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2025-06-28 - 22:58
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Sat Jun 28, 2025 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2698221640,5sleep11201899cyclictest10:00:011
2712121210,4sleep21201999cyclictest11:07:422
12020996412,11cyclictest1904-21chrt12:31:363
12020996312,11cyclictest6466-21chrt11:34:263
12020996311,39cyclictest31125-21apt-get09:00:163
2847191620,4ptp4l0-21swapper/210:09:142
2847191620,4ptp4l0-21swapper/207:55:202
12020996211,16cyclictest9764-21taskset08:14:553
12020996211,12cyclictest14615-21taskset09:30:363
12020996211,10cyclictest14116-21taskset08:20:353
2847191600,4ptp4l0-21swapper/207:47:542
2847191600,4ptp4l0-21swapper/008:50:180
2847191600,3ptp4l0-21swapper/108:31:031
2847191600,3ptp4l0-21swapper/011:05:390
1202099607,10cyclictest17023-21idleruntime-cro08:30:003
1201799608,12cyclictest0-21swapper/011:45:210
2847191590,4ptp4l0-21swapper/109:42:241
2847191590,3ptp4l0-21swapper/207:13:272
2847191590,3ptp4l0-21swapper/110:05:421
2847191590,3ptp4l0-21swapper/007:15:300
1202099598,18cyclictest0-21swapper/312:20:323
2847191580,3ptp4l0-21swapper/209:55:222
2847191580,3ptp4l0-21swapper/110:46:451
2847191580,3ptp4l0-21swapper/011:15:240
12020995812,15cyclictest19215-21chrt08:34:023
2847191570,4ptp4l0-21swapper/207:05:532
2847191570,4ptp4l0-21swapper/108:21:541
2847191570,3ptp4l0-21swapper/109:50:291
2847191570,3ptp4l0-21swapper/010:53:210
2847191570,16ptp4l0-21swapper/210:16:562
2847191570,16ptp4l0-21swapper/210:16:562
1202099576,16cyclictest0-21swapper/309:45:193
12020995713,14cyclictest31817-21chrt11:18:433
2847191560,4ptp4l0-21swapper/211:27:442
2847191560,4ptp4l0-21swapper/210:14:202
2847191560,4ptp4l0-21swapper/207:32:342
2847191560,4ptp4l0-21swapper/111:31:201
2847191560,4ptp4l0-21swapper/107:54:111
2847191560,4ptp4l0-21swapper/107:42:541
2847191560,4ptp4l0-21swapper/007:39:040
2847191560,3ptp4l0-21swapper/207:15:112
2847191560,3ptp4l0-21swapper/109:39:421
2847191560,3ptp4l0-21swapper/109:39:421
2847191560,2ptp4l121rcu_preempt07:07:020
12020995612,14cyclictest27352-21taskset12:16:563
1201799564,10cyclictest2847191ptp4l10:20:240
1201799562,11cyclictest0-21swapper/009:55:000
2847191550,4ptp4l0-21swapper/112:29:261
2847191550,4ptp4l0-21swapper/112:22:391
2847191550,4ptp4l0-21swapper/110:32:281
2847191550,4ptp4l0-21swapper/109:57:581
2847191550,4ptp4l0-21swapper/009:56:060
2847191550,3ptp4l0-21swapper/108:15:361
1201799553,14cyclictest1293-21snmpd09:14:020
1201799551,18cyclictest0-21swapper/010:15:320
1201799551,18cyclictest0-21swapper/010:15:320
2847191540,4ptp4l0-21swapper/211:44:592
2847191540,4ptp4l0-21swapper/109:24:591
2847191530,4ptp4l0-21swapper/108:55:531
2847191530,4ptp4l0-21swapper/107:06:421
2847191530,3ptp4l0-21swapper/111:55:101
1201799535,11cyclictest24270-21cat08:45:160
1201799534,17cyclictest29005-21df08:55:160
2847191520,6ptp4l0-21swapper/208:43:422
2847191520,6ptp4l0-21swapper/110:44:511
2847191520,5ptp4l0-21swapper/208:09:282
2847191520,5ptp4l0-21swapper/208:09:282
2847191520,4ptp4l0-21swapper/211:10:132
2847191520,4ptp4l0-21swapper/112:12:441
1202099529,14cyclictest1293-21snmpd07:57:563
