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2026-06-04 - 03:17
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Thu Jun 04, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1930221620,5sleep048999cyclictest22:55:130
493996834,4cyclictest33-21ksoftirqd/222:00:162
493996733,10cyclictest33-21ksoftirqd/223:05:232
493996725,6cyclictest33-21ksoftirqd/221:30:012
493996534,9cyclictest33-21ksoftirqd/223:20:012
493996534,6cyclictest33-21ksoftirqd/222:05:242
493996532,4cyclictest33-21ksoftirqd/220:10:212
493996532,4cyclictest33-21ksoftirqd/220:10:202
493996531,6cyclictest33-21ksoftirqd/222:20:142
493996529,5cyclictest33-21ksoftirqd/222:55:012
134491650,4ptp4l28369-21diskstats22:05:150
493996432,3cyclictest33-21ksoftirqd/200:10:212
493996432,3cyclictest33-21ksoftirqd/200:10:212
493996330,5cyclictest33-21ksoftirqd/220:40:142
493996327,5cyclictest33-21ksoftirqd/200:05:172
206772630,7sleep20-21swapper/222:55:272
134491630,30ptp4l25-21ksoftirqd/122:35:161
493996229,4cyclictest33-21ksoftirqd/220:00:002
80802610,3sleep08083-21ntp_kernel_pll_19:30:170
493996134,6cyclictest33-21ksoftirqd/219:54:592
493996127,4cyclictest33-21ksoftirqd/222:40:012
493996122,6cyclictest33-21ksoftirqd/219:30:202
493996038,8cyclictest33-21ksoftirqd/219:40:152
493996034,6cyclictest33-21ksoftirqd/223:45:162
493996032,6cyclictest33-21ksoftirqd/200:30:272
493996031,3cyclictest33-21ksoftirqd/219:20:202
493996030,9cyclictest33-21ksoftirqd/200:25:272
493996029,5cyclictest33-21ksoftirqd/219:26:052
493995930,4cyclictest33-21ksoftirqd/219:10:132
493995928,5cyclictest33-21ksoftirqd/221:00:132
493995926,6cyclictest33-21ksoftirqd/222:10:142
493995926,10cyclictest33-21ksoftirqd/200:20:252
493995924,5cyclictest33-21ksoftirqd/200:15:242
493995924,5cyclictest33-21ksoftirqd/200:00:122
493995923,6cyclictest33-21ksoftirqd/223:20:192
493995832,3cyclictest33-21ksoftirqd/221:25:002
493995832,3cyclictest33-21ksoftirqd/221:25:002
493995827,5cyclictest33-21ksoftirqd/220:50:002
493995819,4cyclictest33-21ksoftirqd/221:05:542
134491580,4ptp4l0-21swapper/023:40:280
493995728,3cyclictest33-21ksoftirqd/223:30:152
493995721,5cyclictest33-21ksoftirqd/223:04:412
49099575,6cyclictest19268-21df22:55:131
134491570,4ptp4l0-21swapper/021:02:150
134491570,3ptp4l0-21swapper/319:22:023
493995631,6cyclictest33-21ksoftirqd/219:40:002
49399562,26cyclictest0-21swapper/222:28:502
493995622,5cyclictest33-21ksoftirqd/220:30:222
49099563,7cyclictest0-21swapper/122:40:271
134491560,3ptp4l0-21swapper/223:10:012
134491560,2ptp4l0-21swapper/321:36:283
493995528,9cyclictest33-21ksoftirqd/223:40:222
493995527,6cyclictest33-21ksoftirqd/220:50:182
493995527,6cyclictest33-21ksoftirqd/220:50:182
493995523,6cyclictest33-21ksoftirqd/222:19:592
49099554,6cyclictest25-21ksoftirqd/121:55:241
134491550,3ptp4l0-21swapper/121:10:211
134491550,3ptp4l0-21swapper/120:50:181
134491550,3ptp4l0-21swapper/120:50:181
134491550,3ptp4l0-21swapper/023:30:360
493995426,5cyclictest33-21ksoftirqd/221:30:162
493995426,10cyclictest33-21ksoftirqd/222:40:152
49099545,6cyclictest0-21swapper/100:25:131
134491540,3ptp4l0-21swapper/123:25:211
134491540,3ptp4l0-21swapper/023:13:200
