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2026-04-03 - 08:50
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Fri Apr 03, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491660,5ptp4l28954-21apt-get23:55:123
247302590,3sleep124731-21grep22:35:211
134491590,5ptp4l0-21swapper/219:08:312
134491590,5ptp4l0-21swapper/100:35:141
134491570,3ptp4l0-21swapper/123:55:231
134491570,3ptp4l0-21swapper/123:05:241
134491560,4ptp4l0-21swapper/120:11:071
134491560,3ptp4l0-21swapper/322:35:123
134491560,3ptp4l0-21swapper/320:31:483
134491560,3ptp4l0-21swapper/022:35:190
134491550,5ptp4l0-21swapper/223:39:512
134491550,3ptp4l0-21swapper/223:32:302
134491540,4ptp4l0-21swapper/222:15:252
134491540,3ptp4l0-21swapper/121:38:061
134491540,3ptp4l0-21swapper/120:35:161
134491540,13ptp4l0-21swapper/323:20:283
261232530,4sleep00-21swapper/021:30:160
134491530,3ptp4l0-21swapper/120:59:571
134491530,3ptp4l0-21swapper/100:20:161
134491530,10ptp4l0-21swapper/121:06:591
252332520,2sleep024874-21cyclictest20:20:120
2487899524,3cyclictest0-21swapper/323:10:513
134491520,4ptp4l0-21swapper/122:12:371
134491520,4ptp4l0-21swapper/120:15:191
134491520,3ptp4l0-21swapper/122:00:201
134491520,3ptp4l0-21swapper/120:42:361
134491520,3ptp4l0-21swapper/120:32:141
134491520,19ptp4l9-21ksoftirqd/000:25:140
134491520,13ptp4l0-21swapper/221:30:002
2487899515,6cyclictest738-21mailstats19:25:243
134491510,4ptp4l0-21swapper/300:03:323
134491510,4ptp4l0-21swapper/222:48:462
134491510,4ptp4l0-21swapper/123:29:001
134491510,4ptp4l0-21swapper/122:53:211
134491510,4ptp4l0-21swapper/100:30:261
134491510,3ptp4l0-21swapper/123:11:101
134491510,3ptp4l0-21swapper/100:07:281
134491510,13ptp4l0-21swapper/221:13:182
134491510,11ptp4l0-21swapper/323:30:183
134491500,4ptp4l0-21swapper/323:41:533
134491500,4ptp4l0-21swapper/321:10:103
134491500,4ptp4l0-21swapper/121:17:141
134491500,4ptp4l0-21swapper/121:17:141
134491500,4ptp4l0-21swapper/120:50:121
134491500,3ptp4l17134-21diskstats22:20:152
24877994942,4cyclictest24469-21fschecks_count22:35:172
134491490,9ptp4l14149-21apt-get21:05:142
134491490,4ptp4l0-21swapper/322:45:433
134491490,4ptp4l0-21swapper/322:01:083
134491490,4ptp4l0-21swapper/123:35:511
134491490,3ptp4l0-21swapper/222:43:142
134491490,10ptp4l0-21swapper/119:50:131
134491480,4ptp4l0-21swapper/320:38:523
134491480,4ptp4l0-21swapper/220:58:352
134491480,3ptp4l0-21swapper/220:52:562
134491480,12ptp4l0-21swapper/322:15:403
134491480,10ptp4l0-21swapper/119:22:351
134491470,4ptp4l0-21swapper/223:13:522
134491470,4ptp4l0-21swapper/123:18:581
134491470,4ptp4l0-21swapper/023:31:270
134491470,3ptp4l0-21swapper/120:04:161
134491470,17ptp4l0-21swapper/100:14:171
134491470,11ptp4l0-21swapper/221:20:232
134491460,4ptp4l0-21swapper/121:55:351
134491460,3ptp4l0-21swapper/323:37:053
134491460,3ptp4l0-21swapper/123:21:261
134491460,3ptp4l0-21swapper/121:45:261
