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2026-08-12 - 14:27
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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 Aug 12, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
935321550,6sleep1814599cyclictest19:10:231
814699690,37cyclictest24049-21chrt19:41:372
814699680,31cyclictest25053-21chrt23:13:192
814699680,31cyclictest25053-21chrt23:13:192
814699670,38cyclictest14730-21chrt20:30:592
814699670,36cyclictest21904-21chrt19:38:522
814699661,28cyclictest26332-21chrt19:46:272
814699660,37cyclictest10819-21chrt22:43:092
814699660,37cyclictest10819-21chrt22:43:092
814699660,36cyclictest3324-21taskset21:18:582
814699660,35cyclictest7726-21chrt20:15:382
814699660,28cyclictest13488-21hddtemp_smartct19:20:172
814699650,36cyclictest17310-21chrt19:28:492
134491650,19ptp4l0-21swapper/300:15:253
814699640,36cyclictest12615-21chrt20:28:222
814699640,35cyclictest30385-21taskset00:34:422
814699640,35cyclictest15265-21chrt20:35:002
814699630,35cyclictest22167-21chrt21:58:212
814699630,28cyclictest31459-21taskset20:00:142
814699630,27cyclictest29304-21chrt22:13:292
814699630,27cyclictest29304-21chrt22:13:292
814699630,27cyclictest28095-21chrt00:29:492
814699620,36cyclictest32357-21taskset00:35:342
814699620,35cyclictest10207-21chrt19:14:092
814699620,34cyclictest16049-21taskset00:03:452
814699620,28cyclictest25457-21taskset00:20:302
134491620,5ptp4l0-21swapper/320:25:193
814699610,36cyclictest11317-21chrt23:52:112
814699610,35cyclictest1301-21snmpd20:48:292
814699610,35cyclictest12621-21taskset21:36:392
814699610,28cyclictest26265-21chrt20:56:272
134491610,26ptp4l41-21ksoftirqd/319:45:253
814699600,36cyclictest24539-21chrt22:01:182
814699600,36cyclictest19646-21chrt19:34:232
814699600,34cyclictest28792-21taskset21:04:092
814699600,34cyclictest10188-21taskset20:21:402
814699600,29cyclictest1401-21chrt22:22:032
814699600,28cyclictest5426-21taskset20:10:372
814699600,28cyclictest24082-21chrt20:52:542
814699600,27cyclictest6100-21chrt22:32:342
814699600,27cyclictest1860-21taskset23:33:112
814699590,35cyclictest23153-21chrt00:18:542
814699590,27cyclictest13805-21chrt23:59:412
134491590,2ptp4l0-21swapper/000:05:480
814699580,29cyclictest31104-21chrt19:58:502
8146995714,41cyclictest0-21swapper/223:23:092
814699570,28cyclictest13207-21taskset22:46:382
134491570,3ptp4l0-21swapper/100:20:241
134491560,4ptp4l0-21swapper/019:55:320
814599557,6cyclictest0-21swapper/123:50:231
189552540,4sleep118949-21fschecks_time23:00:141
814599538,6cyclictest0-21swapper/100:05:301
814599537,7cyclictest0-21swapper/120:40:121
134491530,4ptp4l0-21swapper/120:50:431
134491530,3ptp4l0-21swapper/020:55:010
814599524,7cyclictest13164-21grep19:20:141
134491520,4ptp4l0-21swapper/320:11:053
134491520,4ptp4l0-21swapper/023:06:150
134491520,4ptp4l0-21swapper/021:54:440
134491520,4ptp4l0-21swapper/021:20:450
134491520,4ptp4l0-21swapper/020:35:240
134491520,3ptp4l0-21swapper/019:41:130
134491520,16ptp4l0-21swapper/119:06:231
