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2026-04-19 - 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 highest latencies:
System rackdslot1.osadl.org (updated Sun Apr 19, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2340221690,6sleep32309899cyclictest11:50:003
1101721660,5sleep02309599cyclictest09:00:280
3109321410,7sleep32309899cyclictest10:55:163
3097521220,5sleep22309799cyclictest07:25:182
81752710,7sleep02309599cyclictest12:25:180
134491640,4ptp4l9157-21sshd12:26:571
2309599613,15cyclictest0-21swapper/007:35:000
2309599604,15cyclictest18566-21latency_hist10:30:000
134491600,19ptp4l0-21swapper/310:45:143
2309599591,15cyclictest25551-21/usr/sbin/munin09:35:250
134491590,5ptp4l0-21swapper/110:06:511
134491590,4ptp4l0-21swapper/208:14:392
2309599587,10cyclictest13067-21tail10:15:240
2309599585,15cyclictest0-21swapper/007:40:140
2309599582,10cyclictest13737-21latency_hist08:00:000
134491580,3ptp4l0-21swapper/209:49:562
134491580,3ptp4l0-21swapper/208:02:112
134491580,3ptp4l0-21swapper/207:50:042
2309599576,11cyclictest0-21swapper/011:00:190
2309599576,11cyclictest0-21swapper/011:00:190
2309599573,15cyclictest0-21swapper/011:15:270
2309599572,10cyclictest19229-21fschecks_time10:30:170
2309599572,10cyclictest0-21swapper/012:24:590
134491570,4ptp4l0-21swapper/312:25:283
134491570,15ptp4l0-21swapper/210:20:122
2309599567,6cyclictest0-21swapper/007:35:230
134491560,3ptp4l0-21swapper/310:42:563
2309599547,16cyclictest26780-21sed11:55:200
2309599541,11cyclictest16190-21date09:15:010
2309599537,6cyclictest0-21swapper/008:50:160
2309599536,7cyclictest29131-21ls12:00:210
2309599532,11cyclictest7298-21cut07:45:160
134491530,4ptp4l0-21swapper/208:29:422
134491530,4ptp4l0-21swapper/108:12:241
134491530,2ptp4l0-21swapper/309:15:073
134491530,10ptp4l0-21swapper/211:44:002
2309599528,6cyclictest0-21swapper/008:15:130
2309599523,8cyclictest2147-21latency_hist08:45:010
2309599523,11cyclictest25837-21grep07:15:150
2309599521,8cyclictest2733-21/usr/sbin/munin12:15:240
2309599521,15cyclictest28807-21sed09:40:190
134491520,4ptp4l0-21swapper/010:40:290
134491520,11ptp4l0-21swapper/209:33:392
2309599514,9cyclictest4166-21switchtime11:05:270
134491510,5ptp4l33-21ksoftirqd/211:23:092
134491510,4ptp4l0-21swapper/110:48:071
134491510,4ptp4l0-21swapper/109:28:001
134491510,4ptp4l0-21swapper/007:05:540
134491510,3ptp4l0-21swapper/107:52:061
2309599508,6cyclictest0-21swapper/007:10:130
2309599504,10cyclictest25902-21expr10:45:140
2309599502,11cyclictest14403-21expr10:20:140
2309599501,10cyclictest9460-21df_abs07:50:140
134491500,5ptp4l0-21swapper/312:32:323
134491500,3ptp4l0-21swapper/208:50:562
134491500,3ptp4l0-21swapper/112:07:491
134491500,11ptp4l0-21swapper/211:57:512
2309599498,8cyclictest0-21swapper/012:05:250
2309599492,8cyclictest0-21swapper/008:05:130
134491490,4ptp4l0-21swapper/211:47:552
134491490,4ptp4l0-21swapper/108:59:591
