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2026-06-13 - 08:33
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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 Jun 13, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491730,10ptp4l26579-21hddtemp_smartct19:05:150
28487997028,5cyclictest41-21ksoftirqd/323:11:323
28485996733,8cyclictest25-21ksoftirqd/120:03:241
28485996732,9cyclictest25-21ksoftirqd/122:40:011
28487996336,3cyclictest41-21ksoftirqd/300:35:003
28487996331,5cyclictest41-21ksoftirqd/320:54:533
28487996326,5cyclictest41-21ksoftirqd/319:39:153
28485996332,8cyclictest25-21ksoftirqd/121:50:141
28485996332,5cyclictest25-21ksoftirqd/123:15:181
28485996328,7cyclictest25-21ksoftirqd/123:40:231
28485996325,4cyclictest25-21ksoftirqd/123:00:151
134491630,9ptp4l0-21swapper/200:32:212
28485996233,8cyclictest25-21ksoftirqd/122:00:221
28487996126,4cyclictest41-21ksoftirqd/320:32:523
28485996022,8cyclictest25-21ksoftirqd/122:45:281
28485996018,8cyclictest25-21ksoftirqd/120:20:221
134491600,23ptp4l33-21ksoftirqd/220:50:202
28487995928,10cyclictest41-21ksoftirqd/319:11:593
28487995925,3cyclictest41-21ksoftirqd/320:02:503
28485995930,7cyclictest25-21ksoftirqd/120:05:161
28485995925,4cyclictest25-21ksoftirqd/122:20:191
134691590,9getstats0-21swapper/223:55:502
28487995826,4cyclictest41-21ksoftirqd/321:46:113
28487995825,4cyclictest41-21ksoftirqd/300:03:243
28487995825,4cyclictest41-21ksoftirqd/300:03:233
28485995829,3cyclictest25-21ksoftirqd/119:10:271
28485995826,4cyclictest25-21ksoftirqd/120:40:231
28485995826,3cyclictest25-21ksoftirqd/121:08:271
134491580,4ptp4l0-21swapper/122:26:201
68462570,2sleep06849-21cut20:40:170
28487995723,4cyclictest41-21ksoftirqd/321:37:333
28487995720,10cyclictest41-21ksoftirqd/319:20:013
28485995729,3cyclictest25-21ksoftirqd/121:19:111
28485995725,4cyclictest25-21ksoftirqd/100:35:001
28485995725,3cyclictest25-21ksoftirqd/100:20:271
28485995717,7cyclictest25-21ksoftirqd/100:14:111
266492570,3sleep1231rcuc/120:15:111
134491570,4ptp4l0-21swapper/121:11:461
28487995624,5cyclictest41-21ksoftirqd/320:24:153
28485995631,3cyclictest25-21ksoftirqd/121:40:271
28485995626,3cyclictest25-21ksoftirqd/123:35:121
28485995626,2cyclictest25-21ksoftirqd/119:38:321
28485995622,10cyclictest25-21ksoftirqd/119:30:271
28485995619,15cyclictest25-21ksoftirqd/119:50:191
134491560,3ptp4l0-21swapper/022:55:210
134491560,2ptp4l0-21swapper/019:35:110
28487995523,4cyclictest41-21ksoftirqd/321:23:453
28487995518,6cyclictest41-21ksoftirqd/320:19:593
28485995525,3cyclictest25-21ksoftirqd/119:55:201
28485995523,6cyclictest25-21ksoftirqd/121:35:141
28485995521,7cyclictest25-21ksoftirqd/123:25:251
28485995519,7cyclictest25-21ksoftirqd/100:00:001
28485995518,5cyclictest25-21ksoftirqd/121:55:221
134491550,4ptp4l0-21swapper/221:49:042
134491550,4ptp4l0-21swapper/023:50:200
28487995427,7cyclictest41-21ksoftirqd/321:05:013
28487995424,7cyclictest41-21ksoftirqd/323:35:233
28487995423,3cyclictest41-21ksoftirqd/320:44:303
28487995422,11cyclictest41-21ksoftirqd/323:02:283
28487995421,4cyclictest41-21ksoftirqd/323:45:193
28487995420,4cyclictest41-21ksoftirqd/320:06:483