134491520,10ptp4l0-21swapper/319:27:583
134491520,10ptp4l0-21swapper/000:10:150
134491510,3ptp4l0-21swapper/323:48:103
134491510,3ptp4l0-21swapper/320:05:313
134491500,4ptp4l0-21swapper/322:19:443
134491500,4ptp4l0-21swapper/023:17:250
134491500,4ptp4l0-21swapper/022:35:330
134491500,3ptp4l0-21swapper/022:12:580
134491500,3ptp4l0-21swapper/022:12:580
814699493,20cyclictest0-21swapper/223:40:532
814599493,6cyclictest0-21swapper/119:25:161
134491490,3ptp4l0-21swapper/020:43:470
814599487,6cyclictest0-21swapper/123:25:271
134491480,5ptp4l0-21swapper/019:23:410
134491480,4ptp4l0-21swapper/320:20:533
134491480,3ptp4l0-21swapper/000:19:290
814599476,6cyclictest0-21swapper/122:40:171
814599476,6cyclictest0-21swapper/122:40:171
814599470,14cyclictest3103-21irqrtprio23:35:191
134491470,4ptp4l14495-21python21:40:260
134491470,4ptp4l14495-21python21:40:260
134491470,4ptp4l0-21swapper/223:49:452
134491470,4ptp4l0-21swapper/023:41:100
134491470,3ptp4l0-21swapper/023:21:460
814599463,5cyclictest0-21swapper/121:20:211
814599460,15cyclictest30286-21irqrtprio22:15:201
814599460,15cyclictest26193-21irqrtprio23:15:181
134491460,9ptp4l12912-21ntp_states23:55:253
134491460,4ptp4l0-21swapper/023:25:530
134491450,8ptp4l0-21swapper/322:10:143
134491450,8ptp4l0-21swapper/322:10:143
134491450,4ptp4l0-21swapper/023:11:490
134491450,4ptp4l0-21swapper/023:11:490
134491450,4ptp4l0-21swapper/022:42:080
134491450,4ptp4l0-21swapper/022:42:080
814699442,22cyclictest0-21swapper/223:26:342
814599442,7cyclictest0-21swapper/123:20:211
134491440,4ptp4l0-21swapper/320:36:293
134491440,10ptp4l0-21swapper/319:52:053
134491430,6ptp4l0-21swapper/019:10:270
134491430,5ptp4l21622-21hddtemp_smartct00:15:181
134491430,4ptp4l22785-21apt-get22:00:143
134491430,10ptp4l0-21swapper/000:34:310
814599425,6cyclictest0-21swapper/100:04:581
814599424,10cyclictest6846-21df_inode22:35:161
814599420,15cyclictest22258-21sshd19:40:121
134491420,9ptp4l0-21swapper/221:28:022
134491420,9ptp4l0-21swapper/000:22:080
134491420,8ptp4l0-21swapper/322:55:253
134491420,7ptp4l0-21swapper/000:27:370
134491420,5ptp4l0-21swapper/321:50:133
134491420,5ptp4l0-21swapper/121:35:181
134491420,5ptp4l0-21swapper/100:25:281
134491420,4ptp4l7208-21ls21:25:231
134491420,4ptp4l7035-21irqstats21:25:210
134491420,4ptp4l31227-21iostat00:35:180
134491420,4ptp4l21372-21ls19:35:263
134491420,4ptp4l20900-21meminfo19:35:200
134491420,4ptp4l17246-21ls22:55:200
134491420,4ptp4l0-21swapper/021:08:090
134491420,3ptp4l121rcu_preempt22:55:272
814599410,10cyclictest0-21swapper/122:12:431
814599410,10cyclictest0-21swapper/122:12:431
134491410,9ptp4l0-21swapper/219:51:302
134491410,8ptp4l0-21swapper/023:38:210
134491410,5ptp4l41-21ksoftirqd/300:10:013
134491410,5ptp4l27965-21/usr/sbin/munin19:50:200
134491410,5ptp4l13216-21/usr/sbin/munin23:55:290
134491410,5ptp4l0-21swapper/323:10:233
134491410,5ptp4l0-21swapper/323:10:233
134491410,5ptp4l0-21swapper/321:20:143
134491410,5ptp4l0-21swapper/221:40:132
134491410,5ptp4l0-21swapper/221:40:132
