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2026-09-05 - 09:42
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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 Sat Sep 05, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
360621490,7sleep11446299cyclictest19:55:161
490921240,3sleep20-21swapper/200:35:202
1446499682,33cyclictest0-21swapper/320:00:163
1446499672,35cyclictest0-21swapper/319:45:193
134491670,4ptp4l0-21swapper/020:00:020
134491660,5ptp4l0-21swapper/022:40:130
134491650,20ptp4l26122-21users23:00:270
134491630,4ptp4l0-21swapper/020:48:150
134491620,4ptp4l0-21swapper/020:40:250
134491610,3ptp4l10948-21memory21:20:200
134491600,3ptp4l0-21swapper/000:20:140
14464995924,3cyclictest41-21ksoftirqd/323:00:173
134491590,4ptp4l0-21swapper/120:35:281
134491590,4ptp4l0-21swapper/019:21:280
134491590,3ptp4l21569-21ls00:00:270
134491590,3ptp4l0-21swapper/022:30:260
134491580,4ptp4l0-21swapper/222:15:042
134491580,4ptp4l0-21swapper/119:14:551
134491580,4ptp4l0-21swapper/100:30:141
1446499573,10cyclictest41-21ksoftirqd/323:55:153
134491570,4ptp4l0-21swapper/021:01:540
134491570,3ptp4l0-21swapper/121:26:191
134491570,3ptp4l0-21swapper/023:52:570
134491570,3ptp4l0-21swapper/022:35:160
1446499560,5cyclictest24598-21latency_hist00:10:013
1446499560,5cyclictest24598-21latency_hist00:10:003
1446399560,3cyclictest515-21switchtime23:15:252
1446399560,3cyclictest515-21switchtime23:15:252
134491560,4ptp4l0-21swapper/322:43:123
134491560,4ptp4l0-21swapper/023:55:390
1446499552,6cyclictest29220-21sendmail-msp00:20:003
134491550,4ptp4l0-21swapper/021:16:270
134491550,3ptp4l0-21swapper/023:20:090
1446499543,7cyclictest0-21swapper/321:05:163
1446499542,5cyclictest41-21ksoftirqd/322:45:263
1446499542,4cyclictest0-21swapper/320:05:243
134491540,4ptp4l0-21swapper/022:55:480
134491540,4ptp4l0-21swapper/022:14:550
134491540,4ptp4l0-21swapper/020:50:550
134491540,3ptp4l0-21swapper/023:49:110
134491540,3ptp4l0-21swapper/022:25:330
134491540,17ptp4l0-21swapper/021:37:300
1446499533,11cyclictest0-21swapper/323:24:503
1446499532,7cyclictest0-21swapper/323:25:253
134491530,4ptp4l0-21swapper/122:33:321
134491530,4ptp4l0-21swapper/021:44:130
134491530,3ptp4l0-21swapper/120:27:211
134491530,3ptp4l0-21swapper/023:28:170
134491530,3ptp4l0-21swapper/021:53:410
134491530,3ptp4l0-21swapper/020:21:340
134491530,3ptp4l0-21swapper/020:06:470
1446499525,2cyclictest134491ptp4l00:20:263
1446499522,7cyclictest41-21ksoftirqd/320:50:123
1446499522,6cyclictest41-21ksoftirqd/323:40:253
1446499522,6cyclictest41-21ksoftirqd/320:20:223
1446499522,5cyclictest0-21swapper/323:35:003
1446499522,32cyclictest0-21swapper/319:41:383
134491520,4ptp4l0-21swapper/121:57:341
134491520,4ptp4l0-21swapper/023:17:400
134491520,4ptp4l0-21swapper/023:17:400
134491520,4ptp4l0-21swapper/022:18:510
134491520,3ptp4l0-21swapper/122:26:491
134491520,3ptp4l0-21swapper/020:31:160
134491520,3ptp4l0-21swapper/019:52:500
134491520,12ptp4l0-21swapper/019:45:150
1446499515,7cyclictest41-21ksoftirqd/322:50:213
