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2025-12-08 - 15:19
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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 Dec 08, 2025 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1989121660,5sleep0955499cyclictest19:30:270
89162750,4sleep08914-21perf23:45:000
2847191690,4ptp4l0-21swapper/321:06:103
2847191670,5ptp4l0-21swapper/322:00:133
2847191670,25ptp4l0-21swapper/322:25:003
2847191650,5ptp4l0-21swapper/300:15:253
10992620,4sleep10-21swapper/123:25:271
134022610,2sleep013406-21irqrtprio21:35:180
134022610,2sleep013406-21irqrtprio21:35:180
955599601,5cyclictest2849491getstats20:55:161
955599601,5cyclictest2849491getstats20:55:161
228872600,3sleep022891-21timerandwakeup19:35:280
955499592,23cyclictest0-21swapper/021:55:290
2847191590,4ptp4l0-21swapper/022:47:200
2847191590,3ptp4l0-21swapper/319:59:583
132472590,3sleep313249-21timerwakeupswit23:50:293
2847191580,4ptp4l0-21swapper/200:00:272
2847191570,3ptp4l0-21swapper/219:35:392
2847191560,4ptp4l0-21swapper/300:22:153
2847191560,4ptp4l0-21swapper/021:34:270
2847191560,3ptp4l0-21swapper/223:30:112
2847191560,3ptp4l0-21swapper/200:09:242
955499551,24cyclictest28369-21taskset20:58:390
955499551,24cyclictest28369-21taskset20:58:390
955499550,24cyclictest27124-21taskset23:12:410
2847191550,4ptp4l0-21swapper/323:55:263
2847191550,3ptp4l0-21swapper/320:52:483
2847191550,3ptp4l0-21swapper/320:43:573
955499542,22cyclictest0-21swapper/020:19:100
955499541,30cyclictest3024-21taskset21:14:110
955499540,23cyclictest21668-21taskset21:54:540
2847191540,4ptp4l0-21swapper/322:35:103
2847191540,3ptp4l0-21swapper/322:55:293
2847191540,3ptp4l0-21swapper/321:35:073
2847191540,3ptp4l0-21swapper/321:35:073
955499531,48cyclictest29931-21phc2sys21:00:250
955499530,19cyclictest2847191ptp4l19:20:270
2847191530,4ptp4l0-21swapper/320:38:453
955499521,25cyclictest20318-21taskset22:59:300
955499520,22cyclictest32239-21runrttasks00:31:220
2847191520,4ptp4l0-21swapper/322:13:093
2847191520,4ptp4l0-21swapper/121:33:571
955499510,23cyclictest952-21taskset22:18:410
2847191510,5ptp4l0-21swapper/019:07:390
2847191510,4ptp4l0-21swapper/320:45:303
955499500,22cyclictest2847191ptp4l19:45:210
2847191500,4ptp4l0-21swapper/320:56:153
2847191500,4ptp4l0-21swapper/320:56:153
2847191490,4ptp4l0-21swapper/322:09:193
2847191490,4ptp4l0-21swapper/322:09:193
2847191490,4ptp4l0-21swapper/321:47:503
2847191480,5ptp4l8064-21/usr/sbin/munin19:05:191
2847191480,4ptp4l0-21swapper/322:17:003
2847191480,4ptp4l0-21swapper/222:37:522
2847191480,13ptp4l0-21swapper/100:15:271
2847191480,11ptp4l0-21swapper/120:10:201
2847191470,7ptp4l0-21swapper/223:16:152
2847191470,13ptp4l0-21swapper/000:10:220
2847191470,10ptp4l0-21swapper/119:40:281
2847191470,10ptp4l0-21swapper/119:40:281
2847191460,5ptp4l0-21swapper/321:33:213
2847191460,3ptp4l0-21swapper/322:40:173
2847191460,11ptp4l0-21swapper/022:23:410
2847191460,10ptp4l0-21swapper/119:45:421
2847191450,9ptp4l0-21swapper/020:13:520
2847191450,5ptp4l9343-21python21:25:260