134491410,5ptp4l0-21swapper/122:25:181
134491410,4ptp4l8318-21ntp_states23:45:261
134491410,4ptp4l6332-21diskstats20:15:150
134491410,4ptp4l4197-21df_inode21:20:172
134491410,4ptp4l32661-21diskstats23:30:150
134491410,4ptp4l23383-21ntp_states19:40:233
134491410,4ptp4l2030-21apt-get23:35:032
134491410,4ptp4l19324-21users19:30:271
134491410,4ptp4l15926-21iostat19:25:180
134491410,4ptp4l11856-21ntp_states19:15:230
134491410,4ptp4l11048-21df_inode19:15:151
134491410,4ptp4l10744-21apt-get19:15:122
134491410,4ptp4l0-21swapper/223:15:532
134491410,4ptp4l0-21swapper/122:48:471
134491410,4ptp4l0-21swapper/121:30:281
134491410,4ptp4l0-21swapper/100:10:191
134491410,4ptp4l0-21swapper/023:50:160
134491410,4ptp4l0-21swapper/023:47:110
134491410,4ptp4l0-21swapper/022:00:200
134491410,3ptp4l23571-21hddtemp_smartct23:10:171
134491410,3ptp4l23571-21hddtemp_smartct23:10:171
134491410,3ptp4l10839-21apt-get21:35:123
814599401,4cyclictest0-21swapper/120:18:531
814599400,6cyclictest16387-21ls21:45:191
134491400,9ptp4l0-21swapper/223:01:192
134491400,9ptp4l0-21swapper/222:25:492
134491400,5ptp4l0-21swapper/123:55:171
134491400,5ptp4l0-21swapper/021:30:190
134491400,5ptp4l0-21swapper/020:10:280
134491400,4ptp4l311-21hddtemp_smartct23:30:171
134491400,4ptp4l14564-21ls20:30:281
134491400,4ptp4l12371-21users20:25:291
134491400,4ptp4l0-21swapper/323:35:033
134491400,4ptp4l0-21swapper/320:15:243
134491400,4ptp4l0-21swapper/223:09:072
134491400,4ptp4l0-21swapper/122:21:391
134491400,4ptp4l0-21swapper/122:06:591
134491400,4ptp4l0-21swapper/122:00:011
134491400,4ptp4l0-21swapper/121:55:201
134491400,4ptp4l0-21swapper/121:05:241
134491400,4ptp4l0-21swapper/120:35:181
134491400,4ptp4l0-21swapper/119:58:351
134491400,4ptp4l0-21swapper/119:51:501
134491400,4ptp4l0-21swapper/100:35:241
134491400,4ptp4l0-21swapper/022:31:200
134491400,4ptp4l0-21swapper/021:56:010
134491400,4ptp4l0-21swapper/020:47:140
134491400,4ptp4l0-21swapper/020:05:250
134491400,3ptp4l29316-21memory00:30:211
134491400,3ptp4l25680-21ntpq19:45:221
134491400,3ptp4l1679-21df_inode20:05:221
134491400,3ptp4l15139-21ls22:50:271
134491400,3ptp4l0-21swapper/022:08:380
134491400,14ptp4l15206-21grep00:00:240
8147993933,4cyclictest41-21ksoftirqd/319:15:253
134491390,5ptp4l19909-21cat00:10:212
134491390,5ptp4l13638-21ps19:20:183
134491390,4ptp4l8604-21/usr/sbin/munin20:20:130
134491390,4ptp4l33-21ksoftirqd/222:15:162
134491390,4ptp4l32585-21/usr/sbin/munin21:10:250
134491390,4ptp4l0-21swapper/323:50:133
134491390,4ptp4l0-21swapper/322:29:013
134491390,4ptp4l0-21swapper/322:20:283
134491390,4ptp4l0-21swapper/321:55:103
134491390,4ptp4l0-21swapper/321:14:083
134491390,4ptp4l0-21swapper/320:01:033
134491390,4ptp4l0-21swapper/319:55:053
134491390,4ptp4l0-21swapper/319:30:553
134491390,4ptp4l0-21swapper/319:13:553
134491390,4ptp4l0-21swapper/222:36:572
134491390,4ptp4l0-21swapper/222:05:132
134491390,4ptp4l0-21swapper/221:11:242
134491390,4ptp4l0-21swapper/221:07:332
134491390,4ptp4l0-21swapper/200:05:192
