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2026-05-10 - 18:32
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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 Sun May 10, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2941321530,6sleep12367499cyclictest08:30:201
55892780,5sleep20-21swapper/207:40:142
134491690,4ptp4l121rcu_preempt07:05:153
134491620,4ptp4l5736-21idleruntime10:00:161
134491620,4ptp4l0-21swapper/010:19:570
134491590,4ptp4l0-21swapper/309:32:303
2367399582,15cyclictest15340-21cat08:00:190
2367399581,14cyclictest0-21swapper/012:20:180
134491580,4ptp4l0-21swapper/308:35:183
134491580,3ptp4l0-21swapper/107:45:241
134491570,4ptp4l0-21swapper/111:25:161
134491570,3ptp4l0-21swapper/307:10:113
134491570,3ptp4l0-21swapper/111:30:271
134491570,3ptp4l0-21swapper/109:50:051
134491570,3ptp4l0-21swapper/012:09:570
2367399562,11cyclictest8443-21grep07:45:190
2367399561,12cyclictest31838-21cut10:55:210
232892560,5sleep10-21swapper/111:45:251
134491560,4ptp4l0-21swapper/108:55:191
2367399558,7cyclictest0-21swapper/007:35:220
2367399556,7cyclictest26801-21irqrtprio09:35:190
2367399551,10cyclictest18996-21sed11:35:270
22182550,7sleep32367699cyclictest09:50:253
218392550,3sleep20-21swapper/207:05:162
134491550,4ptp4l0-21swapper/009:45:160
134491550,3ptp4l0-21swapper/107:59:161
2367399548,10cyclictest0-21swapper/009:50:230
2367399546,7cyclictest0-21swapper/008:10:290
2367399544,7cyclictest13080-21latency_hist12:35:000
134491540,4ptp4l0-21swapper/111:51:181
134491540,4ptp4l0-21swapper/110:40:571
134491540,4ptp4l0-21swapper/109:28:091
134491540,3ptp4l0-21swapper/310:47:013
134491540,3ptp4l0-21swapper/110:24:561
2367399537,6cyclictest0-21swapper/008:25:250
2367399534,9cyclictest5910-21irqrtprio10:00:190
2367399532,10cyclictest30438-21grep12:00:230
2367399531,9cyclictest2319-21mailstats11:00:240
134491530,4ptp4l0-21swapper/310:31:533
134491530,4ptp4l0-21swapper/309:17:373
134491530,4ptp4l0-21swapper/308:08:063
134491530,4ptp4l0-21swapper/109:58:401
134491520,4ptp4l0-21swapper/109:19:461
134491520,11ptp4l0-21swapper/212:05:322
2367399517,7cyclictest0-21swapper/009:20:250
2367399515,6cyclictest12592-21idleruntime07:55:160
134491510,4ptp4l0-21swapper/307:22:583
134491510,4ptp4l0-21swapper/209:31:542
134491510,4ptp4l0-21swapper/111:39:441
134491510,4ptp4l0-21swapper/109:00:401
134491510,3ptp4l0-21swapper/308:30:273
134491510,3ptp4l0-21swapper/307:25:163
2367399508,6cyclictest0-21swapper/010:32:340
2367399506,7cyclictest12707-21fschecks_time09:05:170
2367399505,14cyclictest27625-21phc2sys10:45:230
2367399503,6cyclictest0-21swapper/011:40:150
134491500,8ptp4l0-21swapper/109:08:311
134491500,4ptp4l0-21swapper/310:38:273
134491500,4ptp4l0-21swapper/210:58:342
134491500,4ptp4l0-21swapper/210:37:102
134491500,3ptp4l0-21swapper/209:37:362
134491500,3ptp4l0-21swapper/208:36:512
2367399497,6cyclictest0-21swapper/007:50:240