28487995419,4cyclictest41-21ksoftirqd/322:00:253
28487995418,4cyclictest41-21ksoftirqd/319:51:043
28485995430,3cyclictest25-21ksoftirqd/123:31:521
28485995430,3cyclictest25-21ksoftirqd/123:31:521
28485995430,3cyclictest25-21ksoftirqd/122:34:051
28485995425,7cyclictest25-21ksoftirqd/100:05:011
28485995425,7cyclictest25-21ksoftirqd/100:05:011
28485995422,7cyclictest25-21ksoftirqd/122:19:201
28485995421,9cyclictest25-21ksoftirqd/123:05:191
28485995421,7cyclictest25-21ksoftirqd/100:35:161
134491540,4ptp4l0-21swapper/219:16:172
28487995324,3cyclictest41-21ksoftirqd/321:53:453
28487995323,8cyclictest41-21ksoftirqd/321:17:433
28487995320,3cyclictest41-21ksoftirqd/300:35:173
2848599537,2cyclictest25-21ksoftirqd/123:50:201
28485995326,3cyclictest25-21ksoftirqd/122:53:431
28485995325,9cyclictest25-21ksoftirqd/120:30:221
28485995324,6cyclictest25-21ksoftirqd/119:20:241
28485995322,3cyclictest25-21ksoftirqd/121:30:151
28485995319,6cyclictest25-21ksoftirqd/100:05:221
28485995316,8cyclictest25-21ksoftirqd/123:25:001
134491530,4ptp4l0-21swapper/220:24:082
28487995226,6cyclictest41-21ksoftirqd/322:30:193
28487995221,5cyclictest41-21ksoftirqd/319:21:253
28487995221,3cyclictest41-21ksoftirqd/322:50:193
28487995221,3cyclictest41-21ksoftirqd/322:23:183
28487995219,4cyclictest41-21ksoftirqd/320:25:123
28487995219,3cyclictest41-21ksoftirqd/321:08:353
28485995228,3cyclictest25-21ksoftirqd/121:03:541
28485995219,8cyclictest25-21ksoftirqd/121:25:221
28485995216,9cyclictest25-21ksoftirqd/120:52:171
18932520,4sleep00-21swapper/021:40:160
134491520,4ptp4l0-21swapper/223:24:192
134491520,4ptp4l0-21swapper/222:27:432
134491520,4ptp4l0-21swapper/221:43:472
134491520,3ptp4l0-21swapper/222:37:112
28487995123,6cyclictest41-21ksoftirqd/319:28:303
28487995123,3cyclictest41-21ksoftirqd/322:29:403
28487995121,8cyclictest41-21ksoftirqd/323:30:173
28487995121,8cyclictest41-21ksoftirqd/323:30:173
28487995121,7cyclictest41-21ksoftirqd/323:05:223
28487995120,7cyclictest41-21ksoftirqd/320:10:263
28487995118,9cyclictest41-21ksoftirqd/320:40:013
28487995118,6cyclictest41-21ksoftirqd/319:55:183
28487995118,4cyclictest41-21ksoftirqd/319:45:183
28487995118,4cyclictest41-21ksoftirqd/300:12:123
28487995118,3cyclictest41-21ksoftirqd/319:32:313
28485995129,3cyclictest25-21ksoftirqd/100:29:181
28485995127,3cyclictest25-21ksoftirqd/120:55:041
28485995126,6cyclictest25-21ksoftirqd/121:21:551
28485995125,3cyclictest25-21ksoftirqd/119:48:481
28485995119,3cyclictest25-21ksoftirqd/120:27:031
134491510,4ptp4l0-21swapper/222:00:562
134491510,4ptp4l0-21swapper/221:56:572
134491510,4ptp4l0-21swapper/221:39:392
134491510,4ptp4l0-21swapper/221:22:542
134491510,4ptp4l0-21swapper/219:28:022
28487995016,8cyclictest41-21ksoftirqd/323:20:123
2848599502,3cyclictest121rcu_preempt20:35:211
28485995018,8cyclictest25-21ksoftirqd/119:25:281
134491500,7ptp4l33-21ksoftirqd/200:20:252
134491500,4ptp4l0-21swapper/223:42:072
134491500,4ptp4l0-21swapper/223:07:592
134491500,4ptp4l0-21swapper/219:40:442
134491500,4ptp4l0-21swapper/219:22:512
134491500,4ptp4l0-21swapper/200:35:362
134491500,4ptp4l0-21swapper/123:45:021
28487994917,7cyclictest41-21ksoftirqd/322:10:003
