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2026-03-16 - 19:14
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Mon Mar 16, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491670,5ptp4l25-21ksoftirqd/112:25:261
134491650,5ptp4l0-21swapper/107:10:121
134491650,4ptp4l25391-21users09:00:291
441699621,3cyclictest22830-21ntp_states11:15:200
441699610,2cyclictest6913-21python10:40:270
441699600,5cyclictest5200-21grep08:20:140
134491600,5ptp4l18655-21apt-get08:50:023
441699590,4cyclictest27290-21grep10:15:190
134491590,3ptp4l0-21swapper/207:45:242
441699581,3cyclictest19480-21fschecks_time08:50:150
134491580,4ptp4l0-21swapper/208:20:492
134491580,3ptp4l0-21swapper/108:13:111
134491580,14ptp4l0-21swapper/210:35:272
134491570,3ptp4l0-21swapper/210:50:542
134491570,3ptp4l0-21swapper/209:10:252
441699560,3cyclictest30114-21grep11:30:240
134491560,4ptp4l0-21swapper/311:47:183
134491560,4ptp4l0-21swapper/112:06:011
134491560,3ptp4l0-21swapper/111:40:291
134491550,4ptp4l0-21swapper/312:07:173
134491550,4ptp4l0-21swapper/208:34:032
134491550,4ptp4l0-21swapper/207:32:262
134491550,4ptp4l0-21swapper/109:28:251
134491550,3ptp4l0-21swapper/208:10:182
134491550,3ptp4l0-21swapper/010:03:420
134491550,3ptp4l0-21swapper/010:03:420
134491540,4ptp4l0-21swapper/112:20:551
134491540,4ptp4l0-21swapper/110:21:581
134491540,4ptp4l0-21swapper/108:59:031
134491540,4ptp4l0-21swapper/108:24:011
134491540,3ptp4l0-21swapper/311:13:223
134491540,3ptp4l0-21swapper/212:07:042
134491540,3ptp4l0-21swapper/011:03:110
134491540,2ptp4l0-21swapper/211:56:032
134491530,5ptp4l0-21swapper/107:07:391
134491530,4ptp4l0-21swapper/208:06:422
134491530,4ptp4l0-21swapper/112:31:141
134491530,4ptp4l0-21swapper/111:58:381
134491530,4ptp4l0-21swapper/111:30:351
134491530,4ptp4l0-21swapper/111:01:061
134491530,3ptp4l0-21swapper/109:22:351
134491530,3ptp4l0-21swapper/010:30:390
134491530,13ptp4l0-21swapper/311:00:143
134491520,4ptp4l0-21swapper/312:02:193
134491520,4ptp4l0-21swapper/111:35:371
134491520,4ptp4l0-21swapper/111:17:161
134491520,4ptp4l0-21swapper/109:12:101
134491520,4ptp4l0-21swapper/107:41:311
134491520,3ptp4l0-21swapper/308:35:213
134491520,3ptp4l0-21swapper/211:27:552
134491520,3ptp4l0-21swapper/111:11:441
134491520,3ptp4l0-21swapper/011:20:500
134491520,12ptp4l0-21swapper/209:40:362
441699510,3cyclictest134491ptp4l10:45:180
134491510,4ptp4l0-21swapper/307:57:113
134491510,4ptp4l0-21swapper/010:12:380
134491510,3ptp4l0-21swapper/308:14:313
134491510,3ptp4l0-21swapper/107:36:111
134491500,4ptp4l0-21swapper/112:36:371
134491500,4ptp4l0-21swapper/110:52:321
134491500,3ptp4l0-21swapper/008:59:490
134491490,9ptp4l3362-21/usr/sbin/munin07:05:230
134491490,4ptp4l0-21swapper/111:05:241
134491490,4ptp4l0-21swapper/107:50:311
134491490,3ptp4l0-21swapper/110:41:381
