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2026-05-07 - 07:21
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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 Thu May 07, 2026 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
48252740,5sleep34828-21switchtime00:25:253
18399997411,13cyclictest7175-21chrt22:11:022
18399997312,11cyclictest4459-21chrt20:58:162
18399997212,18cyclictest16453-21chrt20:15:042
18399997112,12cyclictest5286-21chrt23:19:222
18399997112,11cyclictest12039-21chrt22:24:132
18399997012,12cyclictest2869-21chrt22:04:442
1839999699,12cyclictest30359-21ls20:45:132
18399996912,16cyclictest9832-21chrt23:28:282
18399996912,12cyclictest1317-21runrttasks23:06:482
18399996912,11cyclictest2980-21chrt23:14:162
18399996911,11cyclictest4617-21chrt19:49:202
18399996910,56cyclictest32076-21ls21:55:262
18399996815,11cyclictest8860-21chrt21:05:382
18399996812,11cyclictest29767-21chrt19:30:422
18399996812,11cyclictest21384-21chrt23:53:192
18399996812,11cyclictest16044-21taskset21:23:242
18399996811,10cyclictest10252-21chrt00:39:132
1839999676,25cyclictest212-21systemd-journal22:05:592
18399996713,11cyclictest7805-21chrt00:32:232
18399996711,11cyclictest21296-21chrt22:41:172
18399996613,11cyclictest14483-21taskset22:27:382
18399996612,20cyclictest25819-21chrt22:50:322
18399996612,18cyclictest1980-21chrt19:40:332
18399996612,11cyclictest8902-21chrt19:55:302
18399996612,11cyclictest20360-21chrt19:13:382
18399996612,11cyclictest14422-21taskset23:37:442
18399996612,10cyclictest13679-21chrt21:17:462
18399996611,12cyclictest16911-21chrt23:44:562
18399996515,11cyclictest23367-21cat21:39:592
18399996513,16cyclictest18120-21chrt21:25:362
18399996513,14cyclictest30103-21seq21:51:092
18399996510,18cyclictest134491ptp4l23:45:262
18399996510,17cyclictest139082sleep220:09:462
1839799651,15cyclictest10579-21grep23:30:160
1839799651,15cyclictest10579-21grep23:30:150
134491650,3ptp4l12677-21grep22:25:131
18399996412,11cyclictest25405-21taskset21:42:302
18399996412,11cyclictest18973-21chrt22:36:122
18399996411,10cyclictest32242-21taskset19:38:012
18399996411,10cyclictest23025-21taskset20:28:312
18399996312,15cyclictest27671-21seq21:47:082
18399996312,11cyclictest6667-21chrt21:01:532
18399996312,11cyclictest28168-21taskset00:06:482
18399996311,9cyclictest20411-21awk20:20:272
18399996311,21cyclictest32569-21chrt20:50:022
18399996311,12cyclictest30020-21chrt20:44:402
18399996311,11cyclictest27609-21chrt20:38:252
18399996311,11cyclictest23528-21chrt23:56:292
134491630,3ptp4l0-21swapper/100:30:001
18399996215,11cyclictest2930-21chrt00:21:312
18399996212,17cyclictest9439-21chrt22:15:432
18399996211,15cyclictest30640-21seq00:11:302
18399996210,10cyclictest616-21chrt00:17:502
18399996115,12cyclictest7418-21chrt23:21:582
18399996112,12cyclictest23807-21seq22:49:062
1839999609,10cyclictest227092sleep219:19:152
1839999607,13cyclictest15386-21ps20:10:242
18399996016,16cyclictest25831-21chrt00:01:182
18399996014,12cyclictest20636-21chrt21:33:152
