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2026-04-28 - 13:30
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Tue Apr 28, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2799221380,3sleep10-21swapper/123:15:211
134491680,4ptp4l0-21swapper/223:30:152
230562670,4sleep20-21swapper/223:05:192
134491650,3ptp4l22285-21iostat_ios19:35:190
134491600,16ptp4l0-21swapper/020:15:160
134491600,16ptp4l0-21swapper/020:15:160
134491580,3ptp4l3554-21apt-get21:15:140
134491580,3ptp4l0-21swapper/200:25:272
134491580,3ptp4l0-21swapper/119:30:231
134491580,3ptp4l0-21swapper/022:55:110
134491580,3ptp4l0-21swapper/021:20:160
134491570,5ptp4l9776-21runrttasks19:09:163
134491570,5ptp4l0-21swapper/023:55:270
134491550,4ptp4l0-21swapper/320:40:283
134491550,4ptp4l0-21swapper/022:15:170
134491550,3ptp4l0-21swapper/023:31:460
134491550,3ptp4l0-21swapper/000:37:400
134491550,3ptp4l0-21swapper/000:37:400
134491540,4ptp4l0-21swapper/022:24:420
134491540,4ptp4l0-21swapper/019:33:360
134491530,4ptp4l0-21swapper/119:20:261
134491530,3ptp4l0-21swapper/320:25:263
134491530,3ptp4l0-21swapper/219:31:102
134491530,3ptp4l0-21swapper/020:28:390
196802520,5sleep30-21swapper/300:05:293
196802520,5sleep30-21swapper/300:05:293
134491520,5ptp4l0-21swapper/021:40:220
134491520,4ptp4l0-21swapper/322:12:293
134491520,4ptp4l0-21swapper/221:11:042
134491520,3ptp4l0-21swapper/220:01:022
134491520,3ptp4l0-21swapper/120:30:261
134491520,3ptp4l0-21swapper/021:06:590
134491520,3ptp4l0-21swapper/000:13:450
134491510,4ptp4l0-21swapper/223:51:372
134491510,4ptp4l0-21swapper/222:45:362
134491510,4ptp4l0-21swapper/222:32:352
134491510,4ptp4l0-21swapper/221:05:422
134491510,4ptp4l0-21swapper/200:33:512
134491510,4ptp4l0-21swapper/023:07:570
134491510,4ptp4l0-21swapper/021:45:340
134491510,3ptp4l0-21swapper/221:46:442
134491510,18ptp4l25-21ksoftirqd/122:36:091
134491510,17ptp4l9-21ksoftirqd/000:16:340
134491510,17ptp4l25-21ksoftirqd/119:57:031
134491500,6ptp4l0-21swapper/219:08:302
134491500,4ptp4l0-21swapper/221:50:442
134491500,4ptp4l0-21swapper/220:32:172
134491500,4ptp4l0-21swapper/220:28:042
134491500,4ptp4l0-21swapper/219:59:172
134491500,4ptp4l0-21swapper/200:19:172
134491500,4ptp4l0-21swapper/023:10:370
134491500,4ptp4l0-21swapper/019:54:240
134491500,3ptp4l0-21swapper/220:39:122
134491490,4ptp4l0-21swapper/323:14:343
134491490,4ptp4l0-21swapper/320:55:283
134491490,4ptp4l0-21swapper/223:22:122
134491490,4ptp4l0-21swapper/222:21:462
134491490,4ptp4l0-21swapper/023:52:480
134491490,4ptp4l0-21swapper/020:41:550
134491490,3ptp4l0-21swapper/200:20:312
134491480,4ptp4l10107-21apt-get20:20:102
134491480,4ptp4l0-21swapper/322:57:333
134491480,4ptp4l0-21swapper/223:27:342
134491480,4ptp4l0-21swapper/019:28:230
134491480,3ptp4l0-21swapper/323:15:173
134491480,3ptp4l0-21swapper/222:16:242
134491480,3ptp4l0-21swapper/021:27:340
134491470,5ptp4l0-21swapper/022:40:120
134491470,4ptp4l0-21swapper/022:14:140
