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2026-05-13 - 13:54
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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 May 13, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20537997933,9cyclictest25-21ksoftirqd/100:10:001
20537997933,9cyclictest25-21ksoftirqd/100:10:001
20537997427,8cyclictest25-21ksoftirqd/119:25:261
20538997232,9cyclictest33-21ksoftirqd/222:30:202
2053799712,36cyclictest0-21swapper/122:25:201
20537996926,7cyclictest25-21ksoftirqd/119:22:211
20538996834,5cyclictest33-21ksoftirqd/220:05:012
20538996732,6cyclictest33-21ksoftirqd/223:50:222
20538996728,9cyclictest33-21ksoftirqd/222:43:122
2053899672,43cyclictest0-21swapper/220:42:202
20538996634,6cyclictest33-21ksoftirqd/200:25:232
20538996633,4cyclictest33-21ksoftirqd/221:30:162
20538996632,5cyclictest33-21ksoftirqd/219:25:252
20538996630,7cyclictest33-21ksoftirqd/219:35:222
20538996630,5cyclictest33-21ksoftirqd/223:05:002
20538996629,10cyclictest33-21ksoftirqd/220:39:552
20537996529,9cyclictest25-21ksoftirqd/120:10:011
134491650,3ptp4l10673-21awk19:55:283
20538996432,7cyclictest33-21ksoftirqd/220:34:022
20538996431,8cyclictest33-21ksoftirqd/200:16:422
20538996429,6cyclictest33-21ksoftirqd/222:45:222
20538996428,6cyclictest33-21ksoftirqd/221:52:482
20537996430,5cyclictest25-21ksoftirqd/122:15:011
20537996425,8cyclictest25-21ksoftirqd/119:45:001
20536996424,4cyclictest9-21ksoftirqd/023:05:190
20538996330,8cyclictest33-21ksoftirqd/222:52:062
20538996330,6cyclictest33-21ksoftirqd/221:00:282
20538996329,5cyclictest33-21ksoftirqd/219:30:072
20538996328,7cyclictest33-21ksoftirqd/221:20:162
20538996327,7cyclictest33-21ksoftirqd/223:14:292
20538996327,5cyclictest33-21ksoftirqd/219:10:172
20538996233,5cyclictest33-21ksoftirqd/221:10:212
20538996232,3cyclictest33-21ksoftirqd/219:50:252
20538996232,3cyclictest33-21ksoftirqd/219:50:252
20538996230,4cyclictest33-21ksoftirqd/219:20:202
20538996228,5cyclictest33-21ksoftirqd/221:55:172
20538996228,5cyclictest33-21ksoftirqd/219:45:002
20538996227,5cyclictest33-21ksoftirqd/222:15:002
20538996131,5cyclictest33-21ksoftirqd/222:35:192
20538996130,7cyclictest33-21ksoftirqd/222:06:002
20538996129,4cyclictest33-21ksoftirqd/200:35:002
20538996120,15cyclictest33-21ksoftirqd/200:21:142
20537996126,4cyclictest25-21ksoftirqd/123:10:221
134491610,4ptp4l0-21swapper/121:40:111
20538996031,5cyclictest33-21ksoftirqd/219:45:212
20538996029,7cyclictest33-21ksoftirqd/200:09:012
20538996029,7cyclictest33-21ksoftirqd/200:09:012
20538996028,3cyclictest33-21ksoftirqd/223:09:482
20537996027,8cyclictest25-21ksoftirqd/121:15:011
20537996024,7cyclictest25-21ksoftirqd/121:15:221
20537996022,7cyclictest25-21ksoftirqd/122:00:141
134491600,4ptp4l0-21swapper/220:45:182
134491600,4ptp4l0-21swapper/200:10:272
134491600,4ptp4l0-21swapper/200:10:272
20538995930,3cyclictest33-21ksoftirqd/222:55:272
20538995928,7cyclictest33-21ksoftirqd/222:17:322
20538995928,3cyclictest33-21ksoftirqd/200:00:142
20538995924,7cyclictest33-21ksoftirqd/221:07:422
20538995924,7cyclictest33-21ksoftirqd/221:07:422
134491590,3ptp4l823-21ls20:45:203
20538995828,6cyclictest33-21ksoftirqd/200:35:142
20538995821,5cyclictest33-21ksoftirqd/220:55:262
20537995828,7cyclictest25-21ksoftirqd/121:35:271