134491490,4ptp4l0-21swapper/107:58:161
134491490,11ptp4l22556-21sshd07:06:551
134491490,11ptp4l0-21swapper/211:50:422
2309599488,6cyclictest0-21swapper/008:10:270
134491480,4ptp4l0-21swapper/210:30:252
134491480,4ptp4l0-21swapper/010:11:070
134491480,3ptp4l0-21swapper/210:13:382
134491480,11ptp4l0-21swapper/108:43:311
2309599477,6cyclictest0-21swapper/008:55:170
134691470,10getstats0-21swapper/110:59:001
134491470,4ptp4l0-21swapper/211:15:222
134491470,4ptp4l0-21swapper/210:25:192
134491470,4ptp4l0-21swapper/209:19:472
134491470,3ptp4l0-21swapper/107:34:301
2309599464,6cyclictest0-21swapper/008:30:270
2309599460,10cyclictest0-21swapper/008:00:130
134491460,4ptp4l0-21swapper/107:19:101
134491460,10ptp4l0-21swapper/011:42:430
2309599457,5cyclictest134691getstats12:10:120
2309599453,6cyclictest134691getstats09:30:140
2309599450,11cyclictest0-21swapper/008:45:200
134491450,9ptp4l0-21swapper/210:05:462
134491450,12ptp4l0-21swapper/207:10:202
134491450,10ptp4l0-21swapper/208:20:442
134491440,9ptp4l0-21swapper/207:19:292
134491440,9ptp4l0-21swapper/008:21:320
134491440,6ptp4l0-21swapper/309:25:293
134491440,4ptp4l392-21apt-get11:00:122
134491440,4ptp4l392-21apt-get11:00:122
134491440,3ptp4l0-21swapper/108:33:431
134491440,11ptp4l0-21swapper/207:55:152
134491430,9ptp4l0-21swapper/212:00:032
134491430,8ptp4l0-21swapper/209:57:262
134491430,3ptp4l6901-21apt-get07:45:122
134491430,3ptp4l5677-21iostat_ios11:10:180
134491430,10ptp4l0-21swapper/211:09:332
134491430,10ptp4l0-21swapper/109:15:421
23098994231,8cyclictest134491ptp4l09:55:123
2309699427,9cyclictest25-21ksoftirqd/108:00:191
23096994238,3cyclictest25-21ksoftirqd/108:30:001
23096994237,3cyclictest25-21ksoftirqd/110:25:001
2309599420,17cyclictest0-21swapper/010:05:120
134491420,9ptp4l0-21swapper/011:53:520
134491420,6ptp4l41-21ksoftirqd/307:40:003
134491420,6ptp4l0-21swapper/311:26:433
134491420,4ptp4l9725-21apt-get11:20:133
134491420,4ptp4l17282-21ntp_states08:05:251
134491420,4ptp4l15214-21irqstats11:30:200
134491420,4ptp4l14442-21hddtemp_smartct09:10:151
134491420,3ptp4l18983-21apt-get11:40:121
134491420,3ptp4l0-21swapper/210:16:202
23097994130,10cyclictest33-21ksoftirqd/208:35:282
2309699417,4cyclictest25-21ksoftirqd/111:20:001
2309599413,10cyclictest5019-21df_abs10:00:120
134691410,10getstats0-21swapper/110:01:031
134491410,9ptp4l0-21swapper/210:51:152
134491410,9ptp4l0-21swapper/208:42:292
134491410,5ptp4l10479-21ntpq09:00:231
134491410,5ptp4l0-21swapper/112:00:191
134491410,5ptp4l0-21swapper/111:30:151
134491410,5ptp4l0-21swapper/107:45:261
134491410,5ptp4l0-21swapper/011:20:160
134491410,4ptp4l30177-21apt-get09:45:131
134491410,4ptp4l24548-21/usr/sbin/munin07:10:251
134491410,4ptp4l21353-21hddtemp_smartct09:25:170
134491410,4ptp4l17326-21ls09:15:210
134491410,4ptp4l13187-21ntp_states11:25:230
134491410,4ptp4l0-21swapper/311:08:413
134491410,4ptp4l0-21swapper/311:00:213
