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2026-09-07 - 09:57
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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 Mon Sep 07, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1338521700,6sleep21332999cyclictest22:35:272
1630421460,4sleep31333099cyclictest22:44:233
244922770,6sleep30-21swapper/300:10:203
13327996910,16cyclictest0-21swapper/020:00:290
13327996814,11cyclictest1317-21runrttasks00:14:300
13327996813,10cyclictest1317-21runrttasks21:43:060
13327996710,11cyclictest1479-21ntpq23:20:230
13327996613,17cyclictest26614-21sed23:05:200
134491650,24ptp4l25-21ksoftirqd/122:54:261
13327996512,11cyclictest4543-21grep00:35:220
13327996410,11cyclictest29483-21irqrtprio00:20:190
13327996317,16cyclictest30513-21wc22:05:130
13327996315,11cyclictest1379-21taskset19:51:150
13327996217,41cyclictest18171-21ls22:45:270
13327996215,42cyclictest8686-21/usr/sbin/munin23:35:240
134491610,17ptp4l23197-21apt-get21:50:152
13327996117,9cyclictest24625-21seq19:31:480
13327996116,12cyclictest27006-21taskset20:48:280
13327996113,11cyclictest23297-21seq00:07:520
13327996112,7cyclictest26598-21ntp_states21:55:220
134491600,4ptp4l0-21swapper/121:15:151
134491590,4ptp4l0-21swapper/021:35:250
134491590,16ptp4l0-21swapper/122:00:141
134491590,16ptp4l0-21swapper/100:17:071
13327995918,10cyclictest32300-21seq23:17:170
13327995917,9cyclictest11662-21seq22:34:050
13327995914,10cyclictest11860-21taskset23:44:270
13327995911,15cyclictest4200-21cat23:25:270
134491580,5ptp4l0-21swapper/319:05:413
134491580,4ptp4l0-21swapper/319:25:043
134491580,4ptp4l0-21swapper/023:30:210
134491580,4ptp4l0-21swapper/021:05:170
13327995819,36cyclictest5672-21iostat_ios22:20:180
13327995811,15cyclictest15563-21tr23:50:240
134491570,5ptp4l0-21swapper/220:09:152
134491570,3ptp4l0-21swapper/223:07:512
13327995718,36cyclictest28741-21iostat_ios23:10:200
13327995718,17cyclictest19902-21seq20:31:040
13327995718,15cyclictest21126-21taskset00:04:220
13327995718,10cyclictest12973-21taskset20:16:320
13327995717,9cyclictest31648-21runrttasks19:48:160
13327995714,11cyclictest0-21swapper/000:18:580
134491560,4ptp4l0-21swapper/323:25:283
134491560,4ptp4l0-21swapper/220:20:582
134491560,3ptp4l0-21swapper/121:35:181
134691550,11getstats0-21swapper/221:48:472
134691550,11getstats0-21swapper/200:03:572
134491550,5ptp4l0-21swapper/219:08:362
134491550,4ptp4l16607-21apt-get22:45:132
1332799559,11cyclictest2548-21/usr/sbin/munin22:15:160
1332799559,11cyclictest2548-21/usr/sbin/munin22:15:160
13327995514,10cyclictest18805-21cron23:59:590
134691540,11getstats0-21swapper/221:21:252
134491540,4ptp4l0-21swapper/121:21:571
13327995413,11cyclictest1317-21runrttasks21:51:400
134691530,10getstats0-21swapper/222:04:492
134691530,10getstats0-21swapper/219:22:352
134491530,4ptp4l0-21swapper/123:28:261
134491530,4ptp4l0-21swapper/121:55:071
134491530,3ptp4l0-21swapper/200:08:242
134491530,2ptp4l0-21swapper/121:47:391
13327995319,31cyclictest7960-21iostat22:25:180
