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2025-12-23 - 20:07
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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 Dec 23, 2025 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
173222840,4sleep20-21swapper/209:20:212
134491710,3ptp4l0-21swapper/210:02:032
134491710,22ptp4l6181-21apt-get07:50:100
55952670,6sleep12002799cyclictest10:05:211
50082640,6sleep32002999cyclictest07:45:233
217062610,5sleep30-21swapper/308:20:253
20028996027,6cyclictest33-21ksoftirqd/210:35:212
20028996023,4cyclictest33-21ksoftirqd/211:45:562
20028996022,8cyclictest33-21ksoftirqd/208:25:192
134491600,4ptp4l0-21swapper/211:35:012
134491580,4ptp4l0-21swapper/008:00:150
134491570,4ptp4l0-21swapper/211:17:172
20028995625,3cyclictest33-21ksoftirqd/209:55:222
152932560,4sleep20-21swapper/209:15:242
20028995523,5cyclictest33-21ksoftirqd/212:25:152
134491550,5ptp4l0-21swapper/011:24:370
134491550,3ptp4l0-21swapper/207:49:482
20028995424,5cyclictest33-21ksoftirqd/212:15:292
20028995422,5cyclictest33-21ksoftirqd/212:10:132
20028995420,6cyclictest33-21ksoftirqd/209:50:232
20028995420,6cyclictest33-21ksoftirqd/208:34:172
20028995323,8cyclictest33-21ksoftirqd/211:27:112
20028995323,5cyclictest33-21ksoftirqd/208:03:372
20028995320,6cyclictest33-21ksoftirqd/211:06:162
20028995320,4cyclictest33-21ksoftirqd/210:55:202
20028995319,4cyclictest33-21ksoftirqd/210:24:162
134491530,4ptp4l0-21swapper/210:51:082
134491530,4ptp4l0-21swapper/010:44:210
134491530,4ptp4l0-21swapper/007:17:280
20028995223,4cyclictest33-21ksoftirqd/208:08:272
20028995222,7cyclictest33-21ksoftirqd/208:51:052
20028995221,8cyclictest33-21ksoftirqd/211:12:462
20028995221,5cyclictest33-21ksoftirqd/211:30:272
20028995219,4cyclictest33-21ksoftirqd/207:20:262
20028995219,3cyclictest33-21ksoftirqd/207:30:222
20028995219,3cyclictest33-21ksoftirqd/207:30:222
134491520,5ptp4l0-21swapper/009:02:040
134491520,4ptp4l0-21swapper/010:25:110
134491520,3ptp4l0-21swapper/211:42:162
20028995124,5cyclictest33-21ksoftirqd/207:10:122
20028995120,5cyclictest33-21ksoftirqd/212:20:132
20028995120,4cyclictest33-21ksoftirqd/209:08:222
20028995119,4cyclictest33-21ksoftirqd/211:05:012
134491510,4ptp4l0-21swapper/210:42:522
134491510,4ptp4l0-21swapper/008:13:020
134491510,10ptp4l0-21swapper/309:59:273
2002899509,13cyclictest33-21ksoftirqd/212:31:212
20028995021,3cyclictest33-21ksoftirqd/210:30:142
20028995016,5cyclictest33-21ksoftirqd/209:25:282
20028995013,5cyclictest33-21ksoftirqd/207:55:222
20028995010,8cyclictest33-21ksoftirqd/208:43:112
134491500,4ptp4l0-21swapper/212:06:132
134491500,4ptp4l0-21swapper/211:20:362
134491500,4ptp4l0-21swapper/210:14:072
134491500,3ptp4l0-21swapper/209:42:392
134491500,3ptp4l0-21swapper/007:08:260
134491500,15ptp4l0-21swapper/008:45:250
20028994923,4cyclictest33-21ksoftirqd/209:14:282
134491490,4ptp4l401ktimersoftd/309:24:173
134491490,4ptp4l0-21swapper/208:35:032
