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2026-03-19 - 06:46
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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 Mar 19, 2026 00:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
257952850,4sleep025798-21irqrtprio23:20:180
592699707,17cyclictest19668-21ntpq00:15:211
134491680,4ptp4l18674-21meminfo20:45:192
134491660,2ptp4l121rcu_preempt23:42:353
134491650,4ptp4l27271-21apt-get22:15:102
134491650,4ptp4l27271-21apt-get22:15:102
134491650,30ptp4l25-21ksoftirqd/119:05:221
71222640,4sleep30-21swapper/319:10:213
592699649,14cyclictest11944-21if_enp4s000:00:181
592599640,24cyclictest15089-21chrt00:05:220
592699619,15cyclictest15020-21chrt20:38:201
134491610,3ptp4l0-21swapper/222:41:462
592699609,15cyclictest5991-21timerandwakeup23:45:261
134491590,4ptp4l0-21swapper/323:53:423
134491590,4ptp4l0-21swapper/321:44:213
592599582,19cyclictest0-21swapper/021:20:120
134491580,4ptp4l0-21swapper/322:00:293
134491580,4ptp4l0-21swapper/222:13:152
134491580,3ptp4l0-21swapper/320:17:093
592599572,23cyclictest0-21swapper/019:14:000
134491570,5ptp4l0-21swapper/319:57:453
134491570,4ptp4l0-21swapper/321:57:273
134491570,4ptp4l0-21swapper/319:35:283
134491570,4ptp4l0-21swapper/319:35:283
134491570,4ptp4l0-21swapper/300:27:223
134491570,3ptp4l0-21swapper/223:43:202
134491570,15ptp4l0-21swapper/321:05:173
134491570,15ptp4l0-21swapper/321:05:173
134491560,4ptp4l0-21swapper/321:36:383
134491560,4ptp4l0-21swapper/220:21:522
134491560,4ptp4l0-21swapper/219:55:162
134491560,3ptp4l0-21swapper/221:58:222
134491560,3ptp4l0-21swapper/119:49:111
592599556,19cyclictest1317-21runrttasks23:42:370
134491550,5ptp4l0-21swapper/322:38:563
134491550,4ptp4l0-21swapper/322:13:583
134491550,4ptp4l0-21swapper/320:04:263
134491550,4ptp4l0-21swapper/222:23:582
134491550,3ptp4l0-21swapper/319:30:193
592599540,23cyclictest10285-21sed22:45:270
134491540,7ptp4l41-21ksoftirqd/319:25:193
134491540,4ptp4l0-21swapper/321:32:093
134491540,4ptp4l0-21swapper/221:13:402
134491540,3ptp4l0-21swapper/322:15:173
134491540,3ptp4l0-21swapper/322:15:173
134491540,3ptp4l0-21swapper/300:09:453
134491540,3ptp4l0-21swapper/223:36:212
134491540,3ptp4l0-21swapper/219:22:552
592699531,50cyclictest4929-21kworker/1:122:36:091
134491530,4ptp4l0-21swapper/320:47:593
134491530,4ptp4l0-21swapper/222:56:262
134491530,3ptp4l0-21swapper/319:43:413
134491530,3ptp4l0-21swapper/223:26:242
5926995210,15cyclictest7771-21chrt19:11:311
592599522,20cyclictest0-21swapper/023:18:340
134491520,4ptp4l0-21swapper/321:47:233
134491520,4ptp4l0-21swapper/320:35:593
134491520,4ptp4l0-21swapper/300:02:213
134491520,4ptp4l0-21swapper/221:39:152
134491520,3ptp4l0-21swapper/322:41:333
592699519,15cyclictest23499-21phc2sys-jitter20:55:241
592699518,11cyclictest24431-21taskset22:06:141
592699512,15cyclictest2664-21ntpq20:10:221
5926995110,10cyclictest31236-21taskset20:03:481
592599511,46cyclictest22096-21sshd19:44:360