134491490,14ptp4l25-21ksoftirqd/108:39:171
134491480,6ptp4l9-21ksoftirqd/012:14:580
134491480,4ptp4l0-21swapper/110:27:481
134491480,3ptp4l0-21swapper/312:11:023
134491480,3ptp4l0-21swapper/109:52:361
134491480,14ptp4l33-21ksoftirqd/210:06:052
441699476,21cyclictest134491ptp4l09:40:140
134491470,4ptp4l0-21swapper/311:43:243
134491470,4ptp4l0-21swapper/111:25:171
134491470,4ptp4l0-21swapper/111:22:241
134491470,3ptp4l121rcu_preempt10:15:221
134491470,3ptp4l0-21swapper/207:25:442
134491470,3ptp4l0-21swapper/109:39:181
134491470,13ptp4l33-21ksoftirqd/208:38:012
4416994630,14cyclictest9-21ksoftirqd/009:15:090
441699462,2cyclictest0-21swapper/007:30:120
441699460,3cyclictest28091-21timerwakeupswit11:25:280
134491460,4ptp4l0-21swapper/109:58:461
134491460,4ptp4l0-21swapper/007:50:240
134491460,3ptp4l0-21swapper/009:06:070
4419994540,3cyclictest30380-21basename09:15:013
441699450,3cyclictest6088-21latency09:30:190
134491450,4ptp4l28844-21apt-get11:30:122
134491450,3ptp4l0-21swapper/108:46:091
134491450,3ptp4l0-21swapper/108:04:011
134491450,3ptp4l0-21swapper/009:24:120
4417994438,3cyclictest32511-21cron08:10:001
134491440,9ptp4l0-21swapper/312:16:443
134491440,5ptp4l0-21swapper/310:25:123
134491440,4ptp4l8005-21apt-get11:55:110
134491440,4ptp4l0-21swapper/309:51:143
134491440,4ptp4l0-21swapper/309:38:003
134491440,4ptp4l0-21swapper/308:01:313
134491440,4ptp4l0-21swapper/209:58:062
134491440,4ptp4l0-21swapper/209:31:492
134491430,9ptp4l0-21swapper/210:02:122
134491430,9ptp4l0-21swapper/210:02:122
134491430,9ptp4l0-21swapper/209:46:262
134491430,9ptp4l0-21swapper/209:36:302
134491430,9ptp4l0-21swapper/108:34:291
134491430,9ptp4l0-21swapper/107:21:511
134491430,8ptp4l0-21swapper/210:59:562
134491430,8ptp4l0-21swapper/209:27:252
134491430,5ptp4l0-21swapper/308:40:163
134491430,5ptp4l0-21swapper/307:45:213
134491430,5ptp4l0-21swapper/012:00:220
134491430,5ptp4l0-21swapper/011:10:210
134491430,4ptp4l7487-21apt-get09:35:120
134491430,4ptp4l31443-21df_inode11:35:140
134491430,4ptp4l2713-21apt-get08:15:113
134491430,4ptp4l16230-21apt-get07:35:130
134491430,4ptp4l14818-21iostat_ios08:40:181
134491430,4ptp4l14456-21df08:40:130
134491430,4ptp4l0-21swapper/209:16:542
134491430,4ptp4l0-21swapper/208:44:452
134491430,3ptp4l7335-21apt-get08:25:142
134491430,3ptp4l31139-21apt-get11:35:122
134491430,3ptp4l24176-21apt-get12:30:103
134491430,3ptp4l12460-21apt-get10:55:110
134491430,3ptp4l0-21swapper/109:15:121
134491430,3ptp4l0-21swapper/010:27:460
134491430,10ptp4l0-21swapper/007:26:350
134491420,5ptp4l0-21swapper/012:15:180
134491420,5ptp4l0-21swapper/009:10:190
134491420,5ptp4l0-21swapper/008:25:260
134491420,5ptp4l0-21swapper/007:45:200
134491420,5ptp4l0-21swapper/007:10:110
134491420,4ptp4l9709-21hddtemp_smartct07:20:162
