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2025-07-03 - 08:51
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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 all highest latencies:
System rackdslot1.osadl.org (updated Thu Jul 03, 2025 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16120997111,23cyclictest1293-21snmpd00:26:393
16120997111,23cyclictest1293-21snmpd00:26:393
2847191690,4ptp4l32516-21sed22:05:230
16120996815,50cyclictest20608-21taskset19:18:323
2847191670,4ptp4l13604-21iostat_ios22:35:240
16120996615,11cyclictest918-21chrt23:16:223
2847191650,4ptp4l26868-21apt-get21:55:132
16120996515,12cyclictest20016-21taskset23:59:383
16120996514,11cyclictest21578-21taskset21:42:203
2847191630,4ptp4l0-21swapper/100:30:191
16120996315,11cyclictest32216-21taskset19:43:563
16120996315,11cyclictest32216-21taskset19:43:563
16120996212,14cyclictest25606-21switchtime20:40:263
2847191610,6ptp4l0-21swapper/219:08:382
2847191610,5ptp4l0-21swapper/000:05:200
237652610,3sleep30-21swapper/300:05:213
2847191600,5ptp4l0-21swapper/000:15:220
1612099603,21cyclictest0-21swapper/322:47:133
16120996014,10cyclictest5805-21fschecks_count20:00:183
2847191590,4ptp4l19313-21cut23:55:272
2847191590,4ptp4l0-21swapper/121:55:251
2847191590,3ptp4l0-21swapper/022:25:290
16118995919,8cyclictest25-21ksoftirqd/123:00:001
2847191580,4ptp4l0-21swapper/223:25:132
2847191580,4ptp4l0-21swapper/122:21:041
2847191580,4ptp4l0-21swapper/121:35:201
2847191580,4ptp4l0-21swapper/020:23:450
2847191580,3ptp4l0-21swapper/223:16:482
2847191580,13ptp4l15198-21ls19:05:241
16120995815,10cyclictest28603-21taskset21:55:593
16120995814,9cyclictest15897-21basename22:40:233
2847191570,4ptp4l0-21swapper/200:09:112
2847191570,4ptp4l0-21swapper/120:35:251
2847191570,3ptp4l0-21swapper/221:08:592
2847191570,3ptp4l0-21swapper/021:05:300
2847191570,3ptp4l0-21swapper/020:45:250
2847191560,4ptp4l0-21swapper/223:47:472
2847191560,4ptp4l0-21swapper/223:47:472
2847191560,4ptp4l0-21swapper/221:45:512
2847191560,4ptp4l0-21swapper/200:25:252
2847191560,4ptp4l0-21swapper/200:25:252
2847191560,2ptp4l0-21swapper/123:35:241
162782560,6sleep10-21swapper/120:20:251
16120995611,14cyclictest22324-21apt-get22:55:163
16120995610,12cyclictest10171-21latency_hist21:20:003
2847191550,4ptp4l0-21swapper/121:52:321
2847191550,4ptp4l0-21swapper/121:42:141
2847191550,4ptp4l0-21swapper/023:15:430
2847191550,4ptp4l0-21swapper/022:19:510
2847191550,3ptp4l0-21swapper/123:08:591
2847191550,3ptp4l0-21swapper/121:05:311
2847191550,3ptp4l0-21swapper/119:28:491
1612099559,17cyclictest25853-21df_abs00:10:173
2847191540,7ptp4l0-21swapper/200:38:312
2847191540,4ptp4l0-21swapper/221:26:012
2847191540,4ptp4l0-21swapper/022:48:090
2847191540,4ptp4l0-21swapper/021:28:010
2847191540,3ptp4l0-21swapper/319:08:103
2847191540,3ptp4l0-21swapper/223:41:532
2847191530,4ptp4l0-21swapper/221:36:312
2847191530,4ptp4l0-21swapper/122:13:031
2847191530,4ptp4l0-21swapper/120:11:201
2847191530,4ptp4l0-21swapper/100:17:551
2847191530,4ptp4l0-21swapper/022:58:050
2847191530,4ptp4l0-21swapper/000:01:360
