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2026-08-11 - 17:23
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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 Aug 11, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491680,9ptp4l0-21swapper/007:54:440
134491660,5ptp4l0-21swapper/009:15:020
1196399658,11cyclictest7962-21sendmail11:40:013
1196199640,33cyclictest23552-21chrt09:52:161
134491610,4ptp4l0-21swapper/008:19:440
1196399617,12cyclictest12454-21taskset11:47:543
134491600,4ptp4l0-21swapper/207:49:382
134491600,3ptp4l1301-21snmpd07:42:052
134491580,4ptp4l0-21swapper/309:50:183
134491580,4ptp4l0-21swapper/011:23:350
134491580,4ptp4l0-21swapper/010:04:020
134491580,4ptp4l0-21swapper/009:44:030
134491580,3ptp4l0-21swapper/209:05:162
134491580,3ptp4l0-21swapper/207:52:082
1196399589,14cyclictest29158-21irqrtprio08:55:203
111952580,6sleep30-21swapper/307:05:263
134491570,4ptp4l0-21swapper/208:55:542
134491570,4ptp4l0-21swapper/208:07:062
134491570,3ptp4l448-21dbus-daemon11:15:252
134491570,3ptp4l0-21swapper/212:20:292
11963995711,11cyclictest28582-21latency_hist11:15:003
1196199571,24cyclictest4577-21ntp_states10:20:221
1196199571,24cyclictest4577-21ntp_states10:20:221
134491560,7ptp4l0-21swapper/208:17:222
134491560,4ptp4l0-21swapper/212:35:012
134491560,4ptp4l0-21swapper/209:18:422
134491560,4ptp4l0-21swapper/207:10:502
134491560,3ptp4l0-21swapper/211:10:372
1196199560,31cyclictest8208-21apache211:49:141
134491550,4ptp4l0-21swapper/310:20:223
134491550,4ptp4l0-21swapper/310:20:223
134491550,4ptp4l0-21swapper/307:15:203
134491540,3ptp4l0-21swapper/207:35:142
134491540,2ptp4l0-21swapper/211:45:322
11963995410,8cyclictest11653-21ssh09:25:263
134491530,4ptp4l0-21swapper/210:52:202
134491530,4ptp4l0-21swapper/210:52:202
134491530,3ptp4l0-21swapper/210:37:482
1196399537,11cyclictest134691getstats08:35:113
134491520,4ptp4l0-21swapper/211:41:472
134491520,4ptp4l0-21swapper/209:41:012
134491520,4ptp4l0-21swapper/207:57:092
134491520,17ptp4l0-21swapper/109:04:301
134491510,4ptp4l0-21swapper/208:13:142
134491500,9ptp4l10473-21/usr/sbin/munin07:05:180
134491500,8ptp4l0-21swapper/209:31:032
134491500,4ptp4l0-21swapper/208:27:592
134491500,19ptp4l0-21swapper/112:24:291
1196399509,16cyclictest1397-21apt-get12:35:123
1196399509,15cyclictest9272-21python09:20:263
134491490,4ptp4l0-21swapper/111:38:201
134491490,4ptp4l0-21swapper/108:50:241
134491490,3ptp4l0-21swapper/207:20:532
1196399498,16cyclictest23716-21latency_hist08:45:003
1196199496,20cyclictest14593-21taskset10:42:481
1196199491,36cyclictest2318-21gnome-shell09:38:591
134491480,3ptp4l0-21swapper/211:22:062
1196199481,27cyclictest19336-21taskset07:25:131
134491470,4ptp4l0-21swapper/209:11:102
134491470,3ptp4l0-21swapper/210:15:542
11963994715,11cyclictest14566-21taskset11:50:313
134491460,7ptp4l10576-21meminfo07:05:191
134491460,4ptp4l0-21swapper/208:01:562