134491460,3ptp4l0-21swapper/000:22:540
2487899451,3cyclictest121rcu_preempt21:28:513
2487899451,2cyclictest121rcu_preempt00:36:013
134691450,10getstats0-21swapper/320:40:033
134491450,3ptp4l13151-21apt-get00:30:142
134491450,3ptp4l0-21swapper/221:59:472
134491450,3ptp4l0-21swapper/122:26:531
134491450,11ptp4l0-21swapper/121:31:161
134491440,4ptp4l11422-21ls23:15:190
134491440,3ptp4l0-21swapper/119:43:201
134491440,3ptp4l0-21swapper/119:36:231
134491440,3ptp4l0-21swapper/100:25:221
134491440,3ptp4l0-21swapper/100:00:181
134491440,3ptp4l0-21swapper/023:00:460
134491440,10ptp4l9-21ksoftirqd/021:41:280
134491440,10ptp4l0-21swapper/219:56:072
2487899435,5cyclictest41-21ksoftirqd/320:05:263
2487899431,2cyclictest121rcu_preempt19:55:233
24878994312,4cyclictest41-21ksoftirqd/300:15:273
134691430,11getstats0-21swapper/322:40:193
134491430,9ptp4l0-21swapper/223:18:012
134491430,9ptp4l0-21swapper/222:29:412
134491430,8ptp4l0-21swapper/319:05:203
134491430,6ptp4l0-21swapper/319:10:003
134491430,5ptp4l0-21swapper/322:10:123
134491430,4ptp4l31875-21apt-get19:25:111
134491430,4ptp4l0-21swapper/021:47:320
134491430,3ptp4l4726-21apt-get20:45:112
134491430,3ptp4l4726-21apt-get20:45:112
134491430,3ptp4l15655-21apt-get00:35:110
134491430,3ptp4l1372-21apt-get00:05:120
134491430,3ptp4l0-21swapper/223:45:262
134491430,3ptp4l0-21swapper/120:20:371
134491430,12ptp4l1317-21runrttasks21:31:212
2487899426,7cyclictest41-21ksoftirqd/319:40:003
2487899420,6cyclictest121rcu_preempt00:20:163
2487899420,2cyclictest121rcu_preempt20:52:033
134691420,11getstats0-21swapper/321:49:193
134691420,10getstats0-21swapper/322:56:413
134691420,10getstats0-21swapper/322:52:263
134691420,10getstats0-21swapper/322:30:003
134691420,10getstats0-21swapper/321:38:223
134491420,8ptp4l0-21swapper/321:40:243
134491420,5ptp4l9686-21/usr/sbin/munin22:05:243
134491420,5ptp4l0-21swapper/321:55:213
134491420,5ptp4l0-21swapper/220:10:232
134491420,5ptp4l0-21swapper/023:05:140
134491420,4ptp4l8135-21ntp_states20:50:210
134491420,4ptp4l29877-21irqstats22:45:200
134491420,4ptp4l18115-21users21:10:300
134491420,4ptp4l13907-21sshd22:10:400
134491420,4ptp4l0-21swapper/119:57:131
134491420,4ptp4l0-21swapper/023:25:250
134491420,4ptp4l0-21swapper/022:50:230
134491420,3ptp4l391rcuc/323:05:153
134491420,3ptp4l29734-21apt-get20:30:122
134491420,3ptp4l27719-21strings22:40:220
134491420,3ptp4l2318-21gnome-shell19:24:580
134491420,3ptp4l10648-21meminfo22:05:202
134491420,3ptp4l0-21swapper/200:06:342
134491420,3ptp4l0-21swapper/123:46:591
134491420,3ptp4l0-21swapper/021:00:100
134491420,3ptp4l0-21swapper/019:15:360
2487899419,8cyclictest41-21ksoftirqd/319:15:223
2487899416,3cyclictest121rcu_preempt22:21:503
24878994136,3cyclictest41-21ksoftirqd/319:48:583
24878994135,3cyclictest41-21ksoftirqd/319:41:583
24878994134,4cyclictest41-21ksoftirqd/300:25:593
2487899413,3cyclictest121rcu_preempt00:06:443