28487994916,8cyclictest41-21ksoftirqd/321:10:163
28487994915,9cyclictest41-21ksoftirqd/300:05:223
28487994915,4cyclictest41-21ksoftirqd/300:29:413
28487994910,9cyclictest41-21ksoftirqd/320:55:203
2848599495,2cyclictest25-21ksoftirqd/100:19:591
2848599492,8cyclictest25-21ksoftirqd/122:55:181
2848599491,3cyclictest121rcu_preempt22:05:141
134491490,4ptp4l0-21swapper/322:58:493
134491490,4ptp4l0-21swapper/220:31:072
134491490,4ptp4l0-21swapper/122:11:411
28487994820,4cyclictest41-21ksoftirqd/322:15:393
28487994815,3cyclictest41-21ksoftirqd/322:35:563
2848599481,3cyclictest25-21ksoftirqd/120:10:231
134691480,13getstats0-21swapper/020:25:090
134491480,4ptp4l0-21swapper/121:47:461
134491480,3ptp4l0-21swapper/221:34:032
134491480,3ptp4l0-21swapper/122:40:021
2848799477,8cyclictest41-21ksoftirqd/321:34:083
28487994735,3cyclictest41-21ksoftirqd/322:45:143
2848799472,2cyclictest121rcu_preempt20:45:183
28487994717,6cyclictest41-21ksoftirqd/323:55:133
28487994716,8cyclictest41-21ksoftirqd/321:40:143
2848599474,7cyclictest25-21ksoftirqd/119:15:271
28485994727,3cyclictest25-21ksoftirqd/120:47:171
134491470,4ptp4l0-21swapper/223:37:062
134491470,4ptp4l0-21swapper/222:48:092
2848799463,3cyclictest41-21ksoftirqd/323:15:173
28487994613,9cyclictest41-21ksoftirqd/323:30:003
2848599461,8cyclictest25-21ksoftirqd/119:42:011
134491460,4ptp4l24588-21apt-get22:30:092
28487994520,6cyclictest41-21ksoftirqd/323:40:263
2848799451,2cyclictest121rcu_preempt23:50:243
2848599452,7cyclictest25-21ksoftirqd/123:10:231
28487994415,8cyclictest41-21ksoftirqd/321:55:263
28487994415,7cyclictest41-21ksoftirqd/319:40:143
28487994413,7cyclictest41-21ksoftirqd/300:20:243
134691440,11getstats0-21swapper/000:17:370
134491440,9ptp4l0-21swapper/019:21:010
134491440,3ptp4l11318-21apt-get00:20:120
134491440,3ptp4l0-21swapper/222:57:302
134491440,10ptp4l0-21swapper/221:06:392
134491440,10ptp4l0-21swapper/021:14:080
134691430,11getstats0-21swapper/023:33:280
134691430,11getstats0-21swapper/023:33:280
134491430,9ptp4l0-21swapper/220:06:522
134491430,9ptp4l0-21swapper/219:51:162
134491430,7ptp4l0-21swapper/019:10:000
134491430,5ptp4l9-21ksoftirqd/021:05:390
134491430,10ptp4l0-21swapper/219:49:242
2848799429,3cyclictest41-21ksoftirqd/322:40:143
28487994236,3cyclictest41-21ksoftirqd/321:25:203
28487994226,8cyclictest41-21ksoftirqd/300:18:523
134691420,11getstats0-21swapper/021:58:520
134691420,10getstats0-21swapper/021:31:050
134691420,10getstats0-21swapper/019:52:010
134491420,9ptp4l0-21swapper/223:54:512
134491420,9ptp4l0-21swapper/222:51:592
134491420,9ptp4l0-21swapper/219:11:202
134491420,9ptp4l0-21swapper/200:12:562
134491420,8ptp4l0-21swapper/222:18:372
134491420,8ptp4l0-21swapper/220:19:182
134491420,8ptp4l0-21swapper/220:02:312
134491420,8ptp4l0-21swapper/219:37:102
134491420,5ptp4l8082-21apt-get20:45:030
134491420,4ptp4l6340-21diskstats20:40:142
134491420,4ptp4l0-21swapper/220:57:532
134491420,4ptp4l0-21swapper/022:12:080
134491420,3ptp4l2318-21gnome-shell20:01:590
134691410,10getstats0-21swapper/023:43:330
134691410,10getstats0-21swapper/019:33:450
134691410,10getstats0-21swapper/000:29:020
