0-21swapper/310:23:103
134491370,3ptp4l0-21swapper/209:10:052
134491370,3ptp4l0-21swapper/110:35:211
134491370,3ptp4l0-21swapper/107:40:241
134491360,3ptp4l0-21swapper/312:25:183
134491350,3ptp4l0-21swapper/307:54:303
134491350,3ptp4l0-21swapper/307:27:413
134491330,3ptp4l0-21swapper/308:44:133
137891225,11phc2sys0-21swapper/207:05:122
137891113,4phc2sys0-21swapper/307:08:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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