134491460,3ptp4l0-21swapper/211:31:412
134491460,3ptp4l0-21swapper/208:44:112
1196399469,13cyclictest21613-21/usr/sbin/munin07:30:263
1196399469,12cyclictest24819-21hwlatdetect12:15:173
134491450,9ptp4l0-21swapper/007:46:320
134491450,9ptp4l0-21swapper/007:10:150
134491450,5ptp4l0-21swapper/011:50:250
134491450,4ptp4l0-21swapper/210:42:362
134491450,4ptp4l0-21swapper/209:58:442
134491450,4ptp4l0-21swapper/208:20:372
134491450,3ptp4l0-21swapper/212:27:252
134491450,3ptp4l0-21swapper/208:30:272
134491450,11ptp4l0-21swapper/210:26:532
134491450,10ptp4l0-21swapper/209:38:072
134491450,10ptp4l0-21swapper/011:13:210
1196399459,8cyclictest134491ptp4l11:05:133
1196199450,32cyclictest16801-21taskset07:20:061
1196099450,1cyclictest0-21swapper/011:15:430
134491440,9ptp4l0-21swapper/011:08:140
134491440,9ptp4l0-21swapper/008:00:000
134491440,9ptp4l0-21swapper/007:28:380
134491440,5ptp4l31189-21apt-get10:10:122
134491440,4ptp4l17135-21apt-get09:40:113
134491440,4ptp4l1685-21hddtemp_smartct11:25:172
134491440,4ptp4l0-21swapper/211:02:202
134491440,3ptp4l0-21swapper/210:59:142
134491440,3ptp4l0-21swapper/209:29:472
134491440,12ptp4l0-21swapper/012:20:230
134491430,6ptp4l20641-21irqstats12:05:243
134491430,5ptp4l0-21swapper/108:55:131
134491430,4ptp4l14825-21apt-get09:35:150
134491430,4ptp4l0-21swapper/212:12:132
134491430,4ptp4l0-21swapper/210:03:282
134491430,4ptp4l0-21swapper/207:32:242
134491430,3ptp4l111rcuc/012:00:160
134491430,3ptp4l0-21swapper/212:33:492
134491420,9ptp4l0-21swapper/209:00:422
134491420,9ptp4l0-21swapper/009:59:030
134491420,5ptp4l0-21swapper/312:25:223
134491420,5ptp4l0-21swapper/309:45:213
134491420,5ptp4l0-21swapper/307:35:143
134491420,5ptp4l0-21swapper/011:00:170
134491420,5ptp4l0-21swapper/010:50:240
134491420,5ptp4l0-21swapper/010:50:240
134491420,5ptp4l0-21swapper/009:45:150
134491420,4ptp4l20897-21ls07:25:282
134491420,4ptp4l2048-21memory10:15:223
134491420,4ptp4l16196-21ls11:55:242
134491420,4ptp4l14059-21apt-get07:15:020
134491420,4ptp4l0-21swapper/311:21:013
134491420,4ptp4l0-21swapper/310:38:483
134491420,4ptp4l0-21swapper/210:23:582
134491420,4ptp4l0-21swapper/210:23:582
134491420,4ptp4l0-21swapper/210:07:572
134491420,4ptp4l0-21swapper/010:05:160
134491420,2ptp4l0-21swapper/311:00:573
134491420,10ptp4l0-21swapper/209:20:092
134491420,10ptp4l0-21swapper/010:27:560
1196399429,7cyclictest134491ptp4l10:08:423
11963994212,11cyclictest134691getstats08:49:183
134491410,5ptp4l0-21swapper/312:00:133
134491410,5ptp4l0-21swapper/308:10:123
134491410,5ptp4l0-21swapper/307:45:143
134491410,5ptp4l0-21swapper/307:40:223
134491410,5ptp4l0-21swapper/207:15:162
134491410,5ptp4l0-21swapper/007:36:030
134491410,4ptp4l26075-21apt-get10:00:033
134491410,4ptp4l19927-21diskstats10:55:153
134491410,4ptp4l17325-21apt-get10:50:133
134491410,4ptp4l17325-21apt-get10:50:133
134491410,4ptp4l16297-21ntp_states11:55:251
134491410,4ptp4l0-21swapper/011:28:110
