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2026-09-17 - 13:20
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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 Thu Sep 17, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3237021430,5sleep31099499cyclictest19:55:163
145502770,1sleep214551-21/usr/sbin/munin23:55:172
10991997031,6cyclictest9-21ksoftirqd/019:20:130
10991996930,11cyclictest9-21ksoftirqd/000:15:120
10991996729,9cyclictest9-21ksoftirqd/023:20:010
134491650,19ptp4l0-21swapper/220:20:272
134491640,5ptp4l0-21swapper/219:10:212
134491640,4ptp4l0-21swapper/321:40:253
10991996424,10cyclictest9-21ksoftirqd/022:20:010
134491630,4ptp4l0-21swapper/220:40:002
10991996326,11cyclictest9-21ksoftirqd/020:35:140
134491620,3ptp4l25767-21iostat20:50:182
10992996230,3cyclictest25-21ksoftirqd/123:30:241
10992996229,4cyclictest25-21ksoftirqd/122:50:251
10991996233,3cyclictest9-21ksoftirqd/021:10:160
10992996129,9cyclictest25-21ksoftirqd/121:45:161
10992996128,5cyclictest25-21ksoftirqd/120:50:201
134491600,5ptp4l0-21swapper/319:08:003
10992996033,4cyclictest25-21ksoftirqd/120:10:251
10992996014,8cyclictest25-21ksoftirqd/120:45:191
134491590,4ptp4l12388-21irqstats22:40:182
134491590,4ptp4l1099399cyclictest00:15:192
134491590,4ptp4l0-21swapper/319:14:083
134491590,4ptp4l0-21swapper/023:24:550
10992995926,6cyclictest25-21ksoftirqd/100:10:161
10992995918,6cyclictest25-21ksoftirqd/100:00:271
134491580,3ptp4l0-21swapper/222:02:222
134491580,3ptp4l0-21swapper/020:10:250
10992995823,3cyclictest25-21ksoftirqd/123:35:141
10992995816,3cyclictest25-21ksoftirqd/100:24:071
10991995826,10cyclictest9-21ksoftirqd/021:05:280
10991995812,6cyclictest9-21ksoftirqd/023:15:010
134491570,3ptp4l0-21swapper/223:49:132
10991995725,10cyclictest9-21ksoftirqd/023:50:170
10991995717,6cyclictest9-21ksoftirqd/023:59:030
134491560,4ptp4l0-21swapper/320:45:223
134491560,4ptp4l0-21swapper/222:10:192
1099299566,7cyclictest212-21systemd-journal21:45:001
1099299563,10cyclictest25-21ksoftirqd/121:50:181
1099199564,7cyclictest0-21swapper/021:25:250
134491550,4ptp4l0-21swapper/323:10:523
134491550,4ptp4l0-21swapper/220:05:252
134491550,3ptp4l20440-21apt-get19:30:122
134491550,3ptp4l0-21swapper/321:09:133
134491550,3ptp4l0-21swapper/222:49:212
1099299556,8cyclictest25-21ksoftirqd/120:30:241
1099299554,9cyclictest25-21ksoftirqd/123:00:251
10992995510,3cyclictest25-21ksoftirqd/119:49:431
134491540,3ptp4l0-21swapper/221:53:552
1099299543,9cyclictest25-21ksoftirqd/120:55:151
10992995428,4cyclictest25-21ksoftirqd/119:44:471
10992995425,4cyclictest25-21ksoftirqd/123:40:241
1099199545,7cyclictest0-21swapper/020:20:280
1099199544,9cyclictest9-21ksoftirqd/019:15:280
1099199543,9cyclictest9-21ksoftirqd/021:40:180
1099199542,9cyclictest9-21ksoftirqd/021:15:200
134491530,4ptp4l0-21swapper/323:09:523
134491530,4ptp4l0-21swapper/219:45:122
134491530,3ptp4l0-21swapper/322:33:573
1099299536,8cyclictest25-21ksoftirqd/123:20:241
1099299534,9cyclictest25-21ksoftirqd/121:15:011
1099299534,8cyclictest25-21ksoftirqd/119:10:181
10992995317,6cyclictest25-21ksoftirqd/122:13:371
