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2026-06-27 - 12:48
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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 Sat Jun 27, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491700,9ptp4l11440-21apt-get19:05:111
134491700,9ptp4l11440-21apt-get19:05:111
126252700,3sleep012626-21hwlatdetect23:45:140
13777996511,11cyclictest18851-21taskset23:59:453
13777996411,12cyclictest6865-21taskset22:21:453
13776996428,4cyclictest33-21ksoftirqd/221:25:262
1377799639,11cyclictest16160-21taskset22:42:073
1377799639,11cyclictest16160-21taskset22:42:073
13777996310,12cyclictest4931-21taskset23:29:323
13777996310,11cyclictest16482-21chrt23:53:483
227982620,5sleep10-21swapper/122:55:261
13777996211,18cyclictest14079-21taskset21:29:173
13777996111,12cyclictest16188-21taskset20:23:373
13777996111,10cyclictest32386-21runrttasks22:07:553
1377799606,11cyclictest26785-21ps19:35:243
13777996011,18cyclictest2487-21taskset22:14:513
13777996010,12cyclictest27440-21taskset20:45:313
13777996010,12cyclictest27440-21taskset20:45:313
13777995911,11cyclictest2490-21taskset21:04:003
13777995910,12cyclictest18275-21chrt20:25:563
13777995910,11cyclictest23260-21taskset19:30:063
1377799587,11cyclictest1-21systemd20:35:253
13777995811,10cyclictest28131-21runrttasks00:18:123
134491580,4ptp4l0-21swapper/021:00:260
1377799579,12cyclictest27859-21taskset23:06:523
1377799579,11cyclictest2639-21taskset00:32:243
134491570,4ptp4l0-21swapper/122:35:201
1377799569,12cyclictest16155-21taskset21:31:223
1377799569,10cyclictest11670-21runrttasks22:34:313
134491560,5ptp4l0-21swapper/023:16:500
134491560,3ptp4l0-21swapper/320:00:163
13777995511,17cyclictest20631-21taskset22:50:373
13776995523,9cyclictest33-21ksoftirqd/223:35:112
1377699552,35cyclictest0-21swapper/200:30:152
1377699552,32cyclictest0-21swapper/200:05:282
134491550,4ptp4l0-21swapper/020:32:190
134491550,4ptp4l0-21swapper/020:27:080
134491550,4ptp4l0-21swapper/019:48:500
134491550,4ptp4l0-21swapper/019:25:210
134491550,3ptp4l0-21swapper/122:50:151
13777995412,10cyclictest11917-21runrttasks23:44:593
134491540,4ptp4l0-21swapper/019:35:110
134491540,3ptp4l0-21swapper/119:25:211
134491540,17ptp4l0-21swapper/119:18:411
134491540,11ptp4l13108-21users19:05:260
134491540,11ptp4l13108-21users19:05:260
1377799539,11cyclictest4463-21runrttasks19:56:553
13777995312,9cyclictest18643-21seq22:49:313
13777995312,10cyclictest27649-21seq21:56:193
1377699535,8cyclictest33-21ksoftirqd/220:10:282
1377699534,8cyclictest27881-21/usr/sbin/munin19:40:172
1377699534,7cyclictest0-21swapper/220:20:182
1377699532,7cyclictest33-21ksoftirqd/222:05:142
1377699532,32cyclictest0-21swapper/222:35:192
1377699530,7cyclictest4771-21idleruntime-cro20:00:002
134491530,4ptp4l0-21swapper/021:20:270
134491530,3ptp4l19988-21irqstats00:00:190
134491530,3ptp4l0-21swapper/023:54:460
1377799528,11cyclictest11714-21runrttasks21:24:103
1377799525,10cyclictest11084-21cat20:10:273
13777995211,10cyclictest20974-21runrttasks00:02:193
13777995211,10cyclictest20709-21runrttasks21:40:433
13777995210,9cyclictest32610-21runrttasks00:26:273