134491410,4ptp4l0-21swapper/311:00:213
134491410,4ptp4l0-21swapper/310:10:193
134491410,4ptp4l0-21swapper/210:47:082
134491410,4ptp4l0-21swapper/209:12:452
134491410,4ptp4l0-21swapper/208:49:592
134491410,4ptp4l0-21swapper/208:33:592
134491410,4ptp4l0-21swapper/112:39:061
134491410,4ptp4l0-21swapper/111:22:451
134491410,4ptp4l0-21swapper/109:41:201
134491410,4ptp4l0-21swapper/108:45:191
134491410,4ptp4l0-21swapper/107:20:151
134491410,3ptp4l27779-21apt-get10:50:020
134491410,3ptp4l2318-21gnome-shell07:40:581
134491410,3ptp4l2238-21apt-get07:35:121
134491410,3ptp4l0-21swapper/309:35:483
134491410,3ptp4l0-21swapper/309:30:533
134491410,3ptp4l0-21swapper/209:07:372
23096994035,3cyclictest25-21ksoftirqd/110:15:141
23096994034,3cyclictest25-21ksoftirqd/108:40:001
134491400,6ptp4l556-21cron09:56:000
134491400,5ptp4l0-21swapper/110:50:141
134491400,5ptp4l0-21swapper/110:30:191
134491400,5ptp4l0-21swapper/009:20:150
134491400,4ptp4l6179-21ntp_states12:20:232
134491400,4ptp4l32267-21/usr/sbin/munin08:40:193
134491400,4ptp4l24545-21timerandwakeup08:20:271
134491400,4ptp4l13015-21ntp_states10:15:233
134491400,4ptp4l0-21swapper/312:00:243
134491400,4ptp4l0-21swapper/311:30:253
134491400,4ptp4l0-21swapper/309:41:033
134491400,4ptp4l0-21swapper/309:10:173
134491400,4ptp4l0-21swapper/309:05:203
134491400,4ptp4l0-21swapper/308:45:313
134491400,4ptp4l0-21swapper/211:35:142
134491400,4ptp4l0-21swapper/211:25:492
134491400,4ptp4l0-21swapper/210:42:022
134491400,4ptp4l0-21swapper/209:53:312
134491400,4ptp4l0-21swapper/209:41:222
134491400,4ptp4l0-21swapper/209:25:522
134491400,4ptp4l0-21swapper/209:22:302
134491400,4ptp4l0-21swapper/208:07:592
134491400,4ptp4l0-21swapper/207:43:132
134491400,4ptp4l0-21swapper/207:35:572
134491400,4ptp4l0-21swapper/207:21:172
134491400,4ptp4l0-21swapper/112:24:201
134491400,4ptp4l0-21swapper/109:51:421
134491400,4ptp4l0-21swapper/109:35:221
134491400,4ptp4l0-21swapper/108:15:171
134491400,4ptp4l0-21swapper/012:37:020
134491400,4ptp4l0-21swapper/012:30:110
134491400,4ptp4l0-21swapper/011:35:200
134491400,4ptp4l0-21swapper/010:55:260
134491400,4ptp4l0-21swapper/009:05:220
134491400,4ptp4l0-21swapper/008:25:140
134491400,4ptp4l0-21swapper/007:25:260
134491400,3ptp4l6143-21awk12:20:233
134491400,3ptp4l4481-21users11:05:291
134491400,3ptp4l32469-21apt-get09:50:113
134491400,3ptp4l23576-21diskstats09:30:151
134491400,3ptp4l21109-21apt-get10:35:132
134491400,3ptp4l18813-21apt-get10:30:133
23096993935,3cyclictest25-21ksoftirqd/112:00:001
23096993934,3cyclictest25-21ksoftirqd/108:52:591
134491390,4ptp4l784-21hddtemp_smartct12:10:151
134491390,4ptp4l0-21swapper/312:15:323
134491390,4ptp4l0-21swapper/311:51:083
134491390,4ptp4l0-21swapper/311:43:403
134491390,4ptp4l0-21swapper/311:15:183
134491390,4ptp4l0-21swapper/310:35:213
134491390,4ptp4l0-21swapper/310:20:103
134491390,4ptp4l0-21swapper/310:05:143
134491390,4ptp4l0-21swapper/309:20:113
