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2026-03-11 - 13:01
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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 Wed Mar 11, 2026 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20096996534,5cyclictest33-21ksoftirqd/200:35:182
20096996432,6cyclictest33-21ksoftirqd/223:20:272
20096996432,10cyclictest33-21ksoftirqd/220:00:242
20096996422,8cyclictest33-21ksoftirqd/221:10:242
20096996235,3cyclictest33-21ksoftirqd/220:15:262
20096996231,3cyclictest33-21ksoftirqd/219:50:252
20096996230,6cyclictest33-21ksoftirqd/219:45:002
20096996227,5cyclictest33-21ksoftirqd/223:35:012
20096996227,5cyclictest33-21ksoftirqd/223:35:012
134491620,4ptp4l0-21swapper/023:22:010
20096996132,4cyclictest33-21ksoftirqd/220:25:222
20096996131,7cyclictest33-21ksoftirqd/200:30:152
20096996131,6cyclictest33-21ksoftirqd/222:15:252
20096996129,5cyclictest33-21ksoftirqd/219:25:222
20096996128,3cyclictest33-21ksoftirqd/223:45:002
20096996032,7cyclictest33-21ksoftirqd/219:12:242
20096996031,3cyclictest33-21ksoftirqd/219:23:122
20096996029,4cyclictest33-21ksoftirqd/221:20:152
134491600,4ptp4l2009799cyclictest20:20:013
134491600,4ptp4l0-21swapper/119:22:251
134491600,4ptp4l0-21swapper/022:53:240
20096995933,6cyclictest33-21ksoftirqd/200:15:152
20096995932,6cyclictest33-21ksoftirqd/222:35:142
20096995930,3cyclictest33-21ksoftirqd/223:35:222
20096995929,4cyclictest33-21ksoftirqd/221:55:322
20096995928,5cyclictest33-21ksoftirqd/223:00:152
20096995927,5cyclictest33-21ksoftirqd/221:30:242
20096995927,4cyclictest33-21ksoftirqd/220:30:282
20096995925,6cyclictest33-21ksoftirqd/219:45:262
134491590,4ptp4l0-21swapper/021:13:360
20096995831,4cyclictest33-21ksoftirqd/223:45:202
20096995829,5cyclictest33-21ksoftirqd/221:50:212
20096995829,5cyclictest33-21ksoftirqd/219:55:222
20096995829,4cyclictest33-21ksoftirqd/223:25:172
20096995829,4cyclictest33-21ksoftirqd/222:31:242
20096995829,3cyclictest33-21ksoftirqd/221:04:532
20096995828,4cyclictest33-21ksoftirqd/222:50:172
20096995820,4cyclictest33-21ksoftirqd/200:05:262
134491580,5ptp4l2009599cyclictest00:20:261
134491580,4ptp4l0-21swapper/323:55:233
264282570,7sleep02009499cyclictest20:30:250
20096995732,5cyclictest33-21ksoftirqd/222:40:242
20096995729,3cyclictest33-21ksoftirqd/219:34:142
20096995728,3cyclictest33-21ksoftirqd/221:46:512
20096995725,6cyclictest33-21ksoftirqd/223:05:172
20096995722,4cyclictest33-21ksoftirqd/220:40:272
134491570,5ptp4l0-21swapper/119:06:181
2009699563,8cyclictest33-21ksoftirqd/200:20:192
20096995630,6cyclictest33-21ksoftirqd/223:10:292
20096995626,6cyclictest33-21ksoftirqd/222:26:252
20096995626,5cyclictest33-21ksoftirqd/220:55:132
134491560,4ptp4l0-21swapper/323:23:143
134491560,4ptp4l0-21swapper/023:51:180
134491560,3ptp4l0-21swapper/219:18:182
20096995527,3cyclictest33-21ksoftirqd/222:21:232
20096995527,3cyclictest33-21ksoftirqd/220:23:112
20096995525,8cyclictest33-21ksoftirqd/221:15:262
20096995524,7cyclictest33-21ksoftirqd/221:45:002
20096995523,4cyclictest33-21ksoftirqd/221:25:242