134491520,4ptp4l0-21swapper/322:15:333
134491520,4ptp4l0-21swapper/321:59:193
134491520,4ptp4l0-21swapper/223:21:082
134491520,3ptp4l0-21swapper/221:01:032
1099299525,9cyclictest25-21ksoftirqd/121:15:231
1099299525,9cyclictest25-21ksoftirqd/120:25:251
1099299523,8cyclictest25-21ksoftirqd/119:20:181
1099299521,9cyclictest25-21ksoftirqd/100:35:271
1099199526,8cyclictest9-21ksoftirqd/019:30:170
1099199524,9cyclictest9-21ksoftirqd/023:45:000
1099199524,7cyclictest10081-21uname22:35:200
1099199523,8cyclictest9-21ksoftirqd/020:25:230
134491510,4ptp4l0-21swapper/300:16:253
134491510,4ptp4l0-21swapper/223:06:112
134491510,4ptp4l0-21swapper/019:46:200
134491510,12ptp4l0-21swapper/321:10:263
10993995118,3cyclictest33-21ksoftirqd/220:11:152
1099299514,10cyclictest25-21ksoftirqd/120:15:181
1099299513,9cyclictest25-21ksoftirqd/123:50:151
1099299513,9cyclictest25-21ksoftirqd/119:30:281
1099299511,10cyclictest25-21ksoftirqd/120:35:011
1099199514,7cyclictest0-21swapper/022:40:210
1099199513,7cyclictest16382-21irqrtprio20:30:180
10991995125,4cyclictest9-21ksoftirqd/000:27:560
10991995118,8cyclictest9-21ksoftirqd/022:24:100
1099199510,8cyclictest9-21ksoftirqd/000:10:140
134491500,4ptp4l0-21swapper/323:55:543
134491500,4ptp4l0-21swapper/323:47:083
134491500,4ptp4l0-21swapper/323:40:593
134491500,4ptp4l0-21swapper/322:11:443
134491500,4ptp4l0-21swapper/320:51:343
134491500,4ptp4l0-21swapper/023:35:570
134491500,4ptp4l0-21swapper/019:40:280
134491500,3ptp4l0-21swapper/300:34:003
1099299505,9cyclictest25-21ksoftirqd/122:40:141
1099299504,9cyclictest25-21ksoftirqd/120:05:181
1099299504,8cyclictest25-21ksoftirqd/122:20:271
1099299504,7cyclictest25-21ksoftirqd/122:15:231
10992995014,6cyclictest25-21ksoftirqd/121:24:341
10992995014,3cyclictest25-21ksoftirqd/122:34:421
1099299500,6cyclictest241ktimersoftd/120:00:241
1099299500,5cyclictest25-21ksoftirqd/120:20:281
1099199507,3cyclictest9-21ksoftirqd/000:37:000
1099199504,8cyclictest18194-21apt22:55:010
10991995032,8cyclictest9-21ksoftirqd/021:35:010
1099199503,10cyclictest9-21ksoftirqd/021:45:200
1099199502,8cyclictest9-21ksoftirqd/023:00:150
1099199502,8cyclictest9-21ksoftirqd/021:00:250
134491490,4ptp4l1919-21apt-get23:30:010
134491490,4ptp4l0-21swapper/323:29:573
134491490,4ptp4l0-21swapper/322:36:253
134491490,4ptp4l0-21swapper/322:28:313
134491490,4ptp4l0-21swapper/320:25:273
134491490,4ptp4l0-21swapper/320:10:183
134491490,4ptp4l0-21swapper/319:51:093
134491490,4ptp4l0-21swapper/222:24:482
1099299493,9cyclictest25-21ksoftirqd/121:55:271
10992994933,6cyclictest25-21ksoftirqd/122:05:251
1099299492,9cyclictest25-21ksoftirqd/123:30:011
10992994925,3cyclictest25-21ksoftirqd/123:56:071
10992994921,7cyclictest25-21ksoftirqd/119:35:141
1099299490,6cyclictest241ktimersoftd/122:00:161
10991994932,9cyclictest9-21ksoftirqd/022:35:010
1099199490,11cyclictest9-21ksoftirqd/019:35:140
134491480,4ptp4l0-21swapper/322:45:253
134491480,4ptp4l0-21swapper/320:07:023
134491480,4ptp4l0-21swapper/319:24:533
134491480,3ptp4l0-21swapper/322:06:363
134491480,3ptp4l0-21swapper/321:47:133
