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2026-06-26 - 04:39
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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 Fri Jun 26, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171721570,6sleep2420599cyclictest23:40:262
171721570,6sleep2420599cyclictest23:40:262
1976321510,5sleep1420499cyclictest00:20:171
420499832,78cyclictest28473-21kworker/1:220:05:091
420499762,72cyclictest25273-21kworker/1:021:55:291
134491690,3ptp4l41-21ksoftirqd/322:18:173
134491660,32ptp4l0-21swapper/200:28:282
134491640,4ptp4l0-21swapper/023:50:160
193952600,5sleep00-21swapper/023:10:200
4204995917,40cyclictest23724-21kworker/1:223:05:481
134491590,4ptp4l0-21swapper/320:55:283
134491580,5ptp4l7103-21iostat_ios19:15:182
134491580,4ptp4l0-21swapper/122:36:191
134491570,3ptp4l0-21swapper/223:15:142
134491560,4ptp4l0-21swapper/120:25:251
134491560,3ptp4l0-21swapper/122:52:271
134491560,2ptp4l18751-21tr20:50:123
134491550,9ptp4l0-21swapper/219:26:342
134491550,3ptp4l0-21swapper/021:31:120
134491540,5ptp4l0-21swapper/221:22:502
134491540,4ptp4l0-21swapper/022:00:240
134491540,3ptp4l0-21swapper/123:25:221
134491540,3ptp4l0-21swapper/022:40:160
420499533,49cyclictest2413-21kworker/1:100:12:291
134491530,4ptp4l0-21swapper/300:27:083
134491530,10ptp4l1810-21apt-get19:05:120
134491520,5ptp4l0-21swapper/219:47:382
134491520,4ptp4l0-21swapper/222:50:082
134491510,4ptp4l0-21swapper/300:11:213
134491510,4ptp4l0-21swapper/222:33:402
134491510,4ptp4l0-21swapper/221:14:082
134491510,4ptp4l0-21swapper/021:13:110
134491510,3ptp4l0-21swapper/219:57:312
134491510,3ptp4l0-21swapper/219:57:312
134491510,3ptp4l0-21swapper/121:08:091
134491510,3ptp4l0-21swapper/022:38:480
134491510,3ptp4l0-21swapper/021:58:000
420499501,47cyclictest28473-21kworker/1:220:55:491
134491500,4ptp4l0-21swapper/200:16:112
134491500,4ptp4l0-21swapper/200:16:112
134491500,3ptp4l0-21swapper/123:16:271
134491500,3ptp4l0-21swapper/120:48:471
134491500,3ptp4l0-21swapper/020:49:280
134491490,9ptp4l2028-21df19:05:131
134491490,4ptp4l0-21swapper/223:31:352
134491490,4ptp4l0-21swapper/220:57:512
134491490,4ptp4l0-21swapper/219:40:322
134491490,4ptp4l0-21swapper/219:23:482
134491490,3ptp4l0-21swapper/120:16:001
4205994834,12cyclictest33-21ksoftirqd/220:45:002
4205994834,12cyclictest33-21ksoftirqd/220:45:002
134491480,4ptp4l0-21swapper/221:32:062
134491480,4ptp4l0-21swapper/219:54:422
134491480,3ptp4l0-21swapper/020:04:350
134491480,3ptp4l0-21swapper/019:12:260
134491480,17ptp4l25-21ksoftirqd/121:35:001
134491470,4ptp4l420399cyclictest20:34:520
134491470,4ptp4l0-21swapper/221:06:162
134491470,4ptp4l0-21swapper/000:02:160
134491470,3ptp4l0-21swapper/300:15:303
134491470,3ptp4l0-21swapper/300:15:303
134491470,3ptp4l0-21swapper/220:21:322
134491470,3ptp4l0-21swapper/121:10:391
134491460,9ptp4l0-21swapper/022:08:550
134491460,4ptp4l0-21swapper/222:44:402
134491460,12ptp4l0-21swapper/222:15:192
134491450,5ptp4l0-21swapper/023:15:270
134491450,4ptp4l420399cyclictest22:13:280