1201799526,9cyclictest4289-21sed08:00:300
1201799523,8cyclictest3637-21phc2sys-jitter12:35:260
2847191510,4ptp4l0-21swapper/208:45:522
2847191510,4ptp4l0-21swapper/108:35:461
2847191510,4ptp4l0-21swapper/108:35:461
2847191510,3ptp4l0-21swapper/207:37:342
1201799515,16cyclictest16973-21taskset09:36:110
1201799515,16cyclictest16973-21taskset09:36:110
1201799514,15cyclictest27434-21df10:00:200
1201799511,10cyclictest0-21swapper/010:55:210
2847191500,4ptp4l0-21swapper/108:29:171
2847191500,3ptp4l0-21swapper/211:17:412
2847191500,3ptp4l0-21swapper/107:12:531
1202099509,14cyclictest1293-21snmpd08:58:573
1201799503,10cyclictest12530-21cpuspeed_turbos08:20:180
1201799501,14cyclictest1293-21snmpd07:32:500
1201799501,13cyclictest1293-21snmpd09:23:110
2847191490,4ptp4l0-21swapper/208:12:382
2847191490,4ptp4l0-21swapper/108:13:091
2847191490,3ptp4l0-21swapper/210:36:452
2847191490,3ptp4l0-21swapper/208:25:282
1202099499,7cyclictest6701-21apt-get10:25:183
12020994911,8cyclictest10881-21irqstats08:15:243
2847191480,5ptp4l32485-21apt-get12:30:141
2847191480,4ptp4l0-21swapper/107:23:201
2847191480,3ptp4l0-21swapper/208:20:202
2847191480,12ptp4l0-21swapper/212:25:282
1202099485,11cyclictest15328-21cat09:35:173
1202099485,11cyclictest15328-21cat09:35:173
12020994814,31cyclictest32446-21taskset07:52:173
12020994810,9cyclictest20268-21chrt10:53:513
1201799483,18cyclictest18243-21cat08:30:230
1201799482,15cyclictest0-21swapper/008:40:170
1201799481,16cyclictest30856-21awk10:05:280
2847191470,4ptp4l0-21swapper/111:40:051
1202099477,10cyclictest2847191ptp4l09:10:323
12020994711,7cyclictest24249-21iostat_ios07:35:213
1201799479,16cyclictest6359-21runrttasks11:33:040
1201799476,7cyclictest1778-21gnome-shell10:33:590
1201799475,15cyclictest16072-21/usr/sbin/munin08:25:270
1201799474,18cyclictest32280-21sed12:30:000
1201799474,15cyclictest19353-21ls12:00:230
1201799473,9cyclictest0-21swapper/007:40:200
2847191460,4ptp4l0-21swapper/211:48:482
2847191460,4ptp4l0-21swapper/208:02:462
2847191460,2ptp4l391rcuc/311:45:003
1202099467,37cyclictest0-21swapper/312:35:183
1201799467,8cyclictest1778-21gnome-shell09:25:590
1201799466,7cyclictest1778-21gnome-shell11:00:590
1201799466,6cyclictest13994-21df_abs11:50:200
1201799465,7cyclictest1778-21gnome-shell11:38:590
1201799463,11cyclictest0-21swapper/010:43:240
2847191450,9ptp4l0-21swapper/209:42:182
2847191450,4ptp4l0-21swapper/111:50:081
2847191450,4ptp4l0-21swapper/110:51:021
2847191450,3ptp4l0-21swapper/208:19:262
2847191450,11ptp4l0-21swapper/211:35:192
12020994511,30cyclictest2387-21taskset10:15:193
12020994511,30cyclictest2387-21taskset10:15:193
1201799456,7cyclictest1778-21gnome-shell07:24:580
1201799452,17cyclictest1304-21df_abs09:05:180
1201799452,17cyclictest1304-21df_abs09:05:180
1201799451,9cyclictest28551-21df_abs07:45:170
12017994510,8cyclictest2847191ptp4l07:10:240
1201799450,11cyclictest22342-21sed12:05:290
2847191440,9ptp4l0-21swapper/209:32:462
2847191440,9ptp4l0-21swapper/209:01:562
2847191440,9ptp4l0-21swapper/208:56:042
2847191440,9ptp4l0-21swapper/112:03:531
2847191440,8ptp4l0-21swapper/207:22:352
2847191440,5ptp4l19045-21apt-get07:25:140