18399996014,11cyclictest25122-21chrt20:30:552
18399996014,11cyclictest12245-21chrt23:34:572
18399996014,11cyclictest12245-21chrt23:34:572
18399995913,12cyclictest11148-21chrt21:10:322
18399995910,16cyclictest5226-21/usr/sbin/munin19:50:122
134491590,4ptp4l0-21swapper/200:25:522
134491590,4ptp4l0-21swapper/020:25:310
134491590,3ptp4l8164-21meminfo19:55:191
27552580,6sleep30-21swapper/300:20:293
18399995814,12cyclictest16744-21chrt22:32:122
18399995715,17cyclictest27328-21taskset19:26:352
18399995615,16cyclictest28180-21taskset22:56:142
1839799561,11cyclictest7853-21sed23:25:010
134491560,4ptp4l0-21swapper/122:41:411
1839799557,6cyclictest0-21swapper/020:45:140
134491550,5ptp4l0-21swapper/019:55:180
134491550,4ptp4l0-21swapper/119:29:271
134491550,3ptp4l0-21swapper/320:58:553
1839799547,5cyclictest0-21swapper/021:15:190
134491540,3ptp4l0-21swapper/121:01:021
134491540,3ptp4l0-21swapper/120:43:441
18399995313,10cyclictest25241-21taskset19:24:162
1839799531,11cyclictest10425-21cat00:40:010
134491530,4ptp4l0-21swapper/322:23:083
134491530,4ptp4l0-21swapper/121:15:201
134491530,4ptp4l0-21swapper/119:52:391
134491530,4ptp4l0-21swapper/119:47:011
134491530,4ptp4l0-21swapper/119:23:511
134491530,4ptp4l0-21swapper/119:15:331
134491530,3ptp4l0-21swapper/120:24:481
134491530,10ptp4l0-21swapper/121:49:291
1839799520,11cyclictest23164-21switchtime23:55:250
134491520,9ptp4l0-21swapper/321:49:393
134491520,4ptp4l0-21swapper/019:05:110
134491520,3ptp4l0-21swapper/123:19:441
1839799516,5cyclictest0-21swapper/022:20:110
1839799514,6cyclictest0-21swapper/019:50:220
134491510,4ptp4l0-21swapper/320:23:503
134491510,4ptp4l0-21swapper/121:07:571
134491510,3ptp4l0-21swapper/323:50:533
1839799502,16cyclictest29177-21df_inode00:10:140
134491500,3ptp4l0-21swapper/323:43:593
1839799497,11cyclictest0-21swapper/022:25:130
1839799495,15cyclictest10008-21basename20:00:160
1839799494,5cyclictest1301-21snmpd21:14:410
134491490,4ptp4l0-21swapper/120:09:171
1839799483,6cyclictest26279-21hddtemp_smartct21:45:150
1839799480,15cyclictest5960-21/usr/sbin/munin00:30:290
134491480,4ptp4l26425-21apt-get22:55:141
134491480,14ptp4l41-21ksoftirqd/323:35:193
1839799474,6cyclictest134491ptp4l21:23:290
1839799473,6cyclictest0-21swapper/020:20:250
134491470,4ptp4l0-21swapper/320:50:433
18400994640,3cyclictest41-21ksoftirqd/320:40:003
1839999468,10cyclictest1317-21runrttasks23:04:212
1839799466,6cyclictest0-21swapper/020:50:240
1839799464,6cyclictest25811-21sed19:25:140
134491460,4ptp4l7908-21apt-get23:25:143
134491460,4ptp4l241ktimersoftd/123:25:181
1839799454,5cyclictest0-21swapper/021:37:350
1839799452,5cyclictest9-21ksoftirqd/019:35:160
134491450,4ptp4l0-21swapper/300:12:383
134491450,4ptp4l0-21swapper/120:19:461
134491450,4ptp4l0-21swapper/023:35:160
18400994439,3cyclictest41-21ksoftirqd/322:35:013
1839799445,5cyclictest0-21swapper/022:15:110
1839799444,5cyclictest17998-21/usr/sbin/munin21:25:280
134491440,4ptp4l0-21swapper/120:35:591
134491440,3ptp4l0-21swapper/121:54:131
134491440,3ptp4l0-21swapper/023:41:210