2367399495,6cyclictest19332-21cut10:30:000
2367399495,4cyclictest0-21swapper/012:15:000
2367399491,11cyclictest10813-21cat10:10:190
134491490,9ptp4l0-21swapper/211:26:402
134491490,5ptp4l0-21swapper/007:05:190
134491490,4ptp4l0-21swapper/112:20:481
134491490,4ptp4l0-21swapper/111:59:141
134491490,4ptp4l0-21swapper/111:59:131
134491490,4ptp4l0-21swapper/111:00:121
134491490,3ptp4l0-21swapper/208:45:542
134491490,12ptp4l0-21swapper/210:05:192
2367399485,6cyclictest8894-21gzip10:05:240
2367399483,5cyclictest11620-21ntpq11:20:210
2367399481,17cyclictest7682-21latency_hist11:15:000
134491480,7ptp4l0-21swapper/212:27:082
134491480,4ptp4l0-21swapper/308:51:133
134491480,4ptp4l0-21swapper/208:18:172
134491480,4ptp4l0-21swapper/207:15:112
134491480,3ptp4l0-21swapper/308:01:553
134491470,4ptp4l0-21swapper/311:10:003
134491470,3ptp4l0-21swapper/310:04:033
134491470,3ptp4l0-21swapper/208:26:052
23674994633,3cyclictest25-21ksoftirqd/110:50:121
2367399466,6cyclictest0-21swapper/010:35:250
2367399466,5cyclictest9-21ksoftirqd/012:25:130
2367399462,6cyclictest9-21ksoftirqd/009:55:260
134491460,4ptp4l0-21swapper/310:23:103
134491460,3ptp4l0-21swapper/212:22:082
134491460,3ptp4l0-21swapper/211:20:092
134491460,3ptp4l0-21swapper/207:52:112
134491460,11ptp4l0-21swapper/310:14:273
23674994540,3cyclictest25-21ksoftirqd/111:15:001
2367399457,5cyclictest26753-21cat11:55:000
2367399452,9cyclictest24445-21iostat_ios08:20:180
2367399452,18cyclictest24086-21sed09:30:140
2367399450,7cyclictest16885-21apt-get09:15:120
134491450,5ptp4l0-21swapper/208:30:262
134491450,4ptp4l0-21swapper/109:30:231
134491450,3ptp4l0-21swapper/211:07:262
134491450,3ptp4l0-21swapper/108:09:361
134491450,10ptp4l0-21swapper/309:11:313
23674994438,3cyclictest25-21ksoftirqd/107:45:001
2367399446,6cyclictest0-21swapper/011:25:230
2367399446,6cyclictest0-21swapper/011:07:470
2367399445,6cyclictest0-21swapper/007:15:260
134491440,9ptp4l0-21swapper/210:32:122
134491440,9ptp4l0-21swapper/208:22:482
134491440,9ptp4l0-21swapper/009:42:240
134491440,5ptp4l0-21swapper/309:25:113
134491440,4ptp4l0-21swapper/111:06:081
134491440,4ptp4l0-21swapper/109:22:181
134491440,4ptp4l0-21swapper/107:53:281
134491440,3ptp4l0-21swapper/207:32:422
134491440,3ptp4l0-21swapper/007:34:040
134491440,10ptp4l0-21swapper/208:15:012
23674994338,3cyclictest25-21ksoftirqd/107:25:011
2367399436,6cyclictest0-21swapper/007:40:160
134491430,9ptp4l0-21swapper/210:15:432
134491430,9ptp4l0-21swapper/010:53:200
134491430,8ptp4l0-21swapper/210:46:122
134491430,6ptp4l8289-21/usr/sbin/munin11:15:153
134491430,5ptp4l8252-21iostat_ios08:55:200
134491430,5ptp4l0-21swapper/312:35:203
134491430,5ptp4l0-21swapper/307:45:113
134491430,4ptp4l4811-21ntp_states12:15:230
134491430,4ptp4l26096-21apt-get09:35:121
134491430,4ptp4l22578-21iostat11:45:180
134491430,4ptp4l11931-21ls11:20:241
134491430,4ptp4l0-21swapper/307:51:233
134491430,4ptp4l0-21swapper/212:30:392
