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2026-07-06 - 18:43
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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 Mon Jul 06, 2026 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26124997616,56cyclictest10243-21unixbench_singl22:00:282
246602670,5sleep00-21swapper/020:15:150
26124996326,5cyclictest33-21ksoftirqd/221:10:002
26124996024,7cyclictest33-21ksoftirqd/200:31:162
155282600,4sleep00-21swapper/021:05:130
134491600,5ptp4l0-21swapper/220:25:252
134491600,4ptp4l0-21swapper/019:41:300
40982590,5sleep30-21swapper/321:50:143
26124995927,4cyclictest33-21ksoftirqd/223:01:252
26124995924,2cyclictest33-21ksoftirqd/200:20:282
26122995926,4cyclictest9-21ksoftirqd/022:30:010
134491590,4ptp4l0-21swapper/121:52:141
26124995830,3cyclictest33-21ksoftirqd/223:06:552
134491580,3ptp4l0-21swapper/300:10:173
134491580,3ptp4l0-21swapper/222:40:292
26124995725,3cyclictest33-21ksoftirqd/222:57:562
2612399571,9cyclictest7686-21awk00:15:211
26124995625,3cyclictest33-21ksoftirqd/220:44:052
26124995624,7cyclictest33-21ksoftirqd/219:31:542
26124995620,4cyclictest33-21ksoftirqd/200:14:002
26124995619,8cyclictest33-21ksoftirqd/219:39:442
26124995619,3cyclictest33-21ksoftirqd/222:00:002
26124995618,5cyclictest33-21ksoftirqd/219:54:592
26124995616,4cyclictest33-21ksoftirqd/200:05:252
2612399566,11cyclictest0-21swapper/120:00:181
2612399565,7cyclictest22239-21if_enp1s020:10:221
134491560,4ptp4l0-21swapper/019:17:240
26124995518,4cyclictest33-21ksoftirqd/220:09:412
2612399556,7cyclictest26309-21cpuspeed_turbos19:10:121
26124995425,6cyclictest33-21ksoftirqd/220:00:222
26124995425,4cyclictest33-21ksoftirqd/222:35:422
26124995425,4cyclictest33-21ksoftirqd/219:22:162
26124995423,4cyclictest33-21ksoftirqd/223:11:262
26124995423,3cyclictest33-21ksoftirqd/220:56:282
26124995421,4cyclictest33-21ksoftirqd/220:33:412
26124995420,4cyclictest33-21ksoftirqd/223:32:242
26124995419,4cyclictest33-21ksoftirqd/221:36:222
26124995419,4cyclictest33-21ksoftirqd/200:35:192
26124995419,4cyclictest33-21ksoftirqd/200:35:192
26124995419,3cyclictest33-21ksoftirqd/220:36:322
26124995418,4cyclictest33-21ksoftirqd/219:12:562
2612399547,7cyclictest19275-21sed23:30:271
2612399542,6cyclictest22269-21latency_hist22:30:001
134491540,4ptp4l0-21swapper/019:06:200
26124995318,8cyclictest33-21ksoftirqd/223:18:312
26124995318,4cyclictest33-21ksoftirqd/221:50:092
26124995316,5cyclictest33-21ksoftirqd/222:50:192
26124995315,4cyclictest33-21ksoftirqd/219:49:262
2612399536,5cyclictest23944-21mailstats23:40:251
2612399534,7cyclictest241ktimersoftd/122:10:201
2612399534,16cyclictest27491-21latency20:20:211
26122995317,3cyclictest9-21ksoftirqd/020:30:190
134491530,4ptp4l0-21swapper/321:25:043
134491530,4ptp4l0-21swapper/300:06:493
134491530,4ptp4l0-21swapper/020:12:430
134491530,4ptp4l0-21swapper/019:34:520
134491530,2ptp4l1301-21snmpd22:30:403
284372520,5sleep10-21swapper/122:40:261
26124995229,14cyclictest33-21ksoftirqd/221:15:282
26124995222,3cyclictest33-21ksoftirqd/223:21:172
26124995220,6cyclictest33-21ksoftirqd/221:40:232
26124995219,7cyclictest33-21ksoftirqd/219:19:172