134491440,10ptp4l0-21swapper/120:34:241
46198430,10rtkit-daemon0-21swapper/319:38:283
18400994337,3cyclictest41-21ksoftirqd/321:40:003
1839799437,6cyclictest0-21swapper/021:53:480
1839799432,5cyclictest0-21swapper/000:02:310
134691430,10getstats0-21swapper/323:05:253
134491430,5ptp4l10409-21meminfo21:10:193
134491430,5ptp4l0-21swapper/323:55:243
134491430,4ptp4l0-21swapper/119:12:541
134491430,3ptp4l0-21swapper/121:41:411
134491430,3ptp4l0-21swapper/023:25:520
1839799420,15cyclictest30310-21ls23:00:260
134491420,5ptp4l31253-21df23:05:150
134491420,5ptp4l0-21swapper/020:40:110
134491420,4ptp4l19568-21irqstats21:30:171
134491420,4ptp4l18428-21apt-get19:10:123
134491420,4ptp4l17542-21ntp_states21:25:221
134491420,4ptp4l17215-21apt-get22:35:120
134491420,4ptp4l11833-21apt-get20:05:130
134491420,4ptp4l0-21swapper/321:58:033
134491420,4ptp4l0-21swapper/121:23:521
134491420,3ptp4l4868-21apt-get21:00:123
134491420,3ptp4l0-21swapper/123:00:181
46198410,10rtkit-daemon0-21swapper/322:10:273
1839999418,10cyclictest1317-21runrttasks20:03:322
1839799414,5cyclictest0-21swapper/022:00:170
134691410,10getstats0-21swapper/323:20:183
134691410,10getstats0-21swapper/323:10:023
134691410,10getstats0-21swapper/319:57:533
134691410,10getstats0-21swapper/300:05:303
134491410,5ptp4l1345-21iostat_ios22:00:191
134491410,5ptp4l0-21swapper/321:30:193
134491410,5ptp4l0-21swapper/100:35:261
134491410,5ptp4l0-21swapper/023:15:220
134491410,4ptp4l6174-21iostat23:20:171
134491410,4ptp4l30355-21apt-get19:35:121
134491410,4ptp4l24700-21iostat_ios22:50:170
134491410,4ptp4l24087-21apt-get00:00:133
134491410,4ptp4l23981-21hddtemp_smartct21:40:140
134491410,4ptp4l17780-21iostat22:35:181
134491410,4ptp4l17732-21iostat23:45:181
134491410,4ptp4l0-21swapper/320:18:183
134491410,4ptp4l0-21swapper/319:30:203
134491410,3ptp4l11757-21apt-get21:15:113
18400994034,3cyclictest41-21ksoftirqd/322:55:193
18400994034,3cyclictest41-21ksoftirqd/300:35:153
18397994031,3cyclictest9-21ksoftirqd/019:30:190
1839799402,7cyclictest15290-21ntpq20:10:220
1839799402,6cyclictest0-21swapper/022:33:590
1839799400,6cyclictest2517-21swap00:20:260
134691400,10getstats0-21swapper/321:53:003
134491400,6ptp4l0-21swapper/119:09:281
134491400,5ptp4l3448-21df_inode22:05:130
134491400,5ptp4l0-21swapper/123:05:171
134491400,5ptp4l0-21swapper/022:45:140
134491400,5ptp4l0-21swapper/021:55:140
134491400,5ptp4l0-21swapper/019:40:130
134491400,4ptp4l6387-21meminfo22:10:181
134491400,4ptp4l32301-21ntp_states00:15:220
134491400,4ptp4l23605-21df20:30:130
134491400,4ptp4l21150-21hddtemp_smartct19:15:150
134491400,4ptp4l15298-21hddtemp_smartct23:40:161
134491400,4ptp4l13960-21sensors_temp22:25:253
134491400,4ptp4l13124-21iostat_ios23:35:181
134491400,4ptp4l0-21swapper/322:07:553
134491400,4ptp4l0-21swapper/320:49:273
134491400,4ptp4l0-21swapper/121:10:271
134491400,4ptp4l0-21swapper/120:52:101
134491400,4ptp4l0-21swapper/100:06:351
134491400,4ptp4l0-21swapper/019:45:200
134491400,3ptp4l5975-21apt-get00:30:113
134491400,3ptp4l3145-21apt-get22:05:091