13327995316,10cyclictest6225-21runrttasks21:13:410
13327995315,12cyclictest15287-21runrttasks20:21:210
13327995311,39cyclictest6793-21/usr/sbin/munin21:15:150
134491520,4ptp4l0-21swapper/223:21:432
134491520,4ptp4l0-21swapper/121:27:361
134491520,3ptp4l0-21swapper/321:10:373
134491520,12ptp4l0-21swapper/319:58:333
134491520,12ptp4l0-21swapper/319:58:333
134491510,4ptp4l0-21swapper/223:51:472
134491510,4ptp4l0-21swapper/220:56:162
134491510,4ptp4l0-21swapper/220:11:512
134491510,4ptp4l0-21swapper/122:28:011
134491510,4ptp4l0-21swapper/120:35:521
134491510,3ptp4l0-21swapper/221:57:352
13327995111,8cyclictest21783-21ntpq21:45:230
13327995111,7cyclictest26227-21ntpq19:35:230
134491500,5ptp4l0-21swapper/100:29:011
134491500,4ptp4l0-21swapper/223:55:372
134491500,4ptp4l0-21swapper/223:31:012
134491500,4ptp4l0-21swapper/219:28:132
134491500,4ptp4l0-21swapper/219:17:032
134491500,4ptp4l0-21swapper/200:27:472
134491500,4ptp4l0-21swapper/119:59:511
134491500,4ptp4l0-21swapper/119:59:511
134491500,3ptp4l0-21swapper/122:37:051
13329995032,15cyclictest33-21ksoftirqd/200:15:112
1332799509,8cyclictest2305-21mailstats00:30:240
1332799509,34cyclictest0-21swapper/021:22:100
1332799508,6cyclictest2939-21meminfo19:55:200
1332799508,6cyclictest2939-21meminfo19:55:200
13327995017,10cyclictest13849-21taskset22:37:330
134491490,12ptp4l0-21swapper/322:25:153
134491480,4ptp4l0-21swapper/121:30:141
13327994814,10cyclictest17694-21runrttasks20:27:470
134491470,4ptp4l12699-21ls20:15:283
134491470,4ptp4l0-21swapper/223:45:162
134491470,4ptp4l0-21swapper/223:10:092
134491470,4ptp4l0-21swapper/123:36:251
134491470,13ptp4l25-21ksoftirqd/119:39:521
1332799478,7cyclictest17157-21ls19:15:270
13327994713,9cyclictest22475-21runrttasks20:39:310
134491460,4ptp4l2318-21gnome-shell22:30:582
134491460,4ptp4l0-21swapper/120:32:191
134491460,11ptp4l0-21swapper/220:30:262
1332799469,10cyclictest0-21swapper/022:13:120
134491450,9ptp4l0-21swapper/220:45:032
134491450,5ptp4l0-21swapper/323:20:153
134491450,4ptp4l25-21ksoftirqd/100:20:151
134491450,4ptp4l0-21swapper/100:01:381
134491450,10ptp4l0-21swapper/323:32:163
13329994532,3cyclictest33-21ksoftirqd/221:40:152
1332799457,7cyclictest31623-21iostat_ios00:25:190
13327994510,32cyclictest21718-21basename22:55:160
13327994510,32cyclictest21718-21basename22:55:160
134491440,9ptp4l0-21swapper/220:19:412
134491440,5ptp4l16376-21kworker/u8:100:35:063
134491440,3ptp4l0-21swapper/223:03:412
13329994439,3cyclictest33-21ksoftirqd/223:00:002
13329994439,3cyclictest33-21ksoftirqd/223:00:002
134491430,9ptp4l0-21swapper/223:38:072
134491430,9ptp4l0-21swapper/221:37:212
134491430,6ptp4l28376-21ps22:00:173
134491430,5ptp4l0-21swapper/120:19:281
134491430,4ptp4l4621-21apt-get22:20:032
134491430,4ptp4l3519-21memory22:15:202
134491430,4ptp4l3519-21memory22:15:202
134491430,4ptp4l20079-21ntp_states22:50:260
134491430,4ptp4l0-21swapper/200:36:502
134491430,4ptp4l0-21swapper/121:01:431
134491430,3ptp4l0-21swapper/300:17:123
134491430,3ptp4l0-21swapper/219:46:042