20096995520,4cyclictest33-21ksoftirqd/222:46:332
134491550,4ptp4l2009799cyclictest19:25:163
134491550,3ptp4l0-21swapper/020:49:050
104272550,5sleep30-21swapper/321:05:223
20096995422,5cyclictest33-21ksoftirqd/220:35:152
20096995422,5cyclictest33-21ksoftirqd/220:35:152
134491540,3ptp4l0-21swapper/321:15:133
134491540,3ptp4l0-21swapper/320:29:383
134491540,3ptp4l0-21swapper/319:22:013
134491540,11ptp4l0-21swapper/319:50:283
20096995319,4cyclictest33-21ksoftirqd/223:50:242
20096995318,6cyclictest33-21ksoftirqd/221:10:002
2009599530,4cyclictest27600-21wc21:45:001
134491530,4ptp4l0-21swapper/219:35:532
134491530,2ptp4l0-21swapper/321:57:003
134491530,2ptp4l0-21swapper/319:31:583
2009699525,2cyclictest33-21ksoftirqd/200:05:012
2009699524,3cyclictest33-21ksoftirqd/223:15:162
20096995226,3cyclictest33-21ksoftirqd/220:55:012
20096995222,5cyclictest33-21ksoftirqd/221:35:212
20096995217,5cyclictest33-21ksoftirqd/200:25:132
20096995212,5cyclictest33-21ksoftirqd/222:55:202
134491520,3ptp4l25106-21apt-get20:30:143
20096995119,3cyclictest33-21ksoftirqd/223:55:242
20096995116,4cyclictest33-21ksoftirqd/220:05:022
134491510,5ptp4l9-21ksoftirqd/022:33:150
134491510,3ptp4l0-21swapper/322:35:163
2009699505,3cyclictest33-21ksoftirqd/222:00:172
20096995017,4cyclictest33-21ksoftirqd/220:49:382
134491500,9ptp4l19330-21ls19:05:260
134491500,4ptp4l0-21swapper/322:00:423
134491500,4ptp4l0-21swapper/021:54:560
134491490,4ptp4l0-21swapper/220:10:532
134491490,3ptp4l0-21swapper/222:10:252
2009699485,2cyclictest33-21ksoftirqd/200:10:342
2009599481,4cyclictest21816-21meminfo21:30:191
134491480,3ptp4l2009799cyclictest19:46:273
134491470,3ptp4l0-21swapper/320:21:183
2009699462,3cyclictest33-21ksoftirqd/222:05:212
20095994612,33cyclictest8017-21kworker/1:123:09:081
134491460,4ptp4l0-21swapper/321:10:043
134491460,3ptp4l0-21swapper/100:35:061
134491450,4ptp4l21246-21apt-get22:40:111
134491450,2ptp4l121rcu_preempt23:45:233
134491450,2ptp4l0-21swapper/023:15:450
134491440,4ptp4l21246-21apt-get22:40:100
134491440,3ptp4l0-21swapper/320:35:503
134491440,3ptp4l0-21swapper/320:35:503
134491430,9ptp4l0-21swapper/000:19:120
134491430,5ptp4l0-21swapper/022:20:150
134491430,5ptp4l0-21swapper/019:40:180
134491430,4ptp4l18925-21apt-get22:35:121
134491430,3ptp4l0-21swapper/322:26:143
134491430,10ptp4l0-21swapper/000:00:080
134491420,5ptp4l31052-21ntp_states20:40:231
134491420,5ptp4l0-21swapper/023:45:180
134491420,5ptp4l0-21swapper/023:30:170
134491420,5ptp4l0-21swapper/023:30:170
134491420,5ptp4l0-21swapper/023:25:130
134491420,4ptp4l31352-21ls20:40:263
134491420,4ptp4l2318-21gnome-shell00:00:583
2009599410,3cyclictest14901-21iostat_ios22:25:171
134491410,5ptp4l27343-21latency_hist20:35:011
134491410,5ptp4l22199-21idleruntime-cro19:15:003
134491410,5ptp4l0-21swapper/320:10:203
134491410,5ptp4l0-21swapper/120:00:161
134491410,5ptp4l0-21swapper/019:45:150
134491410,4ptp4l6772-21/usr/sbin/munin21:00:223
134491410,4ptp4l27152-21users21:40:293
134491410,4ptp4l17009-21apt-get23:40:113