2847191440,4ptp4l28449-21iostat_ios12:20:220
2847191440,4ptp4l25988-21apt-get07:40:143
1202099449,12cyclictest0-21swapper/308:50:383
1202099448,33cyclictest5314-21apt-config08:05:013
1202099448,33cyclictest5314-21apt-config08:05:013
1202099446,6cyclictest2849491getstats11:55:263
1202099446,5cyclictest0-21swapper/307:48:243
12020994410,6cyclictest24667-21/usr/sbin/munin09:55:313
1201799448,6cyclictest17685-21users10:45:320
1201799445,7cyclictest1778-21gnome-shell09:31:590
1201799443,15cyclictest31109-21/usr/sbin/munin09:00:310
1201799443,14cyclictest12423-21ntp_kernel_pll_10:35:260
2847191430,9ptp4l0-21swapper/212:18:512
2847191430,9ptp4l0-21swapper/211:56:242
2847191430,9ptp4l0-21swapper/210:58:102
2847191430,9ptp4l0-21swapper/210:03:122
2847191430,9ptp4l0-21swapper/209:52:112
2847191430,8ptp4l0-21swapper/210:50:432
2847191430,8ptp4l0-21swapper/210:24:162
2847191430,5ptp4l0-21swapper/307:05:223
2847191430,5ptp4l0-21swapper/207:40:262
2847191430,5ptp4l0-21swapper/112:05:261
2847191430,4ptp4l28299-21apt-get07:45:151
2847191430,4ptp4l25861-21users08:45:311
2847191430,4ptp4l20984-21ntp_states09:45:270
2847191430,4ptp4l11496-21ls09:25:232
2847191430,4ptp4l0-21swapper/211:30:182
2847191430,4ptp4l0-21swapper/111:36:141
2847191430,4ptp4l0-21swapper/110:11:451
1202099436,5cyclictest0-21swapper/311:05:183
12020994312,9cyclictest29434-21taskset11:12:453
12020994310,7cyclictest14209-21hddtemp_smartct11:50:223
12020994310,12cyclictest11994-21ssh09:25:313
1202099430,9cyclictest0-21swapper/311:00:183
1201799438,6cyclictest0-21swapper/012:30:170
1201799436,7cyclictest17550-21apt-get09:40:160
2847191420,9ptp4l0-21swapper/108:01:261
2847191420,8ptp4l0-21swapper/207:27:262
2847191420,5ptp4l0-21swapper/308:40:203
2847191420,4ptp4l19763-21df08:35:200
2847191420,4ptp4l19763-21df08:35:200
2847191420,4ptp4l0-21swapper/307:15:143
2847191420,4ptp4l0-21swapper/212:09:012
2847191420,4ptp4l0-21swapper/210:45:122
2847191420,4ptp4l0-21swapper/112:16:321
2847191420,4ptp4l0-21swapper/110:35:221
2847191420,4ptp4l0-21swapper/107:19:231
2847191420,4ptp4l0-21swapper/007:52:380
2847191420,3ptp4l2766-21diskstats12:35:181
2847191420,3ptp4l21873-21apt-get08:40:141
2847191420,3ptp4l0-21swapper/311:23:263
2847191420,3ptp4l0-21swapper/111:49:421
1202099429,10cyclictest0-21swapper/310:45:153
12020994213,26cyclictest20400-21/usr/sbin/munin07:25:273
12020994213,17cyclictest32064-21taskset12:27:543
12020994213,11cyclictest12758-21taskset10:35:313
12020994211,7cyclictest17329-21iostat_ios07:20:223
12019994230,11cyclictest33-21ksoftirqd/209:50:012
1201799427,6cyclictest0-21swapper/010:12:240
2847191410,5ptp4l0-21swapper/310:05:263
2847191410,5ptp4l0-21swapper/108:50:141
2847191410,5ptp4l0-21swapper/107:25:241
2847191410,4ptp4l0-21swapper/307:30:203
2847191410,4ptp4l0-21swapper/212:22:282
2847191410,4ptp4l0-21swapper/212:01:342
2847191410,4ptp4l0-21swapper/211:04:522
2847191410,4ptp4l0-21swapper/210:27:142
2847191410,4ptp4l0-21swapper/209:37:182
2847191410,4ptp4l0-21swapper/209:37:182
2847191410,4ptp4l0-21swapper/209:23:412
2847191410,4ptp4l0-21swapper/209:15:112
2847191410,4ptp4l0-21swapper/208:35:302
2847191410,4ptp4l0-21swapper/208:35:302
