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2025-12-06 - 21:08
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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 Sat Dec 06, 2025 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2525721650,6sleep12370799cyclictest09:30:191
194362760,4sleep219419-21apt-get08:10:012
133772610,6sleep02370699cyclictest10:10:300
2847191600,20ptp4l0-21swapper/307:07:323
2370899603,29cyclictest0-21swapper/212:15:262
2847191590,5ptp4l0-21swapper/108:20:191
2847191580,4ptp4l0-21swapper/110:15:151
2847191580,3ptp4l0-21swapper/108:45:251
2847191580,3ptp4l0-21swapper/108:41:091
2847191570,3ptp4l0-21swapper/012:25:250
2847191570,2ptp4l0-21swapper/011:44:180
2847191570,13ptp4l0-21swapper/107:49:211
2847191560,3ptp4l0-21swapper/112:05:171
2847191560,3ptp4l0-21swapper/110:55:011
2847191550,3ptp4l0-21swapper/112:30:071
2847191550,3ptp4l0-21swapper/112:23:171
2847191550,3ptp4l0-21swapper/111:00:231
2847191540,5ptp4l0-21swapper/311:54:463
2847191540,4ptp4l0-21swapper/107:34:401
2847191540,3ptp4l0-21swapper/109:15:281
2370899542,28cyclictest0-21swapper/209:20:402
2847191530,4ptp4l0-21swapper/108:50:331
2847191530,3ptp4l0-21swapper/107:23:541
2847191530,2ptp4l0-21swapper/012:36:540
2370899532,32cyclictest0-21swapper/207:30:142
2847191520,4ptp4l0-21swapper/311:58:193
2847191520,4ptp4l0-21swapper/108:05:231
2847191520,11ptp4l0-21swapper/107:25:171
2847191510,6ptp4l0-21swapper/207:05:172
2847191510,4ptp4l0-21swapper/108:19:591
2370899513,7cyclictest0-21swapper/211:05:272
2847191500,4ptp4l0-21swapper/312:34:113
2847191500,4ptp4l0-21swapper/109:46:221
2847191500,4ptp4l0-21swapper/109:08:421
2370899505,9cyclictest33-21ksoftirqd/210:44:592
2847191490,9ptp4l0-21swapper/012:09:270
2847191490,4ptp4l0-21swapper/111:30:301
2847191490,15ptp4l9-21ksoftirqd/011:13:250
2847191490,11ptp4l0-21swapper/010:49:370
23709994917,4cyclictest41-21ksoftirqd/310:19:593
2370899495,6cyclictest33-21ksoftirqd/210:10:182
2370899494,9cyclictest33-21ksoftirqd/210:05:012
23708994919,7cyclictest33-21ksoftirqd/210:35:172
2370899490,6cyclictest17900-21turbostat.cron09:15:002
2847191480,4ptp4l26802-21ntp_states10:40:240
2847191480,4ptp4l0-21swapper/211:51:222
2847191480,4ptp4l0-21swapper/112:12:161
2847191480,3ptp4l0-21swapper/107:36:001
2370899482,6cyclictest33-21ksoftirqd/212:05:252
2370899482,6cyclictest33-21ksoftirqd/210:20:262
2370899482,6cyclictest33-21ksoftirqd/208:40:012
23708994818,4cyclictest33-21ksoftirqd/209:50:162
2370899480,6cyclictest321ktimersoftd/210:05:192
2847191470,4ptp4l0-21swapper/307:48:103
2847191470,3ptp4l0-21swapper/210:25:042
2847191470,3ptp4l0-21swapper/111:55:281
2370899474,9cyclictest33-21ksoftirqd/208:25:242
2370899474,6cyclictest27797-21apt-get10:44:592
2370899472,8cyclictest0-21swapper/211:15:182
2370899472,7cyclictest0-21swapper/209:45:132
2370899472,7cyclictest0-21swapper/209:00:182
2370899471,6cyclictest33-21ksoftirqd/212:00:202
2370899470,7cyclictest209032chrt11:37:162
2847191460,3ptp4l0-21swapper/111:27:471
2847191460,3ptp4l0-21swapper/110:31:551
2847191460,3ptp4l0-21swapper/011:30:390