134491510,4ptp4l0-21swapper/323:31:203
134491510,4ptp4l0-21swapper/321:51:103
134491510,4ptp4l0-21swapper/220:10:342
134491510,3ptp4l0-21swapper/222:36:142
592699506,9cyclictest18637-21iostat_ios21:55:171
592699504,11cyclictest17306-21grep00:10:201
5926995010,10cyclictest10760-21chrt22:49:301
1378915040,4phc2sys5614-21grep19:10:002
134491500,4ptp4l0-21swapper/320:27:013
134491490,4ptp4l0-21swapper/320:53:393
134491490,4ptp4l0-21swapper/222:05:132
592699483,42cyclictest11423-21cpuspeed_turbos22:50:131
134491480,8ptp4l3641-21df19:05:130
134491480,4ptp4l0-21swapper/323:25:123
117972480,3sleep111801-21irqrtprio21:40:181
592699476,17cyclictest20093-21apt-get19:40:111
592699474,11cyclictest32085-21cut23:35:001
134491470,4ptp4l0-21swapper/323:11:213
134491470,4ptp4l0-21swapper/223:52:252
134491470,3ptp4l0-21swapper/219:28:252
134491460,4ptp4l0-21swapper/319:15:183
134491460,3ptp4l401ktimersoftd/321:22:003
134491460,3ptp4l0-21swapper/322:20:233
134491460,3ptp4l0-21swapper/320:05:243
134491460,3ptp4l0-21swapper/320:05:243
134491460,3ptp4l0-21swapper/219:35:152
134491460,3ptp4l0-21swapper/219:35:152
592699454,9cyclictest0-21swapper/123:02:371
592699453,11cyclictest28307-21grep23:25:191
592699452,18cyclictest0-21swapper/121:50:241
592599451,28cyclictest26184-21grep22:10:240
134491450,5ptp4l0-21swapper/322:45:133
134491450,4ptp4l592599cyclictest00:20:380
134491450,4ptp4l0-21swapper/319:23:003
134491450,4ptp4l0-21swapper/200:18:512
134491450,3ptp4l0-21swapper/322:07:243
134491450,3ptp4l0-21swapper/300:13:183
134491450,3ptp4l0-21swapper/120:54:151
134491450,12ptp4l0-21swapper/200:24:012
134491450,10ptp4l0-21swapper/021:15:070
134491440,9ptp4l0-21swapper/023:27:470
134491440,4ptp4l18580-21apt-get00:15:123
134491440,4ptp4l13620-21apt-get22:55:120
134491440,4ptp4l0-21swapper/322:25:273
134491440,4ptp4l0-21swapper/320:33:253
134491440,4ptp4l0-21swapper/122:10:581
134491440,10ptp4l0-21swapper/221:31:332
134491440,10ptp4l0-21swapper/021:43:530
592899433,2cyclictest121rcu_preempt20:42:282
592699435,9cyclictest0-21swapper/122:56:111
134491430,9ptp4l0-21swapper/219:18:512
134491430,8ptp4l0-21swapper/019:45:120
134491430,5ptp4l30251-21diskstats23:30:150
134491430,5ptp4l0-21swapper/323:55:123
134491430,5ptp4l0-21swapper/323:05:153
134491430,5ptp4l0-21swapper/119:35:171
134491430,5ptp4l0-21swapper/119:35:171
134491430,5ptp4l0-21swapper/119:15:121
134491430,4ptp4l6188-21users23:45:272
134491430,4ptp4l4511-21df_inode21:25:123
134491430,4ptp4l31583-21apt-get20:05:100
134491430,4ptp4l31583-21apt-get20:05:100
134491430,4ptp4l29119-21ntp_states00:35:243
134491430,4ptp4l0-21swapper/323:01:283
134491430,4ptp4l0-21swapper/300:22:163
134491430,4ptp4l0-21swapper/223:20:112
134491430,4ptp4l0-21swapper/221:19:412
134491430,3ptp4l8762-21apt-get22:45:122
134491430,3ptp4l0-21swapper/321:14:513
134491430,10ptp4l0-21swapper/219:47:222
592899425,3cyclictest11602-21irqstats20:30:162
5928994237,3cyclictest33-21ksoftirqd/221:00:002
592699428,6cyclictest0-21swapper/121:25:241