1377699526,8cyclictest33-21ksoftirqd/221:20:002
13776995222,5cyclictest33-21ksoftirqd/219:15:232
1377699520,7cyclictest27710-21sed19:40:002
1377799519,10cyclictest2256-21runrttasks19:53:473
1377799517,11cyclictest0-21swapper/319:46:063
1377799516,11cyclictest24260-21irqrtprio23:00:203
13777995110,11cyclictest30094-21chrt23:11:113
1377699515,7cyclictest33-21ksoftirqd/223:10:282
1377699514,9cyclictest0-21swapper/200:35:172
1377699514,8cyclictest33-21ksoftirqd/221:55:162
1377699512,7cyclictest0-21swapper/223:06:022
1377699512,7cyclictest0-21swapper/220:40:282
1377699512,5cyclictest17045-21fschecks_time22:45:152
1377699510,6cyclictest33-21ksoftirqd/219:30:242
134491510,4ptp4l0-21swapper/019:40:340
1377799509,11cyclictest20717-21chrt20:32:503
1377799507,11cyclictest21963-21sed19:25:223
13777995011,10cyclictest9530-21runrttasks23:39:383
13777995010,10cyclictest23252-21runrttasks21:48:493
1377699506,8cyclictest33-21ksoftirqd/223:25:162
1377699504,9cyclictest33-21ksoftirqd/221:15:002
1377699504,9cyclictest33-21ksoftirqd/219:45:192
1377699503,6cyclictest33-21ksoftirqd/200:15:012
1377699501,11cyclictest0-21swapper/222:30:242
1377699500,7cyclictest33-21ksoftirqd/221:40:152
1377699500,6cyclictest33-21ksoftirqd/223:55:182
1377699500,6cyclictest22101-21grep22:55:162
1377799499,7cyclictest134491ptp4l21:53:473
1377699495,8cyclictest33-21ksoftirqd/220:55:012
1377699493,10cyclictest33-21ksoftirqd/222:19:592
1377699492,6cyclictest33-21ksoftirqd/223:45:262
1377699492,6cyclictest0-21swapper/221:35:262
1377699492,5cyclictest33-21ksoftirqd/222:05:002
1377699492,5cyclictest0-21swapper/221:30:272
1377699492,31cyclictest0-21swapper/222:25:202
1377699490,13cyclictest33-21ksoftirqd/223:20:132
1377699490,10cyclictest0-21swapper/221:02:372
134491490,4ptp4l0-21swapper/021:49:480
134491490,4ptp4l0-21swapper/019:51:210
134491490,4ptp4l0-21swapper/000:10:110
1377799489,12cyclictest18127-21chrt19:16:203
1377699483,5cyclictest4950-21sort21:10:012
1377699482,6cyclictest33-21ksoftirqd/223:20:012
1377699481,6cyclictest33-21ksoftirqd/219:25:152
1377699481,10cyclictest0-21swapper/222:44:182
1377699481,10cyclictest0-21swapper/222:44:182
1377699480,6cyclictest33-21ksoftirqd/220:40:002
1377799479,10cyclictest6856-21chrt21:11:013
1377799478,12cyclictest22951-21chrt22:55:563
1377799476,11cyclictest0-21swapper/320:18:013
13776994733,4cyclictest33-21ksoftirqd/220:18:012
1377699473,10cyclictest0-21swapper/221:22:432
1377699470,7cyclictest33-21ksoftirqd/222:10:132
1377699470,6cyclictest33-21ksoftirqd/200:05:012
134491470,4ptp4l0-21swapper/322:35:033
134491470,4ptp4l0-21swapper/022:27:550
134491470,3ptp4l0-21swapper/219:52:352
134491470,3ptp4l0-21swapper/122:30:371
134491470,3ptp4l0-21swapper/000:25:530
1377799469,11cyclictest29917-21chrt20:52:483
1377699463,9cyclictest33-21ksoftirqd/220:55:132
1377699463,5cyclictest33-21ksoftirqd/223:30:152
1377699462,6cyclictest33-21ksoftirqd/220:30:142
1377699461,5cyclictest33-21ksoftirqd/200:29:592
1377699460,5cyclictest0-21swapper/223:40:092
134491460,8ptp4l101ktimersoftd/020:15:150
134491460,5ptp4l1377799cyclictest00:09:483
134491460,4ptp4l0-21swapper/121:28:431