134491470,3ptp4l0-21swapper/000:31:040
134491470,10ptp4l41-21ksoftirqd/322:33:373
134491460,4ptp4l0-21swapper/322:27:153
134491460,4ptp4l0-21swapper/022:03:450
134491460,3ptp4l0-21swapper/020:58:420
134491460,3ptp4l0-21swapper/020:30:440
134491460,11ptp4l0-21swapper/221:15:172
134491450,4ptp4l0-21swapper/123:48:131
134491450,3ptp4l241ktimersoftd/119:45:211
134491450,3ptp4l241ktimersoftd/119:45:211
134491450,3ptp4l0-21swapper/220:48:322
134491450,10ptp4l0-21swapper/321:00:553
134491440,9ptp4l0-21swapper/321:44:493
134491440,9ptp4l0-21swapper/321:24:503
134491440,9ptp4l0-21swapper/321:15:393
134491440,6ptp4l8380-21df21:25:142
134491440,4ptp4l10155-21apt-get19:10:122
134491440,4ptp4l0-21swapper/323:25:143
134491440,3ptp4l0-21swapper/223:00:172
134491440,3ptp4l0-21swapper/220:06:532
134491440,3ptp4l0-21swapper/020:21:550
134491440,2ptp4l0-21swapper/123:38:221
134491440,10ptp4l0-21swapper/219:24:132
134491430,9ptp4l0-21swapper/322:04:293
134491430,9ptp4l0-21swapper/320:30:093
134491430,9ptp4l0-21swapper/319:50:363
134491430,5ptp4l0-21swapper/320:05:193
134491430,4ptp4l22821-21ls20:45:213
134491430,4ptp4l0-21swapper/323:52:223
134491430,4ptp4l0-21swapper/000:03:160
134491430,3ptp4l0-21swapper/121:09:251
134491430,3ptp4l0-21swapper/021:50:390
134491420,9ptp4l0-21swapper/321:28:183
134491420,8ptp4l15466-21kworker/3:100:21:563
134491420,6ptp4l0-21swapper/119:12:171
134491420,5ptp4l8941-21/usr/sbin/munin19:05:241
134491420,5ptp4l6440-21iostat_ios21:20:171
134491420,5ptp4l4402-21/usr/sbin/munin22:25:160
134491420,5ptp4l28620-21apt-get19:50:121
134491420,4ptp4l31760-21irqstats19:55:200
134491420,4ptp4l27610-21iostat23:15:182
134491420,4ptp4l25501-21ntp_states20:50:221
134491420,4ptp4l14542-21python22:45:281
134491420,4ptp4l11225-21ntp_states20:20:223
134491420,4ptp4l0-21swapper/322:42:543
134491420,4ptp4l0-21swapper/319:16:233
134491420,4ptp4l0-21swapper/020:00:320
134491420,3ptp4l5488-21apt-get20:10:130
134491420,3ptp4l24031-21apt-get19:40:130
134491420,3ptp4l13616-21irqstats21:35:191
134491420,3ptp4l0-21swapper/121:19:411
134491420,2ptp4l0-21swapper/120:11:271
134491420,1ptp4l0-21swapper/223:35:342
134491410,9ptp4l0-21swapper/221:38:082
134491410,6ptp4l0-21swapper/019:05:250
134491410,5ptp4l0-21swapper/320:00:243
134491410,5ptp4l0-21swapper/221:55:272
134491410,5ptp4l0-21swapper/021:35:210
134491410,5ptp4l0-21swapper/021:04:000
134491410,5ptp4l0-21swapper/020:47:430
134491410,4ptp4l4547-21iostat_ios22:25:171
134491410,4ptp4l31278-21grep00:30:283
134491410,4ptp4l27624-21ls20:55:192
134491410,4ptp4l27272-21meminfo19:45:210
134491410,4ptp4l27272-21meminfo19:45:210
134491410,4ptp4l25962-21irqstats00:20:201
134491410,4ptp4l20081-21df_inode21:50:151
134491410,4ptp4l1764-21apt-get23:30:113
134491410,4ptp4l1012699cyclictest23:55:582
134491410,4ptp4l0-21swapper/323:20:113
134491410,4ptp4l0-21swapper/323:01:313
134491410,4ptp4l0-21swapper/319:13:073