24878994133,3cyclictest41-21ksoftirqd/300:30:593
2487899411,2cyclictest121rcu_preempt23:52:443
134691410,9getstats0-21swapper/322:30:493
134691410,10getstats0-21swapper/321:30:213
134691410,10getstats0-21swapper/321:04:043
134691410,10getstats0-21swapper/320:20:173
134491410,5ptp4l6038-21/usr/sbin/munin20:45:241
134491410,5ptp4l6038-21/usr/sbin/munin20:45:241
134491410,5ptp4l30023-21sshd21:39:400
134491410,5ptp4l15456-21memory22:15:211
134491410,5ptp4l0-21swapper/320:45:123
134491410,5ptp4l0-21swapper/320:45:123
134491410,5ptp4l0-21swapper/223:05:122
134491410,5ptp4l0-21swapper/020:55:130
134491410,4ptp4l31030-21apt-get00:00:022
134491410,4ptp4l27448-21irqstats23:50:190
134491410,4ptp4l24502-21/usr/sbin/munin21:25:250
134491410,4ptp4l19901-21df23:35:140
134491410,4ptp4l13010-21df23:20:130
134491410,4ptp4l0-21swapper/200:26:062
134491410,4ptp4l0-21swapper/121:44:561
134491410,4ptp4l0-21swapper/023:55:220
134491410,3ptp4l31322-21apt-get22:50:082
134491410,3ptp4l30852-21ntp_states20:30:220
134491410,3ptp4l27382-21apt-get20:25:130
134491410,3ptp4l22580-21meminfo22:30:211
134491410,3ptp4l15100-21apt-get23:25:123
134491410,3ptp4l0-21swapper/223:03:202
24878994035,3cyclictest41-21ksoftirqd/320:20:003
24875994034,3cyclictest9-21ksoftirqd/022:30:000
134691400,10getstats0-21swapper/321:21:433
134491400,5ptp4l33-21ksoftirqd/200:10:142
134491400,5ptp4l0-21swapper/020:49:230
134491400,5ptp4l0-21swapper/020:49:230
134491400,4ptp4l6959-21awk19:40:160
134491400,4ptp4l32619-21apt-get21:45:122
134491400,4ptp4l27555-21memory23:50:201
134491400,4ptp4l26332-21awk19:10:250
134491400,4ptp4l25206-21df_inode19:10:131
134491400,4ptp4l2487599cyclictest19:35:160
134491400,4ptp4l13993-21irqstats00:30:210
134491400,4ptp4l12584-21memory21:00:192
134491400,4ptp4l0-21swapper/323:15:123
134491400,4ptp4l0-21swapper/321:15:143
134491400,4ptp4l0-21swapper/321:15:143
134491400,4ptp4l0-21swapper/222:59:302
134491400,4ptp4l0-21swapper/220:15:252
134491400,4ptp4l0-21swapper/219:40:342
134491400,4ptp4l0-21swapper/219:18:082
134491400,4ptp4l0-21swapper/122:40:231
134491400,4ptp4l0-21swapper/120:25:161
134491400,4ptp4l0-21swapper/120:05:151
134491400,4ptp4l0-21swapper/119:45:191
134491400,4ptp4l0-21swapper/119:15:271
134491400,4ptp4l0-21swapper/023:45:290
134491400,4ptp4l0-21swapper/022:55:110
134491400,4ptp4l0-21swapper/022:15:180
134491400,4ptp4l0-21swapper/022:09:060
134491400,4ptp4l0-21swapper/021:55:550
134491400,4ptp4l0-21swapper/021:18:490
134491400,4ptp4l0-21swapper/021:18:490
134491400,4ptp4l0-21swapper/020:35:380
134491400,4ptp4l0-21swapper/020:18:090
134491400,4ptp4l0-21swapper/020:10:140
134491400,4ptp4l0-21swapper/000:15:280
134491400,3ptp4l9303-21ntp_states23:10:230
134491400,3ptp4l7609-21perl22:00:152
134491400,3ptp4l3003-21hddtemp_smartct21:50:170
134491400,3ptp4l25430-21ntp_states23:45:243
134491400,3ptp4l22433-21hddtemp_smartct23:40:161