2847191450,4ptp4l0-21swapper/323:21:403
2847191450,11ptp4l0-21swapper/200:39:322
2847191450,10ptp4l0-21swapper/222:18:112
2847191450,10ptp4l0-21swapper/200:16:192
2847191450,10ptp4l0-21swapper/122:40:261
2847191440,7ptp4l0-21swapper/222:25:152
2847191440,5ptp4l24853-21meminfo20:50:220
2847191440,5ptp4l0-21swapper/223:45:132
2847191440,5ptp4l0-21swapper/220:10:172
2847191440,5ptp4l0-21swapper/019:55:280
2847191440,10ptp4l0-21swapper/222:34:432
955499430,31cyclictest26306-21taskset22:04:460
2847191430,9ptp4l0-21swapper/222:06:222
2847191430,9ptp4l0-21swapper/222:06:222
2847191430,9ptp4l0-21swapper/119:53:041
2847191430,8ptp4l30919-21sed19:55:162
2847191430,6ptp4l18990-21df_inode00:05:150
2847191430,4ptp4l9678-21diskstats23:45:160
2847191430,4ptp4l7789-21meminfo23:40:221
2847191430,4ptp4l7622-21apt-get20:15:162
2847191430,4ptp4l326-21apt-get00:35:133
2847191430,4ptp4l30867-21meminfo23:20:212
2847191430,4ptp4l22959-21apt-get23:05:183
2847191430,4ptp4l20636-21apt-get23:00:141
2847191430,4ptp4l18680-21apt-get00:05:131
2847191430,4ptp4l0-21swapper/319:46:443
2847191430,4ptp4l0-21swapper/219:29:252
2847191430,3ptp4l4498-21apt-get23:35:130
2847191430,3ptp4l0-21swapper/100:28:071
2847191420,5ptp4l29106-21apt-get22:10:122
2847191420,5ptp4l1293-21snmpd19:34:343
2847191420,5ptp4l0-21swapper/300:00:173
2847191420,5ptp4l0-21swapper/222:50:022
2847191420,4ptp4l955599cyclictest22:20:251
2847191420,4ptp4l7990-21apt-get21:25:131
2847191420,4ptp4l6832-21apt-get23:40:152
2847191420,4ptp4l3207-21df20:05:162
2847191420,4ptp4l29348-21meminfo19:50:220
2847191420,4ptp4l27539-21meminfo22:05:220
2847191420,4ptp4l27539-21meminfo22:05:220
2847191420,4ptp4l14947-21df_inode20:30:161
2847191420,4ptp4l0-21swapper/319:35:513
2847191420,3ptp4l30478-21apt-get00:30:112
2847191410,9ptp4l0-21swapper/023:02:090
2847191410,5ptp4l33-21ksoftirqd/200:10:152
2847191410,5ptp4l0-21swapper/322:45:133
2847191410,5ptp4l0-21swapper/321:40:233
2847191410,5ptp4l0-21swapper/320:15:193
2847191410,5ptp4l0-21swapper/223:35:172
2847191410,5ptp4l0-21swapper/120:20:211
2847191410,5ptp4l0-21swapper/021:49:110
2847191410,5ptp4l0-21swapper/020:06:170
2847191410,4ptp4l4315-21mailstats20:05:261
2847191410,4ptp4l3313-21ntp_states23:30:250
2847191410,4ptp4l29519-21ntp_states19:50:243
2847191410,4ptp4l29245-21irqstats19:50:212
2847191410,4ptp4l28487-21diskstats00:25:192
2847191410,4ptp4l2186-21apt-get23:30:153
2847191410,4ptp4l1588-21memory20:00:210
2847191410,4ptp4l14288-21apt-get19:20:133
2847191410,4ptp4l12914-21meminfo19:15:212
2847191410,4ptp4l0-21swapper/323:15:163
2847191410,4ptp4l0-21swapper/319:40:143
2847191410,4ptp4l0-21swapper/319:40:143
2847191410,4ptp4l0-21swapper/300:05:193
2847191410,4ptp4l0-21swapper/221:34:332
2847191410,4ptp4l0-21swapper/220:55:142
2847191410,4ptp4l0-21swapper/220:55:142
2847191410,4ptp4l0-21swapper/121:40:211
2847191410,4ptp4l0-21swapper/023:50:130
2847191410,4ptp4l0-21swapper/019:15:150
2847191410,3ptp4l28379-21df00:25:180
2847191410,3ptp4l0-21swapper/321:25:003
955499400,20cyclictest305-21taskset00:35:100