134491410,4ptp4l0-21swapper/121:58:231
134491410,4ptp4l0-21swapper/023:35:170
134491410,4ptp4l0-21swapper/020:06:180
134491410,3ptp4l9137-21iostat_ios22:35:150
134491410,3ptp4l4759-21ls20:05:281
134491410,3ptp4l26895-21apt-get22:05:111
134491410,3ptp4l19281-21apt-get21:47:181
134491410,3ptp4l13761-21iostat22:45:200
134491410,3ptp4l0-21swapper/023:26:070
134491410,2ptp4l23472-21ls23:05:213
10126994135,4cyclictest33-21ksoftirqd/219:38:272
134491400,6ptp4l23909-21ntp_offset00:15:253
134491400,5ptp4l4108-21/usr/sbin/munin23:35:253
134491400,5ptp4l15852-21cstates00:00:162
134491400,5ptp4l1301-21snmpd20:15:073
134491400,5ptp4l1301-21snmpd20:15:073
134491400,5ptp4l0-21swapper/323:48:583
134491400,5ptp4l0-21swapper/321:51:343
134491400,5ptp4l0-21swapper/319:47:103
134491400,5ptp4l0-21swapper/319:47:103
134491400,5ptp4l0-21swapper/123:23:341
134491400,5ptp4l0-21swapper/121:25:241
134491400,5ptp4l0-21swapper/100:10:161
134491400,4ptp4l25699-21users19:40:302
134491400,4ptp4l25644-21ps20:50:220
134491400,4ptp4l1240-21hddtemp_smartct20:00:161
134491400,4ptp4l11590-21ntp_states21:30:240
134491400,4ptp4l0-21swapper/322:52:353
134491400,4ptp4l0-21swapper/322:20:083
134491400,4ptp4l0-21swapper/321:10:273
134491400,4ptp4l0-21swapper/321:08:263
134491400,4ptp4l0-21swapper/320:50:273
134491400,4ptp4l0-21swapper/320:10:533
134491400,4ptp4l0-21swapper/319:40:583
134491400,4ptp4l0-21swapper/319:35:203
134491400,4ptp4l0-21swapper/319:27:103
134491400,4ptp4l0-21swapper/319:20:243
134491400,4ptp4l0-21swapper/300:37:283
134491400,4ptp4l0-21swapper/300:37:283
134491400,4ptp4l0-21swapper/300:10:083
134491400,4ptp4l0-21swapper/221:31:252
134491400,4ptp4l0-21swapper/221:00:092
134491400,4ptp4l0-21swapper/220:40:212
134491400,4ptp4l0-21swapper/220:11:522
134491400,4ptp4l0-21swapper/122:56:441
134491400,4ptp4l0-21swapper/122:50:291
134491400,4ptp4l0-21swapper/122:10:131
134491400,4ptp4l0-21swapper/121:30:191
134491400,4ptp4l0-21swapper/120:40:241
134491400,4ptp4l0-21swapper/119:35:191
134491400,4ptp4l0-21swapper/022:50:110
134491400,4ptp4l0-21swapper/022:09:450
134491400,4ptp4l0-21swapper/021:10:210
134491400,4ptp4l0-21swapper/000:29:300
134491400,4ptp4l0-21swapper/000:20:190
134491400,3ptp4l32717-21ls22:15:213
134491400,3ptp4l24126-21apt-get22:00:031
134491400,3ptp4l22497-21hddtemp_smartct21:55:170
134491400,3ptp4l10725-21iostat_ios19:10:180
134491400,3ptp4l0-21swapper/200:05:142
134491400,3ptp4l0-21swapper/200:05:142
134491400,3ptp4l0-21swapper/023:03:570
134491400,3ptp4l0-21swapper/019:15:130
134491400,2ptp4l2615-21ls22:20:191
10127994035,3cyclictest41-21ksoftirqd/322:40:003
10127994035,3cyclictest27222-21fschecks_count22:05:143
134491390,5ptp4l32716-21chrt23:25:191
134491390,5ptp4l22150-21awk00:10:292
134491390,5ptp4l18473-21proc_pri20:35:240
134491390,5ptp4l14878-21cat23:55:261
134491390,5ptp4l0-21swapper/323:59:403
134491390,4ptp4l6900-21idleruntime23:40:160
