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2026-03-24 - 08:28
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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 Mar 24, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1760021160,3sleep31396899cyclictest21:35:173
134491680,3ptp4l31325-21users23:10:260
134491670,5ptp4l0-21swapper/022:40:110
134491660,5ptp4l41-21ksoftirqd/323:00:013
13967996524,4cyclictest33-21ksoftirqd/221:00:192
13967996426,5cyclictest33-21ksoftirqd/220:39:592
13967996426,5cyclictest33-21ksoftirqd/220:39:592
134491640,19ptp4l4682-21irqstats22:15:200
134491640,19ptp4l4682-21irqstats22:15:190
134491620,4ptp4l4177-21meminfo21:05:211
163002610,3sleep0101ktimersoftd/021:30:280
13967996025,4cyclictest33-21ksoftirqd/223:48:052
13967996025,4cyclictest33-21ksoftirqd/219:59:192
134491590,4ptp4l0-21swapper/223:27:432
134491590,4ptp4l0-21swapper/122:05:151
13967995828,4cyclictest33-21ksoftirqd/221:20:002
134491580,4ptp4l0-21swapper/022:30:180
134491580,3ptp4l0-21swapper/323:45:243
134491580,3ptp4l0-21swapper/120:30:281
134491580,3ptp4l0-21swapper/100:10:151
13967995725,6cyclictest33-21ksoftirqd/220:25:002
13967995724,4cyclictest33-21ksoftirqd/220:42:042
134491570,5ptp4l0-21swapper/120:20:031
134491570,4ptp4l0-21swapper/221:50:002
134491570,3ptp4l0-21swapper/023:20:240
134491570,3ptp4l0-21swapper/023:20:240
134491570,3ptp4l0-21swapper/021:25:250
13968995610,44cyclictest0-21swapper/322:32:293
13967995624,4cyclictest33-21ksoftirqd/221:44:592
13967995623,6cyclictest33-21ksoftirqd/220:15:212
13967995623,5cyclictest33-21ksoftirqd/220:50:202
134491560,4ptp4l0-21swapper/020:27:350
13967995523,4cyclictest33-21ksoftirqd/219:11:442
13967995522,6cyclictest33-21ksoftirqd/220:15:012
134491550,4ptp4l0-21swapper/121:19:281
134491550,13ptp4l0-21swapper/019:35:170
13967995427,7cyclictest33-21ksoftirqd/223:11:542
13967995424,3cyclictest33-21ksoftirqd/220:55:182
13967995420,3cyclictest33-21ksoftirqd/219:41:112
13967995323,9cyclictest33-21ksoftirqd/223:41:192
13967995323,3cyclictest33-21ksoftirqd/222:25:002
13967995322,4cyclictest33-21ksoftirqd/200:05:092
13967995320,6cyclictest33-21ksoftirqd/220:45:162
13967995317,6cyclictest33-21ksoftirqd/223:50:232
134491530,4ptp4l0-21swapper/023:55:280
134491530,3ptp4l0-21swapper/121:38:221
13967995222,5cyclictest33-21ksoftirqd/222:44:232
13967995221,6cyclictest33-21ksoftirqd/220:00:232
13967995221,5cyclictest33-21ksoftirqd/221:10:532
13967995220,6cyclictest33-21ksoftirqd/220:05:162
13967995220,3cyclictest33-21ksoftirqd/222:39:322
13967995215,6cyclictest33-21ksoftirqd/222:20:002
13967995215,6cyclictest33-21ksoftirqd/222:19:592
134491520,4ptp4l0-21swapper/123:50:101
134491520,4ptp4l0-21swapper/123:05:231
134491520,4ptp4l0-21swapper/119:18:571
134491520,4ptp4l0-21swapper/000:09:520
134491520,3ptp4l0-21swapper/123:55:161
13967995123,4cyclictest33-21ksoftirqd/222:05:162
13967995121,3cyclictest33-21ksoftirqd/219:50:142
13967995120,3cyclictest33-21ksoftirqd/223:22:202
13967995120,3cyclictest33-21ksoftirqd/223:22:202
13967995118,4cyclictest33-21ksoftirqd/222:13:432
13967995117,5cyclictest33-21ksoftirqd/220:25:182