134491390,4ptp4l0-21swapper/308:51:153
134491390,4ptp4l0-21swapper/308:30:193
134491390,4ptp4l0-21swapper/308:13:163
134491390,4ptp4l0-21swapper/308:04:513
134491390,4ptp4l0-21swapper/307:54:583
134491390,4ptp4l0-21swapper/212:35:472
134491390,4ptp4l0-21swapper/212:29:272
134491390,4ptp4l0-21swapper/212:15:202
134491390,4ptp4l0-21swapper/212:07:542
134491390,4ptp4l0-21swapper/211:14:062
134491390,4ptp4l0-21swapper/210:00:552
134491390,4ptp4l0-21swapper/209:35:432
134491390,4ptp4l0-21swapper/209:00:252
134491390,4ptp4l0-21swapper/208:18:512
134491390,4ptp4l0-21swapper/207:31:012
134491390,4ptp4l0-21swapper/112:32:221
134491390,4ptp4l0-21swapper/112:15:111
134491390,4ptp4l0-21swapper/111:50:201
134491390,4ptp4l0-21swapper/111:36:381
134491390,4ptp4l0-21swapper/111:12:391
134491390,4ptp4l0-21swapper/110:35:271
134491390,4ptp4l0-21swapper/110:11:561
134491390,4ptp4l0-21swapper/109:05:251
134491390,4ptp4l0-21swapper/010:35:190
134491390,4ptp4l0-21swapper/009:53:580
134491390,4ptp4l0-21swapper/009:49:580
134491390,4ptp4l0-21swapper/008:36:250
134491390,3ptp4l28758-21ls07:20:200
134491390,3ptp4l21587-21diskstats11:45:150
134491390,3ptp4l0-21swapper/308:26:213
134491390,3ptp4l0-21swapper/212:10:302
134491390,3ptp4l0-21swapper/211:30:592
2309699385,4cyclictest25-21ksoftirqd/110:40:181
23096993833,3cyclictest25-21ksoftirqd/111:00:181
23096993833,3cyclictest25-21ksoftirqd/111:00:181
23096993833,3cyclictest25-21ksoftirqd/107:25:261
134491380,5ptp4l0-21swapper/311:35:163
134491380,5ptp4l0-21swapper/311:10:253
134491380,4ptp4l0-21swapper/312:35:343
134491380,4ptp4l0-21swapper/312:05:153
134491380,4ptp4l0-21swapper/311:57:403
134491380,4ptp4l0-21swapper/310:50:243
134491380,4ptp4l0-21swapper/310:27:453
134491380,4ptp4l0-21swapper/309:45:243
134491380,4ptp4l0-21swapper/308:20:173
134491380,4ptp4l0-21swapper/307:58:363
134491380,4ptp4l0-21swapper/307:40:143
134491380,4ptp4l0-21swapper/307:25:243
134491380,4ptp4l0-21swapper/307:20:103
134491380,4ptp4l0-21swapper/210:58:472
134491380,4ptp4l0-21swapper/111:47:161
134491380,4ptp4l0-21swapper/111:26:311
134491380,4ptp4l0-21swapper/109:55:411
134491380,4ptp4l0-21swapper/109:22:201
134491380,3ptp4l0-21swapper/310:00:113
134491380,3ptp4l0-21swapper/309:00:013
134491380,3ptp4l0-21swapper/307:34:063
134491380,3ptp4l0-21swapper/307:14:093
134491380,3ptp4l0-21swapper/212:30:272
134491380,3ptp4l0-21swapper/208:58:072
134491370,5ptp4l0-21swapper/307:16:303
134491370,4ptp4l0-21swapper/308:35:153
134491370,4ptp4l0-21swapper/308:16:463
134491370,3ptp4l0-21swapper/312:11:333
134491370,3ptp4l0-21swapper/308:09:293
23096993632,2cyclictest25-21ksoftirqd/110:25:201
134491360,3ptp4l0-21swapper/308:58:593
134491360,3ptp4l0-21swapper/307:45:403
46198280,5rtkit-daemon0-21swapper/307:05:343
137891214,9phc2sys20760-21apt-get07:05:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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