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2026-08-31 - 07:52
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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 Mon Aug 31, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221921650,6sleep31824299cyclictest19:45:133
263221430,6sleep11824099cyclictest20:55:161
1537021350,3sleep31824299cyclictest23:40:193
172612860,5sleep30-21swapper/319:05:263
172612860,5sleep30-21swapper/319:05:263
1824199732,31cyclictest0-21swapper/220:05:152
1824199732,31cyclictest0-21swapper/220:05:152
1824199702,31cyclictest0-21swapper/220:20:252
18240996519,9cyclictest25-21ksoftirqd/119:20:011
18240996428,9cyclictest25-21ksoftirqd/123:53:131
134491640,3ptp4l0-21swapper/221:15:272
18241996330,6cyclictest33-21ksoftirqd/223:35:172
1824199632,59cyclictest0-21swapper/223:20:292
18241996228,7cyclictest33-21ksoftirqd/200:15:212
18240996131,3cyclictest25-21ksoftirqd/122:10:221
134491610,16ptp4l0-21swapper/322:40:003
18240996028,4cyclictest25-21ksoftirqd/122:59:551
18240996028,3cyclictest25-21ksoftirqd/119:13:531
18240995929,7cyclictest25-21ksoftirqd/120:20:221
134491590,4ptp4l0-21swapper/120:00:171
134491590,4ptp4l0-21swapper/019:10:010
18241995825,4cyclictest33-21ksoftirqd/221:10:162
18240995827,3cyclictest25-21ksoftirqd/100:05:011
18240995821,3cyclictest25-21ksoftirqd/100:12:451
134491580,3ptp4l0-21swapper/021:45:170
18241995728,4cyclictest33-21ksoftirqd/220:36:282
18241995724,5cyclictest33-21ksoftirqd/220:10:142
18240995731,7cyclictest25-21ksoftirqd/122:47:041
18240995731,7cyclictest25-21ksoftirqd/119:21:421
18240995730,3cyclictest25-21ksoftirqd/122:50:261
18240995727,4cyclictest25-21ksoftirqd/120:34:131
18240995723,4cyclictest25-21ksoftirqd/120:13:091
18240995721,8cyclictest25-21ksoftirqd/121:37:381
18240995721,4cyclictest25-21ksoftirqd/123:15:281
18240995720,4cyclictest25-21ksoftirqd/122:35:571
18240995719,3cyclictest25-21ksoftirqd/119:46:391
1824199565,9cyclictest33-21ksoftirqd/219:35:222
18241995628,6cyclictest33-21ksoftirqd/200:07:302
18240995627,4cyclictest25-21ksoftirqd/123:29:041
18240995625,6cyclictest25-21ksoftirqd/122:25:191
18240995625,4cyclictest25-21ksoftirqd/122:15:271
18240995624,8cyclictest25-21ksoftirqd/100:30:281
18240995623,7cyclictest25-21ksoftirqd/120:46:571
18240995619,7cyclictest25-21ksoftirqd/121:05:191
134491560,4ptp4l0-21swapper/221:29:252
1824199554,8cyclictest33-21ksoftirqd/223:55:002
1824199554,3cyclictest121rcu_preempt22:10:162
1824199553,6cyclictest33-21ksoftirqd/221:50:272
18241995524,8cyclictest33-21ksoftirqd/221:30:172
1824199552,29cyclictest0-21swapper/220:51:152
1824199552,29cyclictest0-21swapper/220:51:152
18241995521,4cyclictest33-21ksoftirqd/221:35:142
18240995528,7cyclictest25-21ksoftirqd/119:40:491
18240995523,4cyclictest25-21ksoftirqd/100:39:471
18240995520,3cyclictest25-21ksoftirqd/122:02:511
134491550,3ptp4l0-21swapper/100:15:521
18241995423,3cyclictest33-21ksoftirqd/219:12:272
1824199542,28cyclictest0-21swapper/223:58:152
1824199540,7cyclictest33-21ksoftirqd/200:05:012
18240995428,8cyclictest25-21ksoftirqd/100:28:581
18240995428,8cyclictest25-21ksoftirqd/100:28:581
18240995428,4cyclictest25-21ksoftirqd/123:40:141
18240995422,8cyclictest25-21ksoftirqd/120:15:271