134491460,4ptp4l0-21swapper/119:14:231
134491460,3ptp4l0-21swapper/119:54:181
134491460,3ptp4l0-21swapper/022:44:180
134491460,3ptp4l0-21swapper/022:44:180
1377799459,11cyclictest25802-21chrt00:12:503
1377799458,9cyclictest29586-21taskset19:40:353
1377799455,2cyclictest0-21swapper/300:20:123
1377699455,3cyclictest121rcu_preempt23:00:272
1377699453,6cyclictest33-21ksoftirqd/222:50:232
1377699452,7cyclictest0-21swapper/220:25:232
1377699450,6cyclictest321ktimersoftd/221:50:182
134491450,3ptp4l19007-21apt-get21:40:131
134491450,3ptp4l0-21swapper/020:46:360
134491450,3ptp4l0-21swapper/020:46:360
134491450,10ptp4l0-21swapper/023:55:480
1377799446,5cyclictest0-21swapper/323:47:373
1377699445,8cyclictest33-21ksoftirqd/220:05:182
1377699442,3cyclictest33-21ksoftirqd/220:45:112
1377699442,3cyclictest33-21ksoftirqd/220:45:112
1377699442,12cyclictest0-21swapper/223:53:102
1377699442,11cyclictest0-21swapper/219:14:092
1377699440,6cyclictest33-21ksoftirqd/200:25:002
134491440,4ptp4l3103-21apt-get00:35:110
134491440,4ptp4l0-21swapper/023:08:380
134491440,3ptp4l0-21swapper/021:32:560
201152430,4sleep020119-21phc2sys-jitter22:50:220
1377799438,11cyclictest30317-21chrt20:55:053
1377799431,16cyclictest0-21swapper/319:10:153
13777994310,10cyclictest18525-21chrt21:37:213
1377699431,6cyclictest33-21ksoftirqd/200:15:182
1377699430,12cyclictest0-21swapper/219:23:362
134491430,8ptp4l0-21swapper/122:10:151
134491430,8ptp4l0-21swapper/022:55:040
134491430,3ptp4l7480-21df20:05:130
134491430,3ptp4l30340-21apt-get20:55:121
134491430,3ptp4l0-21swapper/019:17:290
1377799428,11cyclictest4611-21taskset22:17:333
13777994210,10cyclictest32647-21chrt23:19:223
134491420,9ptp4l0-21swapper/019:23:550
134491420,5ptp4l0-21swapper/320:40:223
134491420,5ptp4l0-21swapper/023:10:220
134491420,4ptp4l5789-21iostat_ios23:30:173
134491420,4ptp4l5641-21iostat22:20:170
134491420,4ptp4l26537-21df_inode00:15:150
134491420,4ptp4l23282-21apt-get19:30:121
134491420,4ptp4l0-21swapper/119:57:561
134491420,4ptp4l0-21swapper/023:20:060
134491420,2ptp4l0-21swapper/123:22:201
134491420,1ptp4l0-21swapper/020:00:250
1377799416,9cyclictest0-21swapper/320:07:493
1377799416,6cyclictest0-21swapper/300:35:143
13776994136,3cyclictest33-21ksoftirqd/220:00:192
1377699411,5cyclictest0-21swapper/221:49:582
134491410,9ptp4l0-21swapper/020:13:310
134491410,8ptp4l0-21swapper/022:49:500
134491410,8ptp4l0-21swapper/020:21:490
134491410,5ptp4l6195-21ntp_states22:20:231
134491410,5ptp4l25602-21apt-get23:05:021
134491410,5ptp4l24949-21/usr/sbin/munin21:50:240
134491410,5ptp4l0-21swapper/000:05:190
134491410,4ptp4l7580-21diskstats20:05:131
134491410,4ptp4l6089-21ntp_states20:00:221
134491410,4ptp4l23591-21diskstats19:30:150
134491410,4ptp4l21571-21hddtemp_smartct20:35:161
134491410,4ptp4l19273-21hddtemp_smartct20:30:171
134491410,4ptp4l1865-21ntp_states00:30:220
134491410,4ptp4l15286-21meminfo22:40:191
134491410,4ptp4l15286-21meminfo22:40:191
134491410,4ptp4l12169-21apt-get23:45:111
134491410,4ptp4l0-21swapper/023:25:190
134491410,3ptp4l30853-21apt-get00:25:121
134491410,3ptp4l29869-21awk00:20:231
1377699400,7cyclictest33-21ksoftirqd/222:23:442