134491400,3ptp4l30658-21apt-get21:55:131
134491400,3ptp4l27802-21ls00:05:250
134491400,3ptp4l2057-21ntp_states23:10:201
46198390,9rtkit-daemon0-21swapper/322:18:073
18400993934,3cyclictest41-21ksoftirqd/322:40:243
18400993934,3cyclictest41-21ksoftirqd/319:40:183
18400993934,3cyclictest41-21ksoftirqd/319:30:003
134491390,4ptp4l29218-21phc2sys19:30:241
134491390,4ptp4l22400-21iostat22:45:181
134491390,4ptp4l17597-21ntp_states20:15:240
134491390,4ptp4l0-21swapper/321:25:183
134491390,4ptp4l0-21swapper/320:25:243
134491390,4ptp4l0-21swapper/300:15:123
134491390,4ptp4l0-21swapper/122:52:001
134491390,4ptp4l0-21swapper/122:30:201
134491390,4ptp4l0-21swapper/122:20:181
134491390,4ptp4l0-21swapper/121:38:151
134491390,4ptp4l0-21swapper/023:48:330
134491390,4ptp4l0-21swapper/022:40:210
134491390,4ptp4l0-21swapper/022:10:120
134491390,4ptp4l0-21swapper/021:30:120
134491390,4ptp4l0-21swapper/021:05:240
134491390,4ptp4l0-21swapper/000:25:270
134491390,3ptp4l8687-21memory22:15:191
134491390,3ptp4l2625-21apt-get19:45:113
134491390,3ptp4l10514-21diskstats23:30:161
134491390,3ptp4l10514-21diskstats23:30:161
134491390,3ptp4l0-21swapper/020:39:450
18400993833,3cyclictest41-21ksoftirqd/323:19:063
18400993833,3cyclictest41-21ksoftirqd/322:45:183
18400993833,3cyclictest41-21ksoftirqd/320:05:183
18400993829,3cyclictest41-21ksoftirqd/322:35:243
1839799382,14cyclictest19517-21ntpq19:10:220
134491380,4ptp4l6549-21vmstat21:00:300
134491380,4ptp4l0-21swapper/323:45:193
134491380,4ptp4l0-21swapper/320:13:283
134491380,4ptp4l0-21swapper/320:00:033
134491380,4ptp4l0-21swapper/119:43:081
134491380,4ptp4l0-21swapper/023:52:380
134491380,4ptp4l0-21swapper/023:10:060
134491380,4ptp4l0-21swapper/019:20:170
134491380,3ptp4l9839-21df_inode20:00:121
134491380,3ptp4l22872-21ntp_offset23:55:221
134491380,3ptp4l0-21swapper/321:20:103
134491380,3ptp4l0-21swapper/120:10:211
18400993732,3cyclictest41-21ksoftirqd/323:00:183
18400993732,3cyclictest41-21ksoftirqd/321:45:003
18400993731,3cyclictest41-21ksoftirqd/319:15:123
1840099370,2cyclictest121rcu_preempt19:50:093
134491370,4ptp4l5104-21unixbench_singl00:25:271
134491370,4ptp4l0-21swapper/323:30:243
134491370,4ptp4l0-21swapper/323:30:243
134491370,4ptp4l0-21swapper/320:31:003
134491370,4ptp4l0-21swapper/319:20:183
134491370,4ptp4l0-21swapper/100:10:141
134491370,3ptp4l0-21swapper/321:08:123
134491370,3ptp4l0-21swapper/320:43:413
134491370,3ptp4l0-21swapper/123:50:501
134491370,3ptp4l0-21swapper/120:57:391
134491370,3ptp4l0-21swapper/120:27:101
134491370,3ptp4l0-21swapper/100:18:371
134491370,3ptp4l0-21swapper/022:55:140
134491370,3ptp4l0-21swapper/020:57:380
134491370,2ptp4l25200-21ntp_states00:00:231
46198360,4rtkit-daemon0-21swapper/322:50:083
134491360,3ptp4l0-21swapper/322:03:313
134491350,3ptp4l0-21swapper/120:47:061
134491350,3ptp4l0-21swapper/100:22:091
137891254,12phc2sys16062-21apt-get19:05:112
46198200,9rtkit-daemon0-21swapper/319:06:543
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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