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2026-05-08 - 03:25
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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 Fri May 08, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2451399702,32cyclictest0-21swapper/321:05:153
196902680,8sleep22451299cyclictest23:35:182
24513996425,4cyclictest41-21ksoftirqd/319:10:213
24513996332,3cyclictest41-21ksoftirqd/300:05:133
134491630,5ptp4l25597-21/usr/sbin/munin19:10:220
134491630,4ptp4l3371-21apt-get00:10:112
24513996233,7cyclictest41-21ksoftirqd/321:42:063
24513996233,7cyclictest41-21ksoftirqd/321:42:063
24513996128,4cyclictest41-21ksoftirqd/300:30:013
134491610,4ptp4l0-21swapper/023:50:110
24513996031,4cyclictest41-21ksoftirqd/322:55:253
24513996030,9cyclictest41-21ksoftirqd/320:10:183
235172600,6sleep20-21swapper/219:05:232
134491600,4ptp4l0-21swapper/119:25:151
24513995932,9cyclictest41-21ksoftirqd/321:25:003
24513995929,7cyclictest41-21ksoftirqd/321:35:263
24513995927,8cyclictest41-21ksoftirqd/322:50:153
134491590,4ptp4l13526-21meminfo00:30:202
134491590,4ptp4l0-21swapper/119:05:201
24513995826,4cyclictest41-21ksoftirqd/320:20:263
24513995822,6cyclictest41-21ksoftirqd/319:55:183
24513995822,4cyclictest41-21ksoftirqd/319:15:193
24513995821,4cyclictest41-21ksoftirqd/323:20:173
134491580,4ptp4l0-21swapper/321:15:183
134491580,4ptp4l0-21swapper/221:20:192
134491580,3ptp4l0-21swapper/320:37:323
24513995727,8cyclictest41-21ksoftirqd/300:10:163
134491570,15ptp4l0-21swapper/021:36:380
24513995623,7cyclictest41-21ksoftirqd/323:45:143
24513995619,4cyclictest41-21ksoftirqd/323:14:403
134491560,4ptp4l29055-21hwlatdetect23:55:181
134491560,4ptp4l0-21swapper/220:46:552
2451399555,9cyclictest41-21ksoftirqd/320:15:293
2451399552,6cyclictest41-21ksoftirqd/323:50:113
24513995522,6cyclictest41-21ksoftirqd/321:30:253
134491550,4ptp4l0-21swapper/121:14:291
134491550,4ptp4l0-21swapper/121:14:291
2451399544,8cyclictest41-21ksoftirqd/300:00:233
2451399542,6cyclictest0-21swapper/320:50:293
134491540,3ptp4l0-21swapper/122:56:551
2451399533,8cyclictest41-21ksoftirqd/319:35:003
2451399532,5cyclictest19961-21sed22:25:163
24513995324,6cyclictest41-21ksoftirqd/300:25:243
24513995322,8cyclictest41-21ksoftirqd/319:30:003
134491530,3ptp4l0-21swapper/122:35:351
2451399525,7cyclictest41-21ksoftirqd/300:20:183
2451399524,9cyclictest41-21ksoftirqd/322:30:303
2451399522,7cyclictest0-21swapper/320:25:103
24513995218,6cyclictest41-21ksoftirqd/300:00:003
2451399521,6cyclictest0-21swapper/320:45:003
2451399521,10cyclictest0-21swapper/321:54:193
2451399520,7cyclictest401ktimersoftd/321:00:003
134491520,3ptp4l0-21swapper/219:14:142
134491520,3ptp4l0-21swapper/121:31:401
134491520,3ptp4l0-21swapper/019:54:230
134491520,11ptp4l0-21swapper/122:28:371
2451399515,7cyclictest41-21ksoftirqd/322:05:153
2451399513,7cyclictest41-21ksoftirqd/323:30:193
2451399513,6cyclictest41-21ksoftirqd/322:10:293
2451399513,6cyclictest41-21ksoftirqd/322:10:293
2451399512,9cyclictest0-21swapper/320:07:103
