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2026-08-05 - 12:56
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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 Wed Aug 05, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3258821760,6sleep12516499cyclictest19:25:171
2516599782,74cyclictest0-21swapper/221:05:282
134491640,4ptp4l0-21swapper/021:45:150
134491640,22ptp4l5129-21df23:05:150
134491600,5ptp4l0-21swapper/119:20:291
134491600,4ptp4l0-21swapper/222:15:262
134491600,4ptp4l0-21swapper/100:25:251
134491590,4ptp4l0-21swapper/119:05:121
134491590,4ptp4l0-21swapper/022:35:150
134491580,4ptp4l0-21swapper/021:15:300
134491580,3ptp4l0-21swapper/321:53:443
134491570,4ptp4l0-21swapper/321:05:273
134491570,4ptp4l0-21swapper/223:17:042
134491570,3ptp4l0-21swapper/220:08:502
134491560,3ptp4l11916-21irqrtprio19:50:190
134491560,3ptp4l0-21swapper/100:17:011
134491560,3ptp4l0-21swapper/023:25:150
134491560,3ptp4l0-21swapper/023:25:150
134491550,4ptp4l0-21swapper/300:03:273
134491550,4ptp4l0-21swapper/022:56:050
134491550,3ptp4l19570-21ntp_states21:15:243
134491550,3ptp4l1317-21runrttasks19:40:370
134491550,3ptp4l0-21swapper/320:38:503
134491540,4ptp4l0-21swapper/100:30:581
134491540,11ptp4l0-21swapper/220:20:202
134491530,4ptp4l0-21swapper/220:00:512
134491530,3ptp4l0-21swapper/020:10:320
134491530,3ptp4l0-21swapper/020:10:320
134491530,3ptp4l0-21swapper/000:25:320
134491520,4ptp4l0-21swapper/322:43:363
134491520,4ptp4l0-21swapper/321:35:163
134491520,3ptp4l0-21swapper/222:24:032
134491520,2ptp4l0-21swapper/020:28:000
134491520,13ptp4l0-21swapper/220:39:272
2516599512,3cyclictest0-21swapper/219:45:282
134491510,5ptp4l0-21swapper/020:16:320
134491510,4ptp4l0-21swapper/220:13:162
134491510,4ptp4l0-21swapper/220:13:162
134491510,4ptp4l0-21swapper/219:50:352
134491510,4ptp4l0-21swapper/122:27:591
134491510,4ptp4l0-21swapper/122:17:311
134491510,4ptp4l0-21swapper/120:45:451
134491510,4ptp4l0-21swapper/022:32:230
134491510,4ptp4l0-21swapper/020:34:260
134491510,4ptp4l0-21swapper/019:38:450
134491510,3ptp4l0-21swapper/123:10:231
134491510,3ptp4l0-21swapper/100:23:501
134491510,3ptp4l0-21swapper/023:19:440
134491500,4ptp4l0-21swapper/323:55:573
134491500,4ptp4l0-21swapper/320:04:463
134491500,4ptp4l0-21swapper/222:36:062
134491500,4ptp4l0-21swapper/120:24:091
134491500,4ptp4l0-21swapper/022:15:020
134491500,4ptp4l0-21swapper/021:25:070
134491500,4ptp4l0-21swapper/020:59:580
134491500,4ptp4l0-21swapper/019:16:260
134491500,3ptp4l6849-21apt-get22:00:132
134491500,3ptp4l0-21swapper/022:21:070
134491490,4ptp4l0-21swapper/223:40:032
134491490,4ptp4l0-21swapper/123:21:511
134491490,4ptp4l0-21swapper/120:56:051
134491490,4ptp4l0-21swapper/119:19:201
134491490,4ptp4l0-21swapper/000:01:100
134491490,3ptp4l0-21swapper/221:54:512
134491490,3ptp4l0-21swapper/120:03:221
134491480,7ptp4l24746-21ls19:09:591