134491490,4ptp4l0-21swapper/009:36:020
134491490,4ptp4l0-21swapper/008:42:200
134491490,3ptp4l0-21swapper/208:15:102
134491490,3ptp4l0-21swapper/208:13:562
20028994824,4cyclictest33-21ksoftirqd/210:46:262
20028994822,3cyclictest33-21ksoftirqd/207:45:002
20028994810,7cyclictest33-21ksoftirqd/212:00:512
134491480,4ptp4l0-21swapper/108:39:541
134491480,3ptp4l2002999cyclictest07:57:243
134491480,14ptp4l0-21swapper/108:27:361
134491480,11ptp4l0-21swapper/311:05:413
20028994719,3cyclictest33-21ksoftirqd/208:20:172
20028994713,5cyclictest33-21ksoftirqd/212:35:302
134491470,11ptp4l9-21ksoftirqd/011:36:540
20028994622,4cyclictest33-21ksoftirqd/209:48:132
20028994620,5cyclictest33-21ksoftirqd/207:50:202
20028994612,4cyclictest33-21ksoftirqd/210:20:012
134491460,4ptp4l0-21swapper/012:35:060
2002899458,5cyclictest33-21ksoftirqd/209:35:292
2002899453,7cyclictest0-21swapper/210:29:312
134491450,7ptp4l0-21swapper/110:00:121
134491450,5ptp4l0-21swapper/109:25:141
134491450,4ptp4l1301-21snmpd07:06:001
134491450,4ptp4l0-21swapper/209:31:562
2002899442,4cyclictest0-21swapper/211:52:152
134491440,9ptp4l870-21mailstats08:45:262
134491440,3ptp4l0-21swapper/312:15:303
134491440,3ptp4l0-21swapper/209:00:022
134491440,2ptp4l121rcu_preempt11:35:283
134491440,10ptp4l0-21swapper/311:20:263
134491440,10ptp4l0-21swapper/207:29:302
134491440,10ptp4l0-21swapper/007:55:390
20028994337,3cyclictest33-21ksoftirqd/207:35:122
134491430,9ptp4l0-21swapper/011:07:360
134491430,7ptp4l0-21swapper/207:05:162
134491430,5ptp4l0-21swapper/107:50:101
134491430,5ptp4l0-21swapper/012:10:280
134491430,4ptp4l25296-21iostat07:20:180
134491430,4ptp4l25093-21ls11:55:271
134491430,4ptp4l16630-21hddtemp_smartct09:20:150
134491430,4ptp4l0-21swapper/210:07:092
134491430,3ptp4l30032-21apt-get11:00:133
134491430,3ptp4l0-21swapper/211:59:172
134491430,10ptp4l0-21swapper/311:50:263
134491430,10ptp4l0-21swapper/310:47:573
134491430,10ptp4l0-21swapper/008:57:220
134491430,10ptp4l0-21swapper/008:37:210
20028994213,7cyclictest33-21ksoftirqd/207:19:592
134491420,5ptp4l20002-21cpufreq07:10:000
134491420,5ptp4l0-21swapper/310:40:273
134491420,5ptp4l0-21swapper/109:30:161
134491420,5ptp4l0-21swapper/011:50:180
134491420,5ptp4l0-21swapper/009:10:190
134491420,4ptp4l8146-21irqstats12:30:210
134491420,4ptp4l676-21ntp_states08:45:223
134491420,4ptp4l4317-21hddtemp_smartct07:45:160
134491420,4ptp4l2707-21hddtemp_smartct11:10:150
134491420,4ptp4l21233-21perl09:30:180
134491420,4ptp4l1743-21df07:40:120
134491420,4ptp4l0-21swapper/307:05:003
134491420,4ptp4l0-21swapper/011:15:350
134491410,9ptp4l0-21swapper/011:01:120
134491410,7ptp4l0-21swapper/311:30:003
134491410,6ptp4l0-21swapper/010:22:210
134491410,6ptp4l0-21swapper/010:03:060
134491410,5ptp4l23591-21irqstats08:25:203
134491410,5ptp4l1-21systemd10:50:280
134491410,5ptp4l0-21swapper/311:10:233
134491410,5ptp4l0-21swapper/309:45:193
134491410,5ptp4l0-21swapper/012:05:190