134491450,4ptp4l0-21swapper/321:35:133
134491450,4ptp4l0-21swapper/023:55:360
134491450,3ptp4l0-21swapper/120:42:421
134491450,3ptp4l0-21swapper/120:42:421
134491450,3ptp4l0-21swapper/119:15:491
134491440,6ptp4l0-21swapper/122:40:011
134491440,4ptp4l19369-21apt-get00:20:122
134491440,4ptp4l0-21swapper/120:54:471
134491440,4ptp4l0-21swapper/021:26:560
134491440,3ptp4l0-21swapper/123:36:421
134491440,3ptp4l0-21swapper/122:32:141
134491440,3ptp4l0-21swapper/121:19:171
134491440,3ptp4l0-21swapper/120:21:081
134491440,2ptp4l13973-21apt-get21:50:121
134491430,9ptp4l0-21swapper/223:58:492
134491430,9ptp4l0-21swapper/223:35:532
134491430,9ptp4l0-21swapper/223:02:002
134491430,9ptp4l0-21swapper/221:15:472
134491430,5ptp4l0-21swapper/223:20:132
134491430,3ptp4l23246-21apt-get21:00:111
134491430,3ptp4l0-21swapper/019:20:140
134491420,9ptp4l0-21swapper/222:02:412
134491420,9ptp4l0-21swapper/221:28:572
134491420,9ptp4l0-21swapper/220:49:422
134491420,6ptp4l26767-21ls23:25:220
134491420,5ptp4l0-21swapper/323:25:233
134491420,5ptp4l0-21swapper/322:55:273
134491420,5ptp4l0-21swapper/319:05:263
134491420,5ptp4l0-21swapper/300:00:273
134491420,5ptp4l0-21swapper/120:00:171
134491420,5ptp4l0-21swapper/023:30:160
134491420,4ptp4l19584-21memory20:50:190
134491420,4ptp4l0-21swapper/323:00:453
134491420,3ptp4l0-21swapper/122:15:041
134491420,3ptp4l0-21swapper/022:26:490
134491420,2ptp4l0-21swapper/323:57:573
134491420,10ptp4l0-21swapper/223:29:482
134491410,9ptp4l9-21ksoftirqd/000:16:470
134491410,9ptp4l9-21ksoftirqd/000:16:470
134491410,9ptp4l0-21swapper/222:14:362
134491410,9ptp4l0-21swapper/219:33:112
134491410,8ptp4l0-21swapper/220:31:202
134491410,5ptp4l13204-21apt-get19:30:040
134491410,5ptp4l11986-21diskstats21:45:160
134491410,5ptp4l0-21swapper/220:00:222
134491410,5ptp4l0-21swapper/121:30:251
134491410,5ptp4l0-21swapper/021:40:170
134491410,5ptp4l0-21swapper/021:40:170
134491410,4ptp4l866-21memory20:10:201
134491410,4ptp4l24910-21memory00:30:210
134491410,4ptp4l15089-21ntp_states21:50:240
134491410,4ptp4l0-21swapper/321:10:323
134491410,4ptp4l0-21swapper/222:20:202
134491410,4ptp4l0-21swapper/219:09:352
134491410,4ptp4l0-21swapper/122:10:261
134491410,4ptp4l0-21swapper/020:55:100
134491410,2ptp4l121rcu_preempt22:36:213
134491410,1ptp4l0-21swapper/020:23:300
134491410,13ptp4l0-21swapper/120:35:291
134491410,10ptp4l0-21swapper/121:25:271
46198400,4rtkit-daemon0-21swapper/323:18:163
4205994035,3cyclictest33-21ksoftirqd/222:40:002
4205994035,3cyclictest33-21ksoftirqd/220:20:012
4205994035,3cyclictest33-21ksoftirqd/219:35:062
134491400,6ptp4l18743-21latency_hist23:10:003
134491400,6ptp4l13655-21wc20:40:002
134491400,5ptp4l0-21swapper/323:50:143
134491400,5ptp4l0-21swapper/319:30:183
134491400,5ptp4l0-21swapper/319:15:203
134491400,5ptp4l0-21swapper/220:07:022
134491400,5ptp4l0-21swapper/119:40:121
134491400,5ptp4l0-21swapper/100:35:211
134491400,5ptp4l0-21swapper/023:20:150
134491400,5ptp4l0-21swapper/021:35:160
134491400,4ptp4l9535-21apt-get00:00:181
134491400,4ptp4l4234-21apt-get19:10:111