1446499514,5cyclictest0-21swapper/321:10:263
1446499512,7cyclictest0-21swapper/320:25:183
1446499512,12cyclictest0-21swapper/322:10:213
134491510,5ptp4l27404-21diskstats00:15:160
134491510,3ptp4l0-21swapper/100:13:401
1446499502,7cyclictest0-21swapper/320:10:253
1446499502,6cyclictest41-21ksoftirqd/322:30:193
1446499502,6cyclictest0-21swapper/300:25:163
14464995026,7cyclictest41-21ksoftirqd/322:05:013
1446499501,6cyclictest0-21swapper/323:15:233
1446499501,6cyclictest0-21swapper/323:15:233
134491500,3ptp4l0-21swapper/000:25:220
134491500,2ptp4l0-21swapper/021:12:340
1446499495,9cyclictest41-21ksoftirqd/321:15:243
1446499493,7cyclictest0-21swapper/322:28:423
1446499493,7cyclictest0-21swapper/321:55:173
1446499493,7cyclictest0-21swapper/319:36:243
1446499493,6cyclictest0-21swapper/323:50:463
1446499493,5cyclictest41-21ksoftirqd/322:05:173
1446499492,6cyclictest0-21swapper/319:11:013
1446499492,5cyclictest41-21ksoftirqd/320:55:263
1446499491,6cyclictest41-21ksoftirqd/320:45:133
134491490,5ptp4l0-21swapper/219:05:282
134491490,5ptp4l0-21swapper/219:05:272
134491490,15ptp4l25-21ksoftirqd/123:38:501
204522480,3sleep120455-21missed_timers21:40:201
1446499485,7cyclictest41-21ksoftirqd/321:00:123
1446499484,6cyclictest0-21swapper/323:14:233
1446499483,6cyclictest41-21ksoftirqd/320:15:243
1446499483,6cyclictest0-21swapper/322:35:083
1446499482,6cyclictest41-21ksoftirqd/322:20:133
1446499482,6cyclictest41-21ksoftirqd/321:25:003
134491480,4ptp4l0-21swapper/022:20:140
134491480,3ptp4l0-21swapper/021:05:530
134491480,3ptp4l0-21swapper/020:35:150
1446499474,8cyclictest41-21ksoftirqd/321:30:163
1446499473,6cyclictest0-21swapper/323:36:543
1446499473,6cyclictest0-21swapper/300:33:183
1446499473,5cyclictest0-21swapper/320:35:013
1446499472,6cyclictest0-21swapper/321:42:253
1446499470,6cyclictest13149-21grep21:25:203
134491470,4ptp4l0-21swapper/021:33:370
134491470,4ptp4l0-21swapper/020:19:410
134491470,3ptp4l0-21swapper/121:47:181
128042470,4sleep21446399cyclictest20:15:152
1446499464,6cyclictest0-21swapper/323:50:003
1446499463,6cyclictest41-21ksoftirqd/319:20:263
1446499463,6cyclictest41-21ksoftirqd/319:15:163
1446499463,6cyclictest0-21swapper/319:58:463
1446499463,6cyclictest0-21swapper/300:39:043
1446499462,6cyclictest0-21swapper/323:08:493
1446499461,5cyclictest41-21ksoftirqd/300:05:003
1446499460,7cyclictest237702chrt21:49:243
134491460,4ptp4l0-21swapper/123:30:021
134491460,3ptp4l0-21swapper/021:56:100
134491460,12ptp4l25-21ksoftirqd/123:11:041
134491460,10ptp4l0-21swapper/122:59:471
1446499453,7cyclictest0-21swapper/321:39:203
1446499453,7cyclictest0-21swapper/300:13:363
1446499453,6cyclictest0-21swapper/322:57:393
1446499452,32cyclictest0-21swapper/320:35:183
1446499451,6cyclictest0-21swapper/319:25:373
14462994540,3cyclictest25-21ksoftirqd/122:40:001
134491450,8ptp4l0-21swapper/222:21:372
134491450,4ptp4l0-21swapper/123:18:571
134491450,4ptp4l0-21swapper/123:18:571
134491450,4ptp4l0-21swapper/123:07:051
134491450,4ptp4l0-21swapper/121:50:521
