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2026-05-12 - 08:01
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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 Tue May 12, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
820921480,5sleep12699299cyclictest23:05:201
134491700,7ptp4l33-21ksoftirqd/222:15:132
137402660,6sleep00-21swapper/000:25:260
137402660,6sleep00-21swapper/000:25:260
134491660,4ptp4l32093-21ls23:55:281
2699499616,11cyclictest32065-21df_abs19:20:133
134491600,3ptp4l19639-21timerwakeupswit20:00:272
134491600,10ptp4l0-21swapper/100:00:331
134491570,4ptp4l0-21swapper/100:09:381
134491570,3ptp4l0-21swapper/123:30:281
134491570,3ptp4l0-21swapper/022:30:280
134491570,3ptp4l0-21swapper/000:20:220
2699499563,11cyclictest21260-21latency_hist23:35:013
134491560,4ptp4l0-21swapper/321:30:133
134491560,4ptp4l0-21swapper/123:26:401
134491560,4ptp4l0-21swapper/021:14:460
134491560,3ptp4l0-21swapper/100:10:121
134491560,3ptp4l0-21swapper/021:30:360
134491550,4ptp4l0-21swapper/120:43:321
134491550,2ptp4l0-21swapper/122:50:201
134491550,14ptp4l0-21swapper/223:41:462
134491550,13ptp4l0-21swapper/121:30:181
2699499545,14cyclictest16674-21fschecks_count22:15:143
2699499541,10cyclictest0-21swapper/320:35:123
134491540,4ptp4l0-21swapper/221:26:272
134491540,4ptp4l0-21swapper/123:36:441
134491540,4ptp4l0-21swapper/023:34:310
134491540,3ptp4l0-21swapper/100:35:201
26991995320,4cyclictest9-21ksoftirqd/019:30:000
134491530,4ptp4l0-21swapper/219:21:562
134491530,4ptp4l0-21swapper/122:10:131
134491530,4ptp4l0-21swapper/119:20:291
134491530,4ptp4l0-21swapper/022:43:230
134491530,4ptp4l0-21swapper/021:26:160
134491530,4ptp4l0-21swapper/020:28:530
134491530,3ptp4l0-21swapper/119:39:491
26991995222,4cyclictest9-21ksoftirqd/000:20:000
134491520,4ptp4l0-21swapper/223:13:452
134491520,4ptp4l0-21swapper/023:21:330
134491520,4ptp4l0-21swapper/020:51:410
134491520,4ptp4l0-21swapper/020:51:410
134491520,3ptp4l0-21swapper/020:31:380
2699499513,9cyclictest0-21swapper/321:10:223
2699499513,10cyclictest32452-21cat20:30:163
134491510,4ptp4l0-21swapper/023:54:250
134491510,4ptp4l0-21swapper/000:14:370
134491510,3ptp4l0-21swapper/023:06:250
134491510,17ptp4l0-21swapper/119:27:031
134491510,12ptp4l26327-21users19:05:281
2699499506,14cyclictest7673-21cat20:45:203
2699499506,11cyclictest0-21swapper/320:41:553
2699499506,10cyclictest0-21swapper/323:46:443
2699499506,10cyclictest0-21swapper/300:03:463
2699499503,18cyclictest24252-21date22:30:193
26991995022,3cyclictest9-21ksoftirqd/020:45:060
26991995014,7cyclictest9-21ksoftirqd/000:30:260
134491500,5ptp4l0-21swapper/219:14:042
134491500,4ptp4l0-21swapper/122:56:081
134491500,3ptp4l0-21swapper/100:21:061
134491500,3ptp4l0-21swapper/019:35:350
134491500,3ptp4l0-21swapper/000:05:370
2699499499,6cyclictest134491ptp4l22:13:123
2699499499,10cyclictest134491ptp4l22:45:253
2699499496,7cyclictest30799-21df23:55:153
2699499496,5cyclictest0-21swapper/323:39:593
2699499496,10cyclictest0-21swapper/321:08:233