24513995117,7cyclictest41-21ksoftirqd/322:40:153
2451399510,5cyclictest401ktimersoftd/320:45:283
2451399510,12cyclictest41-21ksoftirqd/323:40:173
134491510,12ptp4l0-21swapper/019:24:440
2451399504,7cyclictest41-21ksoftirqd/323:10:003
2451399504,6cyclictest0-21swapper/321:10:173
2451399504,6cyclictest0-21swapper/321:10:173
2451399503,6cyclictest41-21ksoftirqd/322:45:133
2451399502,7cyclictest0-21swapper/322:00:243
2451399502,7cyclictest0-21swapper/319:40:143
24513995020,7cyclictest41-21ksoftirqd/321:01:583
2451399500,7cyclictest41-21ksoftirqd/300:35:213
134491500,4ptp4l0-21swapper/222:43:042
134491500,4ptp4l0-21swapper/220:21:552
134491500,4ptp4l0-21swapper/121:59:071
134491500,4ptp4l0-21swapper/121:21:481
134491500,3ptp4l0-21swapper/020:49:290
134491500,3ptp4l0-21swapper/000:25:230
2451399493,8cyclictest41-21ksoftirqd/321:55:193
2451399493,7cyclictest0-21swapper/322:15:003
2451399492,7cyclictest0-21swapper/323:15:133
2451399492,6cyclictest41-21ksoftirqd/319:35:133
2451399492,6cyclictest0-21swapper/323:00:253
2451399490,6cyclictest41-21ksoftirqd/319:45:253
134491490,4ptp4l0-21swapper/321:49:163
134491490,4ptp4l0-21swapper/122:06:191
134491490,4ptp4l0-21swapper/000:07:370
134491490,4ptp4l0-21swapper/000:02:460
134491490,3ptp4l0-21swapper/019:31:220
2451399484,7cyclictest41-21ksoftirqd/322:20:143
2451399484,4cyclictest41-21ksoftirqd/320:30:253
2451399483,7cyclictest41-21ksoftirqd/320:00:263
2451399483,7cyclictest41-21ksoftirqd/319:20:143
2451399482,6cyclictest41-21ksoftirqd/319:50:153
2451399482,5cyclictest41-21ksoftirqd/321:22:263
134491480,4ptp4l0-21swapper/223:02:082
134491480,4ptp4l0-21swapper/123:04:391
134491480,3ptp4l0-21swapper/219:18:132
134491480,3ptp4l0-21swapper/020:16:530
2451399472,6cyclictest41-21ksoftirqd/322:35:213
134491470,5ptp4l0-21swapper/022:24:060
134491470,4ptp4l0-21swapper/119:24:131
134491470,4ptp4l0-21swapper/000:17:480
134491470,3ptp4l0-21swapper/023:18:270
134491470,14ptp4l0-21swapper/222:16:062
2451399464,8cyclictest41-21ksoftirqd/323:35:263
2451399464,7cyclictest41-21ksoftirqd/300:15:273
2451399453,6cyclictest0-21swapper/323:28:193
134491450,9ptp4l0-21swapper/221:41:292
134491450,9ptp4l0-21swapper/221:41:292
134491450,9ptp4l0-21swapper/020:34:030
134491450,4ptp4l10284-21apt-get00:25:132
134491450,3ptp4l0-21swapper/219:30:322
134491450,3ptp4l0-21swapper/200:01:252
134491450,3ptp4l0-21swapper/121:05:131
24512994439,3cyclictest33-21ksoftirqd/200:20:002
134491440,9ptp4l0-21swapper/220:36:562
134491440,4ptp4l20092-21apt-get20:10:121
134491440,4ptp4l0-21swapper/100:35:221
134491440,4ptp4l0-21swapper/100:07:111
134491440,3ptp4l0-21swapper/223:47:472
24512994329,11cyclictest33-21ksoftirqd/222:55:012
134491430,9ptp4l0-21swapper/220:06:352
134491430,5ptp4l12368-21df_inode22:10:160
134491430,5ptp4l12368-21df_inode22:10:160
134491430,5ptp4l0-21swapper/222:55:132
134491430,4ptp4l3978-21apt-get19:35:122
134491430,4ptp4l32468-21df21:45:150
134491430,4ptp4l2318-21gnome-shell21:29:581
134491430,4ptp4l0-21swapper/021:30:170
134491430,4ptp4l0-21swapper/021:20:330