26124995219,5cyclictest33-21ksoftirqd/223:40:182
26124995216,6cyclictest33-21ksoftirqd/220:45:102
26124995216,4cyclictest33-21ksoftirqd/200:27:312
2612299523,3cyclictest121rcu_preempt23:50:000
26122995232,8cyclictest9-21ksoftirqd/022:00:190
134491520,4ptp4l0-21swapper/221:14:592
134491520,17ptp4l0-21swapper/322:35:173
134491520,10ptp4l0-21swapper/320:10:083
2612499512,3cyclictest121rcu_preempt20:12:592
2612499512,3cyclictest121rcu_preempt19:26:592
26124995121,4cyclictest33-21ksoftirqd/222:09:432
26124995119,4cyclictest33-21ksoftirqd/219:56:242
2612399515,11cyclictest0-21swapper/120:05:231
2612399514,6cyclictest13714-21ls00:30:131
2612399514,5cyclictest22459-21tr21:20:141
2612399512,6cyclictest25-21ksoftirqd/122:50:151
2612399510,9cyclictest29989-21timerwakeupswit19:15:261
26122995121,3cyclictest9-21ksoftirqd/020:50:250
134491510,4ptp4l0-21swapper/320:37:213
134491510,4ptp4l0-21swapper/300:19:223
134491510,4ptp4l0-21swapper/020:24:480
134491510,3ptp4l0-21swapper/322:20:433
134491510,3ptp4l0-21swapper/222:13:142
134491510,3ptp4l0-21swapper/023:06:460
134491510,3ptp4l0-21swapper/019:59:520
26124995022,6cyclictest33-21ksoftirqd/221:21:032
26124995020,4cyclictest33-21ksoftirqd/221:04:122
26124995018,3cyclictest33-21ksoftirqd/221:47:522
26124995018,3cyclictest33-21ksoftirqd/220:53:332
26124995014,5cyclictest33-21ksoftirqd/223:50:252
26124995010,6cyclictest33-21ksoftirqd/220:25:012
2612399506,7cyclictest16465-21cut21:05:221
2612399505,5cyclictest0-21swapper/121:47:381
2612399502,6cyclictest4238-21phc2sys-jitter19:30:241
26122995012,8cyclictest9-21ksoftirqd/022:55:130
134491500,8ptp4l24088-21df_inode19:05:131
134491500,4ptp4l0-21swapper/322:10:313
134491500,4ptp4l0-21swapper/322:02:573
134491500,4ptp4l0-21swapper/023:44:190
134491500,4ptp4l0-21swapper/020:29:570
26124994922,3cyclictest33-21ksoftirqd/222:33:002
26124994921,4cyclictest33-21ksoftirqd/222:29:492
26124994917,6cyclictest33-21ksoftirqd/220:15:182
26124994917,3cyclictest33-21ksoftirqd/219:43:442
26124994916,4cyclictest33-21ksoftirqd/222:15:332
26124994916,3cyclictest33-21ksoftirqd/221:27:482
2612399496,6cyclictest6600-21sed20:45:171
2612399496,5cyclictest0-21swapper/123:19:081
2612399495,7cyclictest0-21swapper/119:38:321
2612399495,6cyclictest0-21swapper/121:55:261
2612399491,6cyclictest25-21ksoftirqd/123:10:151
2612399490,11cyclictest10042-21awk20:50:301
26122994913,5cyclictest9-21ksoftirqd/021:54:040
2612299490,3cyclictest121rcu_preempt22:40:010
134491490,4ptp4l0-21swapper/320:22:163
134491490,3ptp4l0-21swapper/322:40:583
26124994819,4cyclictest33-21ksoftirqd/223:29:512
26124994814,5cyclictest33-21ksoftirqd/222:45:212
2612399485,7cyclictest28264-21needreboot23:50:211
2612399485,7cyclictest16932-21cat23:25:261
2612399483,4cyclictest0-21swapper/120:45:001
2612399482,7cyclictest11111-21latency_hist00:25:011
2612299483,3cyclictest121rcu_preempt21:17:280
26122994820,4cyclictest9-21ksoftirqd/021:45:130
134491480,4ptp4l0-21swapper/300:24:143
134491480,3ptp4l0-21swapper/023:56:480
26124994721,8cyclictest33-21ksoftirqd/221:30:142
2612399476,7cyclictest0-21swapper/120:39:171
2612399475,6cyclictest30119-21irqrtprio23:55:181