2699499496,10cyclictest0-21swapper/319:36:563
2699499495,6cyclictest134491ptp4l22:23:313
26991994921,3cyclictest9-21ksoftirqd/023:00:180
26991994917,4cyclictest9-21ksoftirqd/021:05:010
26991994915,4cyclictest9-21ksoftirqd/022:15:160
134491490,5ptp4l0-21swapper/220:34:022
134491490,4ptp4l0-21swapper/220:48:322
134491490,4ptp4l0-21swapper/020:38:360
134491490,3ptp4l0-21swapper/222:23:072
134491490,3ptp4l0-21swapper/219:42:542
134491490,3ptp4l0-21swapper/121:05:171
134491490,3ptp4l0-21swapper/120:45:141
134491490,3ptp4l0-21swapper/100:28:581
134491490,3ptp4l0-21swapper/100:28:581
134491490,17ptp4l9-21ksoftirqd/019:24:400
2699499486,9cyclictest0-21swapper/323:14:323
2699499486,5cyclictest0-21swapper/320:29:183
26991994818,5cyclictest9-21ksoftirqd/023:10:150
134491480,5ptp4l0-21swapper/221:51:282
134491480,4ptp4l0-21swapper/123:15:031
134491480,4ptp4l0-21swapper/122:40:541
134491480,4ptp4l0-21swapper/122:15:151
134491480,4ptp4l0-21swapper/120:20:451
134491480,4ptp4l0-21swapper/020:41:040
134491480,4ptp4l0-21swapper/000:36:390
134491480,3ptp4l0-21swapper/120:59:491
134491480,3ptp4l0-21swapper/021:59:520
134491480,3ptp4l0-21swapper/021:44:500
134491480,3ptp4l0-21swapper/020:06:060
134491480,3ptp4l0-21swapper/019:32:500
2699499477,15cyclictest9070-21/usr/sbin/munin20:50:203
2699499477,15cyclictest9070-21/usr/sbin/munin20:50:203
2699499476,8cyclictest8454-21apt-get19:40:033
2699499476,6cyclictest0-21swapper/322:58:503
2699499476,14cyclictest4088-21/usr/sbin/munin19:30:243
134491470,9ptp4l0-21swapper/122:35:561
2699499469,6cyclictest24627-21users21:20:303
2699499469,6cyclictest24627-21users21:20:303
2699499467,7cyclictest13002-21ntpq23:15:223
2699199469,5cyclictest9-21ksoftirqd/023:40:230
26991994618,3cyclictest9-21ksoftirqd/021:35:270
26991994615,5cyclictest9-21ksoftirqd/022:49:360
26991994615,5cyclictest9-21ksoftirqd/022:10:010
134491460,4ptp4l0-21swapper/120:51:081
134491460,4ptp4l0-21swapper/120:51:081
134491460,3ptp4l241ktimersoftd/119:45:221
134491460,3ptp4l0-21swapper/222:09:512
134491460,3ptp4l0-21swapper/119:50:381
134491460,3ptp4l0-21swapper/023:56:430
2699499458,10cyclictest0-21swapper/300:22:223
2699499456,9cyclictest0-21swapper/319:59:293
26991994520,7cyclictest9-21ksoftirqd/022:00:260
134491450,4ptp4l0-21swapper/121:38:071
134491450,3ptp4l0-21swapper/123:20:161
134491450,3ptp4l0-21swapper/019:53:240
134491450,10ptp4l0-21swapper/221:09:532
2699499444,5cyclictest134491ptp4l19:50:223
26993994415,28cyclictest0-21swapper/200:06:582
134491440,8ptp4l33-21ksoftirqd/223:38:272
134491440,4ptp4l0-21swapper/222:12:272
134491440,11ptp4l25-21ksoftirqd/122:48:421
2699199439,5cyclictest9-21ksoftirqd/023:35:260
2699199439,4cyclictest9-21ksoftirqd/023:45:160
26991994315,4cyclictest9-21ksoftirqd/021:51:170
26991994314,4cyclictest9-21ksoftirqd/020:14:010
26991994312,6cyclictest9-21ksoftirqd/000:02:360
134491430,9ptp4l1301-21snmpd19:17:492
134491430,9ptp4l0-21swapper/220:43:072
134491430,8ptp4l0-21swapper/020:15:200