134491510,4ptp4l0-21swapper/122:37:321
134491510,3ptp4l0-21swapper/021:57:150
134491510,3ptp4l0-21swapper/021:00:030
134491510,3ptp4l0-21swapper/000:36:380
13967995020,5cyclictest33-21ksoftirqd/221:35:152
13967995019,4cyclictest33-21ksoftirqd/222:30:112
13967995018,3cyclictest33-21ksoftirqd/223:30:222
13967995015,4cyclictest33-21ksoftirqd/219:25:222
13967995015,4cyclictest33-21ksoftirqd/219:25:212
13967995013,8cyclictest33-21ksoftirqd/200:14:452
134491500,8ptp4l0-21swapper/019:20:150
134491500,4ptp4l0-21swapper/021:14:120
134491500,3ptp4l0-21swapper/119:25:411
134491500,3ptp4l0-21swapper/119:25:411
134491500,3ptp4l0-21swapper/021:09:270
134491500,3ptp4l0-21swapper/019:12:020
134491500,2ptp4l0-21swapper/020:42:340
13967994921,3cyclictest33-21ksoftirqd/220:30:272
13967994919,4cyclictest33-21ksoftirqd/200:25:152
13967994911,8cyclictest33-21ksoftirqd/200:39:402
134491490,4ptp4l0-21swapper/120:04:021
134491490,4ptp4l0-21swapper/020:15:020
134491490,4ptp4l0-21swapper/019:57:040
134491490,3ptp4l0-21swapper/120:45:221
134491490,3ptp4l0-21swapper/023:46:160
134491490,3ptp4l0-21swapper/022:01:270
134491490,3ptp4l0-21swapper/021:44:580
1396799488,14cyclictest33-21ksoftirqd/222:20:032
13967994812,6cyclictest33-21ksoftirqd/221:25:012
134491480,5ptp4l0-21swapper/219:06:142
134491480,4ptp4l0-21swapper/223:04:402
134491480,4ptp4l0-21swapper/023:37:050
134491480,3ptp4l0-21swapper/122:42:031
134491480,3ptp4l0-21swapper/122:02:391
134491480,3ptp4l0-21swapper/023:29:190
134491480,3ptp4l0-21swapper/021:46:590
134491480,3ptp4l0-21swapper/020:47:580
134491480,3ptp4l0-21swapper/019:32:330
134491480,3ptp4l0-21swapper/000:34:480
134491480,2ptp4l0-21swapper/022:58:070
13967994729,9cyclictest33-21ksoftirqd/219:25:002
1396799472,4cyclictest0-21swapper/219:37:522
1396799472,2cyclictest121rcu_preempt22:49:582
13967994719,3cyclictest33-21ksoftirqd/222:53:352
13967994719,3cyclictest33-21ksoftirqd/222:53:352
13967994716,9cyclictest33-21ksoftirqd/223:15:142
134491470,4ptp4l0-21swapper/019:54:300
134491470,3ptp4l0-21swapper/022:25:240
134491470,3ptp4l0-21swapper/021:51:100
134491470,3ptp4l0-21swapper/020:58:230
134491470,3ptp4l0-21swapper/020:50:360
134491470,3ptp4l0-21swapper/019:43:220
134491470,12ptp4l0-21swapper/120:05:211
1396799467,8cyclictest33-21ksoftirqd/219:49:442
13967994622,5cyclictest33-21ksoftirqd/221:49:472
13967994619,3cyclictest33-21ksoftirqd/221:25:152
1396799461,2cyclictest121rcu_preempt22:55:582
134491460,4ptp4l0-21swapper/121:25:191
134491460,4ptp4l0-21swapper/020:38:360
134491460,4ptp4l0-21swapper/020:38:360
134491460,3ptp4l0-21swapper/019:28:200
134491460,3ptp4l0-21swapper/019:28:200
134491460,3ptp4l0-21swapper/000:20:160
134491460,2ptp4l0-21swapper/300:17:293
13967994515,3cyclictest33-21ksoftirqd/221:55:192
13967994514,3cyclictest33-21ksoftirqd/222:01:112
13967994513,5cyclictest33-21ksoftirqd/223:35:172
1396799451,2cyclictest121rcu_preempt00:00:582
134491450,9ptp4l0-21swapper/322:45:143
134491450,5ptp4l0-21swapper/319:05:523
134491450,5ptp4l0-21swapper/023:15:260
134491450,3ptp4l0-21swapper/200:20:242
134491450,3ptp4l0-21swapper/022:48:250