134491400,7ptp4l0-21swapper/019:55:150
134491400,5ptp4l0-21swapper/121:35:191
134491400,5ptp4l0-21swapper/119:40:131
134491400,5ptp4l0-21swapper/100:00:121
134491400,5ptp4l0-21swapper/019:10:110
134491400,4ptp4l4219-21ntpq00:35:211
134491400,4ptp4l29943-21apt-get19:45:021
134491400,4ptp4l29161-21memory22:00:211
134491400,4ptp4l17669-21ntp_states20:25:231
134491400,4ptp4l0-21swapper/120:10:131
134491400,4ptp4l0-21swapper/022:30:270
134491400,4ptp4l0-21swapper/022:00:190
134491400,4ptp4l0-21swapper/020:40:270
134491400,3ptp4l7801-21hddtemp_smartct22:25:171
134491400,3ptp4l4016-21awk23:25:241
134491400,3ptp4l26736-21irqstats21:55:201
134491400,3ptp4l21874-21iostat_ios21:45:191
134491400,3ptp4l19570-21iostat21:40:170
134491400,3ptp4l1500-21ls23:20:193
134491400,2ptp4l3868-21strings21:05:221
13775993911,27cyclictest0-21swapper/121:50:591
134491390,5ptp4l0-21swapper/122:15:151
134491390,5ptp4l0-21swapper/021:15:420
134491390,5ptp4l0-21swapper/021:05:150
134491390,4ptp4l0-21swapper/321:08:093
134491390,4ptp4l0-21swapper/121:00:111
134491390,4ptp4l0-21swapper/120:15:181
134491390,4ptp4l0-21swapper/100:30:181
134491390,4ptp4l0-21swapper/100:10:111
134491390,4ptp4l0-21swapper/023:38:320
134491390,4ptp4l0-21swapper/023:00:240
134491390,4ptp4l0-21swapper/022:38:060
134491390,4ptp4l0-21swapper/022:12:300
134491390,4ptp4l0-21swapper/022:05:020
134491390,4ptp4l0-21swapper/021:59:440
134491390,4ptp4l0-21swapper/021:25:170
134491390,4ptp4l0-21swapper/021:10:350
134491390,4ptp4l0-21swapper/020:35:150
134491390,4ptp4l0-21swapper/000:22:370
134491390,3ptp4l7723-21df23:35:131
134491390,3ptp4l6891-21users23:30:260
134491390,3ptp4l23887-21hddtemp_smartct20:40:161
134491390,3ptp4l15231-21irqstats21:30:191
134491390,3ptp4l0-21swapper/021:39:350
1377799385,11cyclictest0-21swapper/322:02:513
134491380,5ptp4l18856-21cpuspeed_turbos19:20:131
134491380,5ptp4l0-21swapper/120:20:131
134491380,4ptp4l0-21swapper/321:15:253
134491380,4ptp4l0-21swapper/123:43:201
134491380,4ptp4l0-21swapper/123:15:221
134491380,4ptp4l0-21swapper/123:13:581
134491380,4ptp4l0-21swapper/122:05:121
134491380,4ptp4l0-21swapper/121:15:041
134491380,4ptp4l0-21swapper/120:50:121
134491380,4ptp4l0-21swapper/119:35:151
134491380,4ptp4l0-21swapper/023:40:190
134491380,4ptp4l0-21swapper/022:15:110
134491380,4ptp4l0-21swapper/020:57:500
134491380,3ptp4l27410-21/usr/sbin/munin00:15:231
134491380,3ptp4l17131-21df_inode23:55:131
13777993712,11cyclictest9477-21cat22:30:003
134491370,4ptp4l0-21swapper/319:24:443
134491370,4ptp4l0-21swapper/123:30:281
134491370,4ptp4l0-21swapper/123:05:001
134491370,4ptp4l0-21swapper/120:45:121
134491370,4ptp4l0-21swapper/120:45:121
134491370,4ptp4l0-21swapper/020:54:270
134491370,3ptp4l0-21swapper/123:50:231
134491370,3ptp4l0-21swapper/122:45:151
134491370,3ptp4l0-21swapper/100:08:061
134491360,5ptp4l0-21swapper/319:09:503
134491360,5ptp4l0-21swapper/319:09:503
134491360,4ptp4l0-21swapper/219:09:452
134491360,4ptp4l0-21swapper/219:09:452
134491360,4ptp4l0-21swapper/121:10:181
134491360,3ptp4l0-21swapper/121:20:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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