134491410,4ptp4l5073-21hddtemp_smartct10:05:170
134491410,4ptp4l27983-21df09:45:120
134491410,4ptp4l2002799cyclictest11:00:171
134491410,4ptp4l16143-21apt-get10:30:113
134491410,4ptp4l0-21swapper/011:49:080
134491410,4ptp4l0-21swapper/008:05:490
134491410,3ptp4l28613-21irqstats09:45:171
134491410,3ptp4l25425-21apt-get10:50:153
134491410,3ptp4l13097-21apt-get08:05:123
134491410,19ptp4l25-21ksoftirqd/109:14:211
20029994031,5cyclictest41-21ksoftirqd/307:10:153
134491400,6ptp4l0-21swapper/011:56:110
134491400,5ptp4l0-21swapper/312:20:153
134491400,5ptp4l0-21swapper/309:15:153
134491400,5ptp4l0-21swapper/010:15:180
134491400,5ptp4l0-21swapper/008:25:120
134491400,4ptp4l5213-21iostat_ios10:05:193
134491400,4ptp4l32185-21iostat07:35:171
134491400,4ptp4l24279-21ntp_states09:35:243
134491400,4ptp4l23470-21ntp_states07:15:203
134491400,4ptp4l14151-21df_inode10:25:153
134491400,4ptp4l11426-21apt-config09:10:003
134491400,4ptp4l0-21swapper/310:10:413
134491400,4ptp4l0-21swapper/309:30:173
134491400,4ptp4l0-21swapper/309:05:133
134491400,4ptp4l0-21swapper/108:20:201
134491400,4ptp4l0-21swapper/012:18:440
134491400,4ptp4l0-21swapper/010:48:500
134491400,4ptp4l0-21swapper/010:32:410
134491400,4ptp4l0-21swapper/009:07:030
134491400,4ptp4l0-21swapper/008:20:070
134491400,4ptp4l0-21swapper/007:36:060
134491400,3ptp4l9712-21df_inode11:25:150
134491400,3ptp4l4464-21apt-get08:55:122
134491400,3ptp4l4330-21apt-get11:15:013
134491400,3ptp4l4011-21apt-get08:55:013
134491400,3ptp4l30493-21hddtemp_smartct09:50:151
134491400,3ptp4l27010-21/usr/sbin/munin07:25:163
134491400,3ptp4l25396-21df_inode08:30:150
134491400,3ptp4l19731-21ntp_states11:45:233
134491400,3ptp4l1531-21apt-get07:40:103
134491400,1ptp4l0-21swapper/311:42:533
134491390,5ptp4l19415-21grep09:25:213
134491390,5ptp4l0-21swapper/312:35:133
134491390,5ptp4l0-21swapper/308:50:183
134491390,5ptp4l0-21swapper/307:35:123
134491390,5ptp4l0-21swapper/108:15:021
134491390,5ptp4l0-21swapper/009:41:510
134491390,4ptp4l25-21ksoftirqd/110:40:161
134491390,4ptp4l0-21swapper/312:29:253
134491390,4ptp4l0-21swapper/311:55:223
134491390,4ptp4l0-21swapper/309:00:243
134491390,4ptp4l0-21swapper/111:45:161
134491390,4ptp4l0-21swapper/109:58:511
134491390,4ptp4l0-21swapper/109:20:181
134491390,4ptp4l0-21swapper/109:18:121
134491390,4ptp4l0-21swapper/108:59:231
134491390,4ptp4l0-21swapper/012:25:460
134491390,4ptp4l0-21swapper/012:24:560
134491390,4ptp4l0-21swapper/012:02:470
134491390,4ptp4l0-21swapper/011:44:210
134491390,4ptp4l0-21swapper/011:33:230
134491390,4ptp4l0-21swapper/010:55:320
134491390,4ptp4l0-21swapper/010:37:270
134491390,4ptp4l0-21swapper/010:12:290
134491390,4ptp4l0-21swapper/009:56:150
134491390,4ptp4l0-21swapper/009:26:250
134491390,4ptp4l0-21swapper/009:15:260
134491390,4ptp4l0-21swapper/008:52:160
134491390,4ptp4l0-21swapper/007:33:480
134491390,4ptp4l0-21swapper/007:33:480
134491390,3ptp4l25-21ksoftirqd/108:45:241
134491390,3ptp4l18857-21memory08:15:200