2612399475,6cyclictest18125-21df_abs22:20:141
26124994619,7cyclictest33-21ksoftirqd/223:35:162
2612399464,7cyclictest16963-21switchtime22:15:261
2612299463,2cyclictest121rcu_preempt20:49:590
26122994611,10cyclictest9-21ksoftirqd/020:40:190
26124994523,3cyclictest33-21ksoftirqd/223:45:202
26124994514,3cyclictest33-21ksoftirqd/200:00:142
26124994514,3cyclictest33-21ksoftirqd/200:00:142
2612399455,6cyclictest0-21swapper/120:15:261
2612399455,11cyclictest0-21swapper/120:31:161
2612399454,6cyclictest0-21swapper/122:45:231
2612399450,6cyclictest25-21ksoftirqd/123:20:261
26122994517,4cyclictest9-21ksoftirqd/020:40:010
26122994515,7cyclictest9-21ksoftirqd/023:40:010
134491450,5ptp4l15807-21apt-get00:35:140
134491450,5ptp4l15807-21apt-get00:35:140
134491450,4ptp4l0-21swapper/321:09:533
134491450,4ptp4l0-21swapper/019:24:410
134491450,2ptp4l0-21swapper/320:34:253
46198440,13rtkit-daemon0-21swapper/000:18:230
2612499443,2cyclictest121rcu_preempt23:56:112
26124994432,3cyclictest33-21ksoftirqd/222:20:212
26124994411,3cyclictest33-21ksoftirqd/200:19:452
2612399447,6cyclictest0-21swapper/119:45:261
2612399446,6cyclictest0-21swapper/122:00:501
2612399445,6cyclictest0-21swapper/100:05:261
2612399444,7cyclictest0-21swapper/122:30:251
2612399442,6cyclictest0-21swapper/119:25:131
2612399441,6cyclictest4475-21cat23:00:171
2612399440,6cyclictest25-21ksoftirqd/121:15:161
2612299447,5cyclictest9-21ksoftirqd/021:35:280
26122994424,5cyclictest9-21ksoftirqd/000:10:270
2612299441,3cyclictest121rcu_preempt21:30:010
26122994413,3cyclictest9-21ksoftirqd/021:00:260
26122994412,4cyclictest9-21ksoftirqd/019:50:180
26122994410,4cyclictest9-21ksoftirqd/022:05:270
134491440,9ptp4l0-21swapper/122:07:371
134491440,9ptp4l0-21swapper/023:21:180
26122994338,3cyclictest9-21ksoftirqd/022:00:000
26122994326,7cyclictest9-21ksoftirqd/023:00:180
26122994316,3cyclictest9-21ksoftirqd/022:40:230
26122994312,6cyclictest9-21ksoftirqd/023:35:000
134491430,8ptp4l0-21swapper/000:03:470
134491430,8ptp4l0-21swapper/000:03:470
134491430,4ptp4l429-21python21:40:260
134491430,4ptp4l32110-21hddtemp_smartct22:50:173
134491430,4ptp4l14077-21iostat00:30:170
134491430,4ptp4l0-21swapper/119:55:431
134491430,4ptp4l0-21swapper/000:20:150
134491430,3ptp4l0-21swapper/322:25:123
134491430,3ptp4l0-21swapper/322:18:133
2612399423,4cyclictest0-21swapper/123:35:271
2612399420,7cyclictest11864-21ntp_states20:55:221
2612399420,5cyclictest0-21swapper/121:25:241
2612299429,4cyclictest9-21ksoftirqd/020:05:240
2612299426,7cyclictest9-21ksoftirqd/022:30:280
26122994237,3cyclictest940-21kworker/0:119:47:590
26122994237,3cyclictest9-21ksoftirqd/021:35:010
2612299420,2cyclictest121rcu_preempt23:10:190
134491420,6ptp4l17501-21/usr/sbin/munin20:00:193
134491420,5ptp4l3060-21/usr/sbin/munin00:05:260
134491420,5ptp4l18833-21ntp_states21:10:230
134491420,5ptp4l0-21swapper/320:05:223
134491420,3ptp4l12349-21ls23:15:260
134491420,3ptp4l0-21swapper/020:56:120
2612399412,10cyclictest0-21swapper/100:35:181
2612399412,10cyclictest0-21swapper/100:35:181
2612399411,6cyclictest7882-21seq19:40:151
2612299414,7cyclictest121rcu_preempt23:52:290