493995329,6cyclictest33-21ksoftirqd/221:45:142
493995315,3cyclictest33-21ksoftirqd/221:19:032
49099537,6cyclictest0-21swapper/122:19:381
49099536,7cyclictest0-21swapper/119:20:131
49099534,13cyclictest0-21swapper/123:02:551
134491530,4ptp4l0-21swapper/000:05:010
134491530,20ptp4l0-21swapper/323:03:103
134491530,10ptp4l31976-21ls19:05:260
49399523,7cyclictest121rcu_preempt20:05:582
493995225,3cyclictest33-21ksoftirqd/223:35:162
493995222,5cyclictest33-21ksoftirqd/222:50:012
49099527,6cyclictest0-21swapper/100:18:251
49099527,5cyclictest0-21swapper/121:46:121
134691520,13getstats9-21ksoftirqd/019:44:530
134491520,5ptp4l0-21swapper/119:09:191
134491520,3ptp4l0-21swapper/022:49:090
134491520,17ptp4l0-21swapper/121:42:411
49399514,2cyclictest33-21ksoftirqd/220:39:592
49399513,6cyclictest33-21ksoftirqd/219:45:362
493995122,6cyclictest33-21ksoftirqd/223:50:262
493995121,4cyclictest33-21ksoftirqd/220:21:422
493995120,3cyclictest33-21ksoftirqd/200:38:182
49099512,5cyclictest21911-21cut21:50:191
490995120,8cyclictest25-21ksoftirqd/100:35:151
134491510,4ptp4l0-21swapper/023:03:590
134491510,4ptp4l0-21swapper/019:11:510
49399504,5cyclictest33-21ksoftirqd/220:27:182
49399502,5cyclictest33-21ksoftirqd/221:55:272
49399501,7cyclictest33-21ksoftirqd/221:54:022
49399500,8cyclictest15560-21sort20:00:002
49099503,6cyclictest25-21ksoftirqd/123:55:131
134691500,14getstats9-21ksoftirqd/020:51:490
134691500,14getstats9-21ksoftirqd/020:51:490
134491500,4ptp4l0-21swapper/119:40:081
134491500,4ptp4l0-21swapper/021:58:290
134491500,4ptp4l0-21swapper/000:02:570
134491500,11ptp4l2318-21gnome-shell19:05:592
49399497,2cyclictest33-21ksoftirqd/222:35:002
49399497,2cyclictest33-21ksoftirqd/222:35:002
49399493,2cyclictest33-21ksoftirqd/223:25:122
493994913,5cyclictest33-21ksoftirqd/221:40:122
49099497,6cyclictest0-21swapper/119:30:201
49099496,11cyclictest0-21swapper/120:31:311
49099492,6cyclictest0-21swapper/121:35:141
49099491,16cyclictest17080-21ntpq20:00:171
134491490,4ptp4l0-21swapper/120:43:081
134491490,4ptp4l0-21swapper/120:18:541
134491490,4ptp4l0-21swapper/020:00:410
134491490,3ptp4l0-21swapper/021:07:230
493994830,10cyclictest33-21ksoftirqd/221:35:172
493994819,6cyclictest33-21ksoftirqd/221:10:122
493994816,5cyclictest33-21ksoftirqd/219:15:012
49099487,6cyclictest0-21swapper/123:47:521
49099485,6cyclictest0-21swapper/120:38:571
49099483,6cyclictest25-21ksoftirqd/121:30:001
49099482,5cyclictest0-21swapper/122:08:351
134491480,4ptp4l0-21swapper/322:00:133
134491480,4ptp4l0-21swapper/121:16:031
134491480,4ptp4l0-21swapper/022:04:090
49399472,7cyclictest121rcu_preempt20:17:322
49099473,6cyclictest25-21ksoftirqd/123:25:011
49099470,7cyclictest25-21ksoftirqd/123:30:161
134491470,4ptp4l0-21swapper/022:50:290
134491470,4ptp4l0-21swapper/021:18:280
134491470,4ptp4l0-21swapper/020:29:140
134491470,3ptp4l0-21swapper/022:35:150
49099463,6cyclictest25-21ksoftirqd/123:10:241
49099463,6cyclictest0-21swapper/123:35:141
49099462,6cyclictest0-21swapper/100:05:231
49099460,7cyclictest25-21ksoftirqd/119:11:361
49099460,6cyclictest22071-21/usr/sbin/munin00:10:191