134491390,4ptp4l30704-21python23:20:250
134491390,4ptp4l2769-21meminfo23:30:181
134491390,4ptp4l0-21swapper/323:40:183
134491390,4ptp4l0-21swapper/321:47:573
134491390,4ptp4l0-21swapper/321:33:403
134491390,4ptp4l0-21swapper/320:35:133
134491390,4ptp4l0-21swapper/319:56:003
134491390,4ptp4l0-21swapper/319:30:203
134491390,4ptp4l0-21swapper/300:25:153
134491390,4ptp4l0-21swapper/222:59:412
134491390,4ptp4l0-21swapper/222:41:362
134491390,4ptp4l0-21swapper/222:40:002
134491390,4ptp4l0-21swapper/222:26:252
134491390,4ptp4l0-21swapper/222:12:152
134491390,4ptp4l0-21swapper/221:21:292
134491390,4ptp4l0-21swapper/220:15:032
134491390,4ptp4l0-21swapper/220:15:022
134491390,4ptp4l0-21swapper/219:25:132
134491390,4ptp4l0-21swapper/219:17:282
134491390,4ptp4l0-21swapper/200:35:022
134491390,4ptp4l0-21swapper/200:35:022
134491390,4ptp4l0-21swapper/122:32:411
134491390,4ptp4l0-21swapper/122:15:271
134491390,4ptp4l0-21swapper/121:40:181
134491390,4ptp4l0-21swapper/121:00:211
134491390,4ptp4l0-21swapper/120:45:541
134491390,4ptp4l0-21swapper/120:25:151
134491390,4ptp4l0-21swapper/120:20:211
134491390,4ptp4l0-21swapper/120:17:491
134491390,4ptp4l0-21swapper/120:17:491
134491390,4ptp4l0-21swapper/119:25:141
134491390,4ptp4l0-21swapper/119:15:021
134491390,4ptp4l0-21swapper/100:35:271
134491390,4ptp4l0-21swapper/100:35:271
134491390,4ptp4l0-21swapper/100:09:271
134491390,4ptp4l0-21swapper/100:09:271
134491390,4ptp4l0-21swapper/023:45:320
134491390,4ptp4l0-21swapper/023:18:130
134491390,4ptp4l0-21swapper/022:30:070
134491390,3ptp4l24456-21hddtemp_smartct19:40:161
134491390,3ptp4l0-21swapper/321:55:073
134491390,3ptp4l0-21swapper/321:35:323
134491390,3ptp4l0-21swapper/300:00:283
134491390,3ptp4l0-21swapper/222:04:052
134491390,3ptp4l0-21swapper/220:52:012
134491390,3ptp4l0-21swapper/121:10:241
134491390,3ptp4l0-21swapper/120:55:551
134491380,4ptp4l0-21swapper/322:47:223
134491380,4ptp4l0-21swapper/223:10:122
134491380,4ptp4l0-21swapper/222:52:192
134491380,4ptp4l0-21swapper/222:05:342
134491380,4ptp4l0-21swapper/221:41:532
134491380,4ptp4l0-21swapper/219:50:142
134491380,4ptp4l0-21swapper/219:47:042
134491380,4ptp4l0-21swapper/219:47:042
134491380,4ptp4l0-21swapper/123:52:471
134491380,4ptp4l0-21swapper/120:35:061
134491380,4ptp4l0-21swapper/100:30:141
134491380,4ptp4l0-21swapper/100:25:191
134491380,4ptp4l0-21swapper/100:16:351
134491380,4ptp4l0-21swapper/100:02:311
134491380,4ptp4l0-21swapper/019:20:130
134491380,4ptp4l0-21swapper/000:05:590
134491380,4ptp4l0-21swapper/000:05:590
134491380,3ptp4l24124-21users23:05:281
134491380,3ptp4l11360-21/usr/sbin/munin22:40:161
134491380,3ptp4l0-21swapper/223:40:242
134491380,3ptp4l0-21swapper/123:10:231
134491380,3ptp4l0-21swapper/123:00:071
134491370,3ptp4l0-21swapper/223:45:262
134491370,3ptp4l0-21swapper/123:41:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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