2847191400,6ptp4l0-21swapper/320:33:463
2847191400,5ptp4l26694-21awk23:10:263
2847191400,5ptp4l21149-21cat19:35:002
2847191400,5ptp4l0-21swapper/223:55:252
2847191400,5ptp4l0-21swapper/123:15:281
2847191400,5ptp4l0-21swapper/100:35:151
2847191400,5ptp4l0-21swapper/023:15:150
2847191400,5ptp4l0-21swapper/022:10:140
2847191400,5ptp4l0-21swapper/020:27:350
2847191400,4ptp4l6434-21ntp_states20:10:263
2847191400,4ptp4l4624-21sed22:25:190
2847191400,4ptp4l22912-21/usr/sbin/munin19:35:281
2847191400,4ptp4l0-21swapper/323:35:033
2847191400,4ptp4l0-21swapper/323:28:263
2847191400,4ptp4l0-21swapper/322:30:153
2847191400,4ptp4l0-21swapper/321:59:283
2847191400,4ptp4l0-21swapper/321:19:313
2847191400,4ptp4l0-21swapper/319:14:083
2847191400,4ptp4l0-21swapper/319:14:083
2847191400,4ptp4l0-21swapper/223:50:322
2847191400,4ptp4l0-21swapper/223:29:342
2847191400,4ptp4l0-21swapper/223:10:252
2847191400,4ptp4l0-21swapper/223:05:592
2847191400,4ptp4l0-21swapper/222:43:562
2847191400,4ptp4l0-21swapper/221:42:582
2847191400,4ptp4l0-21swapper/221:20:222
2847191400,4ptp4l0-21swapper/221:06:562
2847191400,4ptp4l0-21swapper/220:37:312
2847191400,4ptp4l0-21swapper/220:25:302
2847191400,4ptp4l0-21swapper/220:20:382
2847191400,4ptp4l0-21swapper/220:01:092
2847191400,4ptp4l0-21swapper/123:35:171
2847191400,4ptp4l0-21swapper/123:12:431
2847191400,4ptp4l0-21swapper/100:30:151
2847191400,4ptp4l0-21swapper/100:20:131
2847191400,4ptp4l0-21swapper/023:29:520
2847191400,4ptp4l0-21swapper/023:20:250
2847191400,4ptp4l0-21swapper/023:05:010
2847191400,4ptp4l0-21swapper/022:41:120
2847191400,4ptp4l0-21swapper/022:32:380
2847191400,4ptp4l0-21swapper/021:40:140
2847191400,4ptp4l0-21swapper/021:24:440
2847191400,4ptp4l0-21swapper/020:20:540
2847191400,4ptp4l0-21swapper/000:15:270
2847191400,3ptp4l956-21apt-get21:10:142
2847191400,3ptp4l9518-21memory22:35:200
2847191400,3ptp4l22710-21ntp_states20:45:240
2847191400,3ptp4l22143-21df21:55:141
2847191400,3ptp4l18069-21ntp_states20:35:250
2847191400,3ptp4l17893-21iostat_ios21:45:191
2847191400,3ptp4l17843-21apt-get22:55:052
2847191400,3ptp4l1072-21apt-get22:20:032
2847191400,3ptp4l0-21swapper/223:01:102
955599392,22cyclictest0-21swapper/123:56:261
2847191390,5ptp4l0-21swapper/120:25:231
2847191390,5ptp4l0-21swapper/021:15:210
2847191390,4ptp4l14340-21awk22:45:221
2847191390,4ptp4l0-21swapper/323:40:273
2847191390,4ptp4l0-21swapper/323:00:163
2847191390,4ptp4l0-21swapper/322:54:563
2847191390,4ptp4l0-21swapper/322:25:143
2847191390,4ptp4l0-21swapper/321:50:123
2847191390,4ptp4l0-21swapper/321:25:153
2847191390,4ptp4l0-21swapper/321:12:023
2847191390,4ptp4l0-21swapper/320:29:503
2847191390,4ptp4l0-21swapper/320:20:223
2847191390,4ptp4l0-21swapper/320:05:063
2847191390,4ptp4l0-21swapper/319:25:293
2847191390,4ptp4l0-21swapper/319:15:253
2847191390,4ptp4l0-21swapper/300:30:233
2847191390,4ptp4l0-21swapper/300:25:113
2847191390,4ptp4l0-21swapper/300:10:253
2847191390,4ptp4l0-21swapper/222:45:002
2847191390,4ptp4l0-21swapper/222:00:472
2847191390,4ptp4l0-21swapper/221:57:322