2370899466,5cyclictest33-21ksoftirqd/210:30:302
2370899465,8cyclictest33-21ksoftirqd/209:15:202
2370899465,7cyclictest15397-21mailstats10:15:262
2370899463,7cyclictest33-21ksoftirqd/208:40:322
2370899462,5cyclictest33-21ksoftirqd/209:44:592
2370899462,5cyclictest0-21swapper/209:30:332
2370899462,37cyclictest0-21swapper/212:20:172
2847191450,4ptp4l0-21swapper/109:42:521
2847191450,2ptp4l0-21swapper/009:36:260
2370999458,4cyclictest41-21ksoftirqd/311:15:003
23709994513,7cyclictest41-21ksoftirqd/309:45:003
2370899454,8cyclictest33-21ksoftirqd/211:35:012
2370899453,7cyclictest33-21ksoftirqd/211:25:002
2370899453,6cyclictest33-21ksoftirqd/208:10:252
2370899453,6cyclictest0-21swapper/211:10:162
2370899452,6cyclictest321ktimersoftd/209:35:252
23708994519,9cyclictest33-21ksoftirqd/209:26:152
23708994519,9cyclictest33-21ksoftirqd/209:26:152
2370899451,5cyclictest0-21swapper/210:55:302
2370899451,5cyclictest0-21swapper/209:55:142
2370899451,5cyclictest0-21swapper/209:55:142
2370899450,6cyclictest33-21ksoftirqd/212:35:412
2847191440,9ptp4l0-21swapper/211:55:532
2847191440,4ptp4l19059-21apt-get11:35:151
2847191440,18ptp4l0-21swapper/008:05:210
2370999441,2cyclictest121rcu_preempt09:32:263
2370999440,2cyclictest121rcu_preempt11:18:323
2370899445,9cyclictest33-21ksoftirqd/208:50:262
2370899445,10cyclictest33-21ksoftirqd/211:45:272
2370899443,7cyclictest0-21swapper/208:45:262
2370899443,6cyclictest33-21ksoftirqd/207:20:242
2370899443,5cyclictest0-21swapper/208:15:192
2370899442,6cyclictest0-21swapper/207:15:252
2370899442,27cyclictest0-21swapper/211:00:172
2370899440,6cyclictest0-21swapper/207:40:222
2847191430,9ptp4l0-21swapper/207:47:482
2847191430,4ptp4l26458-21hddtemp_smartct11:50:160
2847191430,4ptp4l25494-21meminfo08:20:200
2847191430,4ptp4l1778-21gnome-shell07:25:590
2847191430,4ptp4l10734-21iostat12:25:201
2847191430,4ptp4l0-21swapper/111:41:281
2847191430,4ptp4l0-21swapper/110:02:241
2847191430,4ptp4l0-21swapper/107:58:461
2847191430,3ptp4l0-21swapper/309:13:513
23709994334,3cyclictest41-21ksoftirqd/311:30:193
23709994315,4cyclictest41-21ksoftirqd/310:55:233
2370899431,11cyclictest0-21swapper/207:50:272
2370899430,6cyclictest33-21ksoftirqd/208:00:232
2370899430,6cyclictest0-21swapper/207:35:242
2370899430,5cyclictest14020-21if_enp1s009:05:192
2847191420,9ptp4l9-21ksoftirqd/008:37:140
2847191420,5ptp4l0-21swapper/010:00:210
2847191420,4ptp4l26018-21apt-get11:50:131
2847191420,4ptp4l12468-21apt-get12:30:150
2847191420,4ptp4l0-21swapper/011:46:180
2847191420,3ptp4l26050-21apt-get07:15:121
2847191420,3ptp4l0-21swapper/307:34:513
23709994231,3cyclictest41-21ksoftirqd/311:05:263
23709994230,5cyclictest41-21ksoftirqd/308:20:003
23709994218,3cyclictest41-21ksoftirqd/312:05:223
23709994212,3cyclictest41-21ksoftirqd/308:00:223
2370999420,3cyclictest121rcu_preempt08:22:563
2370899425,5cyclictest33-21ksoftirqd/212:30:162
2370899421,12cyclictest0-21swapper/211:40:232
2370899420,6cyclictest0-21swapper/207:10:462
2847191410,5ptp4l26035-21/usr/sbin/munin07:15:173
2847191410,5ptp4l0-21swapper/312:15:273
2847191410,5ptp4l0-21swapper/008:50:490
2847191410,4ptp4l7440-21apt-get07:45:020