134491410,4ptp4l10776-21ntp_states22:15:233
134491410,4ptp4l0-21swapper/120:35:171
134491410,4ptp4l0-21swapper/120:35:161
134491410,4ptp4l0-21swapper/022:01:530
134491410,4ptp4l0-21swapper/021:27:580
134491410,4ptp4l0-21swapper/020:17:580
134491410,4ptp4l0-21swapper/020:13:000
134491410,3ptp4l24113-21iostat_ios22:45:173
134491410,3ptp4l18561-21apt-get21:25:113
134491410,3ptp4l12930-21meminfo22:20:203
134491410,3ptp4l0-21swapper/323:51:563
134491410,3ptp4l0-21swapper/322:05:403
134491410,3ptp4l0-21swapper/300:05:183
134491400,6ptp4l22460-21tail21:30:273
134491400,6ptp4l18375-21cpuspeed_turbos20:15:151
134491400,6ptp4l0-21swapper/319:40:293
134491400,5ptp4l0-21swapper/122:30:261
134491400,5ptp4l0-21swapper/120:57:501
134491400,5ptp4l0-21swapper/000:05:270
134491400,4ptp4l14910-21awk20:05:263
134491400,4ptp4l0-21swapper/322:50:143
134491400,4ptp4l0-21swapper/322:40:133
134491400,4ptp4l0-21swapper/322:11:583
134491400,4ptp4l0-21swapper/120:10:251
134491400,4ptp4l0-21swapper/023:11:150
134491400,4ptp4l0-21swapper/022:36:380
134491400,4ptp4l0-21swapper/022:16:460
134491400,4ptp4l0-21swapper/021:16:390
134491400,4ptp4l0-21swapper/020:52:450
134491400,4ptp4l0-21swapper/020:43:150
134491400,4ptp4l0-21swapper/020:35:400
134491400,4ptp4l0-21swapper/020:35:400
134491400,4ptp4l0-21swapper/020:06:360
134491400,4ptp4l0-21swapper/020:04:130
134491400,4ptp4l0-21swapper/019:57:150
134491400,4ptp4l0-21swapper/019:11:430
134491400,4ptp4l0-21swapper/000:30:140
134491400,3ptp4l8464-21apt-get19:55:033
134491400,3ptp4l7152-21ls00:25:273
134491400,3ptp4l19582-21ls21:25:201
134491400,3ptp4l1182-21perl23:05:163
134491400,3ptp4l0-21swapper/320:57:313
134491390,5ptp4l0-21swapper/121:20:201
134491390,5ptp4l0-21swapper/019:50:130
134491390,4ptp4l17200-21ls21:20:193
134491390,4ptp4l0-21swapper/323:35:053
134491390,4ptp4l0-21swapper/323:25:143
134491390,4ptp4l0-21swapper/323:15:243
134491390,4ptp4l0-21swapper/322:55:213
134491390,4ptp4l0-21swapper/321:50:143
134491390,4ptp4l0-21swapper/320:50:283
134491390,4ptp4l0-21swapper/320:45:153
134491390,4ptp4l0-21swapper/320:02:473
134491390,4ptp4l0-21swapper/319:15:163
134491390,4ptp4l0-21swapper/300:30:223
134491390,4ptp4l0-21swapper/300:15:193
134491390,4ptp4l0-21swapper/300:10:103
134491390,4ptp4l0-21swapper/122:08:191
134491390,4ptp4l0-21swapper/121:55:421
134491390,4ptp4l0-21swapper/121:45:131
134491390,4ptp4l0-21swapper/121:15:221
134491390,4ptp4l0-21swapper/120:48:521
134491390,4ptp4l0-21swapper/120:20:261
134491390,4ptp4l0-21swapper/120:05:281
134491390,4ptp4l0-21swapper/119:45:161
134491390,4ptp4l0-21swapper/119:40:251
134491390,4ptp4l0-21swapper/119:10:181
134491390,4ptp4l0-21swapper/023:57:390
134491390,4ptp4l0-21swapper/023:40:530
134491390,4ptp4l0-21swapper/023:08:480
134491390,4ptp4l0-21swapper/022:55:220
134491390,4ptp4l0-21swapper/022:46:130
134491390,4ptp4l0-21swapper/022:25:360
134491390,4ptp4l0-21swapper/022:08:110
134491390,4ptp4l0-21swapper/021:20:260
134491390,4ptp4l0-21swapper/020:56:260
134491390,4ptp4l0-21swapper/020:27:020
134491390,4ptp4l0-21swapper/020:20:050