134491480,4ptp4l0-21swapper/320:17:513
134491480,4ptp4l0-21swapper/123:50:341
134491480,4ptp4l0-21swapper/123:18:071
134491480,4ptp4l0-21swapper/123:07:481
134491480,4ptp4l0-21swapper/120:11:181
134491480,4ptp4l0-21swapper/120:11:171
134491480,4ptp4l0-21swapper/022:09:580
134491480,4ptp4l0-21swapper/021:32:450
134491480,4ptp4l0-21swapper/000:14:370
134491480,3ptp4l0-21swapper/123:25:331
134491480,3ptp4l0-21swapper/123:25:321
134491480,3ptp4l0-21swapper/121:28:091
134491480,3ptp4l0-21swapper/100:38:481
25163994711,3cyclictest9-21ksoftirqd/020:50:280
134491470,9ptp4l0-21swapper/221:00:262
134491470,4ptp4l0-21swapper/123:30:421
134491470,4ptp4l0-21swapper/022:40:470
134491470,3ptp4l0-21swapper/220:55:222
134491470,3ptp4l0-21swapper/123:00:151
134491470,3ptp4l0-21swapper/122:49:581
134491470,3ptp4l0-21swapper/121:33:171
134491470,3ptp4l0-21swapper/100:07:141
134491470,3ptp4l0-21swapper/023:34:400
134491470,16ptp4l1301-21snmpd22:42:262
134491470,12ptp4l0-21swapper/219:20:222
134491460,3ptp4l0-21swapper/123:38:241
134491460,3ptp4l0-21swapper/020:05:400
134491460,3ptp4l0-21swapper/019:46:430
134491460,3ptp4l0-21swapper/019:10:210
2516599451,2cyclictest0-21swapper/222:34:392
134491450,4ptp4l0-21swapper/121:54:451
134491450,3ptp4l121rcu_preempt19:44:022
134491450,3ptp4l0-21swapper/123:42:051
134491450,3ptp4l0-21swapper/122:51:061
134491450,3ptp4l0-21swapper/023:11:330
134491450,3ptp4l0-21swapper/021:12:550
134491450,11ptp4l0-21swapper/222:50:012
134491450,10ptp4l0-21swapper/321:32:473
134491440,8ptp4l0-21swapper/021:01:480
134491440,6ptp4l5479-21memory21:55:213
134491440,5ptp4l0-21swapper/320:25:133
134491440,4ptp4l0-21swapper/121:55:241
134491440,4ptp4l0-21swapper/019:32:100
134491440,3ptp4l0-21swapper/223:08:052
2516599431,2cyclictest0-21swapper/222:10:282
134491430,9ptp4l10887-21taskset19:47:323
134491430,9ptp4l0-21swapper/219:10:502
134491430,9ptp4l0-21swapper/200:20:562
134491430,5ptp4l4594-21apt-get20:45:102
134491430,5ptp4l23700-21ls19:05:210
134491430,4ptp4l13630-21apt-get19:55:110
134491430,4ptp4l12221-21apt-get00:30:120
134491430,4ptp4l0-21swapper/220:25:282
134491430,4ptp4l0-21swapper/200:30:462
134491430,4ptp4l0-21swapper/021:50:130
134491430,3ptp4l2078-21apt-get19:30:121
134491430,3ptp4l0-21swapper/220:43:482
2516699428,8cyclictest41-21ksoftirqd/322:25:263
25164994236,3cyclictest25-21ksoftirqd/120:30:001
134491420,9ptp4l0-21swapper/200:07:452
134491420,8ptp4l0-21swapper/223:03:042
134491420,8ptp4l0-21swapper/221:11:392
134491420,7ptp4l15244-21cut00:35:222
134491420,5ptp4l7691-21/usr/sbin/munin19:40:231
134491420,5ptp4l32752-21hddtemp_smartct20:35:171
134491420,5ptp4l0-21swapper/322:00:153
134491420,5ptp4l0-21swapper/321:20:223
134491420,5ptp4l0-21swapper/319:30:143
134491420,5ptp4l0-21swapper/221:40:142
134491420,5ptp4l0-21swapper/220:50:152
134491420,5ptp4l0-21swapper/219:15:152