18240995422,4cyclictest25-21ksoftirqd/121:22:331
18240995421,4cyclictest25-21ksoftirqd/121:15:151
134491540,3ptp4l0-21swapper/200:38:562
134491540,12ptp4l17027-21ntp_states19:05:230
134491540,12ptp4l17027-21ntp_states19:05:230
1824199535,8cyclictest33-21ksoftirqd/222:25:292
1824199535,10cyclictest33-21ksoftirqd/219:30:252
1824199535,10cyclictest33-21ksoftirqd/219:30:252
1824199532,20cyclictest0-21swapper/221:43:082
18240995326,7cyclictest25-21ksoftirqd/121:12:311
18240995325,7cyclictest25-21ksoftirqd/123:35:171
18240995324,4cyclictest25-21ksoftirqd/100:23:181
18240995315,7cyclictest25-21ksoftirqd/123:31:061
134491530,4ptp4l0-21swapper/021:58:460
1824199525,4cyclictest33-21ksoftirqd/200:24:592
1824199525,2cyclictest121rcu_preempt23:00:262
1824199524,8cyclictest33-21ksoftirqd/220:50:012
1824199524,8cyclictest33-21ksoftirqd/200:30:202
1824199524,6cyclictest33-21ksoftirqd/221:00:262
1824199524,5cyclictest33-21ksoftirqd/220:00:152
1824199522,6cyclictest33-21ksoftirqd/223:11:022
1824199522,6cyclictest33-21ksoftirqd/221:05:222
18241995224,8cyclictest33-21ksoftirqd/223:15:282
1824199521,6cyclictest0-21swapper/222:45:182
18240995228,7cyclictest25-21ksoftirqd/120:38:301
18240995228,7cyclictest25-21ksoftirqd/120:25:061
18240995225,7cyclictest25-21ksoftirqd/123:00:111
18240995225,6cyclictest25-21ksoftirqd/121:41:531
18240995222,7cyclictest25-21ksoftirqd/121:55:221
18240995214,7cyclictest25-21ksoftirqd/119:36:131
134491520,4ptp4l0-21swapper/023:13:250
1824199513,7cyclictest33-21ksoftirqd/220:30:232
1824199512,31cyclictest0-21swapper/219:20:012
1824199510,7cyclictest33-21ksoftirqd/219:55:262
18240995118,7cyclictest25-21ksoftirqd/121:30:001
18240995117,8cyclictest25-21ksoftirqd/121:00:171
18240995116,7cyclictest25-21ksoftirqd/119:25:271
134491510,4ptp4l0-21swapper/021:13:310
134491510,3ptp4l0-21swapper/319:13:043
1824199506,2cyclictest121rcu_preempt20:29:042
1824199504,6cyclictest33-21ksoftirqd/220:55:252
1824199503,6cyclictest33-21ksoftirqd/223:30:172
1824199503,6cyclictest33-21ksoftirqd/219:20:002
1824199502,7cyclictest0-21swapper/222:15:162
1824199502,6cyclictest0-21swapper/200:10:582
1824199502,4cyclictest33-21ksoftirqd/222:35:342
1824199500,7cyclictest33-21ksoftirqd/222:05:162
1824199500,14cyclictest33-21ksoftirqd/220:16:092
18240995024,6cyclictest25-21ksoftirqd/121:33:541
18240995022,3cyclictest25-21ksoftirqd/122:05:231
18240995018,4cyclictest25-21ksoftirqd/122:22:271
18240995017,6cyclictest25-21ksoftirqd/123:05:161
18240995016,6cyclictest25-21ksoftirqd/100:05:181
134491500,4ptp4l0-21swapper/222:50:042
134491500,4ptp4l0-21swapper/019:26:530
134491500,4ptp4l0-21swapper/019:20:250
1824199494,7cyclictest33-21ksoftirqd/223:45:292
1824199494,6cyclictest33-21ksoftirqd/221:45:252
1824199494,5cyclictest33-21ksoftirqd/222:30:192
1824199494,5cyclictest33-21ksoftirqd/221:20:202
1824199491,6cyclictest14999-21apache223:25:142
1824199491,6cyclictest0-21swapper/222:02:362
1824199490,6cyclictest33-21ksoftirqd/223:05:172
18240994921,7cyclictest25-21ksoftirqd/123:45:281
18240994914,8cyclictest25-21ksoftirqd/122:30:231
134491490,4ptp4l9286-21ntp_offset00:35:200
134491490,3ptp4l0-21swapper/121:45:341
1824199484,5cyclictest33-21ksoftirqd/219:25:182
1824199482,8cyclictest33-21ksoftirqd/219:45:012