134491450,4ptp4l0-21swapper/100:38:501
134491450,3ptp4l0-21swapper/319:07:003
134491450,3ptp4l0-21swapper/319:07:003
134491450,3ptp4l0-21swapper/123:21:331
134491450,3ptp4l0-21swapper/122:46:501
134491450,3ptp4l0-21swapper/100:27:451
134491450,3ptp4l0-21swapper/022:00:140
1446499443,12cyclictest0-21swapper/322:16:143
134491440,9ptp4l0-21swapper/223:44:272
134491440,9ptp4l0-21swapper/222:34:252
134491440,9ptp4l0-21swapper/221:07:242
134491440,9ptp4l0-21swapper/220:02:152
134491440,9ptp4l0-21swapper/219:57:342
134491440,9ptp4l0-21swapper/019:28:350
134491440,4ptp4l21460-21apt-get19:25:121
134491440,4ptp4l14813-21apt-get21:30:121
134491440,4ptp4l0-21swapper/120:45:371
134491440,4ptp4l0-21swapper/019:13:300
1446499432,6cyclictest0-21swapper/320:42:243
1446499431,6cyclictest41-21ksoftirqd/321:50:153
1446499430,5cyclictest0-21swapper/319:30:133
1446399433,21cyclictest0-21swapper/223:25:292
134491430,9ptp4l0-21swapper/223:09:082
134491430,9ptp4l0-21swapper/223:02:332
134491430,9ptp4l0-21swapper/222:49:322
134491430,9ptp4l0-21swapper/220:57:122
134491430,9ptp4l0-21swapper/200:13:572
134491430,4ptp4l3834-21apt-get23:25:141
134491430,4ptp4l31401-21df22:05:140
134491430,4ptp4l0-21swapper/120:20:371
134491430,3ptp4l0-21swapper/221:27:382
1446499420,6cyclictest41-21ksoftirqd/319:50:163
14462994237,3cyclictest25-21ksoftirqd/100:20:001
14462994236,3cyclictest25-21ksoftirqd/119:40:011
134691420,4getstats0-21swapper/120:43:201
134491420,9ptp4l0-21swapper/222:58:322
134491420,8ptp4l0-21swapper/222:25:092
134491420,5ptp4l5747-21df_inode20:00:131
134491420,5ptp4l13245-21ntpq19:05:221
134491420,5ptp4l13245-21ntpq19:05:221
134491420,5ptp4l0-21swapper/223:56:592
134491420,5ptp4l0-21swapper/100:02:581
134491420,4ptp4l4269-21diskstats00:35:130
134491420,4ptp4l28881-21df_inode19:40:141
134491420,4ptp4l27215-21meminfo19:35:190
134491420,4ptp4l18057-21hddtemp_smartct23:55:151
134491420,4ptp4l0-21swapper/021:29:390
134491420,3ptp4l733-21apt-get19:50:111
134491410,9ptp4l0-21swapper/220:46:382
134491410,5ptp4l0-21swapper/219:20:182
134491410,5ptp4l0-21swapper/023:10:180
134491410,5ptp4l0-21swapper/019:40:140
134491410,4ptp4l8691-21memory20:05:191
134491410,4ptp4l6822-21irqstats22:20:201
134491410,4ptp4l31182-21df_inode19:45:141
134491410,4ptp4l3018-21/usr/sbin/munin00:30:240
134491410,4ptp4l17265-21df_inode20:25:140
134491410,4ptp4l13877-21irqstats23:45:191
134491410,4ptp4l0-21swapper/223:45:222
134491410,4ptp4l0-21swapper/219:13:582
134491410,4ptp4l0-21swapper/120:10:131
134491410,4ptp4l0-21swapper/119:20:291
134491410,4ptp4l0-21swapper/000:10:120
134491410,3ptp4l30878-21apt-get19:45:102
134491410,3ptp4l25024-21iostat_ios23:00:181
134491410,3ptp4l23144-21irqstats00:05:191
134491410,3ptp4l23144-21irqstats00:05:181
134491410,3ptp4l21608-21apt-get20:35:112
134491410,3ptp4l19310-21apt-get20:30:111
134491410,3ptp4l17101-21diskstats19:15:160
134491410,3ptp4l15338-21apt-get23:50:101
134491410,3ptp4l15193-21apt-get22:40:101
134491410,3ptp4l10041-21apt-get20:10:140
1446399403,35cyclictest0-21swapper/200:25:212