2847191410,4ptp4l0-21swapper/207:50:262
2847191410,4ptp4l0-21swapper/109:45:281
2847191410,4ptp4l0-21swapper/109:10:261
2847191410,4ptp4l0-21swapper/107:35:281
2847191410,4ptp4l0-21swapper/011:44:390
2847191410,4ptp4l0-21swapper/011:14:330
2847191410,4ptp4l0-21swapper/008:10:240
2847191410,3ptp4l6909-21df10:25:190
2847191410,3ptp4l4391-21apt-get10:20:141
2847191410,3ptp4l2376-21diskstats10:15:181
2847191410,3ptp4l2376-21diskstats10:15:171
2847191410,3ptp4l1909-21python07:55:261
2847191410,3ptp4l1612-21iostat_ios09:05:221
2847191410,3ptp4l1612-21iostat_ios09:05:221
2847191410,3ptp4l0-21swapper/111:21:401
1201799418,6cyclictest0-21swapper/012:10:250
1201799416,7cyclictest16392-21diskstats11:55:160
1201799416,6cyclictest2478-21diskstats11:25:190
1201799414,8cyclictest1293-21snmpd07:58:180
2847191400,5ptp4l0-21swapper/307:10:223
2847191400,4ptp4l0-21swapper/311:40:103
2847191400,4ptp4l0-21swapper/311:28:013
2847191400,4ptp4l0-21swapper/310:57:153
2847191400,4ptp4l0-21swapper/310:42:083
2847191400,4ptp4l0-21swapper/310:30:593
2847191400,4ptp4l0-21swapper/310:20:063
2847191400,4ptp4l0-21swapper/310:14:373
2847191400,4ptp4l0-21swapper/309:52:123
2847191400,4ptp4l0-21swapper/309:44:233
2847191400,4ptp4l0-21swapper/308:37:183
2847191400,4ptp4l0-21swapper/308:37:183
2847191400,4ptp4l0-21swapper/308:03:523
2847191400,4ptp4l0-21swapper/212:35:242
2847191400,4ptp4l0-21swapper/212:31:512
2847191400,4ptp4l0-21swapper/211:20:472
2847191400,4ptp4l0-21swapper/210:31:132
2847191400,4ptp4l0-21swapper/209:05:572
2847191400,4ptp4l0-21swapper/209:05:572
2847191400,4ptp4l0-21swapper/208:51:122
2847191400,4ptp4l0-21swapper/208:30:462
2847191400,4ptp4l0-21swapper/111:25:221
2847191400,4ptp4l0-21swapper/111:09:191
2847191400,4ptp4l0-21swapper/110:25:321
2847191400,4ptp4l0-21swapper/109:34:261
2847191400,4ptp4l0-21swapper/109:25:561
2847191400,4ptp4l0-21swapper/107:30:141
2847191400,4ptp4l0-21swapper/012:16:040
2847191400,4ptp4l0-21swapper/008:15:310
2847191400,4ptp4l0-21swapper/008:09:560
2847191400,4ptp4l0-21swapper/008:09:560
2847191400,3ptp4l31565-21hddtemp_smartct09:00:201
2847191400,3ptp4l3147-21apt-get09:10:022
2847191400,3ptp4l0-21swapper/309:20:303
2847191400,3ptp4l0-21swapper/309:05:583
2847191400,3ptp4l0-21swapper/309:05:583
2847191400,3ptp4l0-21swapper/210:41:592
2847191400,2ptp4l14721-21ls11:50:262
1202099408,29cyclictest7892-21ntpq11:35:263
12020994011,14cyclictest22016-21nfs4_client12:05:263
12018994034,3cyclictest25-21ksoftirqd/111:00:011
1201799405,15cyclictest5900-21/usr/sbin/munin09:15:150
2847191390,5ptp4l0-21swapper/108:05:271
2847191390,5ptp4l0-21swapper/108:05:261
2847191390,4ptp4l0-21swapper/312:01:573
2847191390,4ptp4l0-21swapper/308:45:513
2847191390,4ptp4l0-21swapper/212:13:312
2847191390,4ptp4l0-21swapper/111:16:281
2847191390,4ptp4l0-21swapper/011:20:120
2847191390,3ptp4l0-21swapper/111:13:451
2847191390,3ptp4l0-21swapper/111:00:031
2847191390,3ptp4l0-21swapper/109:15:221
12020993912,7cyclictest7592-21users09:15:303
2847191380,3ptp4l0-21swapper/310:01:453
41798370,4rtkit-daemon0-21swapper/312:13:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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