134491390,3ptp4l0-21swapper/310:35:053
134491390,3ptp4l0-21swapper/009:50:270
134491390,1ptp4l0-21swapper/309:44:353
20027993833,3cyclictest25-21ksoftirqd/112:30:191
20027993833,3cyclictest25-21ksoftirqd/109:35:171
20027993822,4cyclictest25-21ksoftirqd/110:30:221
20026993831,4cyclictest9-21ksoftirqd/007:25:100
134491380,5ptp4l0-21swapper/308:35:063
134491380,4ptp4l3378-21needreboot10:00:213
134491380,4ptp4l0-21swapper/312:10:253
134491380,4ptp4l0-21swapper/312:05:123
134491380,4ptp4l0-21swapper/311:30:233
134491380,4ptp4l0-21swapper/310:20:253
134491380,4ptp4l0-21swapper/309:50:133
134491380,4ptp4l0-21swapper/308:30:163
134491380,4ptp4l0-21swapper/308:15:163
134491380,4ptp4l0-21swapper/308:10:223
134491380,4ptp4l0-21swapper/307:50:043
134491380,4ptp4l0-21swapper/307:32:503
134491380,4ptp4l0-21swapper/307:32:503
134491380,4ptp4l0-21swapper/307:22:223
134491380,4ptp4l0-21swapper/111:53:541
134491380,4ptp4l0-21swapper/111:05:121
134491380,4ptp4l0-21swapper/110:10:361
134491380,4ptp4l0-21swapper/109:40:211
134491380,4ptp4l0-21swapper/109:00:291
134491380,4ptp4l0-21swapper/108:04:311
134491380,3ptp4l0-21swapper/312:00:283
134491380,3ptp4l0-21swapper/308:40:143
134491380,3ptp4l0-21swapper/308:00:193
134491380,3ptp4l0-21swapper/112:37:421
134491380,3ptp4l0-21swapper/112:16:171
134491380,3ptp4l0-21swapper/111:17:031
134491380,3ptp4l0-21swapper/110:24:461
134491380,3ptp4l0-21swapper/109:07:451
134491380,3ptp4l0-21swapper/108:50:161
134491380,3ptp4l0-21swapper/108:11:391
134491380,2ptp4l0-21swapper/112:10:141
20027993733,3cyclictest25-21ksoftirqd/112:30:001
134491370,5ptp4l0-21swapper/310:15:123
134491370,4ptp4l0-21swapper/312:30:213
134491370,4ptp4l0-21swapper/310:55:133
134491370,4ptp4l0-21swapper/110:50:291
134491370,4ptp4l0-21swapper/108:40:221
134491370,4ptp4l0-21swapper/107:49:301
134491370,4ptp4l0-21swapper/107:25:151
134491370,3ptp4l0-21swapper/112:05:141
134491370,3ptp4l0-21swapper/112:02:301
134491370,3ptp4l0-21swapper/111:39:591
134491370,3ptp4l0-21swapper/111:34:501
134491370,3ptp4l0-21swapper/111:27:321
134491370,3ptp4l0-21swapper/111:20:281
134491370,3ptp4l0-21swapper/107:55:231
134491370,3ptp4l0-21swapper/107:22:361
134491370,3ptp4l0-21swapper/107:12:031
134491360,4ptp4l0-21swapper/108:05:421
134491360,3ptp4l0-21swapper/112:21:351
134491360,3ptp4l0-21swapper/110:45:581
134491360,3ptp4l0-21swapper/110:15:251
134491360,3ptp4l0-21swapper/108:30:151
20027993531,3cyclictest25-21ksoftirqd/110:40:001
134491350,2ptp4l0-21swapper/107:30:221
134491350,2ptp4l0-21swapper/107:30:221
20027993227,3cyclictest25-21ksoftirqd/107:40:231
20027993127,3cyclictest25-21ksoftirqd/110:59:591
20027993125,4cyclictest25-21ksoftirqd/111:15:001
134491300,4ptp4l0-21swapper/107:17:081
20027992823,3cyclictest25-21ksoftirqd/110:30:001
134491270,4ptp4l0-21swapper/111:42:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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