134491400,4ptp4l32345-21apt-get20:10:120
134491400,4ptp4l32011-21users23:35:280
134491400,4ptp4l31720-21users20:05:280
134491400,4ptp4l30797-21hddtemp_smartct22:25:182
134491400,4ptp4l28379-21diskstats22:20:151
134491400,4ptp4l2826-21df23:45:140
134491400,4ptp4l2826-21df23:45:140
134491400,4ptp4l26870-21ntp_states22:15:240
134491400,4ptp4l23166-21df_inode19:50:140
134491400,4ptp4l21534-21hddtemp_smartct22:05:181
134491400,4ptp4l19734-21memory23:10:211
134491400,4ptp4l15327-21users19:30:271
134491400,4ptp4l13162-21ntp_states00:05:250
134491400,4ptp4l12136-21df_inode22:55:151
134491400,4ptp4l0-21swapper/321:05:223
134491400,4ptp4l0-21swapper/223:54:392
134491400,4ptp4l0-21swapper/223:13:032
134491400,4ptp4l0-21swapper/221:47:412
134491400,4ptp4l0-21swapper/221:39:102
134491400,4ptp4l0-21swapper/123:00:111
134491400,4ptp4l0-21swapper/121:20:241
134491400,4ptp4l0-21swapper/119:35:151
134491400,4ptp4l0-21swapper/023:42:100
134491400,4ptp4l0-21swapper/023:42:100
134491400,4ptp4l0-21swapper/000:25:160
134491400,4ptp4l0-21swapper/000:10:200
134491400,3ptp4l9276-21hddtemp_smartct19:20:151
134491400,3ptp4l28041-21apt-get23:30:091
134491400,3ptp4l24402-21memory23:20:201
134491400,3ptp4l11147-21apt-get19:25:120
134491400,3ptp4l10715-21ls20:30:271
46198390,4rtkit-daemon0-21swapper/223:45:422
46198390,4rtkit-daemon0-21swapper/223:45:422
4206993932,4cyclictest41-21ksoftirqd/320:25:123
4205993934,3cyclictest33-21ksoftirqd/221:55:012
134491390,5ptp4l420399cyclictest22:34:180
134491390,5ptp4l24378-21tune2fs00:30:173
134491390,5ptp4l21671-21/usr/sbin/munin19:45:213
134491390,5ptp4l0-21swapper/322:05:303
134491390,5ptp4l0-21swapper/321:04:213
134491390,5ptp4l0-21swapper/300:20:143
134491390,5ptp4l0-21swapper/023:05:240
134491390,5ptp4l0-21swapper/021:15:120
134491390,4ptp4l27679-21awk00:35:273
134491390,4ptp4l2730-21hddtemp_smartct20:15:170
134491390,4ptp4l18766-21/usr/sbin/munin23:10:263
134491390,4ptp4l0-21swapper/320:35:233
134491390,4ptp4l0-21swapper/222:58:252
134491390,4ptp4l0-21swapper/222:48:462
134491390,4ptp4l0-21swapper/221:40:182
134491390,4ptp4l0-21swapper/221:40:182
134491390,4ptp4l0-21swapper/221:03:462
134491390,4ptp4l0-21swapper/220:52:342
134491390,4ptp4l0-21swapper/219:12:332
134491390,4ptp4l0-21swapper/200:35:252
134491390,4ptp4l0-21swapper/200:05:202
134491390,4ptp4l0-21swapper/123:50:131
134491390,4ptp4l0-21swapper/121:45:141
134491390,4ptp4l0-21swapper/119:52:371
134491390,4ptp4l0-21swapper/100:15:121
134491390,4ptp4l0-21swapper/100:15:121
134491390,4ptp4l0-21swapper/023:00:470
134491390,4ptp4l0-21swapper/022:51:480
134491390,4ptp4l0-21swapper/022:49:460
134491390,4ptp4l0-21swapper/021:00:220
134491390,4ptp4l0-21swapper/020:25:200
134491390,4ptp4l0-21swapper/000:35:160
134491390,4ptp4l0-21swapper/000:20:200
134491390,3ptp4l8192-21memory22:45:221
134491390,3ptp4l8162-21meminfo23:55:201
134491390,3ptp4l26446-21irqstats21:05:200
134491390,3ptp4l15608-21ls20:40:250
134491390,3ptp4l15608-21ls20:40:250
134491390,3ptp4l14955-21perl00:10:172