134491410,4ptp4l0-21swapper/009:09:370
134491410,4ptp4l0-21swapper/008:26:030
134491410,4ptp4l0-21swapper/008:20:060
134491410,4ptp4l0-21swapper/007:40:280
134491410,4ptp4l0-21swapper/007:32:070
134491410,3ptp4l2881-21ls12:35:260
134491410,3ptp4l27293-21ntp_states08:50:232
134491410,3ptp4l17492-21apt-get12:00:142
134491410,3ptp4l12374-21apt-get08:20:113
134491410,3ptp4l0-21swapper/310:43:073
134491410,3ptp4l0-21swapper/307:58:443
1196399419,8cyclictest134491ptp4l11:32:383
1196399418,9cyclictest134491ptp4l09:10:003
1196399418,8cyclictest134691getstats12:31:343
1196399418,8cyclictest134491ptp4l12:23:253
1196399418,8cyclictest134491ptp4l09:01:103
11961994119,19cyclictest1859-21hwlatdetect12:35:161
134491400,5ptp4l0-21swapper/311:25:143
134491400,5ptp4l0-21swapper/308:25:233
134491400,5ptp4l0-21swapper/109:08:381
134491400,5ptp4l0-21swapper/012:30:170
134491400,5ptp4l0-21swapper/011:49:340
134491400,5ptp4l0-21swapper/011:37:480
134491400,5ptp4l0-21swapper/011:32:560
134491400,5ptp4l0-21swapper/009:00:160
134491400,4ptp4l9495-21ls09:20:270
134491400,4ptp4l29394-21/usr/sbin/munin11:15:193
134491400,4ptp4l20831-21ls07:25:283
134491400,4ptp4l11359-21memory10:35:221
134491400,4ptp4l0-21swapper/310:11:003
134491400,4ptp4l0-21swapper/309:35:183
134491400,4ptp4l0-21swapper/309:05:243
134491400,4ptp4l0-21swapper/308:50:263
134491400,4ptp4l0-21swapper/308:00:223
134491400,4ptp4l0-21swapper/212:15:212
134491400,4ptp4l0-21swapper/207:05:572
134491400,4ptp4l0-21swapper/112:02:331
134491400,4ptp4l0-21swapper/111:24:191
134491400,4ptp4l0-21swapper/111:10:241
134491400,4ptp4l0-21swapper/108:00:421
134491400,4ptp4l0-21swapper/012:05:280
134491400,4ptp4l0-21swapper/010:55:230
134491400,4ptp4l0-21swapper/010:42:090
134491400,4ptp4l0-21swapper/010:30:260
134491400,4ptp4l0-21swapper/010:20:210
134491400,4ptp4l0-21swapper/010:20:200
134491400,4ptp4l0-21swapper/010:15:380
134491400,4ptp4l0-21swapper/010:10:570
134491400,4ptp4l0-21swapper/009:30:170
134491400,4ptp4l0-21swapper/009:28:180
134491400,4ptp4l0-21swapper/009:10:500
134491400,4ptp4l0-21swapper/008:57:240
134491400,4ptp4l0-21swapper/008:52:450
134491400,4ptp4l0-21swapper/008:43:100
134491400,4ptp4l0-21swapper/008:10:360
134491400,4ptp4l0-21swapper/008:00:050
134491400,4ptp4l0-21swapper/007:22:340
134491400,3ptp4l9149-21strings10:30:223
134491400,3ptp4l21731-21apt-get09:50:142
134491400,3ptp4l15162-21/usr/sbin/munin11:55:230
134491400,3ptp4l10998-21meminfo08:15:193
134491400,2ptp4l19250-21/usr/sbin/munin08:35:202
1196399409,7cyclictest137891phc2sys09:34:283
1196399409,7cyclictest134491ptp4l09:18:373
1196399408,9cyclictest137891phc2sys09:57:183
134491390,5ptp4l0-21swapper/307:20:123
134491390,5ptp4l0-21swapper/211:35:262
134491390,5ptp4l0-21swapper/110:10:141
134491390,4ptp4l0-21swapper/311:58:513
134491390,4ptp4l0-21swapper/311:40:223
134491390,4ptp4l0-21swapper/310:27:173