134491420,4ptp4l8196-21iostat00:20:190
134491420,4ptp4l4634-21df19:35:142
134491420,4ptp4l29985-21apt-get21:40:123
134491420,4ptp4l29585-21apt-get20:30:042
134491420,4ptp4l24013-21memory21:25:183
134491420,4ptp4l16154-21apt-get21:10:131
134491420,4ptp4l12008-21iostat22:10:180
134491420,4ptp4l0-21swapper/321:47:223
134491420,4ptp4l0-21swapper/320:45:113
134491420,4ptp4l0-21swapper/319:35:143
134491420,3ptp4l22777-21apt-get22:35:021
2516499416,3cyclictest25-21ksoftirqd/122:20:201
2516499413,5cyclictest25-21ksoftirqd/119:38:351
25164994134,4cyclictest25-21ksoftirqd/123:48:531
134491410,8ptp4l0-21swapper/223:32:032
134491410,6ptp4l997-21open_inodes21:45:221
134491410,5ptp4l0-21swapper/122:05:191
134491410,5ptp4l0-21swapper/120:05:161
134491410,4ptp4l7965-21ntp_states22:00:251
134491410,4ptp4l30601-21iostat_ios20:30:203
134491410,4ptp4l30088-21df19:20:160
134491410,4ptp4l29194-21meminfo23:55:211
134491410,4ptp4l28237-21iostat_ios21:35:202
134491410,4ptp4l2608-21diskstats20:40:180
134491410,4ptp4l21697-21iostat23:40:190
134491410,4ptp4l0-21swapper/319:50:233
134491410,4ptp4l0-21swapper/223:55:362
134491410,4ptp4l0-21swapper/221:28:132
134491410,4ptp4l0-21swapper/122:55:241
134491410,4ptp4l0-21swapper/122:10:271
134491410,4ptp4l0-21swapper/100:14:561
134491410,4ptp4l0-21swapper/022:00:200
134491410,4ptp4l0-21swapper/021:44:090
134491410,4ptp4l0-21swapper/020:48:340
134491410,4ptp4l0-21swapper/019:25:220
134491410,4ptp4l0-21swapper/000:15:230
134491410,3ptp4l9144-21apt-get22:05:143
134491410,3ptp4l28787-21ntp_states21:35:250
134491410,3ptp4l27786-21apt-get23:55:020
134491410,3ptp4l20768-21apt-get21:20:142
134491410,3ptp4l20703-21apt-get22:30:113
25164994035,3cyclictest25-21ksoftirqd/120:45:001
25164994035,3cyclictest25-21ksoftirqd/119:55:161
134491400,9ptp4l0-21swapper/200:11:332
134491400,8ptp4l0-21swapper/200:19:122
134491400,6ptp4l0-21swapper/221:30:422
134491400,5ptp4l2516699cyclictest00:30:253
134491400,5ptp4l0-21swapper/122:30:221
134491400,5ptp4l0-21swapper/021:55:160
134491400,4ptp4l31405-21sendmail_mailqu22:50:250
134491400,4ptp4l12943-21ntp_states23:20:230
134491400,4ptp4l11504-21apt-get21:00:143
134491400,4ptp4l0-21swapper/322:50:223
134491400,4ptp4l0-21swapper/322:35:153
134491400,4ptp4l0-21swapper/322:10:243
134491400,4ptp4l0-21swapper/320:40:323
134491400,4ptp4l0-21swapper/320:20:173
134491400,4ptp4l0-21swapper/320:05:123
134491400,4ptp4l0-21swapper/319:55:143
134491400,4ptp4l0-21swapper/319:22:403
134491400,4ptp4l0-21swapper/300:10:293
134491400,4ptp4l0-21swapper/223:52:442
134491400,4ptp4l0-21swapper/223:37:332
134491400,4ptp4l0-21swapper/223:27:002
134491400,4ptp4l0-21swapper/223:27:002
134491400,4ptp4l0-21swapper/223:24:502
134491400,4ptp4l0-21swapper/222:56:062
134491400,4ptp4l0-21swapper/222:45:132
134491400,4ptp4l0-21swapper/222:25:162
134491400,4ptp4l0-21swapper/221:56:022