10992994837,3cyclictest25-21ksoftirqd/121:35:121
10992994830,9cyclictest25-21ksoftirqd/123:15:201
1099299482,8cyclictest25-21ksoftirqd/100:30:281
1099299482,10cyclictest25-21ksoftirqd/120:40:181
10992994817,6cyclictest25-21ksoftirqd/119:53:351
10992994817,6cyclictest25-21ksoftirqd/100:26:351
1099199487,8cyclictest9-21ksoftirqd/000:10:000
1099199483,9cyclictest9-21ksoftirqd/022:45:140
1099199483,8cyclictest9-21ksoftirqd/022:00:000
10991994834,4cyclictest9-21ksoftirqd/023:25:240
10991994830,7cyclictest9-21ksoftirqd/020:15:240
10991994818,10cyclictest9-21ksoftirqd/023:05:220
10991994816,6cyclictest9-21ksoftirqd/019:52:230
134491470,6ptp4l13316-21apt-get19:15:141
134491470,4ptp4l0-21swapper/322:58:343
134491470,4ptp4l0-21swapper/321:36:273
134491470,4ptp4l0-21swapper/220:01:012
10992994712,6cyclictest25-21ksoftirqd/123:11:291
1099199474,2cyclictest9-21ksoftirqd/021:20:240
10991994733,3cyclictest9-21ksoftirqd/022:05:180
10991994730,7cyclictest9-21ksoftirqd/022:05:000
10991994730,4cyclictest9-21ksoftirqd/021:35:130
1099199472,6cyclictest9-21ksoftirqd/020:50:230
10991994726,4cyclictest9-21ksoftirqd/022:10:170
1099199471,8cyclictest9-21ksoftirqd/020:05:150
10991994716,8cyclictest9-21ksoftirqd/019:29:560
10991994716,8cyclictest9-21ksoftirqd/019:29:560
134491460,4ptp4l0-21swapper/300:06:393
134491460,3ptp4l0-21swapper/321:22:023
10993994633,10cyclictest33-21ksoftirqd/222:55:202
1099299466,3cyclictest25-21ksoftirqd/121:10:011
1099299464,6cyclictest25-21ksoftirqd/100:05:251
1099299463,3cyclictest121rcu_preempt21:29:381
10992994617,3cyclictest25-21ksoftirqd/121:02:151
10992994616,6cyclictest25-21ksoftirqd/122:46:221
10992994610,5cyclictest25-21ksoftirqd/122:56:291
1099199465,8cyclictest9-21ksoftirqd/020:00:170
1099199465,3cyclictest121rcu_preempt20:45:250
1099199464,8cyclictest9-21ksoftirqd/019:55:220
1099199464,3cyclictest9-21ksoftirqd/000:20:250
1099199461,5cyclictest9-21ksoftirqd/021:50:210
134491450,4ptp4l0-21swapper/319:47:203
134491450,12ptp4l0-21swapper/321:00:253
1099299454,8cyclictest20125-21sed19:30:001
1099299454,8cyclictest20125-21sed19:29:591
10992994529,9cyclictest25-21ksoftirqd/123:05:131
1099299452,8cyclictest25-21ksoftirqd/122:35:141
10992994512,5cyclictest25-21ksoftirqd/122:28:341
10992994511,5cyclictest25-21ksoftirqd/119:58:451
10991994531,4cyclictest9-21ksoftirqd/000:30:280
1099199450,8cyclictest9-21ksoftirqd/023:45:130
134491440,5ptp4l0-21swapper/219:53:332
134491440,4ptp4l0-21swapper/200:00:042
10993994438,3cyclictest33-21ksoftirqd/221:40:002
1099299442,6cyclictest25-21ksoftirqd/100:15:131
10992994421,6cyclictest25-21ksoftirqd/123:46:071
1099199444,8cyclictest9-21ksoftirqd/020:55:270
1099199444,3cyclictest121rcu_preempt22:55:210
10991994431,4cyclictest9-21ksoftirqd/022:27:370
134491430,3ptp4l9775-21ntp_states19:05:231
134491430,3ptp4l32624-21apt-get00:35:132
134491430,3ptp4l0-21swapper/320:37:223
134491430,3ptp4l0-21swapper/221:56:202
134491430,3ptp4l0-21swapper/219:15:392
10993994338,3cyclictest33-21ksoftirqd/222:55:012
10993994338,3cyclictest33-21ksoftirqd/222:35:002
10992994314,3cyclictest25-21ksoftirqd/121:34:411