134491430,3ptp4l0-21swapper/309:42:343
23674994238,3cyclictest25-21ksoftirqd/110:40:001
23674994237,3cyclictest25-21ksoftirqd/108:20:001
134491420,9ptp4l0-21swapper/208:57:402
134491420,9ptp4l0-21swapper/208:03:242
134491420,8ptp4l0-21swapper/211:37:422
134491420,8ptp4l0-21swapper/210:22:102
134491420,5ptp4l9-21ksoftirqd/008:36:000
134491420,5ptp4l0-21swapper/312:00:123
134491420,5ptp4l0-21swapper/310:50:223
134491420,5ptp4l0-21swapper/310:05:163
134491420,5ptp4l0-21swapper/308:25:203
134491420,5ptp4l0-21swapper/008:45:140
134491420,5ptp4l0-21swapper/008:40:200
134491420,4ptp4l5628-21apt-get11:10:122
134491420,4ptp4l30613-21apt-get07:25:112
134491420,4ptp4l28982-21iostat_ios09:40:181
134491420,4ptp4l21501-21apt-get09:25:122
134491420,4ptp4l15949-21irqstats11:30:200
134491420,3ptp4l0-21swapper/312:30:013
46198410,4rtkit-daemon0-21swapper/211:50:472
23676994135,3cyclictest41-21ksoftirqd/310:00:003
23674994137,2cyclictest25-21ksoftirqd/112:25:171
23674994136,3cyclictest25-21ksoftirqd/110:55:161
23674994136,3cyclictest25-21ksoftirqd/110:30:001
23674994134,5cyclictest25-21ksoftirqd/112:10:401
2367399414,6cyclictest0-21swapper/007:22:030
2367399412,7cyclictest24273-21iostat_ios07:10:170
2367399411,9cyclictest0-21swapper/007:25:130
134491410,9ptp4l0-21swapper/210:01:052
134491410,9ptp4l0-21swapper/209:10:342
134491410,8ptp4l0-21swapper/211:03:292
134491410,7ptp4l0-21swapper/211:15:122
134491410,5ptp4l12280-21/usr/sbin/munin09:05:303
134491410,5ptp4l0-21swapper/112:05:191
134491410,5ptp4l0-21swapper/111:40:121
134491410,5ptp4l0-21swapper/110:10:141
134491410,4ptp4l27839-21users08:25:281
134491410,4ptp4l27421-21meminfo10:45:191
134491410,4ptp4l27130-21df_inode11:55:140
134491410,4ptp4l27130-21df_inode11:55:140
134491410,4ptp4l10055-21apt-get11:20:033
134491410,4ptp4l0-21swapper/308:45:563
134491410,4ptp4l0-21swapper/212:35:212
134491410,4ptp4l0-21swapper/209:24:082
134491410,4ptp4l0-21swapper/207:12:562
134491410,4ptp4l0-21swapper/112:32:081
134491410,4ptp4l0-21swapper/009:25:130
134491410,4ptp4l0-21swapper/008:09:110
134491410,3ptp4l2867-21apt-get07:35:133
134491410,3ptp4l0-21swapper/207:48:472
23675994034,4cyclictest33-21ksoftirqd/211:34:382
23674994035,3cyclictest25-21ksoftirqd/112:40:001
23674994035,3cyclictest25-21ksoftirqd/111:20:001
23674994034,3cyclictest25-21ksoftirqd/108:15:001
2367399403,9cyclictest25493-21systemctl10:40:250
2367399400,7cyclictest8187-21df11:15:130
134491400,5ptp4l27072-21netstat07:15:221
134491400,5ptp4l0-21swapper/307:15:153
134491400,5ptp4l0-21swapper/008:34:100
134491400,4ptp4l23388-21apt-get08:20:031
134491400,4ptp4l1794-21ntp_states08:40:232
134491400,4ptp4l0-21swapper/312:25:133
134491400,4ptp4l0-21swapper/310:25:243
134491400,4ptp4l0-21swapper/310:15:203
134491400,4ptp4l0-21swapper/309:20:243
134491400,4ptp4l0-21swapper/309:00:163
134491400,4ptp4l0-21swapper/308:17:153
134491400,4ptp4l0-21swapper/308:10:153