134491390,3ptp4l12464-21memory20:35:210
134491380,4ptp4l2596-21grep21:25:133
134491380,4ptp4l0-21swapper/323:45:263
134491380,4ptp4l0-21swapper/323:45:263
134491380,4ptp4l0-21swapper/323:40:013
134491380,4ptp4l0-21swapper/323:40:013
134491380,4ptp4l0-21swapper/323:30:123
134491380,4ptp4l0-21swapper/322:50:163
134491380,4ptp4l0-21swapper/322:45:283
134491380,4ptp4l0-21swapper/321:45:223
134491380,4ptp4l0-21swapper/321:40:163
134491380,4ptp4l0-21swapper/321:40:163
134491380,4ptp4l0-21swapper/321:30:283
134491380,4ptp4l0-21swapper/320:31:283
134491380,4ptp4l0-21swapper/319:40:233
134491380,4ptp4l0-21swapper/319:40:003
134491380,4ptp4l0-21swapper/319:20:183
134491380,4ptp4l0-21swapper/319:12:343
134491380,4ptp4l0-21swapper/300:05:213
134491380,4ptp4l0-21swapper/222:08:132
134491380,4ptp4l0-21swapper/221:57:442
134491380,4ptp4l0-21swapper/220:29:142
134491380,4ptp4l0-21swapper/220:10:242
134491380,4ptp4l0-21swapper/200:30:022
134491380,4ptp4l0-21swapper/200:00:262
134491380,4ptp4l0-21swapper/123:45:311
134491380,4ptp4l0-21swapper/123:45:311
134491380,4ptp4l0-21swapper/123:41:581
134491380,4ptp4l0-21swapper/123:41:581
134491380,4ptp4l0-21swapper/100:30:311
134491380,4ptp4l0-21swapper/100:25:351
134491380,4ptp4l0-21swapper/100:06:181
134491380,4ptp4l0-21swapper/022:55:130
134491380,4ptp4l0-21swapper/019:47:200
134491380,4ptp4l0-21swapper/019:15:580
134491380,3ptp4l5743-21ntp_states20:20:223
134491380,3ptp4l28569-21if_enp1s022:20:180
134491380,3ptp4l20476-21users22:00:301
134491380,3ptp4l18271-21apt-get19:40:110
134491380,2ptp4l15396-21ls21:50:283
134491370,4ptp4l31955-21unixbench_multi22:25:291
134491370,4ptp4l28933-21cut22:20:203
134491370,4ptp4l25889-21sed19:55:180
134491370,4ptp4l25889-21sed19:55:180
134491370,4ptp4l0-21swapper/322:25:153
134491370,4ptp4l0-21swapper/321:55:203
134491370,4ptp4l0-21swapper/320:49:013
134491370,4ptp4l0-21swapper/320:40:203
134491370,4ptp4l0-21swapper/320:40:203
134491370,4ptp4l0-21swapper/320:11:063
134491370,4ptp4l0-21swapper/320:05:143
134491370,4ptp4l0-21swapper/223:08:252
134491370,4ptp4l0-21swapper/121:40:061
134491370,4ptp4l0-21swapper/121:40:061
134491370,4ptp4l0-21swapper/119:26:241
134491370,4ptp4l0-21swapper/021:22:560
134491370,4ptp4l0-21swapper/019:35:220
134491370,3ptp4l30609-21fschecks_time21:15:163
134491370,3ptp4l0-21swapper/323:20:213
134491370,3ptp4l0-21swapper/320:04:003
134491370,3ptp4l0-21swapper/119:47:011
134491360,4ptp4l0-21swapper/322:31:273
134491360,4ptp4l0-21swapper/322:00:043
134491360,4ptp4l0-21swapper/320:15:443
134491360,4ptp4l0-21swapper/319:55:163
134491360,4ptp4l0-21swapper/319:55:163
134491360,4ptp4l0-21swapper/319:26:343
134491360,3ptp4l0-21swapper/322:42:113
134491360,3ptp4l0-21swapper/319:54:023
134491360,3ptp4l0-21swapper/119:55:141
134491360,3ptp4l0-21swapper/119:55:141
134491350,3ptp4l0-21swapper/323:35:383
134491350,3ptp4l0-21swapper/321:23:513
134491330,3ptp4l0-21swapper/322:10:403
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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