1099199433,3cyclictest9-21ksoftirqd/019:10:270
134491420,9ptp4l0-21swapper/220:47:402
134491420,6ptp4l10737-21ls19:10:010
134491420,5ptp4l0-21swapper/323:15:143
134491420,5ptp4l0-21swapper/223:25:252
134491420,4ptp4l31267-21ls00:30:212
134491420,4ptp4l20821-21df20:40:130
134491420,3ptp4l0-21swapper/221:23:122
1099399420,2cyclictest121rcu_preempt22:39:332
10991994228,5cyclictest9-21ksoftirqd/000:00:140
134491410,6ptp4l0-21swapper/219:08:032
134491410,4ptp4l4150-21users23:30:262
134491410,4ptp4l21404-21diskstats00:10:152
134491410,4ptp4l16515-21df00:00:143
134491410,4ptp4l11544-21apt-get22:40:103
134491410,3ptp4l15784-21apt-get20:30:122
10993994136,3cyclictest33-21ksoftirqd/223:55:012
134491400,5ptp4l30909-21memory23:20:193
134491400,5ptp4l10471-21sort21:25:252
134491400,5ptp4l0-21swapper/323:35:223
134491400,5ptp4l0-21swapper/319:25:133
134491400,5ptp4l0-21swapper/319:25:123
134491400,5ptp4l0-21swapper/221:05:142
134491400,4ptp4l28658-21ntp_states20:55:242
134491400,4ptp4l27804-21df_inode22:05:152
134491400,4ptp4l12063-21fschecks_count23:50:143
134491400,4ptp4l0-21swapper/300:20:133
134491400,4ptp4l0-21swapper/223:35:122
134491400,4ptp4l0-21swapper/219:38:422
134491400,3ptp4l7097-21apt-get23:40:122
134491400,3ptp4l4464-21apt-get21:15:132
134491400,3ptp4l3338-21ls20:00:263
134491400,3ptp4l32099-21apt-get22:15:162
134491400,3ptp4l25195-21apt-get22:00:113
134491400,3ptp4l22150-21ls21:50:263
134491400,3ptp4l15994-21apt-get21:40:142
134491400,3ptp4l13491-21apt-get20:25:112
134491400,3ptp4l0-21swapper/322:50:393
10993994036,2cyclictest33-21ksoftirqd/223:15:012
10993994035,3cyclictest33-21ksoftirqd/219:40:122
10993994035,3cyclictest33-21ksoftirqd/219:30:012
10993994035,3cyclictest33-21ksoftirqd/219:30:012
10993994034,3cyclictest33-21ksoftirqd/200:05:212
10993994029,9cyclictest33-21ksoftirqd/222:25:282
134491390,5ptp4l0-21swapper/320:20:123
134491390,5ptp4l0-21swapper/319:30:033
134491390,5ptp4l0-21swapper/220:16:262
134491390,5ptp4l0-21swapper/219:55:222
134491390,4ptp4l9819-21meminfo20:15:233
134491390,4ptp4l0-21swapper/323:30:183
134491390,4ptp4l0-21swapper/323:00:253
134491390,4ptp4l0-21swapper/321:25:223
134491390,4ptp4l0-21swapper/321:15:323
134491390,4ptp4l0-21swapper/320:30:163
134491390,4ptp4l0-21swapper/319:40:183
134491390,4ptp4l0-21swapper/300:35:183
134491390,4ptp4l0-21swapper/300:10:193
134491390,4ptp4l0-21swapper/223:00:172
134491390,4ptp4l0-21swapper/221:10:122
134491390,4ptp4l0-21swapper/200:20:072
134491390,3ptp4l29445-21ls00:25:252
134491390,3ptp4l2228-21apt-get22:20:123
134491390,3ptp4l18288-21apt-get21:45:102
134491390,3ptp4l15635-21apt-get19:20:122
134491390,16ptp4l0-21swapper/220:40:062
134491380,5ptp4l0-21swapper/320:55:083
134491380,4ptp4l0-21swapper/321:30:253
134491380,4ptp4l0-21swapper/320:40:533
134491380,4ptp4l0-21swapper/319:15:083
134491380,4ptp4l0-21swapper/300:25:113
134491380,4ptp4l0-21swapper/223:15:152
134491380,4ptp4l0-21swapper/221:32:372
134491380,3ptp4l0-21swapper/319:35:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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