134491410,5ptp4l20458-21/usr/sbin/munin23:35:153
134491410,5ptp4l0-21swapper/322:45:143
134491410,5ptp4l0-21swapper/120:25:121
134491410,5ptp4l0-21swapper/019:10:110
134491410,4ptp4l7102-21irqstats23:05:191
134491410,4ptp4l3142-21ls22:55:271
134491410,4ptp4l31342-21iostat_ios19:20:191
134491410,4ptp4l20011-21apt-get21:15:123
134491410,4ptp4l0-21swapper/321:44:033
134491410,4ptp4l0-21swapper/121:42:021
134491410,4ptp4l0-21swapper/022:54:430
134491410,4ptp4l0-21swapper/021:20:150
134491410,4ptp4l0-21swapper/020:01:110
134491410,4ptp4l0-21swapper/019:38:430
134491410,3ptp4l323-21ls00:00:191
134491410,3ptp4l323-21ls00:00:191
2612399401,11cyclictest25459-21chrt23:45:171
26122994035,3cyclictest9-21ksoftirqd/022:45:200
26122994035,3cyclictest9-21ksoftirqd/022:10:130
2612299401,3cyclictest121rcu_preempt23:25:180
134491400,5ptp4l0-21swapper/321:35:203
134491400,5ptp4l0-21swapper/300:00:553
134491400,5ptp4l0-21swapper/300:00:543
134491400,4ptp4l12877-21grep00:25:301
134491400,4ptp4l0-21swapper/323:59:563
134491400,4ptp4l0-21swapper/323:51:583
134491400,4ptp4l0-21swapper/323:27:123
134491400,4ptp4l0-21swapper/321:55:173
134491400,4ptp4l0-21swapper/321:23:103
134491400,4ptp4l0-21swapper/320:46:113
134491400,4ptp4l0-21swapper/319:47:103
134491400,4ptp4l0-21swapper/300:37:333
134491400,4ptp4l0-21swapper/300:37:333
134491400,4ptp4l0-21swapper/122:35:521
134491400,4ptp4l0-21swapper/121:35:111
134491400,4ptp4l0-21swapper/121:02:171
134491400,4ptp4l0-21swapper/022:17:200
134491400,3ptp4l27229-21df_inode21:30:141
134491400,3ptp4l22160-21apt-get23:40:023
134491400,3ptp4l0-21swapper/019:25:180
2612299395,4cyclictest9-21ksoftirqd/000:25:140
2612299393,3cyclictest121rcu_preempt22:22:000
134491390,4ptp4l0-21swapper/323:00:473
134491390,4ptp4l0-21swapper/322:05:163
134491390,4ptp4l0-21swapper/321:45:313
134491390,4ptp4l0-21swapper/321:10:363
134491390,4ptp4l0-21swapper/321:01:273
134491390,4ptp4l0-21swapper/320:54:513
134491390,4ptp4l0-21swapper/319:54:373
134491390,4ptp4l0-21swapper/319:35:073
134491390,4ptp4l0-21swapper/319:31:203
134491390,4ptp4l0-21swapper/319:19:343
134491390,4ptp4l0-21swapper/300:25:193
134491390,4ptp4l0-21swapper/119:52:151
134491390,4ptp4l0-21swapper/100:11:111
134491390,3ptp4l0-21swapper/323:10:173
134491390,3ptp4l0-21swapper/320:25:293
134491390,3ptp4l0-21swapper/319:23:513
134491390,3ptp4l0-21swapper/121:10:191
134491380,4ptp4l0-21swapper/323:46:523
134491380,4ptp4l0-21swapper/323:15:133
134491380,4ptp4l0-21swapper/323:07:203
134491380,4ptp4l0-21swapper/320:57:493
134491380,4ptp4l0-21swapper/320:41:473
134491380,4ptp4l0-21swapper/319:10:193
134491380,3ptp4l0-21swapper/323:22:473
134491380,3ptp4l0-21swapper/321:33:263
134491370,4ptp4l0-21swapper/322:57:473
134491370,4ptp4l0-21swapper/320:15:023
134491370,4ptp4l0-21swapper/319:43:313
134491370,4ptp4l0-21swapper/300:30:093
134491370,3ptp4l0-21swapper/319:55:493
134491360,3ptp4l0-21swapper/319:25:163
134491350,4ptp4l0-21swapper/323:34:583
249032243,13sleep324938-21phc2sys19:05:233
257492153,7sleep20-21swapper/219:08:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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