134491430,3ptp4l9764-21apt-get22:05:112
134491430,3ptp4l0-21swapper/223:27:152
134491430,3ptp4l0-21swapper/220:42:062
134491430,10ptp4l0-21swapper/220:50:112
134491430,10ptp4l0-21swapper/220:25:172
24512994236,3cyclictest33-21ksoftirqd/223:20:002
24512994236,3cyclictest33-21ksoftirqd/221:10:002
134491420,8ptp4l0-21swapper/219:51:342
134491420,7ptp4l23820-21grep19:05:250
134491420,5ptp4l8418-21memory22:00:211
134491420,4ptp4l9515-21iostat20:55:181
134491420,4ptp4l6048-21ntp_states21:55:220
134491420,4ptp4l22150-21apt-get20:15:032
134491420,4ptp4l12373-21diskstats22:10:171
134491420,4ptp4l12373-21diskstats22:10:171
134491420,4ptp4l12275-21df22:10:152
134491420,4ptp4l12275-21df22:10:152
134491420,4ptp4l0-21swapper/319:07:093
134491420,3ptp4l16825-21apt-get23:30:132
134491420,3ptp4l0-21swapper/119:50:071
134491420,10ptp4l0-21swapper/220:30:392
134491420,10ptp4l0-21swapper/200:06:322
24512994136,3cyclictest33-21ksoftirqd/222:50:012
24512994135,4cyclictest33-21ksoftirqd/222:23:092
134491410,5ptp4l0-21swapper/223:10:282
134491410,5ptp4l0-21swapper/219:20:162
134491410,5ptp4l0-21swapper/123:10:261
134491410,5ptp4l0-21swapper/023:30:240
134491410,5ptp4l0-21swapper/022:30:170
134491410,4ptp4l9161-21iostat19:45:201
134491410,4ptp4l5379-21ls20:45:211
134491410,4ptp4l32029-21df_inode19:25:150
134491410,4ptp4l31265-21apt-get19:25:022
134491410,4ptp4l30540-21/usr/sbin/munin21:40:191
134491410,4ptp4l30540-21/usr/sbin/munin21:40:191
134491410,4ptp4l29796-21python22:45:261
134491410,4ptp4l2451199cyclictest22:30:231
134491410,4ptp4l15501-21apt-get20:00:102
134491410,4ptp4l0-21swapper/221:56:282
134491410,4ptp4l0-21swapper/220:10:232
134491410,4ptp4l0-21swapper/219:55:272
134491410,4ptp4l0-21swapper/200:24:172
134491410,4ptp4l0-21swapper/120:06:421
134491410,4ptp4l0-21swapper/022:36:250
134491410,4ptp4l0-21swapper/021:28:290
134491410,3ptp4l3375-21meminfo21:50:202
134491410,3ptp4l16439-21ls20:00:181
134491410,3ptp4l14960-21hddtemp_smartct23:25:160
134491410,2ptp4l121rcu_preempt00:31:271
24512994035,3cyclictest33-21ksoftirqd/222:40:012
24512994028,9cyclictest33-21ksoftirqd/221:35:282
134491400,5ptp4l2451199cyclictest22:15:041
134491400,5ptp4l1673-21grep19:30:121
134491400,5ptp4l0-21swapper/020:50:190
134491400,4ptp4l2637-21iostat_ios20:40:180
134491400,4ptp4l21043-21memory20:10:190
134491400,4ptp4l17943-21ntp_states23:30:251
134491400,4ptp4l0-21swapper/222:00:082
134491400,4ptp4l0-21swapper/221:45:262
134491400,4ptp4l0-21swapper/221:10:362
134491400,4ptp4l0-21swapper/221:10:362
134491400,4ptp4l0-21swapper/220:55:222
134491400,4ptp4l0-21swapper/219:40:182
134491400,4ptp4l0-21swapper/122:54:011
134491400,4ptp4l0-21swapper/121:15:211
134491400,4ptp4l0-21swapper/120:51:261
134491400,4ptp4l0-21swapper/120:30:141
134491400,4ptp4l0-21swapper/120:18:531
134491400,4ptp4l0-21swapper/119:17:151
134491400,4ptp4l0-21swapper/119:11:061
134491400,4ptp4l0-21swapper/022:19:090
134491400,4ptp4l0-21swapper/022:07:200
134491400,4ptp4l0-21swapper/021:40:190
134491400,4ptp4l0-21swapper/021:40:190