134491450,3ptp4l0-21swapper/020:21:190
134491450,3ptp4l0-21swapper/019:18:340
13967994417,6cyclictest33-21ksoftirqd/221:32:332
13967994414,6cyclictest33-21ksoftirqd/223:09:012
13967994411,6cyclictest33-21ksoftirqd/221:05:152
13967994411,5cyclictest33-21ksoftirqd/200:15:262
134491440,5ptp4l31953-21apt-get23:15:133
134491440,5ptp4l19952-21python19:20:253
134491440,4ptp4l10347-21ls20:10:223
134491440,4ptp4l0-21swapper/022:09:020
134491440,3ptp4l0-21swapper/023:33:090
134491440,3ptp4l0-21swapper/021:24:060
134491440,3ptp4l0-21swapper/000:04:310
134491430,9ptp4l0-21swapper/023:41:450
134491430,5ptp4l0-21swapper/123:25:121
134491430,4ptp4l3176-21meminfo00:30:213
134491430,4ptp4l25440-21hddtemp_smartct23:00:160
134491430,4ptp4l24157-21apt-get21:50:121
134491430,3ptp4l0-21swapper/020:30:170
134491420,9ptp4l0-21swapper/223:56:162
134491420,6ptp4l0-21swapper/119:08:041
134491420,5ptp4l863-21/usr/sbin/munin00:25:241
134491420,5ptp4l21342-21memory22:50:200
134491420,5ptp4l21342-21memory22:50:200
134491420,5ptp4l0-21swapper/323:10:463
134491420,5ptp4l0-21swapper/020:00:160
134491420,4ptp4l5524-21apt-get21:10:141
134491420,4ptp4l31096-21ntp_states00:20:243
134491420,4ptp4l21648-21apt-get21:45:131
134491420,4ptp4l20598-21df22:50:141
134491420,4ptp4l20598-21df22:50:141
134491420,4ptp4l19660-21diskstats21:40:151
134491420,4ptp4l10707-21iostat21:20:181
134491420,4ptp4l0-21swapper/120:15:201
134491420,3ptp4l8207-21apt-get22:25:021
134491420,3ptp4l26517-21ls19:35:221
134491420,3ptp4l13992-21apt-get19:10:091
134491420,3ptp4l0-21swapper/100:39:571
134491420,3ptp4l0-21swapper/022:14:010
134491420,2ptp4l0-21swapper/023:53:570
134491410,5ptp4l8932-21ntp_states21:15:240
134491410,5ptp4l7576-21irqstats23:30:191
134491410,5ptp4l0-21swapper/300:00:113
134491410,5ptp4l0-21swapper/122:45:181
134491410,5ptp4l0-21swapper/019:08:350
134491410,4ptp4l6583-21hddtemp_smartct22:20:173
134491410,4ptp4l28908-21df_inode20:50:171
134491410,4ptp4l26679-21users23:00:291
134491410,4ptp4l2416-21apt-get19:55:121
134491410,4ptp4l0-21swapper/121:30:121
134491410,4ptp4l0-21swapper/119:52:561
134491410,4ptp4l0-21swapper/023:05:180
134491410,4ptp4l0-21swapper/019:45:200
134491410,4ptp4l0-21swapper/000:25:160
134491410,3ptp4l27600-21ls21:55:191
134491410,3ptp4l23799-21apt-get20:40:101
134491410,3ptp4l23440-21iostat_ios00:05:211
134491410,3ptp4l2318-21gnome-shell00:08:593
134491410,3ptp4l14429-21meminfo22:35:200
134491410,3ptp4l11352-21apt-get23:40:121
134491410,3ptp4l10897-21ls20:10:280
13967994034,3cyclictest33-21ksoftirqd/219:30:262
134491400,5ptp4l0-21swapper/320:06:223
134491400,5ptp4l0-21swapper/120:10:221
134491400,4ptp4l2451-21diskstats23:20:163
134491400,4ptp4l2451-21diskstats23:20:163
134491400,4ptp4l22496-1kworker/3:1H20:45:233
134491400,4ptp4l0-21swapper/323:04:253
134491400,4ptp4l0-21swapper/322:10:223
134491400,4ptp4l0-21swapper/319:31:303
134491400,4ptp4l0-21swapper/319:25:143
134491400,4ptp4l0-21swapper/319:25:143
134491400,4ptp4l0-21swapper/219:18:532
134491400,4ptp4l0-21swapper/200:31:352
134491400,4ptp4l0-21swapper/123:46:111
134491400,4ptp4l0-21swapper/122:15:181