49099460,6cyclictest22071-21/usr/sbin/munin00:10:191
134691460,8getstats9-21ksoftirqd/023:17:210
134691460,11getstats0-21swapper/000:15:120
134691460,10getstats9-21ksoftirqd/020:56:140
134491460,6ptp4l24786-21python21:55:253
134491460,12ptp4l0-21swapper/022:15:170
49399452,7cyclictest33-21ksoftirqd/223:55:172
49399450,6cyclictest33-21ksoftirqd/220:58:352
49099454,4cyclictest23811-21/usr/sbin/munin23:05:221
134491450,4ptp4l0-21swapper/123:18:391
134491450,3ptp4l0-21swapper/123:40:321
134491450,3ptp4l0-21swapper/020:49:360
49099445,6cyclictest0-21swapper/120:14:521
49099445,6cyclictest0-21swapper/120:14:521
134691440,11getstats0-21swapper/022:14:410
134491440,9ptp4l0-21swapper/022:43:520
134491440,4ptp4l0-21swapper/021:48:250
134491440,10ptp4l0-21swapper/000:36:110
49099432,7cyclictest0-21swapper/100:34:341
49099432,5cyclictest25-21ksoftirqd/122:45:211
134491430,4ptp4l8952-21users22:30:270
134491430,4ptp4l8952-21users22:30:270
134491430,4ptp4l3997-21meminfo23:30:203
134491430,3ptp4l11943-21apt-get21:30:113
49099426,11cyclictest0-21swapper/122:33:061
49099426,11cyclictest0-21swapper/122:33:061
49099423,11cyclictest0-21swapper/119:59:491
489994237,2cyclictest3381-21irqrtprio22:20:190
134491420,5ptp4l0-21swapper/021:25:140
134491420,5ptp4l0-21swapper/021:20:250
134491420,5ptp4l0-21swapper/021:20:250
134491420,4ptp4l18909-21apt-get20:10:083
134491420,4ptp4l18909-21apt-get20:10:083
134491420,4ptp4l0-21swapper/321:25:233
134491420,3ptp4l26716-21apt-get00:20:133
134491420,3ptp4l24394-21apt-get00:15:133
49099415,11cyclictest0-21swapper/120:23:551
49099411,6cyclictest0-21swapper/122:50:231
489994135,4cyclictest25739-21kworker/0:123:39:520
134691410,11getstats0-21swapper/020:39:560
134691410,10getstats0-21swapper/019:47:250
134491410,5ptp4l15191-21hddtemp_smartct23:55:153
134491410,5ptp4l0-21swapper/300:10:273
134491410,5ptp4l0-21swapper/300:10:273
134491410,5ptp4l0-21swapper/300:05:233
134491410,5ptp4l0-21swapper/020:30:150
134491410,4ptp4l30793-21apt-get23:20:120
134491410,4ptp4l0-21swapper/021:34:520
134491410,4ptp4l0-21swapper/000:33:310
134491410,3ptp4l0-21swapper/020:08:310
494994014,3cyclictest28047-21/usr/sbin/munin22:05:203
134491400,9ptp4l0-21swapper/119:17:471
134491400,5ptp4l30426-21cron20:50:001
134491400,5ptp4l27701-21apt20:40:083
134491400,5ptp4l12355-21cat23:50:013
134491400,5ptp4l0-21swapper/122:00:191
134491400,5ptp4l0-21swapper/022:25:210
134491400,4ptp4l6559-21apt-get19:30:023
134491400,4ptp4l2779-21apt-get19:15:013
134491400,4ptp4l2387-21ntp_states00:35:233
134491400,4ptp4l0-21swapper/321:20:303
134491400,4ptp4l0-21swapper/321:20:303
134491400,4ptp4l0-21swapper/122:20:141
134491400,4ptp4l0-21swapper/023:59:250
134491400,4ptp4l0-21swapper/023:47:190
134491400,4ptp4l0-21swapper/020:18:330
134491400,4ptp4l0-21swapper/019:58:100
134491400,4ptp4l0-21swapper/019:21:580
134491400,4ptp4l0-21swapper/000:25:140
134491400,4ptp4l0-21swapper/000:20:280
134491400,3ptp4l25883-21ntp_states20:30:193
134491400,3ptp4l1421-21df21:00:101
134491400,3ptp4l0-21swapper/321:13:033
134491400,3ptp4l0-21swapper/020:41:510
134491390,5ptp4l0-21swapper/323:50:413
134491390,5ptp4l0-21swapper/323:40:113