2847191410,4ptp4l6306-21ntp_states11:05:241
2847191410,4ptp4l5799-21hddtemp_smartct07:40:160
2847191410,4ptp4l2385-21df_inode09:50:140
2847191410,4ptp4l14388-21diskstats10:15:150
2847191410,4ptp4l12202-21hddtemp_smartct10:10:161
2847191410,4ptp4l0-21swapper/307:50:223
2847191410,4ptp4l0-21swapper/112:15:291
2847191410,4ptp4l0-21swapper/010:34:110
2847191410,3ptp4l28382-21apt-get11:55:130
2847191410,3ptp4l24778-21ls10:35:273
2847191410,3ptp4l1778-21gnome-shell08:48:593
2370999419,8cyclictest41-21ksoftirqd/312:10:183
23709994132,3cyclictest41-21ksoftirqd/311:40:213
23709994128,4cyclictest41-21ksoftirqd/309:45:143
23709994128,10cyclictest41-21ksoftirqd/310:05:293
2370999412,3cyclictest121rcu_preempt08:30:173
23709994114,4cyclictest41-21ksoftirqd/307:25:263
23709994114,3cyclictest41-21ksoftirqd/310:14:513
23709994112,3cyclictest41-21ksoftirqd/312:30:003
23709994112,3cyclictest41-21ksoftirqd/311:20:183
2370999410,2cyclictest121rcu_preempt08:50:463
2370899414,5cyclictest33-21ksoftirqd/211:25:362
2370899412,2cyclictest121rcu_preempt10:55:002
2370899411,7cyclictest33-21ksoftirqd/207:55:182
2370899411,6cyclictest33-21ksoftirqd/212:25:172
2370899410,6cyclictest321ktimersoftd/212:10:172
2847191400,5ptp4l9-21ksoftirqd/012:10:180
2847191400,5ptp4l0-21swapper/007:24:030
2847191400,4ptp4l4914-21diskstats09:55:150
2847191400,4ptp4l4914-21diskstats09:55:150
2847191400,4ptp4l3356-21diskstats07:35:170
2847191400,4ptp4l21009-21ntp_states08:10:231
2847191400,4ptp4l12313-21/usr/sbin/munin09:00:241
2847191400,4ptp4l0-21swapper/311:45:093
2847191400,4ptp4l0-21swapper/309:35:313
2847191400,4ptp4l0-21swapper/308:13:113
2847191400,4ptp4l0-21swapper/207:25:082
2847191400,4ptp4l0-21swapper/111:15:231
2847191400,4ptp4l0-21swapper/110:05:281
2847191400,4ptp4l0-21swapper/108:55:191
2847191400,4ptp4l0-21swapper/108:30:241
2847191400,4ptp4l0-21swapper/107:44:131
2847191400,4ptp4l0-21swapper/107:10:101
2847191400,4ptp4l0-21swapper/012:22:330
2847191400,4ptp4l0-21swapper/012:17:240
2847191400,4ptp4l0-21swapper/011:35:170
2847191400,4ptp4l0-21swapper/011:21:240
2847191400,4ptp4l0-21swapper/011:05:140
2847191400,4ptp4l0-21swapper/011:02:140
2847191400,4ptp4l0-21swapper/010:50:160
2847191400,4ptp4l0-21swapper/010:05:260
2847191400,4ptp4l0-21swapper/009:41:240
2847191400,4ptp4l0-21swapper/009:32:160
2847191400,4ptp4l0-21swapper/009:00:170
2847191400,4ptp4l0-21swapper/008:55:240
2847191400,4ptp4l0-21swapper/008:43:530
2847191400,4ptp4l0-21swapper/008:31:050
2847191400,4ptp4l0-21swapper/007:57:500
2847191400,4ptp4l0-21swapper/007:50:080
2847191400,4ptp4l0-21swapper/007:12:520
2847191400,3ptp4l4595-21apt-get09:55:121
2847191400,3ptp4l4595-21apt-get09:55:121
2847191400,3ptp4l31035-21diskstats12:00:180
2847191400,3ptp4l29220-21memory10:45:211
2847191400,3ptp4l23338-21apt-get10:35:120
2847191400,3ptp4l23154-21meminfo08:15:220
2847191400,3ptp4l1505-21ls10:55:261
2847191400,3ptp4l10113-21diskstats11:15:160
2847191400,3ptp4l0-21swapper/310:42:463
2847191400,3ptp4l0-21swapper/112:02:241
2847191400,3ptp4l0-21swapper/109:29:151
2847191400,3ptp4l0-21swapper/109:29:151