134491580,4ptp4l0-21swapper/021:05:230
134491580,4ptp4l0-21swapper/021:05:220
20538995733,6cyclictest33-21ksoftirqd/219:55:132
20538995725,6cyclictest33-21ksoftirqd/219:17:082
20538995723,7cyclictest33-21ksoftirqd/223:31:132
20538995723,5cyclictest33-21ksoftirqd/221:25:152
20538995719,5cyclictest33-21ksoftirqd/222:25:252
20538995716,5cyclictest33-21ksoftirqd/220:15:232
20537995724,10cyclictest25-21ksoftirqd/119:10:141
20537995723,10cyclictest25-21ksoftirqd/100:00:271
20537995719,4cyclictest25-21ksoftirqd/122:15:251
134491570,3ptp4l22017-21python21:30:281
20538995622,4cyclictest33-21ksoftirqd/220:10:162
2053799564,7cyclictest25-21ksoftirqd/122:59:591
20537995626,7cyclictest25-21ksoftirqd/119:55:271
20537995625,8cyclictest25-21ksoftirqd/120:45:271
20537995624,4cyclictest25-21ksoftirqd/100:35:291
20537995622,7cyclictest25-21ksoftirqd/121:00:001
20537995621,3cyclictest25-21ksoftirqd/121:05:151
20537995621,3cyclictest25-21ksoftirqd/121:05:151
20537995619,10cyclictest25-21ksoftirqd/122:50:241
134491560,4ptp4l0-21swapper/323:40:163
20538995534,11cyclictest33-21ksoftirqd/221:38:202
20538995527,6cyclictest33-21ksoftirqd/223:20:152
20538995525,6cyclictest33-21ksoftirqd/222:00:242
20538995522,9cyclictest33-21ksoftirqd/223:55:132
2053799553,7cyclictest1729-21grep23:05:261
20537995520,3cyclictest25-21ksoftirqd/120:05:141
134491550,4ptp4l0-21swapper/123:40:131
134491550,3ptp4l16684-21idleruntime22:30:151
134491550,3ptp4l0-21swapper/021:27:290
134491550,3ptp4l0-21swapper/020:50:150
134491550,10ptp4l0-21swapper/019:41:150
2053899543,27cyclictest121rcu_preempt21:48:502
20538995425,8cyclictest33-21ksoftirqd/220:51:372
20538995422,5cyclictest33-21ksoftirqd/221:20:002
20538995420,6cyclictest33-21ksoftirqd/223:40:132
20537995421,3cyclictest25-21ksoftirqd/119:35:271
20537995418,7cyclictest25-21ksoftirqd/119:15:271
134491540,4ptp4l0-21swapper/022:34:110
20538995320,5cyclictest33-21ksoftirqd/223:40:002
2053799534,7cyclictest25-21ksoftirqd/122:40:191
20537995320,7cyclictest25-21ksoftirqd/119:45:191
20537995319,9cyclictest25-21ksoftirqd/100:14:231
20537995319,9cyclictest25-21ksoftirqd/100:14:221
20537995318,3cyclictest25-21ksoftirqd/121:01:181
20537995311,8cyclictest25-21ksoftirqd/120:00:181
134491530,3ptp4l0-21swapper/021:20:190
134491530,3ptp4l0-21swapper/020:15:470
2053899524,3cyclictest33-21ksoftirqd/220:10:012
20538995217,6cyclictest33-21ksoftirqd/222:20:192
2053799525,3cyclictest25-21ksoftirqd/123:00:181
2053799524,3cyclictest25-21ksoftirqd/123:30:001
20538995115,7cyclictest33-21ksoftirqd/223:46:202
2053799515,7cyclictest25-21ksoftirqd/123:15:141
2053799513,7cyclictest25-21ksoftirqd/122:05:151
2053799513,3cyclictest121rcu_preempt22:20:221
20537995116,3cyclictest25-21ksoftirqd/121:57:061
134491510,4ptp4l0-21swapper/021:30:140
134491510,4ptp4l0-21swapper/020:32:570
2053799505,2cyclictest121rcu_preempt19:30:221
2053799503,7cyclictest25-21ksoftirqd/123:35:261
2053799503,7cyclictest25-21ksoftirqd/119:50:201
2053799503,7cyclictest25-21ksoftirqd/119:50:201
20537995016,3cyclictest25-21ksoftirqd/100:22:211
20537995015,7cyclictest25-21ksoftirqd/122:45:161
20537995011,3cyclictest25-21ksoftirqd/120:26:481
134491500,4ptp4l0-21swapper/323:09:443
134491500,4ptp4l0-21swapper/320:52:513