592599420,22cyclictest18600-21latency20:45:180
134491420,9ptp4l0-21swapper/322:59:053
134491420,6ptp4l6375-21sshd20:20:133
134491420,6ptp4l0-21swapper/319:50:133
134491420,5ptp4l0-21swapper/222:30:252
134491420,5ptp4l0-21swapper/022:30:140
134491420,5ptp4l0-21swapper/021:50:150
134491420,5ptp4l0-21swapper/019:35:210
134491420,5ptp4l0-21swapper/019:35:210
134491420,4ptp4l32543-21df_inode23:35:160
134491420,4ptp4l25141-21apt-get23:20:123
134491420,4ptp4l22052-21users22:00:271
134491420,4ptp4l0-21swapper/322:52:433
134491420,4ptp4l0-21swapper/300:30:183
134491420,4ptp4l0-21swapper/219:14:052
134491420,4ptp4l0-21swapper/022:25:140
134491420,4ptp4l0-21swapper/022:20:280
134491420,4ptp4l0-21swapper/021:55:170
134491420,4ptp4l0-21swapper/020:50:230
134491420,3ptp4l8457-21apt-get20:25:112
134491420,3ptp4l3836-21apt-get20:15:112
134491420,3ptp4l29942-21apt-get23:30:122
134491420,3ptp4l25915-21df00:30:130
134491420,3ptp4l25703-21apt-get00:30:122
134491420,3ptp4l24681-21apt-get19:50:122
134491420,3ptp4l15482-21apt-get19:30:110
134491420,3ptp4l152532chrt21:46:321
134491420,3ptp4l12823-21ls22:50:250
134491420,3ptp4l0-21swapper/200:29:462
592699419,11cyclictest31516-21chrt22:23:311
134491410,5ptp4l32623-21grep23:35:163
134491410,5ptp4l0-21swapper/321:04:293
134491410,5ptp4l0-21swapper/122:15:211
134491410,5ptp4l0-21swapper/122:15:211
134491410,5ptp4l0-21swapper/120:40:191
134491410,5ptp4l0-21swapper/021:25:140
134491410,5ptp4l0-21swapper/020:10:240
134491410,5ptp4l0-21swapper/020:03:090
134491410,5ptp4l0-21swapper/000:25:150
134491410,4ptp4l31889-21apt-get22:25:122
134491410,4ptp4l26128-21ls21:00:270
134491410,4ptp4l0-21swapper/320:56:003
134491410,4ptp4l0-21swapper/320:40:093
134491410,4ptp4l0-21swapper/221:29:432
134491410,4ptp4l0-21swapper/221:05:262
134491410,4ptp4l0-21swapper/221:05:262
134491410,4ptp4l0-21swapper/123:50:111
134491410,4ptp4l0-21swapper/122:40:131
134491410,4ptp4l0-21swapper/120:05:251
134491410,4ptp4l0-21swapper/120:05:251
134491410,4ptp4l0-21swapper/021:35:270
134491410,4ptp4l0-21swapper/021:34:550
134491410,4ptp4l0-21swapper/021:08:580
134491410,4ptp4l0-21swapper/021:08:580
134491410,4ptp4l0-21swapper/020:25:250
134491410,4ptp4l0-21swapper/020:19:000
134491410,4ptp4l0-21swapper/019:15:220
134491410,3ptp4l3113-21ls20:10:273
134491410,3ptp4l27543-21iostat19:55:171
5928994035,3cyclictest33-21ksoftirqd/221:20:252
5928994029,9cyclictest33-21ksoftirqd/220:05:142
5928994029,9cyclictest33-21ksoftirqd/220:05:142
592699406,12cyclictest0-21swapper/122:25:171
134491400,5ptp4l26575-21timerandwakeup23:20:261
134491400,5ptp4l0-21swapper/323:16:523
134491400,5ptp4l0-21swapper/121:23:041
134491400,5ptp4l0-21swapper/120:21:511
134491400,5ptp4l0-21swapper/023:14:390
134491400,5ptp4l0-21swapper/022:40:090
134491400,5ptp4l0-21swapper/021:46:310
134491400,5ptp4l0-21swapper/021:11:250
134491400,5ptp4l0-21swapper/019:50:250
134491400,5ptp4l0-21swapper/019:22:010
134491400,5ptp4l0-21swapper/000:00:170