1446399402,35cyclictest12048-21latency_hist21:25:002
134491400,9ptp4l0-21swapper/223:11:002
134491400,5ptp4l5966-21ps21:10:171
134491400,5ptp4l0-21swapper/220:54:072
134491400,5ptp4l0-21swapper/219:25:162
134491400,5ptp4l0-21swapper/022:45:140
134491400,4ptp4l1997-21/usr/sbin/munin22:10:181
134491400,4ptp4l0-21swapper/223:35:202
134491400,4ptp4l0-21swapper/222:51:002
134491400,4ptp4l0-21swapper/222:44:242
134491400,4ptp4l0-21swapper/222:13:212
134491400,4ptp4l0-21swapper/221:12:072
134491400,4ptp4l0-21swapper/220:43:372
134491400,4ptp4l0-21swapper/220:23:182
134491400,4ptp4l0-21swapper/220:11:072
134491400,4ptp4l0-21swapper/220:06:012
134491400,4ptp4l0-21swapper/219:44:392
134491400,4ptp4l0-21swapper/200:30:112
134491400,4ptp4l0-21swapper/200:15:482
134491400,4ptp4l0-21swapper/200:08:272
134491400,4ptp4l0-21swapper/200:08:272
134491400,4ptp4l0-21swapper/200:04:572
134491400,4ptp4l0-21swapper/122:09:041
134491400,4ptp4l0-21swapper/122:00:471
134491400,4ptp4l0-21swapper/119:30:031
134491400,4ptp4l0-21swapper/100:20:291
134491400,4ptp4l0-21swapper/023:40:230
134491400,4ptp4l0-21swapper/023:09:020
134491400,4ptp4l0-21swapper/020:56:290
134491400,4ptp4l0-21swapper/019:55:120
134491400,3ptp4l8247-21iostat_ios21:15:171
134491400,3ptp4l7074-21meminfo23:30:180
134491400,3ptp4l3925-21/usr/sbin/munin22:15:151
134491400,3ptp4l28943-21hddtemp_smartct20:50:151
134491400,3ptp4l23507-21apt-get19:30:010
134491400,3ptp4l22602-21df_inode00:05:130
134491400,3ptp4l22602-21df_inode00:05:130
134491400,3ptp4l22048-21/usr/sbin/munin21:45:132
134491400,3ptp4l20403-21iostat22:50:161
134491400,3ptp4l17110-21apt-get21:35:121
134491400,3ptp4l12764-21hddtemp_smartct20:15:151
134491400,3ptp4l10944-21meminfo21:20:191
134491390,5ptp4l0-21swapper/223:50:052
134491390,4ptp4l4871-21sshd21:06:411
134491390,4ptp4l19303-21wc21:39:592
134491390,4ptp4l0-21swapper/223:30:392
134491390,4ptp4l0-21swapper/222:35:082
134491390,4ptp4l0-21swapper/221:55:152
134491390,4ptp4l0-21swapper/221:50:352
134491390,4ptp4l0-21swapper/221:41:092
134491390,4ptp4l0-21swapper/221:33:142
134491390,4ptp4l0-21swapper/221:15:082
134491390,4ptp4l0-21swapper/220:25:062
134491390,4ptp4l0-21swapper/219:50:262
134491390,4ptp4l0-21swapper/219:35:102
134491390,4ptp4l0-21swapper/219:30:212
134491390,4ptp4l0-21swapper/123:40:191
134491390,4ptp4l0-21swapper/120:55:151
134491390,4ptp4l0-21swapper/119:15:221
134491390,4ptp4l0-21swapper/023:35:100
134491390,4ptp4l0-21swapper/022:54:280
134491390,4ptp4l0-21swapper/021:45:190
134491390,4ptp4l0-21swapper/019:05:210
134491390,4ptp4l0-21swapper/019:05:200
134491390,3ptp4l32311-21ntp_states22:05:242
134491390,3ptp4l0-21swapper/200:20:242
134491390,3ptp4l0-21swapper/121:01:331
134491380,5ptp4l0-21swapper/219:16:292
134491380,4ptp4l0-21swapper/223:20:392
134491380,4ptp4l0-21swapper/222:00:552
134491380,4ptp4l0-21swapper/221:00:322
134491380,3ptp4l0-21swapper/220:30:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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