134491390,4ptp4l19216-21diskstats20:10:120
134491390,4ptp4l19216-21diskstats20:10:120
134491390,4ptp4l15915-21apt-config20:00:003
134491390,4ptp4l1301-21snmpd19:58:493
134491390,4ptp4l1102-21hddtemp_smartct23:25:140
134491390,4ptp4l0-21swapper/323:25:163
134491390,4ptp4l0-21swapper/323:10:163
134491390,4ptp4l0-21swapper/322:10:033
134491390,4ptp4l0-21swapper/321:05:373
134491390,4ptp4l0-21swapper/319:51:023
134491390,4ptp4l0-21swapper/319:44:063
134491390,4ptp4l0-21swapper/319:11:583
134491390,4ptp4l0-21swapper/120:29:221
134491390,4ptp4l0-21swapper/120:08:301
134491390,4ptp4l0-21swapper/119:27:581
134491390,4ptp4l0-21swapper/100:00:231
134491390,4ptp4l0-21swapper/023:52:530
134491390,4ptp4l0-21swapper/023:06:070
134491390,4ptp4l0-21swapper/021:35:310
134491390,4ptp4l0-21swapper/019:50:580
134491390,4ptp4l0-21swapper/019:29:270
134491390,4ptp4l0-21swapper/000:11:320
134491390,4ptp4l0-21swapper/000:11:320
134491390,3ptp4l401ktimersoftd/319:05:393
134491390,3ptp4l0-21swapper/321:49:013
134491390,3ptp4l0-21swapper/321:40:253
494993831,4cyclictest41-21ksoftirqd/300:25:253
49099383,8cyclictest25-21ksoftirqd/100:20:141
134491380,4ptp4l21953-21cut21:50:193
134491380,4ptp4l12571-21cat23:50:131
134491380,4ptp4l0-21swapper/323:05:193
134491380,4ptp4l0-21swapper/322:35:073
134491380,4ptp4l0-21swapper/322:31:343
134491380,4ptp4l0-21swapper/322:31:343
134491380,4ptp4l0-21swapper/322:20:213
134491380,4ptp4l0-21swapper/320:59:003
134491380,4ptp4l0-21swapper/319:49:273
134491380,4ptp4l0-21swapper/319:37:223
134491380,4ptp4l0-21swapper/319:29:213
134491380,4ptp4l0-21swapper/300:31:433
134491380,4ptp4l0-21swapper/300:00:103
134491380,4ptp4l0-21swapper/122:25:141
134491380,4ptp4l0-21swapper/122:12:191
134491380,4ptp4l0-21swapper/121:30:171
134491380,4ptp4l0-21swapper/121:20:211
134491380,4ptp4l0-21swapper/121:20:211
134491380,4ptp4l0-21swapper/121:06:491
134491380,4ptp4l0-21swapper/119:50:181
134491380,4ptp4l0-21swapper/119:46:591
134491380,4ptp4l0-21swapper/119:36:391
134491380,4ptp4l0-21swapper/021:50:160
134491380,4ptp4l0-21swapper/021:44:100
134491380,4ptp4l0-21swapper/021:10:190
134491380,4ptp4l0-21swapper/019:36:300
134491380,3ptp4l0-21swapper/321:02:033
134491380,3ptp4l0-21swapper/020:23:460
134491380,3ptp4l0-21swapper/019:15:570
494993732,3cyclictest41-21ksoftirqd/320:45:423
134491370,4ptp4l0-21swapper/323:15:163
134491370,4ptp4l0-21swapper/322:45:303
134491370,4ptp4l0-21swapper/322:18:053
134491370,4ptp4l0-21swapper/320:25:123
134491370,4ptp4l0-21swapper/120:56:251
134491370,3ptp4l0-21swapper/323:37:373
134491370,3ptp4l0-21swapper/323:20:163
134491370,3ptp4l0-21swapper/322:55:243
134491370,3ptp4l0-21swapper/322:50:183
134491370,3ptp4l0-21swapper/321:16:283
134491370,3ptp4l0-21swapper/320:35:253
134491370,3ptp4l0-21swapper/320:05:043
134491360,4ptp4l0-21swapper/320:53:413
134491360,4ptp4l0-21swapper/320:53:413
134491360,3ptp4l0-21swapper/322:25:183
134491360,3ptp4l0-21swapper/320:21:453
134491350,3ptp4l0-21swapper/322:42:143
134491330,3ptp4l0-21swapper/320:19:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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