2847191530,3ptp4l0-21swapper/119:10:241
2847191530,3ptp4l0-21swapper/019:33:520
16120995318,6cyclictest0-21swapper/323:40:223
16120995317,11cyclictest7953-21taskset22:22:253
16120995316,11cyclictest3418-21taskset23:22:313
16120995316,10cyclictest25188-21taskset19:27:503
2847191520,6ptp4l6239-21hddtemp_smartct21:10:202
2847191520,4ptp4l0-21swapper/223:51:312
2847191520,4ptp4l0-21swapper/121:25:251
2847191520,4ptp4l0-21swapper/119:38:521
2847191520,3ptp4l0-21swapper/123:11:441
2847191520,12ptp4l0-21swapper/000:21:400
1612099528,11cyclictest32751-21processes22:05:263
2847191510,4ptp4l0-21swapper/123:27:171
2847191510,4ptp4l0-21swapper/122:00:061
2847191510,4ptp4l0-21swapper/121:20:461
2847191510,4ptp4l0-21swapper/119:52:461
2847191510,4ptp4l0-21swapper/119:23:531
2847191510,4ptp4l0-21swapper/100:35:171
2847191510,4ptp4l0-21swapper/023:53:270
2847191510,10ptp4l0-21swapper/020:10:100
1612099513,12cyclictest14995-21cpu20:20:133
2847191500,4ptp4l0-21swapper/100:08:011
2847191500,4ptp4l0-21swapper/020:16:540
2847191500,3ptp4l0-21swapper/100:28:091
2847191500,3ptp4l0-21swapper/100:28:091
2847191500,3ptp4l0-21swapper/021:34:510
16120995017,10cyclictest2129-21taskset19:48:203
16120995017,10cyclictest10370-21seq23:37:583
16120995016,11cyclictest28594-21taskset20:49:263
16120995016,11cyclictest14765-21taskset21:29:013
2847191490,4ptp4l0-21swapper/121:12:501
2847191490,3ptp4l0-21swapper/220:51:392
2847191490,3ptp4l0-21swapper/120:34:251
2847191490,3ptp4l0-21swapper/100:00:211
2847191490,3ptp4l0-21swapper/021:49:590
16120994912,9cyclictest1293-21snmpd21:24:303
16120994910,7cyclictest2847191ptp4l21:35:193
16118994922,4cyclictest25-21ksoftirqd/121:50:001
2847191480,4ptp4l0-21swapper/100:12:501
2847191480,3ptp4l0-21swapper/119:15:151
16120994818,26cyclictest22028-21/usr/sbin/munin21:45:313
16120994817,12cyclictest12587-21taskset22:32:443
16120994816,11cyclictest22795-21taskset19:21:453
16120994816,10cyclictest11888-21taskset20:11:553
2847191470,4ptp4l0-21swapper/223:10:432
2847191470,3ptp4l0-21swapper/000:36:230
16120994716,17cyclictest3486-21taskset22:14:353
16120994714,10cyclictest31187-21taskset20:55:133
16120994713,9cyclictest7929-21taskset23:31:193
16120994712,10cyclictest26607-21runrttasks23:03:493
16118994716,9cyclictest25-21ksoftirqd/123:24:591
16118994715,4cyclictest25-21ksoftirqd/121:15:251
2847191460,5ptp4l0-21swapper/019:05:590
2847191460,3ptp4l0-21swapper/123:50:231
16120994616,11cyclictest2452-21runrttasks00:30:013
16118994617,4cyclictest25-21ksoftirqd/122:30:191
16118994617,4cyclictest25-21ksoftirqd/120:50:151
2847191450,9ptp4l0-21swapper/020:37:060
2847191450,6ptp4l0-21swapper/323:10:233
2847191450,4ptp4l8799-21diskstats23:35:172
2847191450,4ptp4l7227-21ls21:10:293
2847191450,4ptp4l0-21swapper/122:17:081
2847191450,4ptp4l0-21swapper/119:40:101
2847191450,4ptp4l0-21swapper/119:40:101
2847191450,11ptp4l0-21swapper/022:00:070
1612099459,5cyclictest2849491getstats23:50:263
1612099458,9cyclictest13973-21switchtime20:15:263
16120994518,10cyclictest5786-21seq22:19:313
16120994517,11cyclictest26584-21seq21:54:393