134491500,2ptp4l4913-21/usr/sbin/munin20:55:150
20538994929,12cyclictest33-21ksoftirqd/220:29:402
20538994928,10cyclictest33-21ksoftirqd/223:26:432
2053899490,7cyclictest441-21in:imuxsock20:25:012
2053799496,8cyclictest25-21ksoftirqd/100:30:171
2053799496,5cyclictest25-21ksoftirqd/120:20:201
2053799496,3cyclictest25-21ksoftirqd/123:50:211
2053799493,8cyclictest25-21ksoftirqd/121:25:151
2053799493,7cyclictest25-21ksoftirqd/100:25:291
2053799492,2cyclictest121rcu_preempt23:30:211
20537994915,3cyclictest25-21ksoftirqd/121:51:441
20537994910,3cyclictest25-21ksoftirqd/123:20:541
134491490,4ptp4l0-21swapper/300:00:063
134491490,4ptp4l0-21swapper/120:33:071
134491490,4ptp4l0-21swapper/020:08:380
20538994828,10cyclictest33-21ksoftirqd/223:17:422
2053799488,5cyclictest25-21ksoftirqd/123:56:241
2053799485,2cyclictest121rcu_preempt20:15:261
134491480,4ptp4l0-21swapper/300:25:013
134491480,4ptp4l0-21swapper/021:58:290
134491480,3ptp4l0-21swapper/320:30:143
2053899474,6cyclictest33-21ksoftirqd/221:45:002
2053799476,3cyclictest25-21ksoftirqd/121:20:201
2053799476,3cyclictest25-21ksoftirqd/120:55:001
2053799472,5cyclictest25-21ksoftirqd/121:45:281
20537994714,3cyclictest25-21ksoftirqd/120:43:231
20536994729,8cyclictest9-21ksoftirqd/021:52:140
134691470,12getstats0-21swapper/322:57:373
134491470,4ptp4l0-21swapper/300:15:253
134491470,4ptp4l0-21swapper/300:07:403
134491470,4ptp4l0-21swapper/300:07:403
134491470,3ptp4l0-21swapper/321:10:233
2053799466,6cyclictest25-21ksoftirqd/123:45:231
2053799461,7cyclictest0-21swapper/100:20:011
2053799461,2cyclictest121rcu_preempt22:35:191
2053799460,2cyclictest121rcu_preempt20:35:121
134491460,4ptp4l0-21swapper/320:05:383
134491460,4ptp4l0-21swapper/021:48:070
134491460,3ptp4l0-21swapper/022:53:080
134491460,3ptp4l0-21swapper/022:39:260
134491460,2ptp4l0-21swapper/021:00:150
134491460,12ptp4l0-21swapper/300:20:193
134491450,4ptp4l0-21swapper/023:24:180
134491450,4ptp4l0-21swapper/020:47:020
134491450,4ptp4l0-21swapper/020:20:270
134491450,3ptp4l0-21swapper/323:12:163
134491450,3ptp4l0-21swapper/019:05:260
134491450,11ptp4l0-21swapper/320:20:253
20536994411,6cyclictest9-21ksoftirqd/023:30:210
134491440,9ptp4l0-21swapper/023:59:300
134491440,9ptp4l0-21swapper/023:48:430
134491440,6ptp4l0-21swapper/119:09:181
134491440,4ptp4l20844-21apt-get22:40:133
20536994338,3cyclictest9-21ksoftirqd/022:15:000
2053699431,4cyclictest134491ptp4l21:45:000
134491430,9ptp4l22601-21taskset22:41:280
134491430,4ptp4l0-21swapper/323:18:063
2053699427,7cyclictest9-21ksoftirqd/000:25:140
20536994236,3cyclictest9-21ksoftirqd/023:35:180
20536994211,6cyclictest9-21ksoftirqd/019:50:270
20536994211,6cyclictest9-21ksoftirqd/019:50:270
134491420,5ptp4l2444-21df_inode22:00:150
134491420,5ptp4l0-21swapper/000:35:150
134491420,4ptp4l29945-21apt-get20:40:130
134491420,4ptp4l11671-21df21:10:160
134491420,3ptp4l0-21swapper/323:35:023
2053699418,7cyclictest9-21ksoftirqd/000:10:160
2053699418,7cyclictest9-21ksoftirqd/000:10:160
20536994136,3cyclictest9-21ksoftirqd/019:20:010
134491410,9ptp4l0-21swapper/320:13:323
134491410,5ptp4l10646-21python22:15:260
134491410,5ptp4l0-21swapper/023:00:020
134491410,5ptp4l0-21swapper/022:20:140
134491410,4ptp4l5980-21ntp_states23:15:240
134491410,4ptp4l5455-21ntp_states19:45:223