1333099430,7cyclictest30689-21meminfo19:45:193
13329994338,3cyclictest33-21ksoftirqd/220:00:002
13329994338,3cyclictest33-21ksoftirqd/220:00:002
134491420,9ptp4l0-21swapper/223:27:252
134491420,9ptp4l0-21swapper/221:14:412
134491420,5ptp4l0-21swapper/321:35:213
134491420,5ptp4l0-21swapper/320:20:213
134491420,5ptp4l0-21swapper/319:50:133
134491420,5ptp4l0-21swapper/220:00:252
134491420,5ptp4l0-21swapper/219:40:232
134491420,4ptp4l30795-21ntp_states20:55:233
134491420,4ptp4l2902-21memory21:05:211
134491420,4ptp4l28011-21iostat19:40:200
134491420,4ptp4l27380-21apt-get20:50:130
134491420,4ptp4l0-21swapper/322:15:213
134491420,4ptp4l0-21swapper/322:15:213
134491420,3ptp4l30315-21apt-get22:05:123
134491420,3ptp4l18906-21apt-get22:50:152
134491420,3ptp4l0-21swapper/300:05:293
134491420,10ptp4l0-21swapper/222:29:122
13330994238,2cyclictest27925-21cron23:10:003
134491410,5ptp4l0-21swapper/322:50:303
134491410,5ptp4l0-21swapper/320:50:233
134491410,5ptp4l0-21swapper/320:45:133
134491410,5ptp4l0-21swapper/319:10:013
134491410,5ptp4l0-21swapper/122:20:271
134491410,5ptp4l0-21swapper/122:15:191
134491410,5ptp4l0-21swapper/122:15:191
134491410,5ptp4l0-21swapper/121:10:191
134491410,5ptp4l0-21swapper/100:35:211
134491410,5ptp4l0-21swapper/023:45:140
134491410,4ptp4l6201-21memory23:30:211
134491410,4ptp4l29868-21apt-get22:05:012
134491410,4ptp4l23906-21ntp_states20:40:242
134491410,4ptp4l20842-21df_inode19:25:151
134491410,4ptp4l16077-21/usr/sbin/munin23:50:291
134491410,4ptp4l0-21swapper/322:33:073
134491410,4ptp4l0-21swapper/222:13:172
134491410,4ptp4l0-21swapper/220:50:202
134491410,4ptp4l0-21swapper/119:50:251
134491410,4ptp4l0-21swapper/119:20:211
134491410,4ptp4l0-21swapper/023:00:310
134491410,4ptp4l0-21swapper/021:30:270
134491410,3ptp4l30519-21irqstats20:55:191
134491410,3ptp4l2513-21/usr/sbin/munin21:05:182
134491410,3ptp4l21973-21ls20:35:272
134491410,3ptp4l13252-21apt-get21:30:013
134491410,3ptp4l11202-21apt-get21:25:130
13329994136,3cyclictest33-21ksoftirqd/200:15:012
13329994135,3cyclictest33-21ksoftirqd/200:35:002
134491400,5ptp4l31425-21/usr/sbin/munin00:25:173
134491400,5ptp4l0-21swapper/323:15:133
134491400,5ptp4l0-21swapper/322:10:253
134491400,5ptp4l0-21swapper/221:25:232
134491400,5ptp4l0-21swapper/221:00:222
134491400,5ptp4l0-21swapper/123:15:271
134491400,5ptp4l0-21swapper/123:05:191
134491400,5ptp4l0-21swapper/120:53:401
134491400,4ptp4l4296-21/usr/sbin/munin20:00:141
134491400,4ptp4l32595-21sshd22:10:101
134491400,4ptp4l28171-21apt-get23:10:133
134491400,4ptp4l17033-21wc20:25:243
134491400,4ptp4l0-21swapper/323:45:153
134491400,4ptp4l0-21swapper/323:43:153
134491400,4ptp4l0-21swapper/322:55:193
134491400,4ptp4l0-21swapper/322:55:193
134491400,4ptp4l0-21swapper/321:00:053
134491400,4ptp4l0-21swapper/320:10:293
134491400,4ptp4l0-21swapper/319:36:523
134491400,4ptp4l0-21swapper/222:42:132
134491400,4ptp4l0-21swapper/221:30:412
134491400,4ptp4l0-21swapper/221:19:072
134491400,4ptp4l0-21swapper/219:50:302
134491400,4ptp4l0-21swapper/219:35:262