134491420,4ptp4l26862-21irqstats09:05:201
134491420,4ptp4l17267-21apt-get12:15:132
134491420,4ptp4l17167-21iostat08:45:180
134491420,4ptp4l0-21swapper/310:35:253
134491420,4ptp4l0-21swapper/207:55:242
134491420,4ptp4l0-21swapper/110:57:471
134491420,3ptp4l28700-21apt-get10:20:120
134491420,3ptp4l24176-21apt-get12:30:112
134491420,3ptp4l0-21swapper/311:23:453
134491420,3ptp4l0-21swapper/108:51:231
134491420,3ptp4l0-21swapper/009:56:160
134491420,3ptp4l0-21swapper/007:19:350
134491410,7ptp4l0-21swapper/210:24:172
134491410,5ptp4l0-21swapper/310:40:113
134491410,5ptp4l0-21swapper/309:20:253
134491410,5ptp4l0-21swapper/307:53:213
134491410,5ptp4l0-21swapper/212:20:122
134491410,5ptp4l0-21swapper/208:50:232
134491410,5ptp4l0-21swapper/011:40:180
134491410,5ptp4l0-21swapper/010:05:140
134491410,5ptp4l0-21swapper/008:10:260
134491410,4ptp4l5711-21apt-get11:50:120
134491410,4ptp4l5571-21apt-get10:40:132
134491410,4ptp4l4538-21ntp_states11:45:241
134491410,4ptp4l22001-21df10:05:141
134491410,4ptp4l1301-21snmpd12:21:220
134491410,4ptp4l12694-21ntp_states07:25:223
134491410,4ptp4l0-21swapper/308:25:123
134491410,4ptp4l0-21swapper/211:53:542
134491410,4ptp4l0-21swapper/211:45:162
134491410,4ptp4l0-21swapper/210:11:102
134491410,4ptp4l0-21swapper/208:46:022
134491410,4ptp4l0-21swapper/207:40:012
134491410,4ptp4l0-21swapper/111:51:101
134491410,4ptp4l0-21swapper/012:34:130
134491410,4ptp4l0-21swapper/007:56:020
134491410,3ptp4l21879-21apt-get12:25:100
134491400,5ptp4l0-21swapper/311:35:133
134491400,5ptp4l0-21swapper/009:50:170
134491400,4ptp4l8750-21sshd07:19:351
134491400,4ptp4l0-21swapper/311:55:293
134491400,4ptp4l0-21swapper/311:32:303
134491400,4ptp4l0-21swapper/311:16:273
134491400,4ptp4l0-21swapper/310:45:143
134491400,4ptp4l0-21swapper/309:45:133
134491400,4ptp4l0-21swapper/309:40:033
134491400,4ptp4l0-21swapper/308:34:193
134491400,4ptp4l0-21swapper/308:20:163
134491400,4ptp4l0-21swapper/307:30:113
134491400,4ptp4l0-21swapper/212:10:322
134491400,4ptp4l0-21swapper/212:04:392
134491400,4ptp4l0-21swapper/211:21:422
134491400,4ptp4l0-21swapper/211:10:072
134491400,4ptp4l0-21swapper/210:32:532
134491400,4ptp4l0-21swapper/210:26:392
134491400,4ptp4l0-21swapper/210:16:432
134491400,4ptp4l0-21swapper/209:50:482
134491400,4ptp4l0-21swapper/209:20:222
134491400,4ptp4l0-21swapper/209:00:072
134491400,4ptp4l0-21swapper/208:55:582
134491400,4ptp4l0-21swapper/207:40:412
134491400,4ptp4l0-21swapper/110:35:271
134491400,4ptp4l0-21swapper/110:12:181
134491400,4ptp4l0-21swapper/109:45:451
134491400,4ptp4l0-21swapper/108:27:091
134491400,4ptp4l0-21swapper/012:35:150
134491400,4ptp4l0-21swapper/011:05:200
134491400,4ptp4l0-21swapper/010:35:170
134491400,4ptp4l0-21swapper/009:25:200
134491400,4ptp4l0-21swapper/008:38:260
134491400,4ptp4l0-21swapper/007:40:210