1824199481,6cyclictest33-21ksoftirqd/222:20:222
1824199480,5cyclictest33-21ksoftirqd/221:55:252
18240994821,4cyclictest25-21ksoftirqd/119:58:441
134491480,9ptp4l0-21swapper/119:05:121
134491480,9ptp4l0-21swapper/119:05:121
134491480,4ptp4l0-21swapper/323:37:203
1824199474,7cyclictest33-21ksoftirqd/220:40:152
1824199473,5cyclictest33-21ksoftirqd/223:40:182
1824199472,6cyclictest33-21ksoftirqd/200:26:412
1824199472,6cyclictest33-21ksoftirqd/200:26:412
1824199472,5cyclictest33-21ksoftirqd/219:46:202
1824199471,5cyclictest0-21swapper/219:53:422
134491470,5ptp4l0-21swapper/321:20:043
134491470,4ptp4l0-21swapper/119:34:541
134491470,4ptp4l0-21swapper/119:34:541
18240994628,10cyclictest25-21ksoftirqd/120:50:171
18240994628,10cyclictest25-21ksoftirqd/120:50:171
1824099462,2cyclictest121rcu_preempt23:55:221
134491460,4ptp4l0-21swapper/323:07:513
134491460,4ptp4l0-21swapper/119:52:081
134491460,3ptp4l0-21swapper/322:20:553
1824199455,3cyclictest121rcu_preempt22:40:192
134491450,4ptp4l2141-21apt-get20:55:130
134491450,4ptp4l0-21swapper/019:58:580
134491450,10ptp4l0-21swapper/300:09:063
134491440,9ptp4l0-21swapper/022:23:560
134491440,4ptp4l2598-21ls00:20:283
134491440,2ptp4l0-21swapper/023:02:180
1824199433,6cyclictest33-21ksoftirqd/222:55:152
1824099433,3cyclictest25-21ksoftirqd/123:20:541
1824099432,3cyclictest121rcu_preempt23:15:011
134491430,7ptp4l41-21ksoftirqd/320:45:283
134491430,5ptp4l0-21swapper/020:00:140
134491430,4ptp4l4508-21apt-get21:00:110
134491430,4ptp4l0-21swapper/021:25:280
1824099428,11cyclictest25-21ksoftirqd/122:40:181
1824099424,2cyclictest25-21ksoftirqd/121:54:361
1823999420,2cyclictest121rcu_preempt00:10:140
134491420,5ptp4l19345-21ntp_states20:20:240
134491420,5ptp4l0-21swapper/219:05:582
134491420,5ptp4l0-21swapper/219:05:582
134491420,5ptp4l0-21swapper/019:45:220
134491420,4ptp4l16197-21users23:40:270
134491420,4ptp4l0-21swapper/021:33:570
134491420,3ptp4l12570-21iostat_ios22:25:190
1824099415,2cyclictest25-21ksoftirqd/120:05:081
1824099415,2cyclictest25-21ksoftirqd/120:05:081
134491410,9ptp4l0-21swapper/320:19:133
134491410,5ptp4l0-21swapper/321:25:143
134491410,5ptp4l0-21swapper/319:55:243
134491410,5ptp4l0-21swapper/319:40:273
134491410,5ptp4l0-21swapper/000:20:150
134491410,4ptp4l7866-21diskstats23:25:153
134491410,4ptp4l7655-21irqstats21:05:200
134491410,4ptp4l5459-21ntp_states19:50:220
134491410,4ptp4l32235-21apt-get20:50:130
134491410,4ptp4l32235-21apt-get20:50:130
134491410,4ptp4l2943-21apt-get23:15:120
134491410,4ptp4l27645-21apt-get20:40:120
134491410,4ptp4l26433-21iostat_ios22:55:190
134491410,4ptp4l21987-21iostat23:55:180
134491410,4ptp4l17602-21memory22:35:220
134491410,4ptp4l14870-21iostat_ios22:30:210
134491410,4ptp4l0-21swapper/320:10:113
134491410,4ptp4l0-21swapper/023:05:160
134491410,4ptp4l0-21swapper/022:45:550
134491410,4ptp4l0-21swapper/019:35:110
134491410,4ptp4l0-21swapper/000:05:010
134491410,3ptp4l8884-21ls22:15:290
134491410,3ptp4l30961-21ls20:45:240
18240994035,3cyclictest25-21ksoftirqd/120:40:131
134491400,5ptp4l23242-21wc21:40:000
134491400,5ptp4l0-21swapper/022:40:180
134491400,5ptp4l0-21swapper/021:20:170
134491400,4ptp4l5633-21/usr/sbin/munin21:00:223
134491400,4ptp4l0-21swapper/322:50:283
134491400,4ptp4l0-21swapper/322:45:143