2370999405,2cyclictest121rcu_preempt12:39:223
2370999403,2cyclictest121rcu_preempt08:55:143
2370999402,2cyclictest121rcu_preempt12:02:523
2370999402,2cyclictest121rcu_preempt11:02:233
23709994015,4cyclictest41-21ksoftirqd/307:10:173
2370999400,12cyclictest41-21ksoftirqd/309:59:163
2370999400,12cyclictest41-21ksoftirqd/309:59:153
2370899402,6cyclictest0-21swapper/208:20:252
2370899401,5cyclictest321ktimersoftd/208:55:152
2847191390,5ptp4l25679-21dpkg10:40:141
2847191390,4ptp4l5476-21ps08:45:270
2847191390,4ptp4l2647-21iostat09:50:181
2847191390,4ptp4l2370799cyclictest11:10:261
2847191390,4ptp4l0-21swapper/308:06:283
2847191390,4ptp4l0-21swapper/307:38:123
2847191390,4ptp4l0-21swapper/111:47:241
2847191390,4ptp4l0-21swapper/110:35:181
2847191390,4ptp4l0-21swapper/109:10:231
2847191390,4ptp4l0-21swapper/010:28:030
2847191390,4ptp4l0-21swapper/009:25:160
2847191390,4ptp4l0-21swapper/009:25:160
2847191390,4ptp4l0-21swapper/009:22:080
2847191390,4ptp4l0-21swapper/009:08:440
2847191390,4ptp4l0-21swapper/008:25:580
2847191390,4ptp4l0-21swapper/008:13:210
2847191390,4ptp4l0-21swapper/008:02:170
2847191390,4ptp4l0-21swapper/007:30:180
2847191390,4ptp4l0-21swapper/007:16:040
2847191390,3ptp4l28028-21ntp_states08:25:241
2847191390,3ptp4l27908-21hddtemp_smartct09:35:191
2847191390,3ptp4l19028-21df_inode10:25:161
2847191390,3ptp4l16984-21iostat_ios10:20:190
2847191390,3ptp4l16841-21hddtemp_smartct10:20:161
2847191390,3ptp4l14449-21/usr/sbin/munin11:25:280
2847191390,3ptp4l0-21swapper/112:35:451
2847191390,3ptp4l0-21swapper/111:20:511
2370999399,4cyclictest41-21ksoftirqd/308:35:013
23709993933,4cyclictest41-21ksoftirqd/307:20:123
23709993930,3cyclictest41-21ksoftirqd/307:40:253
2370999392,2cyclictest121rcu_preempt10:51:363
23709993916,4cyclictest41-21ksoftirqd/309:05:003
23709993915,3cyclictest41-21ksoftirqd/307:55:253
2370999391,3cyclictest121rcu_preempt11:29:313
23709993913,3cyclictest41-21ksoftirqd/309:05:173
2370999390,3cyclictest121rcu_preempt08:25:203
2370899391,6cyclictest0-21swapper/208:31:302
2847191380,4ptp4l0-21swapper/312:22:423
2847191380,4ptp4l0-21swapper/310:00:303
2847191380,4ptp4l0-21swapper/309:50:073
2847191380,4ptp4l0-21swapper/108:35:231
2847191380,4ptp4l0-21swapper/009:46:100
2847191380,4ptp4l0-21swapper/009:16:590
2847191380,4ptp4l0-21swapper/009:10:190
2847191380,3ptp4l0-21swapper/109:22:081
2847191380,3ptp4l0-21swapper/010:55:210
2370999383,2cyclictest121rcu_preempt09:24:543
2370999382,2cyclictest121rcu_preempt10:46:323
2370999382,2cyclictest121rcu_preempt10:28:113
2370999382,2cyclictest121rcu_preempt10:20:293
2847191370,4ptp4l0-21swapper/309:18:123
2847191370,4ptp4l0-21swapper/107:50:121
2847191370,3ptp4l0-21swapper/108:00:161
23709993717,3cyclictest41-21ksoftirqd/308:40:243
2370999371,6cyclictest121rcu_preempt10:32:173
2370999370,2cyclictest121rcu_preempt09:25:143
2370999370,2cyclictest121rcu_preempt09:25:143
2370999351,3cyclictest121rcu_preempt11:39:183
41798260,5rtkit-daemon0-21swapper/107:09:371
2288222218,1sleep00-21swapper/007:05:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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