2847191390,4ptp4l0-21swapper/221:50:292
2847191390,4ptp4l0-21swapper/221:47:572
2847191390,4ptp4l0-21swapper/221:37:492
2847191390,4ptp4l0-21swapper/221:37:492
2847191390,4ptp4l0-21swapper/221:27:462
2847191390,4ptp4l0-21swapper/221:16:422
2847191390,4ptp4l0-21swapper/220:45:382
2847191390,4ptp4l0-21swapper/220:40:212
2847191390,4ptp4l0-21swapper/220:32:472
2847191390,4ptp4l0-21swapper/219:45:232
2847191390,4ptp4l0-21swapper/219:10:522
2847191390,4ptp4l0-21swapper/219:10:522
2847191390,4ptp4l0-21swapper/200:21:162
2847191390,4ptp4l0-21swapper/123:30:171
2847191390,4ptp4l0-21swapper/123:20:241
2847191390,4ptp4l0-21swapper/122:35:171
2847191390,4ptp4l0-21swapper/122:30:511
2847191390,4ptp4l0-21swapper/122:27:151
2847191390,4ptp4l0-21swapper/122:15:291
2847191390,4ptp4l0-21swapper/122:10:181
2847191390,4ptp4l0-21swapper/122:06:071
2847191390,4ptp4l0-21swapper/122:06:071
2847191390,4ptp4l0-21swapper/122:00:181
2847191390,4ptp4l0-21swapper/121:52:301
2847191390,4ptp4l0-21swapper/121:38:411
2847191390,4ptp4l0-21swapper/121:38:411
2847191390,4ptp4l0-21swapper/121:03:301
2847191390,4ptp4l0-21swapper/120:17:251
2847191390,4ptp4l0-21swapper/120:03:121
2847191390,4ptp4l0-21swapper/100:10:281
2847191390,4ptp4l0-21swapper/100:04:361
2847191390,4ptp4l0-21swapper/022:54:540
2847191390,4ptp4l0-21swapper/020:40:280
2847191390,4ptp4l0-21swapper/020:30:140
2847191390,4ptp4l0-21swapper/019:42:170
2847191390,4ptp4l0-21swapper/019:42:170
2847191390,4ptp4l0-21swapper/019:25:270
2847191390,4ptp4l0-21swapper/019:11:120
2847191390,4ptp4l0-21swapper/019:11:120
2847191390,4ptp4l0-21swapper/000:21:140
2847191390,3ptp4l23897-21apt-get20:50:152
2847191390,3ptp4l14873-21iostat_ios19:20:231
2847191390,3ptp4l14351-21df_inode23:55:160
2847191390,3ptp4l0-21swapper/123:50:211
2847191390,3ptp4l0-21swapper/122:55:201
2847191390,3ptp4l0-21swapper/000:00:450
2847191390,2ptp4l0-21swapper/323:45:213
2847191380,4ptp4l0-21swapper/320:00:143
2847191380,4ptp4l0-21swapper/219:42:162
2847191380,4ptp4l0-21swapper/219:42:162
2847191380,4ptp4l0-21swapper/219:20:122
2847191380,4ptp4l0-21swapper/123:45:211
2847191380,4ptp4l0-21swapper/122:51:201
2847191380,4ptp4l0-21swapper/121:20:171
2847191380,4ptp4l0-21swapper/121:17:421
2847191380,4ptp4l0-21swapper/121:12:231
2847191380,4ptp4l0-21swapper/119:55:201
2847191380,4ptp4l0-21swapper/119:31:511
2847191380,4ptp4l0-21swapper/119:11:141
2847191380,4ptp4l0-21swapper/119:11:141
2847191380,4ptp4l0-21swapper/021:10:010
2847191380,3ptp4l0-21swapper/321:00:033
2847191380,3ptp4l0-21swapper/221:00:032
2847191380,3ptp4l0-21swapper/120:35:021
2847191380,3ptp4l0-21swapper/119:25:201
2847191370,4ptp4l0-21swapper/121:07:141
2847191370,4ptp4l0-21swapper/120:52:191
2847191370,4ptp4l0-21swapper/120:45:261
2847191370,4ptp4l0-21swapper/119:18:001
2847191370,3ptp4l0-21swapper/123:08:381
2847191360,3ptp4l0-21swapper/120:40:011
89372153,6sleep20-21swapper/219:05:582
92412114,3sleep30-21swapper/319:09:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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