134491410,4ptp4l29065-21memory00:05:220
134491410,4ptp4l29065-21memory00:05:220
134491410,4ptp4l27729-21apt-get22:55:140
134491410,4ptp4l23336-21df_inode20:25:150
134491410,4ptp4l17738-21/usr/sbin/munin23:40:230
134491410,4ptp4l15421-21users21:15:290
134491410,4ptp4l0-21swapper/323:54:553
134491410,4ptp4l0-21swapper/023:51:280
134491410,4ptp4l0-21swapper/022:46:180
134491410,4ptp4l0-21swapper/020:35:210
134491410,2ptp4l246622chrt21:35:360
134491410,2ptp4l0-21swapper/023:26:360
46198400,15rtkit-daemon1301-21snmpd21:54:103
20536994036,2cyclictest9-21ksoftirqd/019:59:590
20536994034,4cyclictest9-21ksoftirqd/019:45:220
20536994010,6cyclictest9-21ksoftirqd/022:05:170
134491400,5ptp4l24431-21ls23:55:183
134491400,4ptp4l9145-21/usr/sbin/munin21:05:213
134491400,4ptp4l9145-21/usr/sbin/munin21:05:213
134491400,4ptp4l30231-21apt-get23:00:033
134491400,4ptp4l21516-21meminfo19:10:200
134491400,4ptp4l15671-21apt-get20:10:020
134491400,4ptp4l0-21swapper/320:15:153
134491400,4ptp4l0-21swapper/300:12:563
134491400,4ptp4l0-21swapper/300:12:563
134491400,4ptp4l0-21swapper/023:14:460
134491400,4ptp4l0-21swapper/022:25:240
134491400,4ptp4l0-21swapper/020:01:250
134491400,4ptp4l0-21swapper/019:36:110
134491400,4ptp4l0-21swapper/000:30:070
134491400,4ptp4l0-21swapper/000:01:550
134491400,3ptp4l15037-21ntp_states22:25:223
134491400,3ptp4l0-21swapper/000:20:240
134491390,4ptp4l27372-21cut19:25:000
134491390,4ptp4l10317-21fschecks_count00:35:173
134491390,4ptp4l0-21swapper/323:46:003
134491390,4ptp4l0-21swapper/323:30:153
134491390,4ptp4l0-21swapper/323:20:113
134491390,4ptp4l0-21swapper/322:23:273
134491390,4ptp4l0-21swapper/322:06:033
134491390,4ptp4l0-21swapper/321:30:243
134491390,4ptp4l0-21swapper/320:55:283
134491390,4ptp4l0-21swapper/319:50:193
134491390,4ptp4l0-21swapper/319:50:193
134491390,4ptp4l0-21swapper/319:35:273
134491390,4ptp4l0-21swapper/319:13:393
134491390,4ptp4l0-21swapper/019:25:190
134491390,3ptp4l31276-21ls19:30:270
134491390,3ptp4l28529-21memory21:45:223
134491380,4ptp4l0-21swapper/323:25:263
134491380,4ptp4l0-21swapper/322:50:413
134491380,4ptp4l0-21swapper/322:46:393
134491380,4ptp4l0-21swapper/322:15:093
134491380,4ptp4l0-21swapper/321:41:123
134491380,4ptp4l0-21swapper/321:25:203
134491380,4ptp4l0-21swapper/321:21:523
134491380,4ptp4l0-21swapper/320:42:543
134491380,4ptp4l0-21swapper/320:35:113
134491380,4ptp4l0-21swapper/300:30:203
134491380,4ptp4l0-21swapper/000:15:190
134491380,3ptp4l0-21swapper/321:35:163
134491380,3ptp4l0-21swapper/321:00:243
134491370,4ptp4l0-21swapper/322:37:453
134491370,4ptp4l0-21swapper/322:12:563
134491370,4ptp4l0-21swapper/322:00:363
134491370,4ptp4l0-21swapper/321:15:183
134491370,4ptp4l0-21swapper/319:35:003
134491370,3ptp4l0-21swapper/320:25:463
134491370,3ptp4l0-21swapper/319:44:433
134491370,3ptp4l0-21swapper/319:20:343
134491360,4ptp4l0-21swapper/321:55:053
134491360,3ptp4l0-21swapper/319:16:423
20539993025,3cyclictest41-21ksoftirqd/322:33:363
20539992621,3cyclictest41-21ksoftirqd/320:00:263
20539992619,5cyclictest41-21ksoftirqd/319:25:143
190452213,10sleep219149-21meminfo19:05:202
181932164,6sleep30-21swapper/319:05:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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