134491400,4ptp4l0-21swapper/212:16:592
134491400,4ptp4l0-21swapper/211:55:452
134491400,4ptp4l0-21swapper/211:55:452
134491400,4ptp4l0-21swapper/210:51:402
134491400,4ptp4l0-21swapper/210:14:472
134491400,4ptp4l0-21swapper/209:40:552
134491400,4ptp4l0-21swapper/209:00:232
134491400,4ptp4l0-21swapper/110:19:211
134491400,4ptp4l0-21swapper/108:45:231
134491400,4ptp4l0-21swapper/108:40:281
134491400,4ptp4l0-21swapper/012:36:320
134491400,4ptp4l0-21swapper/009:03:180
134491400,4ptp4l0-21swapper/008:18:560
134491400,3ptp4l3981-21ntp_states07:35:232
134491400,3ptp4l3433-21iostat07:35:191
134491400,3ptp4l30088-21meminfo12:00:181
134491400,3ptp4l2367599cyclictest09:55:182
134491400,3ptp4l12129-21apt-get07:55:122
134491400,3ptp4l0-21swapper/308:58:423
23674993934,3cyclictest25-21ksoftirqd/110:10:001
134491390,5ptp4l0-21swapper/309:46:433
134491390,5ptp4l0-21swapper/308:20:123
134491390,5ptp4l0-21swapper/107:05:251
134491390,4ptp4l31428-21/usr/sbin/munin12:05:243
134491390,4ptp4l15608-21needreboot09:10:191
134491390,4ptp4l0-21swapper/312:15:203
134491390,4ptp4l0-21swapper/311:50:013
134491390,4ptp4l0-21swapper/311:31:123
134491390,4ptp4l0-21swapper/311:00:563
134491390,4ptp4l0-21swapper/310:40:273
134491390,4ptp4l0-21swapper/309:37:503
134491390,4ptp4l0-21swapper/308:40:183
134491390,4ptp4l0-21swapper/307:55:123
134491390,4ptp4l0-21swapper/307:41:353
134491390,4ptp4l0-21swapper/212:13:172
134491390,4ptp4l0-21swapper/212:00:132
134491390,4ptp4l0-21swapper/211:42:582
134491390,4ptp4l0-21swapper/210:25:102
134491390,4ptp4l0-21swapper/209:45:062
134491390,4ptp4l0-21swapper/208:54:542
134491390,4ptp4l0-21swapper/208:05:392
134491390,4ptp4l0-21swapper/207:20:032
134491390,4ptp4l0-21swapper/109:45:101
134491390,4ptp4l0-21swapper/010:24:450
134491390,4ptp4l0-21swapper/009:10:560
134491390,3ptp4l4264-21iostat_ios12:15:181
134491390,3ptp4l28585-21sshd11:56:263
134491390,3ptp4l28585-21sshd11:56:253
134491390,3ptp4l15790-21python08:00:261
134491390,3ptp4l0-21swapper/210:40:272
134491390,3ptp4l0-21swapper/209:50:162
134491390,3ptp4l0-21swapper/110:30:361
134491390,3ptp4l0-21swapper/108:35:221
134491390,3ptp4l0-21swapper/008:50:190
134491390,2ptp4l401ktimersoftd/307:30:223
23676993833,3cyclictest41-21ksoftirqd/311:40:013
23674993832,3cyclictest25-21ksoftirqd/107:27:591
134491380,4ptp4l0-21swapper/312:22:253
134491380,4ptp4l0-21swapper/312:12:093
134491380,4ptp4l0-21swapper/311:49:043
134491380,4ptp4l0-21swapper/311:26:393
134491380,4ptp4l0-21swapper/311:10:143
134491380,4ptp4l0-21swapper/310:59:353
134491380,4ptp4l0-21swapper/211:49:032
134491380,4ptp4l0-21swapper/209:15:082
134491380,4ptp4l0-21swapper/107:10:231
134491380,3ptp4l0-21swapper/311:40:593
134491380,3ptp4l0-21swapper/209:05:142
134491380,3ptp4l0-21swapper/108:50:241
134491380,3ptp4l0-21swapper/107:31:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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