134491400,4ptp4l0-21swapper/219:59:102
134491400,4ptp4l0-21swapper/200:00:512
134491400,4ptp4l0-21swapper/022:25:250
134491400,4ptp4l0-21swapper/021:06:010
134491400,4ptp4l0-21swapper/020:20:420
134491400,3ptp4l9035-21apt-get19:45:141
134491400,3ptp4l732-21diskstats00:05:190
134491400,3ptp4l30767-21df00:00:141
134491400,3ptp4l23429-21apt-get23:45:132
134491400,3ptp4l19085-21df_inode23:35:190
134491400,3ptp4l15639-21ntp_states00:35:260
134491400,3ptp4l13737-21apt-get22:15:123
134491400,3ptp4l0-21swapper/020:35:160
25166993934,3cyclictest41-21ksoftirqd/323:44:593
2516499393,3cyclictest121rcu_preempt21:00:291
2516499391,3cyclictest121rcu_preempt21:20:261
134491390,4ptp4l2516699cyclictest20:57:273
134491390,4ptp4l0-21swapper/323:45:233
134491390,4ptp4l0-21swapper/323:30:153
134491390,4ptp4l0-21swapper/323:20:013
134491390,4ptp4l0-21swapper/323:15:173
134491390,4ptp4l0-21swapper/323:14:173
134491390,4ptp4l0-21swapper/322:45:063
134491390,4ptp4l0-21swapper/321:10:023
134491390,4ptp4l0-21swapper/320:53:133
134491390,4ptp4l0-21swapper/320:15:003
134491390,4ptp4l0-21swapper/320:14:593
134491390,4ptp4l0-21swapper/319:40:143
134491390,4ptp4l0-21swapper/319:25:433
134491390,4ptp4l0-21swapper/319:12:143
134491390,4ptp4l0-21swapper/300:25:263
134491390,4ptp4l0-21swapper/300:20:083
134491390,4ptp4l0-21swapper/300:17:213
134491390,4ptp4l0-21swapper/222:05:162
134491390,4ptp4l0-21swapper/221:15:172
134491390,4ptp4l0-21swapper/219:32:242
134491390,4ptp4l0-21swapper/200:26:182
134491390,4ptp4l0-21swapper/122:40:211
134491390,4ptp4l0-21swapper/121:40:541
134491390,4ptp4l0-21swapper/121:38:141
134491390,4ptp4l0-21swapper/121:17:141
134491390,4ptp4l0-21swapper/120:50:331
134491390,4ptp4l0-21swapper/120:31:311
134491390,4ptp4l0-21swapper/119:50:211
134491390,4ptp4l0-21swapper/023:45:290
134491390,4ptp4l0-21swapper/023:00:380
134491390,4ptp4l0-21swapper/022:45:270
134491390,4ptp4l0-21swapper/020:00:110
134491390,3ptp4l16102-21/usr/sbin/munin22:20:323
134491390,3ptp4l0-21swapper/322:56:483
134491390,3ptp4l0-21swapper/319:15:233
134491390,3ptp4l0-21swapper/223:14:572
134491390,3ptp4l0-21swapper/120:16:371
134491390,3ptp4l0-21swapper/023:50:140
134491390,3ptp4l0-21swapper/021:20:550
134491380,4ptp4l0-21swapper/323:50:213
134491380,4ptp4l0-21swapper/323:06:033
134491380,4ptp4l0-21swapper/323:02:273
134491380,4ptp4l0-21swapper/300:37:563
134491380,4ptp4l0-21swapper/121:05:221
134491380,3ptp4l0-21swapper/323:37:023
134491380,3ptp4l0-21swapper/300:06:493
134491380,3ptp4l0-21swapper/221:45:112
134491380,3ptp4l0-21swapper/220:15:292
134491380,3ptp4l0-21swapper/219:25:342
134491370,3ptp4l0-21swapper/323:25:003
134491370,3ptp4l0-21swapper/323:25:003
137891233,13phc2sys23630-21meminfo19:05:203
226802223,11sleep222683-21apt-get19:05:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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