16120994514,28cyclictest28309-21python23:05:263
16120994510,14cyclictest29012-21ntpq00:15:243
16118994511,6cyclictest25-21ksoftirqd/120:40:261
2847191440,9ptp4l0-21swapper/223:31:432
2847191440,9ptp4l0-21swapper/219:16:132
2847191440,4ptp4l0-21swapper/023:40:570
2847191440,3ptp4l17295-21apt-get20:25:132
2847191440,3ptp4l0-21swapper/000:33:270
16120994417,10cyclictest10426-21seq22:29:373
16120994414,13cyclictest14888-21taskset22:36:583
1611899449,5cyclictest25-21ksoftirqd/121:00:231
16118994426,4cyclictest25-21ksoftirqd/119:59:381
16118994416,9cyclictest25-21ksoftirqd/120:00:211
2847191430,9ptp4l0-21swapper/222:10:042
2847191430,9ptp4l0-21swapper/220:44:122
2847191430,9ptp4l0-21swapper/220:33:462
2847191430,9ptp4l0-21swapper/220:08:312
2847191430,9ptp4l0-21swapper/219:50:402
2847191430,6ptp4l0-21swapper/021:00:140
2847191430,5ptp4l20936-21/usr/sbin/munin21:40:250
2847191430,5ptp4l0-21swapper/223:20:272
2847191430,5ptp4l0-21swapper/221:15:192
2847191430,4ptp4l31275-21ls19:40:230
2847191430,4ptp4l31275-21ls19:40:230
2847191430,4ptp4l0-21swapper/123:30:061
2847191430,4ptp4l0-21swapper/122:50:131
2847191430,4ptp4l0-21swapper/021:22:000
2847191430,3ptp4l15407-21apt-get22:40:180
16120994315,25cyclictest9804-21runrttasks20:09:493
16120994310,7cyclictest30630-21ls22:00:283
16118994329,3cyclictest25-21ksoftirqd/120:45:291
2847191420,9ptp4l0-21swapper/220:10:312
2847191420,5ptp4l0-21swapper/123:00:231
2847191420,4ptp4l31341-21ntp_states00:20:232
2847191420,4ptp4l25103-21apt-get00:10:022
2847191420,4ptp4l24674-21hddtemp_smartct20:40:170
2847191420,4ptp4l13169-21iostat20:15:181
2847191420,4ptp4l1258-21ntp_states19:45:231
2847191420,4ptp4l0-21swapper/120:25:151
2847191420,4ptp4l0-21swapper/100:20:371
2847191420,4ptp4l0-21swapper/023:23:170
2847191420,4ptp4l0-21swapper/021:37:170
2847191420,4ptp4l0-21swapper/020:55:170
2847191420,4ptp4l0-21swapper/020:31:420
2847191420,4ptp4l0-21swapper/019:46:250
2847191420,3ptp4l6756-21meminfo21:10:240
2847191420,3ptp4l27272-21df_inode23:05:162
2847191420,3ptp4l20322-21apt-get00:00:152
2847191420,3ptp4l15097-21apt-get21:30:141
2847191420,3ptp4l0-21swapper/123:19:351
2847191420,3ptp4l0-21swapper/023:32:410
16120994215,12cyclictest30687-21taskset20:51:403
16120994213,12cyclictest2658-21taskset19:52:083
2847191410,8ptp4l8817-21fschecks_time22:25:171
2847191410,6ptp4l0-21swapper/020:26:180
2847191410,5ptp4l32396-21latency22:05:211
2847191410,5ptp4l0-21swapper/220:59:392
2847191410,5ptp4l0-21swapper/120:05:291
2847191410,4ptp4l4823-21meminfo23:25:200
2847191410,4ptp4l27916-21apt-get19:35:130
2847191410,4ptp4l0-21swapper/323:45:253
2847191410,4ptp4l0-21swapper/323:45:253
2847191410,4ptp4l0-21swapper/300:39:053
2847191410,4ptp4l0-21swapper/300:00:173
2847191410,4ptp4l0-21swapper/222:20:262
2847191410,4ptp4l0-21swapper/221:23:142
2847191410,4ptp4l0-21swapper/221:04:282
2847191410,4ptp4l0-21swapper/220:46:252
2847191410,4ptp4l0-21swapper/219:55:372
2847191410,4ptp4l0-21swapper/219:38:062
2847191410,4ptp4l0-21swapper/219:30:102
2847191410,4ptp4l0-21swapper/200:30:292
2847191410,4ptp4l0-21swapper/122:42:031