134491410,9ptp4l0-21swapper/220:11:472
134491410,8ptp4l0-21swapper/220:47:072
134491410,8ptp4l0-21swapper/219:32:292
134491410,5ptp4l15877-21hddtemp_smartct21:00:150
134491410,5ptp4l0-21swapper/119:05:201
134491410,4ptp4l3805-21diskstats20:35:130
134491410,4ptp4l0-21swapper/221:50:092
134491410,4ptp4l0-21swapper/219:55:222
134491410,3ptp4l31516-21apt-get22:45:120
134491410,3ptp4l3126-21ls00:00:350
134491410,3ptp4l3126-21ls00:00:350
134491410,3ptp4l17859-21apt-get23:25:122
46198400,4rtkit-daemon0-21swapper/221:29:532
28487994035,3cyclictest41-21ksoftirqd/322:13:293
28484994013,24cyclictest9630-21munin-node19:55:120
134491400,6ptp4l0-21swapper/020:34:380
134491400,5ptp4l0-21swapper/023:05:220
134491400,5ptp4l0-21swapper/020:50:090
134491400,4ptp4l24867-21df21:20:120
134491400,4ptp4l20085-21users00:35:260
134491400,4ptp4l0-21swapper/222:10:402
134491400,4ptp4l0-21swapper/221:15:332
134491400,4ptp4l0-21swapper/220:38:102
134491400,4ptp4l0-21swapper/200:25:402
134491400,4ptp4l0-21swapper/200:19:072
134491400,4ptp4l0-21swapper/200:00:322
134491400,4ptp4l0-21swapper/200:00:322
134491400,4ptp4l0-21swapper/022:53:460
134491400,3ptp4l27191-21df_inode22:35:120
134491400,3ptp4l23865-21ls22:25:280
134491400,3ptp4l20571-21iostat_ios22:20:190
134491400,3ptp4l0-21swapper/000:10:170
28484993914,22cyclictest25153-21sh22:30:140
134491390,5ptp4l27214-21grep23:45:130
134491390,4ptp4l0-21swapper/223:15:262
134491390,4ptp4l0-21swapper/222:40:472
134491390,4ptp4l0-21swapper/221:11:412
134491390,4ptp4l0-21swapper/221:02:312
134491390,4ptp4l0-21swapper/220:27:122
134491390,4ptp4l0-21swapper/200:05:082
134491390,4ptp4l0-21swapper/023:55:240
134491390,4ptp4l0-21swapper/023:24:290
134491390,4ptp4l0-21swapper/022:15:380
134491390,4ptp4l0-21swapper/021:28:180
134491390,4ptp4l0-21swapper/020:15:460
134491390,4ptp4l0-21swapper/019:45:240
134491390,4ptp4l0-21swapper/019:25:210
134491390,4ptp4l0-21swapper/000:33:230
134491390,3ptp4l32127-21iostat_ios21:35:180
134491390,3ptp4l29784-21iostat_ios22:40:170
134491390,3ptp4l13134-21apt-get20:55:110
134491390,3ptp4l0-21swapper/023:17:430
134491380,5ptp4l0-21swapper/020:05:260
134491380,4ptp4l0-21swapper/223:48:132
134491380,4ptp4l0-21swapper/223:30:202
134491380,4ptp4l0-21swapper/223:30:202
134491380,4ptp4l0-21swapper/223:10:142
134491380,4ptp4l0-21swapper/223:02:442
134491380,4ptp4l0-21swapper/222:21:422
134491380,4ptp4l0-21swapper/023:28:010
134491380,4ptp4l0-21swapper/023:00:370
134491380,4ptp4l0-21swapper/022:05:120
134491380,4ptp4l0-21swapper/021:16:440
134491380,4ptp4l0-21swapper/020:20:140
134491380,4ptp4l0-21swapper/020:10:380
134491380,3ptp4l6955-21cut21:50:190
134491380,3ptp4l32481-21users19:15:270
134491380,3ptp4l22753-21df_inode23:35:150
134491380,3ptp4l0-21swapper/023:11:220
134491380,3ptp4l0-21swapper/022:00:410
134491380,3ptp4l0-21swapper/019:40:240
134491380,3ptp4l0-21swapper/000:05:220
134491370,4ptp4l0-21swapper/021:45:120
134491370,3ptp4l0-21swapper/222:07:502
46198310,5rtkit-daemon0-21swapper/319:05:343
278712113,4sleep20-21swapper/219:05:572
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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