134491400,4ptp4l0-21swapper/122:15:181
134491400,4ptp4l0-21swapper/121:00:241
134491400,4ptp4l0-21swapper/119:40:011
134491400,4ptp4l0-21swapper/100:00:191
134491400,4ptp4l0-21swapper/022:20:150
134491400,4ptp4l0-21swapper/021:35:230
134491400,4ptp4l0-21swapper/000:17:220
134491400,3ptp4l8146-21ntp_states20:05:220
134491400,3ptp4l6158-21apt-get22:20:131
134491400,3ptp4l27963-21df_inode00:15:171
134491400,3ptp4l21578-21df_inode20:35:171
134491400,3ptp4l21578-21df_inode20:35:171
134491400,3ptp4l11560-21df23:40:143
134491400,3ptp4l0-21swapper/120:55:591
134491400,3ptp4l0-21swapper/120:25:131
134491390,5ptp4l0-21swapper/320:55:193
134491390,5ptp4l0-21swapper/320:41:593
134491390,4ptp4l9379-21grep23:35:141
134491390,4ptp4l14554-21cut21:30:013
134491390,4ptp4l0-21swapper/323:10:003
134491390,4ptp4l0-21swapper/321:58:533
134491390,4ptp4l0-21swapper/321:46:203
134491390,4ptp4l0-21swapper/321:18:323
134491390,4ptp4l0-21swapper/321:10:323
134491390,4ptp4l0-21swapper/320:35:413
134491390,4ptp4l0-21swapper/320:35:413
134491390,4ptp4l0-21swapper/320:26:563
134491390,4ptp4l0-21swapper/319:59:423
134491390,4ptp4l0-21swapper/300:26:073
134491390,4ptp4l0-21swapper/300:14:403
134491390,4ptp4l0-21swapper/122:30:041
134491390,4ptp4l0-21swapper/122:10:231
134491390,4ptp4l0-21swapper/119:46:431
134491390,4ptp4l0-21swapper/119:20:171
134491390,4ptp4l0-21swapper/100:31:381
134491390,4ptp4l0-21swapper/100:20:261
134491390,3ptp4l0-21swapper/322:35:353
134491390,3ptp4l0-21swapper/320:24:003
134491390,3ptp4l0-21swapper/000:11:050
134491390,2ptp4l5948-21ls00:35:293
13968993817,18cyclictest4954-21sed20:00:153
134491380,5ptp4l0-21swapper/319:50:113
134491380,4ptp4l22586-21latency_hist22:55:013
134491380,4ptp4l22586-21latency_hist22:55:013
134491380,4ptp4l0-21swapper/323:25:453
134491380,4ptp4l0-21swapper/322:43:513
134491380,4ptp4l0-21swapper/322:26:253
134491380,4ptp4l0-21swapper/321:40:083
134491380,4ptp4l0-21swapper/321:34:013
134491380,4ptp4l0-21swapper/321:20:303
134491380,4ptp4l0-21swapper/321:01:043
134491380,4ptp4l0-21swapper/320:15:163
134491380,4ptp4l0-21swapper/319:38:563
134491380,4ptp4l0-21swapper/319:18:493
134491380,4ptp4l0-21swapper/319:10:223
134491380,4ptp4l0-21swapper/123:15:041
134491380,4ptp4l0-21swapper/119:30:201
134491380,3ptp4l0-21swapper/319:45:143
134491380,3ptp4l0-21swapper/123:10:051
134491380,3ptp4l0-21swapper/122:55:111
13968993715,20cyclictest32063-21if_enp4s022:05:163
134491370,4ptp4l0-21swapper/323:56:463
134491370,4ptp4l0-21swapper/323:54:453
134491370,4ptp4l0-21swapper/322:15:153
134491370,4ptp4l0-21swapper/322:15:153
134491370,4ptp4l0-21swapper/321:51:303
134491370,3ptp4l0-21swapper/321:05:003
134491370,3ptp4l0-21swapper/123:20:031
134491370,3ptp4l0-21swapper/123:20:031
134491360,4ptp4l0-21swapper/322:01:403
134491360,3ptp4l0-21swapper/323:35:583
134491360,3ptp4l0-21swapper/319:41:523
134491330,4ptp4l0-21swapper/320:31:283
134491300,3ptp4l0-21swapper/323:34:323
13968992915,12cyclictest22496-1kworker/3:1H20:52:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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