134491400,4ptp4l0-21swapper/219:32:432
134491400,4ptp4l0-21swapper/219:13:082
134491400,4ptp4l0-21swapper/123:23:551
134491400,4ptp4l0-21swapper/120:25:311
134491400,4ptp4l0-21swapper/120:24:381
134491400,4ptp4l0-21swapper/100:30:141
134491400,4ptp4l0-21swapper/100:10:201
134491400,4ptp4l0-21swapper/022:00:230
134491400,4ptp4l0-21swapper/021:00:280
134491400,4ptp4l0-21swapper/020:56:360
134491400,4ptp4l0-21swapper/020:12:050
134491400,3ptp4l31416-21meminfo23:15:202
134491400,3ptp4l31238-21ls19:45:261
134491400,3ptp4l25486-21apt-get21:55:113
134491400,3ptp4l20686-21apt-get21:45:133
134491400,3ptp4l16761-21apt-get23:55:141
134491400,3ptp4l15657-21apt-get19:15:133
134491400,3ptp4l15502-21strings23:50:233
134491400,2ptp4l11509-21diskstats21:25:163
13329994035,3cyclictest33-21ksoftirqd/223:44:232
1332799409,5cyclictest134491ptp4l22:43:070
134491390,5ptp4l0-21swapper/322:48:493
134491390,5ptp4l0-21swapper/319:40:243
134491390,5ptp4l0-21swapper/120:43:091
134491390,5ptp4l0-21swapper/119:41:221
134491390,4ptp4l18328-21acpi21:40:131
134491390,4ptp4l0-21swapper/323:37:433
134491390,4ptp4l0-21swapper/323:00:133
134491390,4ptp4l0-21swapper/322:37:133
134491390,4ptp4l0-21swapper/322:20:223
134491390,4ptp4l0-21swapper/321:40:153
134491390,4ptp4l0-21swapper/321:20:553
134491390,4ptp4l0-21swapper/321:17:433
134491390,4ptp4l0-21swapper/321:05:193
134491390,4ptp4l0-21swapper/320:40:163
134491390,4ptp4l0-21swapper/320:36:133
134491390,4ptp4l0-21swapper/320:32:233
134491390,4ptp4l0-21swapper/320:05:053
134491390,4ptp4l0-21swapper/319:32:313
134491390,4ptp4l0-21swapper/319:20:383
134491390,4ptp4l0-21swapper/300:00:203
134491390,4ptp4l0-21swapper/200:21:592
134491390,4ptp4l0-21swapper/123:49:141
134491390,4ptp4l0-21swapper/123:40:161
134491390,4ptp4l0-21swapper/123:10:201
134491390,4ptp4l0-21swapper/123:00:471
134491390,4ptp4l0-21swapper/122:57:371
134491390,4ptp4l0-21swapper/122:57:361
134491390,4ptp4l0-21swapper/122:45:191
134491390,4ptp4l0-21swapper/122:40:251
134491390,4ptp4l0-21swapper/122:31:581
134491390,4ptp4l0-21swapper/122:05:281
134491390,4ptp4l0-21swapper/121:50:171
134491390,4ptp4l0-21swapper/120:46:301
134491390,4ptp4l0-21swapper/120:12:201
134491390,4ptp4l0-21swapper/020:42:380
134491390,4ptp4l0-21swapper/019:22:440
134491390,3ptp4l0-21swapper/323:55:263
134491390,3ptp4l0-21swapper/119:31:031
134491390,3ptp4l0-21swapper/020:05:290
134491390,3ptp4l0-21swapper/019:10:180
13329993920,17cyclictest33-21ksoftirqd/220:30:002
134491380,5ptp4l0-21swapper/019:25:130
134491380,4ptp4l0-21swapper/321:51:513
134491380,4ptp4l0-21swapper/320:00:183
134491380,4ptp4l0-21swapper/300:21:163
134491380,4ptp4l0-21swapper/119:15:151
134491380,4ptp4l0-21swapper/100:05:161
134491380,3ptp4l0-21swapper/300:30:193
134491380,3ptp4l0-21swapper/120:08:441
134491380,3ptp4l0-21swapper/119:13:441
46198300,4rtkit-daemon0-21swapper/019:08:410
122382224,11sleep10-21swapper/119:05:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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