2847191410,4ptp4l0-21swapper/023:48:370
2847191410,4ptp4l0-21swapper/023:48:370
2847191410,4ptp4l0-21swapper/023:04:450
2847191410,4ptp4l0-21swapper/022:51:150
2847191410,4ptp4l0-21swapper/022:23:330
2847191410,4ptp4l0-21swapper/022:10:120
2847191410,4ptp4l0-21swapper/021:53:070
2847191410,4ptp4l0-21swapper/019:59:520
2847191410,3ptp4l29846-21iostat23:10:210
2847191410,3ptp4l29330-21hddtemp_smartct20:50:160
2847191410,3ptp4l23882-21iostat19:25:180
2847191410,3ptp4l18805-21ls20:25:273
2847191410,3ptp4l18298-21iostat_ios22:45:221
2847191410,3ptp4l17996-21apt-get23:55:151
2847191410,3ptp4l11031-21diskstats22:30:152
2847191410,3ptp4l0-21swapper/000:25:410
2847191410,3ptp4l0-21swapper/000:25:410
2847191410,2ptp4l28376-21ls21:55:270
16120994115,11cyclictest16880-21chrt21:31:273
16118994110,3cyclictest25-21ksoftirqd/123:45:181
16118994110,3cyclictest25-21ksoftirqd/123:45:181
2847191400,5ptp4l0-21swapper/319:10:013
2847191400,5ptp4l0-21swapper/221:53:292
2847191400,4ptp4l0-21swapper/322:50:473
2847191400,4ptp4l0-21swapper/321:00:183
2847191400,4ptp4l0-21swapper/320:30:053
2847191400,4ptp4l0-21swapper/223:01:292
2847191400,4ptp4l0-21swapper/222:55:292
2847191400,4ptp4l0-21swapper/222:52:152
2847191400,4ptp4l0-21swapper/222:35:432
2847191400,4ptp4l0-21swapper/222:15:492
2847191400,4ptp4l0-21swapper/222:01:272
2847191400,4ptp4l0-21swapper/221:40:172
2847191400,4ptp4l0-21swapper/220:37:442
2847191400,4ptp4l0-21swapper/220:21:522
2847191400,4ptp4l0-21swapper/220:15:112
2847191400,4ptp4l0-21swapper/220:00:092
2847191400,4ptp4l0-21swapper/219:45:342
2847191400,4ptp4l0-21swapper/219:20:482
2847191400,4ptp4l0-21swapper/123:40:311
2847191400,4ptp4l0-21swapper/122:38:261
2847191400,4ptp4l0-21swapper/023:56:330
2847191400,4ptp4l0-21swapper/023:35:210
2847191400,4ptp4l0-21swapper/023:05:050
2847191400,4ptp4l0-21swapper/022:31:100
2847191400,4ptp4l0-21swapper/021:15:160
2847191400,4ptp4l0-21swapper/020:08:220
2847191400,4ptp4l0-21swapper/020:00:210
2847191400,4ptp4l0-21swapper/019:53:290
2847191400,4ptp4l0-21swapper/000:10:170
2847191400,3ptp4l24428-21ntp_states19:25:232
2847191400,3ptp4l0-21swapper/222:40:272
2847191400,3ptp4l0-21swapper/019:10:160
1612099409,5cyclictest2849691phc2sys20:39:383
2847191390,4ptp4l18978-21df_inode19:15:120
2847191390,4ptp4l1611799cyclictest19:20:180
2847191390,4ptp4l0-21swapper/321:07:243
2847191390,4ptp4l0-21swapper/319:55:203
2847191390,4ptp4l0-21swapper/319:35:143
2847191390,4ptp4l0-21swapper/300:20:203
2847191390,4ptp4l0-21swapper/222:47:542
2847191390,4ptp4l0-21swapper/222:06:172
2847191390,4ptp4l0-21swapper/221:30:092
2847191390,4ptp4l0-21swapper/219:44:472
2847191390,4ptp4l0-21swapper/219:44:472
2847191390,4ptp4l0-21swapper/219:10:422
2847191390,4ptp4l0-21swapper/200:18:492
2847191390,4ptp4l0-21swapper/120:58:321
2847191390,4ptp4l0-21swapper/119:30:131
2847191380,4ptp4l0-21swapper/222:28:032
16120993814,10cyclictest3847-21chrt23:25:093
16120993714,10cyclictest27414-21taskset19:31:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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