134491400,4ptp4l0-21swapper/322:30:343
134491400,4ptp4l0-21swapper/321:15:153
134491400,4ptp4l0-21swapper/321:05:193
134491400,4ptp4l0-21swapper/320:05:263
134491400,4ptp4l0-21swapper/320:05:263
134491400,4ptp4l0-21swapper/319:30:503
134491400,4ptp4l0-21swapper/319:30:503
134491400,4ptp4l0-21swapper/023:50:240
134491400,4ptp4l0-21swapper/023:30:120
134491400,4ptp4l0-21swapper/020:10:220
134491400,4ptp4l0-21swapper/019:16:130
134491400,4ptp4l0-21swapper/000:15:210
134491400,3ptp4l3326-21apt-get00:25:100
134491400,3ptp4l3326-21apt-get00:25:100
134491400,3ptp4l24862-21ntp_states00:00:263
134491400,3ptp4l24600-21ls20:30:290
134491400,3ptp4l0-21swapper/020:29:020
1823999391,11cyclictest13277-21ntp_states23:35:250
134491390,5ptp4l0-21swapper/323:10:463
134491390,4ptp4l21024-21latency_hist22:45:003
134491390,4ptp4l0-21swapper/322:25:113
134491390,4ptp4l0-21swapper/320:22:413
134491390,4ptp4l0-21swapper/320:00:273
134491390,4ptp4l0-21swapper/023:20:540
134491390,4ptp4l0-21swapper/022:10:140
134491390,4ptp4l0-21swapper/022:05:220
134491390,4ptp4l0-21swapper/020:18:150
134491390,4ptp4l0-21swapper/019:42:100
134491390,4ptp4l0-21swapper/019:30:160
134491390,4ptp4l0-21swapper/019:30:160
134491390,4ptp4l0-21swapper/000:30:170
134491390,4ptp4l0-21swapper/000:00:180
134491390,3ptp4l30091-21mailstats00:10:263
134491390,3ptp4l23560-21apt-get22:50:120
134491390,3ptp4l0-21swapper/021:41:450
134491390,3ptp4l0-21swapper/021:17:350
134491380,5ptp4l0-21swapper/320:40:143
134491380,4ptp4l0-21swapper/323:56:533
134491380,4ptp4l0-21swapper/323:50:053
134491380,4ptp4l0-21swapper/323:47:153
134491380,4ptp4l0-21swapper/323:00:373
134491380,4ptp4l0-21swapper/321:51:573
134491380,4ptp4l0-21swapper/321:13:103
134491380,4ptp4l0-21swapper/319:17:343
134491380,4ptp4l0-21swapper/300:34:403
134491380,4ptp4l0-21swapper/300:25:143
134491380,4ptp4l0-21swapper/300:25:143
134491380,4ptp4l0-21swapper/300:18:463
134491380,4ptp4l0-21swapper/021:53:000
134491380,4ptp4l0-21swapper/020:05:230
134491380,4ptp4l0-21swapper/020:05:230
134491380,3ptp4l23133-21df_abs19:20:163
134491380,3ptp4l16808-21munin-node23:45:110
134491380,3ptp4l0-21swapper/323:24:223
134491380,3ptp4l0-21swapper/322:16:153
134491380,3ptp4l0-21swapper/319:28:223
134491380,3ptp4l0-21swapper/300:35:353
134491380,3ptp4l0-21swapper/020:36:160
134491370,6ptp4l0-21swapper/322:00:033
134491370,4ptp4l0-21swapper/323:18:163
134491370,4ptp4l0-21swapper/321:45:073
134491370,4ptp4l0-21swapper/321:31:103
134491370,4ptp4l0-21swapper/320:35:593
134491370,4ptp4l0-21swapper/023:25:160
134491370,3ptp4l1301-21snmpd22:55:583
134491370,3ptp4l0-21swapper/322:05:503
134491370,3ptp4l0-21swapper/321:57:303
134491370,3ptp4l0-21swapper/321:38:283
134491370,3ptp4l0-21swapper/320:53:323
134491370,3ptp4l0-21swapper/320:53:323
134491370,3ptp4l0-21swapper/320:25:103
134491370,3ptp4l0-21swapper/319:35:543
134491370,3ptp4l0-21swapper/022:00:120
134491360,4ptp4l0-21swapper/323:32:353
134491360,4ptp4l0-21swapper/322:14:573
134491360,4ptp4l0-21swapper/321:41:213
134491360,4ptp4l0-21swapper/320:32:123
134491360,3ptp4l0-21swapper/320:55:253
134491350,3ptp4l0-21swapper/319:52:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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