134491400,4ptp4l0-21swapper/021:18:370
134491400,4ptp4l0-21swapper/021:06:330
134491400,4ptp4l0-21swapper/020:27:380
134491400,4ptp4l0-21swapper/020:00:110
134491400,4ptp4l0-21swapper/019:58:350
134491400,4ptp4l0-21swapper/019:47:430
134491400,4ptp4l0-21swapper/019:40:060
134491400,4ptp4l0-21swapper/019:37:580
134491400,4ptp4l0-21swapper/000:21:010
134491400,3ptp4l9371-21perl20:55:150
134491400,3ptp4l9-21ksoftirqd/022:40:260
134491400,3ptp4l32658-21iostat_ios20:35:180
134491400,3ptp4l13800-21ls23:20:272
134491400,3ptp4l12767-21ls21:00:260
134491400,3ptp4l11269-21apt-get21:00:121
134491400,3ptp4l0-21swapper/023:39:480
134491400,3ptp4l0-21swapper/022:51:090
134491400,2ptp4l15918-21strings00:35:240
134491400,2ptp4l13495-21diskstats19:55:161
134491400,10ptp4l0-21swapper/100:14:021
134491390,5ptp4l0-21swapper/121:49:001
134491390,5ptp4l0-21swapper/019:16:500
134491390,4ptp4l6841-21/usr/sbin/munin19:40:181
134491390,4ptp4l0-21swapper/223:50:042
134491390,4ptp4l0-21swapper/223:40:252
134491390,4ptp4l0-21swapper/222:30:252
134491390,4ptp4l0-21swapper/222:25:172
134491390,4ptp4l0-21swapper/221:31:492
134491390,4ptp4l0-21swapper/221:00:212
134491390,4ptp4l0-21swapper/219:47:342
134491390,4ptp4l0-21swapper/123:45:181
134491390,4ptp4l0-21swapper/123:36:251
134491390,4ptp4l0-21swapper/121:50:191
134491390,4ptp4l0-21swapper/121:36:361
134491390,4ptp4l0-21swapper/120:40:181
134491390,4ptp4l0-21swapper/120:39:361
134491390,4ptp4l0-21swapper/120:29:021
134491390,4ptp4l0-21swapper/100:25:171
134491390,4ptp4l0-21swapper/100:00:221
134491390,4ptp4l0-21swapper/023:55:500
134491390,4ptp4l0-21swapper/023:47:300
134491390,4ptp4l0-21swapper/023:42:540
134491390,4ptp4l0-21swapper/023:05:160
134491390,4ptp4l0-21swapper/023:00:230
134491390,4ptp4l0-21swapper/022:29:510
134491390,4ptp4l0-21swapper/022:02:180
134491390,4ptp4l0-21swapper/021:52:380
134491390,4ptp4l0-21swapper/020:20:120
134491390,4ptp4l0-21swapper/020:06:020
134491390,4ptp4l0-21swapper/000:30:370
134491390,4ptp4l0-21swapper/000:10:270
134491390,3ptp4l12804-21iostat_ios23:20:180
134491390,3ptp4l0-21swapper/122:40:201
134491380,5ptp4l0-21swapper/023:13:200
134491380,4ptp4l0-21swapper/223:56:092
134491380,4ptp4l0-21swapper/223:05:202
134491380,4ptp4l0-21swapper/221:28:132
134491380,4ptp4l0-21swapper/200:37:402
134491380,4ptp4l0-21swapper/123:25:421
134491380,4ptp4l0-21swapper/123:15:211
134491380,4ptp4l0-21swapper/119:37:211
134491380,4ptp4l0-21swapper/100:20:291
134491380,4ptp4l0-21swapper/022:57:150
134491380,4ptp4l0-21swapper/021:10:240
134491380,4ptp4l0-21swapper/021:10:240
134491380,3ptp4l0-21swapper/221:15:172
134491380,3ptp4l0-21swapper/122:21:431
134491380,3ptp4l0-21swapper/120:20:151
134491380,3ptp4l0-21swapper/100:15:241
134491380,3ptp4l0-21swapper/022:46:370
134491370,4ptp4l0-21swapper/123:50:011
134491370,4ptp4l0-21swapper/123:41:401
134491370,4ptp4l0-21swapper/123:22:181
134491370,3ptp4l0-21swapper/123:05:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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