134491430,5ptp4l0-21swapper/019:05:280
134491430,4ptp4l1750-21apt-get19:25:122
134491430,4ptp4l0-21swapper/120:14:351
134491430,3ptp4l0-21swapper/221:56:022
134491430,10ptp4l0-21swapper/221:49:082
2699499426,13cyclictest18026-21memory00:35:213
2699499425,7cyclictest13696-21ps00:25:253
2699499425,7cyclictest13696-21ps00:25:253
2699499423,9cyclictest16001-21ls23:20:273
26991994236,3cyclictest9-21ksoftirqd/020:20:260
2699199421,3cyclictest121rcu_preempt23:19:590
26991994213,7cyclictest9-21ksoftirqd/022:23:380
134491420,9ptp4l0-21swapper/223:31:402
134491420,9ptp4l0-21swapper/222:01:402
134491420,9ptp4l0-21swapper/200:20:582
134491420,5ptp4l0-21swapper/119:10:211
134491420,5ptp4l0-21swapper/023:25:260
134491420,5ptp4l0-21swapper/019:10:200
134491420,4ptp4l6580-21ls23:00:281
134491420,4ptp4l27410-21apt-get20:20:132
134491420,4ptp4l1297-21kworker/u8:021:55:041
134491420,4ptp4l0-21swapper/320:20:343
134491420,4ptp4l0-21swapper/221:18:482
134491420,4ptp4l0-21swapper/123:49:161
134491420,4ptp4l0-21swapper/121:46:031
2699499418,11cyclictest18632-21sshd23:28:123
2699499415,5cyclictest0-21swapper/320:06:523
2699199419,3cyclictest9-21ksoftirqd/022:50:210
2699199415,3cyclictest121rcu_preempt21:15:260
26991994136,3cyclictest9-21ksoftirqd/019:20:010
26991994135,4cyclictest9-21ksoftirqd/020:57:160
26991994117,6cyclictest9-21ksoftirqd/020:03:380
26991994113,7cyclictest9-21ksoftirqd/019:40:130
26991994110,5cyclictest9-21ksoftirqd/022:25:260
134491410,9ptp4l0-21swapper/223:00:392
134491410,9ptp4l0-21swapper/221:14:412
134491410,9ptp4l0-21swapper/219:58:092
134491410,8ptp4l0-21swapper/222:46:312
134491410,8ptp4l0-21swapper/221:41:472
134491410,8ptp4l0-21swapper/221:36:472
134491410,5ptp4l9079-21ps00:15:241
134491410,5ptp4l3644-21meminfo22:55:190
134491410,5ptp4l29472-21/usr/sbin/munin23:50:252
134491410,5ptp4l0-21swapper/021:20:150
134491410,5ptp4l0-21swapper/021:20:150
134491410,4ptp4l25005-21apt-get21:25:023
134491410,4ptp4l0-21swapper/220:26:222
134491410,3ptp4l21383-21meminfo20:05:202
134491410,3ptp4l15991-21apt-get21:05:120
134491410,3ptp4l14783-21apt-get00:30:131
134491410,3ptp4l10625-21ls23:10:221
134491410,3ptp4l0-21swapper/223:18:532
134491410,10ptp4l0-21swapper/221:35:002
2699499406,6cyclictest0-21swapper/323:41:173
2699499405,5cyclictest0-21swapper/322:41:063
2699499402,9cyclictest29233-21ls23:50:203
26992994035,3cyclictest25-21ksoftirqd/120:00:001
134491400,6ptp4l0-21swapper/222:35:182
134491400,5ptp4l21015-21smartctl21:15:173
134491400,5ptp4l0-21swapper/022:10:120
134491400,4ptp4l9777-21irqstats19:40:191
134491400,4ptp4l9448-21/usr/sbin/munin22:00:303
134491400,4ptp4l8065-21cstates00:15:142
134491400,4ptp4l32273-21df_abs20:30:141
134491400,4ptp4l30643-21ntp_states19:15:221
134491400,4ptp4l0-21swapper/320:00:263
134491400,4ptp4l0-21swapper/300:15:143
134491400,4ptp4l0-21swapper/223:59:142
134491400,4ptp4l0-21swapper/220:55:142
134491400,4ptp4l0-21swapper/220:20:012
134491400,4ptp4l0-21swapper/219:45:242
134491400,4ptp4l0-21swapper/200:35:202