134491390,4ptp4l0-21swapper/308:05:383
134491390,4ptp4l0-21swapper/307:10:163
134491390,4ptp4l0-21swapper/211:05:202
134491390,4ptp4l0-21swapper/111:30:361
134491390,4ptp4l0-21swapper/111:00:511
134491390,4ptp4l0-21swapper/110:59:361
134491390,4ptp4l0-21swapper/109:32:391
134491390,4ptp4l0-21swapper/108:22:471
134491390,4ptp4l0-21swapper/107:40:581
134491390,4ptp4l0-21swapper/012:13:130
134491390,4ptp4l0-21swapper/011:40:010
134491390,4ptp4l0-21swapper/010:35:200
134491390,4ptp4l0-21swapper/008:46:370
134491390,4ptp4l0-21swapper/008:36:570
134491390,4ptp4l0-21swapper/008:30:230
134491390,4ptp4l0-21swapper/008:05:160
134491390,3ptp4l0-21swapper/307:50:113
134491390,3ptp4l0-21swapper/212:07:172
134491390,3ptp4l0-21swapper/210:30:592
134491390,3ptp4l0-21swapper/010:45:300
134491380,5ptp4l0-21swapper/111:09:441
134491380,4ptp4l0-21swapper/312:10:123
134491380,4ptp4l0-21swapper/211:50:132
134491380,4ptp4l0-21swapper/210:45:262
134491380,4ptp4l0-21swapper/208:45:282
134491380,4ptp4l0-21swapper/112:30:421
134491380,4ptp4l0-21swapper/111:41:591
134491380,4ptp4l0-21swapper/111:17:051
134491380,4ptp4l0-21swapper/109:45:081
134491380,4ptp4l0-21swapper/109:14:531
134491380,4ptp4l0-21swapper/108:35:301
134491380,4ptp4l0-21swapper/108:26:111
134491380,4ptp4l0-21swapper/108:10:001
134491380,4ptp4l0-21swapper/108:07:101
134491380,4ptp4l0-21swapper/107:59:561
134491380,4ptp4l0-21swapper/012:25:220
134491380,4ptp4l0-21swapper/009:50:010
134491380,3ptp4l0-21swapper/310:45:263
134491380,3ptp4l0-21swapper/308:32:133
134491380,3ptp4l0-21swapper/209:45:212
134491380,3ptp4l0-21swapper/110:04:211
134491380,3ptp4l0-21swapper/108:47:321
134491380,3ptp4l0-21swapper/107:36:161
134491380,3ptp4l0-21swapper/107:30:341
134491370,4ptp4l2497-21phc2sys-jitter11:25:261
134491370,4ptp4l0-21swapper/107:15:271
134491370,3ptp4l0-21swapper/112:07:021
134491370,3ptp4l0-21swapper/110:29:421
134491370,3ptp4l0-21swapper/109:41:121
134491370,3ptp4l0-21swapper/109:20:301
134491370,3ptp4l0-21swapper/108:32:001
134491370,3ptp4l0-21swapper/107:50:411
134491370,3ptp4l0-21swapper/012:15:290
11961993732,3cyclictest25-21ksoftirqd/108:18:281
1196199370,23cyclictest29180-21fschecks_count10:05:131
134491360,4ptp4l0-21swapper/112:26:081
134491360,4ptp4l0-21swapper/110:17:121
134491360,4ptp4l0-21swapper/108:41:201
134491360,3ptp4l0-21swapper/112:19:421
134491360,3ptp4l0-21swapper/112:10:341
134491360,3ptp4l0-21swapper/107:49:341
134491360,3ptp4l0-21swapper/107:13:171
134491350,4ptp4l0-21swapper/109:29:411
134491350,3ptp4l0-21swapper/111:51:471
134491350,3ptp4l0-21swapper/110:33:501
134491320,4ptp4l0-21swapper/109:56:121
11961993225,5cyclictest25-21ksoftirqd/109:15:121
11961993125,4cyclictest25-21ksoftirqd/110:52:531
11961993125,4cyclictest25-21ksoftirqd/110:52:531
1196199300,27cyclictest16865-21chrt10:47:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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