134491400,4ptp4l752-21memory23:35:211
134491400,4ptp4l29018-21ls00:35:221
134491400,4ptp4l24108-21/usr/sbin/munin22:05:260
134491400,4ptp4l23059-21sed23:15:132
134491400,4ptp4l18285-21awk23:05:130
134491400,4ptp4l0-21swapper/323:49:043
134491400,4ptp4l0-21swapper/322:30:163
134491400,4ptp4l0-21swapper/223:05:192
134491400,4ptp4l0-21swapper/223:00:232
134491400,4ptp4l0-21swapper/222:04:322
134491400,4ptp4l0-21swapper/221:52:572
134491400,4ptp4l0-21swapper/221:43:232
134491400,4ptp4l0-21swapper/219:32:302
134491400,4ptp4l0-21swapper/200:11:172
134491400,4ptp4l0-21swapper/200:06:022
134491400,4ptp4l0-21swapper/120:45:201
134491400,4ptp4l0-21swapper/023:54:510
134491400,4ptp4l0-21swapper/023:45:580
134491400,4ptp4l0-21swapper/022:35:230
134491400,4ptp4l0-21swapper/022:17:140
134491400,4ptp4l0-21swapper/022:17:140
134491400,4ptp4l0-21swapper/020:56:270
134491400,4ptp4l0-21swapper/020:42:570
134491400,4ptp4l0-21swapper/020:35:310
134491400,4ptp4l0-21swapper/020:24:120
134491400,4ptp4l0-21swapper/019:57:310
134491400,4ptp4l0-21swapper/000:35:190
134491400,4ptp4l0-21swapper/000:10:170
134491400,3ptp4l23505-21ntp_states19:45:233
134491400,3ptp4l18442-21df23:05:141
134491400,3ptp4l13480-21apt-get21:45:122
134491400,3ptp4l11177-21apt-config22:50:012
134491400,3ptp4l0-21swapper/121:31:471
134491400,3ptp4l0-21swapper/022:01:230
134491390,6ptp4l0-21swapper/219:40:212
134491390,5ptp4l25-21ksoftirqd/121:05:011
134491390,5ptp4l25-21ksoftirqd/121:05:011
134491390,5ptp4l0-21swapper/121:36:481
134491390,5ptp4l0-21swapper/119:29:041
134491390,4ptp4l2197-21fschecks_time22:30:151
134491390,4ptp4l12976-21apt19:25:110
134491390,4ptp4l0-21swapper/321:17:333
134491390,4ptp4l0-21swapper/223:55:202
134491390,4ptp4l0-21swapper/223:10:012
134491390,4ptp4l0-21swapper/220:50:232
134491390,4ptp4l0-21swapper/220:35:272
134491390,4ptp4l0-21swapper/220:01:122
134491390,4ptp4l0-21swapper/200:39:072
134491390,4ptp4l0-21swapper/200:00:282
134491390,4ptp4l0-21swapper/123:40:111
134491390,4ptp4l0-21swapper/123:17:141
134491390,4ptp4l0-21swapper/121:10:251
134491390,4ptp4l0-21swapper/120:25:281
134491390,4ptp4l0-21swapper/119:50:301
134491390,4ptp4l0-21swapper/119:30:031
134491390,4ptp4l0-21swapper/119:22:381
134491390,4ptp4l0-21swapper/100:20:061
134491390,4ptp4l0-21swapper/100:05:361
134491390,4ptp4l0-21swapper/023:58:490
134491390,4ptp4l0-21swapper/020:31:520
134491390,4ptp4l0-21swapper/000:15:410
134491390,3ptp4l16243-21diskstats23:00:150
134491390,3ptp4l0-21swapper/121:00:581
134491390,2ptp4l2318-21gnome-shell21:04:592
134491380,4ptp4l0-21swapper/123:59:211
134491380,4ptp4l0-21swapper/120:32:341
134491380,4ptp4l0-21swapper/120:15:051
134491380,3ptp4l0-21swapper/123:12:591
134491380,3ptp4l0-21swapper/121:17:461
134491380,3ptp4l0-21swapper/100:30:351
134491380,3ptp4l0-21swapper/100:26:211
51452201,4sleep30-21swapper/319:05:523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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