134491400,3ptp4l1896-21apt-get20:40:030
134491400,3ptp4l15409-21diskstats23:25:142
134491400,3ptp4l13108-21apt-get19:55:030
24878993933,3cyclictest41-21ksoftirqd/319:55:013
2487899390,2cyclictest121rcu_preempt21:53:373
134691390,9getstats0-21swapper/300:10:043
134491390,5ptp4l0-21swapper/321:05:133
134491390,4ptp4l23411-21sed23:40:270
134491390,4ptp4l0-21swapper/323:03:183
134491390,4ptp4l0-21swapper/320:56:103
134491390,4ptp4l0-21swapper/223:51:522
134491390,4ptp4l0-21swapper/223:41:412
134491390,4ptp4l0-21swapper/222:33:352
134491390,4ptp4l0-21swapper/221:38:182
134491390,4ptp4l0-21swapper/220:43:002
134491390,4ptp4l0-21swapper/220:21:132
134491390,4ptp4l0-21swapper/219:50:162
134491390,4ptp4l0-21swapper/219:45:372
134491390,4ptp4l0-21swapper/219:11:562
134491390,4ptp4l0-21swapper/200:35:062
134491390,4ptp4l0-21swapper/200:16:462
134491390,4ptp4l0-21swapper/123:30:241
134491390,4ptp4l0-21swapper/123:00:181
134491390,4ptp4l0-21swapper/122:57:501
134491390,4ptp4l0-21swapper/122:05:121
134491390,4ptp4l0-21swapper/100:15:231
134491390,4ptp4l0-21swapper/022:30:060
134491390,4ptp4l0-21swapper/022:23:150
134491390,4ptp4l0-21swapper/021:05:200
134491390,4ptp4l0-21swapper/019:50:160
134491390,4ptp4l0-21swapper/000:10:150
134491390,4ptp4l0-21swapper/000:02:390
134491390,3ptp4l0-21swapper/122:20:221
134491390,3ptp4l0-21swapper/022:02:320
134691380,9getstats0-21swapper/320:04:103
134491380,5ptp4l0-21swapper/121:20:121
134491380,4ptp4l0-21swapper/320:28:223
134491380,4ptp4l0-21swapper/320:14:303
134491380,4ptp4l0-21swapper/223:21:312
134491380,4ptp4l0-21swapper/222:10:162
134491380,4ptp4l0-21swapper/221:52:062
134491380,4ptp4l0-21swapper/221:40:482
134491380,4ptp4l0-21swapper/221:16:042
134491380,4ptp4l0-21swapper/221:16:042
134491380,4ptp4l0-21swapper/220:05:422
134491380,4ptp4l0-21swapper/220:00:042
134491380,4ptp4l0-21swapper/219:37:442
134491380,4ptp4l0-21swapper/219:27:462
134491380,4ptp4l0-21swapper/219:21:242
134491380,4ptp4l0-21swapper/200:24:122
134491380,4ptp4l0-21swapper/121:50:131
134491380,4ptp4l0-21swapper/121:03:261
134491380,4ptp4l0-21swapper/119:30:171
134491380,4ptp4l0-21swapper/020:00:120
134491380,4ptp4l0-21swapper/019:47:020
134491380,4ptp4l0-21swapper/019:32:420
134491380,4ptp4l0-21swapper/019:25:260
134491380,3ptp4l0-21swapper/223:55:522
134491380,3ptp4l0-21swapper/220:35:342
134491380,3ptp4l0-21swapper/220:25:082
134491380,3ptp4l0-21swapper/122:47:291
134491380,3ptp4l0-21swapper/020:05:120
134491370,3ptp4l0-21swapper/121:10:221
134491370,3ptp4l0-21swapper/021:20:220
24878993631,3cyclictest41-21ksoftirqd/319:20:183
134491360,3ptp4l0-21swapper/219:30:312
134491360,3ptp4l0-21swapper/121:25:211
24878993531,2cyclictest41-21ksoftirqd/319:35:003
236332215,9sleep10-21swapper/119:05:201
225212114,3sleep00-21swapper/019:05:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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