134491400,4ptp4l0-21swapper/007:20:170
134491400,3ptp4l8817-21meminfo10:45:191
134491400,3ptp4l4496-21/usr/sbin/munin11:45:230
134491400,3ptp4l4223-21ls08:15:280
134491400,3ptp4l3291-21iostat_ios08:15:171
134491400,3ptp4l31033-21iostat08:05:173
134491400,3ptp4l25150-21ssh09:00:260
134491400,3ptp4l20228-21memory10:00:201
134491400,3ptp4l20228-21memory10:00:201
134491400,3ptp4l15123-21df12:10:141
134491400,3ptp4l14301-21hddtemp_smartct07:30:141
134491400,3ptp4l12827-21df12:05:140
134491400,3ptp4l11475-21users09:40:291
134491400,3ptp4l0-21swapper/208:01:402
134491400,2ptp4l29214-21strings08:00:230
134491390,5ptp4l0-21swapper/308:46:383
134491390,5ptp4l0-21swapper/008:06:280
134491390,4ptp4l6149-21sed11:50:163
134491390,4ptp4l0-21swapper/312:37:573
134491390,4ptp4l0-21swapper/312:27:353
134491390,4ptp4l0-21swapper/310:59:223
134491390,4ptp4l0-21swapper/310:19:343
134491390,4ptp4l0-21swapper/310:12:223
134491390,4ptp4l0-21swapper/309:58:023
134491390,4ptp4l0-21swapper/309:30:173
134491390,4ptp4l0-21swapper/309:25:183
134491390,4ptp4l0-21swapper/309:17:543
134491390,4ptp4l0-21swapper/307:41:553
134491390,4ptp4l0-21swapper/212:37:562
134491390,4ptp4l0-21swapper/212:25:162
134491390,4ptp4l0-21swapper/211:42:412
134491390,4ptp4l0-21swapper/211:06:162
134491390,4ptp4l0-21swapper/211:01:422
134491390,4ptp4l0-21swapper/210:45:152
134491390,4ptp4l0-21swapper/209:06:542
134491390,4ptp4l0-21swapper/207:15:232
134491390,4ptp4l0-21swapper/207:10:282
134491390,4ptp4l0-21swapper/112:17:161
134491390,4ptp4l0-21swapper/112:03:241
134491390,4ptp4l0-21swapper/109:30:391
134491390,4ptp4l0-21swapper/107:47:561
134491390,4ptp4l0-21swapper/107:25:241
134491390,4ptp4l0-21swapper/010:50:140
134491390,4ptp4l0-21swapper/009:46:200
134491390,4ptp4l0-21swapper/008:30:200
134491390,3ptp4l0-21swapper/312:20:253
134491390,3ptp4l0-21swapper/310:33:583
134491390,3ptp4l0-21swapper/207:50:212
134491390,2ptp4l6727-21/usr/sbin/munin07:15:243
134491380,4ptp4l0-21swapper/311:27:533
134491380,4ptp4l0-21swapper/310:50:193
134491380,4ptp4l0-21swapper/310:20:583
134491380,4ptp4l0-21swapper/309:00:093
134491380,4ptp4l0-21swapper/308:56:323
134491380,4ptp4l0-21swapper/307:35:233
134491380,4ptp4l0-21swapper/208:15:262
134491380,4ptp4l0-21swapper/110:31:461
134491380,3ptp4l0-21swapper/310:01:023
134491380,3ptp4l0-21swapper/310:01:023
134491380,3ptp4l0-21swapper/307:21:413
134491380,3ptp4l0-21swapper/307:10:303
134491380,3ptp4l0-21swapper/211:16:262
134491380,3ptp4l0-21swapper/107:55:551
134491370,4ptp4l0-21swapper/310:06:063
134491370,3ptp4l0-21swapper/311:06:583
134491360,4ptp4l0-21swapper/309:06:563
34202235,11sleep20-21swapper/207:05:252
21412214,11sleep30-21swapper/307:05:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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