134491390,4ptp4l0-21swapper/123:41:201
134491390,4ptp4l0-21swapper/121:50:191
134491390,4ptp4l0-21swapper/121:40:151
134491390,4ptp4l0-21swapper/121:40:151
134491390,4ptp4l0-21swapper/121:10:191
134491390,4ptp4l0-21swapper/121:00:111
134491390,4ptp4l0-21swapper/120:55:171
134491390,4ptp4l0-21swapper/120:45:251
134491390,4ptp4l0-21swapper/021:15:150
134491390,4ptp4l0-21swapper/020:53:330
134491390,4ptp4l0-21swapper/020:01:050
134491390,4ptp4l0-21swapper/019:48:550
134491390,4ptp4l0-21swapper/019:05:130
134491390,3ptp4l19159-21ls21:50:252
134491390,3ptp4l18672-21ls19:30:210
134491390,3ptp4l15875-21hddtemp_smartct21:45:160
134491390,3ptp4l13423-21hddtemp_smartct20:30:160
134491390,3ptp4l11719-21ls20:25:210
134491390,3ptp4l11051-21df21:35:150
134491390,3ptp4l10969-21apt-get22:45:020
134491390,3ptp4l0-21swapper/322:45:213
134491390,3ptp4l0-21swapper/220:05:292
134491390,3ptp4l0-21swapper/123:05:211
134491390,3ptp4l0-21swapper/122:55:061
134491390,3ptp4l0-21swapper/121:15:241
134491380,4ptp4l3865-21cpuspeed_turbos20:10:151
134491380,4ptp4l0-21swapper/323:44:383
134491380,4ptp4l0-21swapper/323:30:463
134491380,4ptp4l0-21swapper/323:16:413
134491380,4ptp4l0-21swapper/323:00:143
134491380,4ptp4l0-21swapper/322:40:193
134491380,4ptp4l0-21swapper/322:40:193
134491380,4ptp4l0-21swapper/322:05:583
134491380,4ptp4l0-21swapper/321:31:103
134491380,4ptp4l0-21swapper/321:25:163
134491380,4ptp4l0-21swapper/321:03:113
134491380,4ptp4l0-21swapper/320:52:453
134491380,4ptp4l0-21swapper/300:32:483
134491380,4ptp4l0-21swapper/300:25:503
134491380,4ptp4l0-21swapper/300:22:223
134491380,4ptp4l0-21swapper/300:12:293
134491380,4ptp4l0-21swapper/300:01:263
134491380,4ptp4l0-21swapper/222:50:142
134491380,4ptp4l0-21swapper/221:30:092
134491380,4ptp4l0-21swapper/220:43:232
134491380,4ptp4l0-21swapper/122:32:181
134491380,4ptp4l0-21swapper/120:04:071
134491380,4ptp4l0-21swapper/119:35:151
134491380,4ptp4l0-21swapper/023:02:370
134491380,4ptp4l0-21swapper/022:23:420
134491380,4ptp4l0-21swapper/022:18:170
134491380,3ptp4l0-21swapper/323:27:393
134491380,3ptp4l0-21swapper/321:40:143
134491380,3ptp4l0-21swapper/321:40:143
134491380,3ptp4l0-21swapper/320:45:573
134491380,3ptp4l0-21swapper/221:45:242
134491380,3ptp4l0-21swapper/022:50:150
134491380,3ptp4l0-21swapper/022:27:350
134491380,3ptp4l0-21swapper/021:01:230
134491370,4ptp4l0-21swapper/323:06:033
134491370,4ptp4l0-21swapper/322:50:143
134491370,4ptp4l0-21swapper/321:45:243
134491370,4ptp4l0-21swapper/321:07:183
134491370,4ptp4l0-21swapper/320:43:523
134491370,3ptp4l0-21swapper/323:24:073
134491370,3ptp4l0-21swapper/320:55:133
134491370,3ptp4l0-21swapper/300:35:253
134491360,4ptp4l0-21swapper/321:15:463
134491360,4ptp4l0-21swapper/320:30:183
134491360,3ptp4l0-21swapper/120:20:171
134491350,3ptp4l0-21swapper/322:37:113
134491340,4ptp4l0-21swapper/322:31:293
137891233,13phc2sys7866-21ls19:10:012
77302114,4sleep30-21swapper/319:08:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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