134491400,4ptp4l0-21swapper/121:50:151
134491400,3ptp4l9767-21df_inode22:00:161
134491400,3ptp4l510-21iostat21:40:201
134491400,3ptp4l23890-21iostat_ios22:30:181
134491400,3ptp4l0-21swapper/119:30:111
2699499395,5cyclictest0-21swapper/322:53:503
26992993934,3cyclictest25-21ksoftirqd/122:25:171
134491390,5ptp4l0-21swapper/223:45:252
134491390,5ptp4l0-21swapper/222:53:112
134491390,4ptp4l9160-21sshd23:07:372
134491390,4ptp4l27592-21iostat_ios19:10:183
134491390,4ptp4l24213-21ps21:20:262
134491390,4ptp4l24213-21ps21:20:262
134491390,4ptp4l0-21swapper/321:55:073
134491390,4ptp4l0-21swapper/321:00:263
134491390,4ptp4l0-21swapper/320:58:403
134491390,4ptp4l0-21swapper/320:10:263
134491390,4ptp4l0-21swapper/319:28:113
134491390,4ptp4l0-21swapper/300:10:323
134491390,4ptp4l0-21swapper/223:29:272
134491390,4ptp4l0-21swapper/222:25:202
134491390,4ptp4l0-21swapper/221:00:122
134491390,4ptp4l0-21swapper/220:51:212
134491390,4ptp4l0-21swapper/220:51:212
134491390,4ptp4l0-21swapper/220:35:172
134491390,4ptp4l0-21swapper/220:10:022
134491390,4ptp4l0-21swapper/219:51:272
134491390,4ptp4l0-21swapper/219:38:242
134491390,4ptp4l0-21swapper/219:32:292
134491390,4ptp4l0-21swapper/200:33:152
134491390,4ptp4l0-21swapper/200:27:112
134491390,4ptp4l0-21swapper/200:27:112
134491390,4ptp4l0-21swapper/200:10:332
134491390,4ptp4l0-21swapper/200:01:132
134491390,4ptp4l0-21swapper/123:54:581
134491390,4ptp4l0-21swapper/123:40:171
134491390,4ptp4l0-21swapper/122:20:251
134491390,4ptp4l0-21swapper/122:05:101
134491390,4ptp4l0-21swapper/121:25:241
134491390,4ptp4l0-21swapper/121:15:281
134491390,4ptp4l0-21swapper/120:28:261
134491390,4ptp4l0-21swapper/019:45:140
134491390,3ptp4l17389-21ls19:55:280
134491390,3ptp4l0-21swapper/021:45:060
2699499387,11cyclictest0-21swapper/322:35:553
134491380,5ptp4l2538-21irqrtprio20:35:191
134491380,4ptp4l0-21swapper/322:25:213
134491380,4ptp4l0-21swapper/322:08:113
134491380,4ptp4l0-21swapper/321:51:253
134491380,4ptp4l0-21swapper/300:31:593
134491380,4ptp4l0-21swapper/223:22:202
134491380,4ptp4l0-21swapper/222:55:432
134491380,4ptp4l0-21swapper/222:40:142
134491380,4ptp4l0-21swapper/222:32:142
134491380,4ptp4l0-21swapper/120:15:131
134491380,4ptp4l0-21swapper/120:03:301
134491380,4ptp4l0-21swapper/022:35:130
134491380,3ptp4l0-21swapper/319:49:563
134491380,3ptp4l0-21swapper/121:12:161
134491370,4ptp4l0-21swapper/323:02:323
134491370,4ptp4l0-21swapper/319:15:463
134491370,3ptp4l0-21swapper/323:08:153
134491370,3ptp4l0-21swapper/320:19:523
134491370,3ptp4l0-21swapper/121:20:091
134491370,3ptp4l0-21swapper/121:20:091
134491370,3ptp4l0-21swapper/120:05:161
134491360,4ptp4l0-21swapper/321:45:363
134491360,3ptp4l0-21swapper/321:41:163
134491360,3ptp4l0-21swapper/321:37:003
134491360,3ptp4l0-21swapper/121:00:251
134491350,4ptp4l0-21swapper/300:07:033
246442194,8sleep324658-21apt-get19:05:133
137891144,4phc2sys0-21swapper/219:05:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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