134491390,4ptp4l0-21swapper/019:35:200
134491390,4ptp4l0-21swapper/019:32:420
134491390,4ptp4l0-21swapper/019:25:530
134491390,4ptp4l0-21swapper/019:22:150
134491390,4ptp4l0-21swapper/000:35:560
134491390,4ptp4l0-21swapper/000:26:560
134491390,4ptp4l0-21swapper/000:22:290
134491390,4ptp4l0-21swapper/000:10:500
134491390,3ptp4l0-21swapper/323:30:203
134491390,3ptp4l0-21swapper/323:30:203
134491390,3ptp4l0-21swapper/323:10:143
134491390,3ptp4l0-21swapper/321:46:483
134491390,3ptp4l0-21swapper/300:39:583
134491390,3ptp4l0-21swapper/300:20:253
134491390,3ptp4l0-21swapper/022:10:550
134491390,3ptp4l0-21swapper/021:33:240
2009599380,4cyclictest9642-21taskset22:15:071
134491380,5ptp4l0-21swapper/021:05:250
134491380,4ptp4l0-21swapper/323:00:163
134491380,4ptp4l0-21swapper/322:30:203
134491380,4ptp4l0-21swapper/321:35:103
134491380,4ptp4l0-21swapper/319:36:173
134491380,4ptp4l0-21swapper/123:57:171
134491380,4ptp4l0-21swapper/123:43:371
134491380,4ptp4l0-21swapper/121:11:181
134491380,4ptp4l0-21swapper/119:56:421
134491380,4ptp4l0-21swapper/119:50:431
134491380,4ptp4l0-21swapper/119:30:001
134491380,4ptp4l0-21swapper/100:00:231
134491380,4ptp4l0-21swapper/023:35:130
134491380,4ptp4l0-21swapper/023:00:220
134491380,4ptp4l0-21swapper/021:55:500
134491380,4ptp4l0-21swapper/021:45:440
134491380,4ptp4l0-21swapper/021:40:580
134491380,4ptp4l0-21swapper/021:35:500
134491380,4ptp4l0-21swapper/021:01:270
134491380,4ptp4l0-21swapper/019:18:150
134491380,3ptp4l0-21swapper/122:00:241
134491370,4ptp4l25-21ksoftirqd/100:08:541
134491370,4ptp4l0-21swapper/123:00:231
134491370,4ptp4l0-21swapper/122:11:551
134491370,3ptp4l0-21swapper/123:45:511
134491370,3ptp4l0-21swapper/120:50:251
134491370,3ptp4l0-21swapper/100:15:121
20095993630,4cyclictest25-21ksoftirqd/123:51:091
134491360,4ptp4l0-21swapper/122:55:411
134491360,4ptp4l0-21swapper/121:05:041
134491360,3ptp4l0-21swapper/100:30:261
20095993529,4cyclictest25-21ksoftirqd/122:49:351
20095993429,3cyclictest25-21ksoftirqd/123:20:171
20095993429,3cyclictest25-21ksoftirqd/121:50:121
20095993427,5cyclictest25-21ksoftirqd/123:11:331
2009599342,21cyclictest0-21swapper/123:15:181
2009599340,3cyclictest23108-21df_inode20:25:131
20095993328,3cyclictest25-21ksoftirqd/119:39:591
20095993328,3cyclictest25-21ksoftirqd/119:32:501
20095993327,4cyclictest25-21ksoftirqd/121:01:591
20095993311,19cyclictest27907-21latency_hist22:55:011
20095993226,4cyclictest25-21ksoftirqd/123:32:591
20095993226,4cyclictest25-21ksoftirqd/123:32:591
20095993226,4cyclictest25-21ksoftirqd/119:16:341
2009599321,3cyclictest24285-21ntp_states21:35:231
2009599319,19cyclictest31425-21fschecks_time00:10:151
2009599310,4cyclictest16439-21chrt23:36:161
20095993023,5cyclictest25-21ksoftirqd/123:28:061
2009599296,20cyclictest5787-21ls00:25:131
2009599292,2cyclictest0-21swapper/122:20:271
1378912822,2phc2sys0-21swapper/319:08:003
177552234,10sleep217765-21apt-get19:05:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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