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2026-01-10 - 03:28
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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 Sat Jan 10, 2026 00:45:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
856998142,3cyclictest33-21ksoftirqd/200:00:152
856996629,6cyclictest33-21ksoftirqd/219:55:152
856996531,11cyclictest33-21ksoftirqd/220:30:532
856996429,4cyclictest33-21ksoftirqd/221:35:262
856996330,9cyclictest33-21ksoftirqd/222:35:272
854996310,9cyclictest3051-21tail22:40:260
134491630,4ptp4l19996-21df_inode19:50:151
856996130,3cyclictest33-21ksoftirqd/221:35:012
856996129,5cyclictest33-21ksoftirqd/220:15:262
856996127,7cyclictest33-21ksoftirqd/220:00:252
856996127,5cyclictest33-21ksoftirqd/221:45:252
856996033,7cyclictest33-21ksoftirqd/222:20:292
856996033,6cyclictest33-21ksoftirqd/223:00:272
856996031,4cyclictest33-21ksoftirqd/219:50:262
856996030,8cyclictest33-21ksoftirqd/223:51:152
856996030,6cyclictest33-21ksoftirqd/221:25:222
856996030,4cyclictest33-21ksoftirqd/221:15:132
856996028,6cyclictest33-21ksoftirqd/200:20:132
856996026,6cyclictest33-21ksoftirqd/219:25:012
856996025,8cyclictest33-21ksoftirqd/221:55:002
856996025,6cyclictest33-21ksoftirqd/219:30:302
856996024,4cyclictest33-21ksoftirqd/222:40:262
856995931,3cyclictest33-21ksoftirqd/221:20:222
856995930,3cyclictest33-21ksoftirqd/220:35:202
856995929,5cyclictest33-21ksoftirqd/223:25:152
856995928,6cyclictest33-21ksoftirqd/222:55:002
856995927,4cyclictest33-21ksoftirqd/221:00:202
856995926,6cyclictest33-21ksoftirqd/220:50:252
856995921,4cyclictest33-21ksoftirqd/200:15:122
85499598,9cyclictest13138-21grep20:45:160
134491590,3ptp4l0-21swapper/220:20:192
856995830,3cyclictest33-21ksoftirqd/219:45:242
856995820,7cyclictest33-21ksoftirqd/221:05:152
85499587,6cyclictest0-21swapper/021:40:120
85499586,6cyclictest0-21swapper/019:40:210
85499585,10cyclictest30515-21sed20:10:260
134491580,4ptp4l24777-21idleruntime20:00:171
134491580,4ptp4l0-21swapper/322:30:283
134491580,4ptp4l0-21swapper/221:55:212
856995729,7cyclictest33-21ksoftirqd/222:30:252
856995723,7cyclictest33-21ksoftirqd/223:40:182
856995722,5cyclictest33-21ksoftirqd/223:32:022
856995722,4cyclictest33-21ksoftirqd/200:25:212
85699572,24cyclictest0-21swapper/222:58:402
85499576,7cyclictest15027-21latency_hist22:00:000
85499572,10cyclictest23305-21df_abs00:35:130
85499572,10cyclictest0-21swapper/000:15:010
134491570,3ptp4l0-21swapper/121:44:101
856995634,4cyclictest33-21ksoftirqd/219:25:002
856995627,9cyclictest33-21ksoftirqd/220:30:002
856995627,3cyclictest33-21ksoftirqd/220:49:312
856995626,5cyclictest33-21ksoftirqd/220:05:222
856995624,5cyclictest33-21ksoftirqd/222:25:242
85499568,7cyclictest0-21swapper/020:25:140
85499566,9cyclictest24278-21chrt20:00:000
85499565,12cyclictest0-21swapper/023:15:240
85499563,9cyclictest448-21dbus-daemon19:30:240
85499562,10cyclictest16368-21systemctl20:50:240
134491560,3ptp4l0-21swapper/020:16:260
856995520,3cyclictest33-21ksoftirqd/219:45:002
85499550,10cyclictest5839-21awk22:50:000
134491550,4ptp4l0-21swapper/121:12:391
134491550,4ptp4l0-21swapper/121:12:381
85699543,5cyclictest33-21ksoftirqd/222:50:002
856995423,5cyclictest33-21ksoftirqd/219:10:142
856995422,7cyclictest33-21ksoftirqd/220:40:232
85499546,6cyclictest17503-21cat00:20:270
85499544,15cyclictest25649-21systemctl21:10:240
85499544,15cyclictest25649-21systemctl21:10:240
85499543,16cyclictest27882-21cut23:35:170
85499542,16cyclictest10380-21date20:40:000
85499541,11cyclictest12166-21timerandwakeup21:50:260
85499540,11cyclictest7289-21cut00:00:180
134491540,4ptp4l0-21swapper/119:17:331
134491540,3ptp4l0-21swapper/120:41:081
134491540,3ptp4l0-21swapper/119:30:301
856995320,6cyclictest33-21ksoftirqd/223:45:172
855995321,4cyclictest25-21ksoftirqd/100:20:011
85499536,6cyclictest0-21swapper/022:35:000
85499535,7cyclictest20875-21phc2sys-jitter19:50:230
85499534,9cyclictest11274-21irqrtprio20:40:160
85499534,8cyclictest19958-21/usr/sbin/munin23:20:110
85499531,11cyclictest4169-21sed19:15:180
134491530,5ptp4l0-21swapper/319:51:313
134491530,3ptp4l0-21swapper/322:06:553
856995221,5cyclictest33-21ksoftirqd/219:35:172
85499522,10cyclictest11570-21latency23:00:210
85499521,17cyclictest10581-21date23:00:000
85499520,11cyclictest31552-21sed21:25:130
85699515,5cyclictest33-21ksoftirqd/200:30:222
85699513,6cyclictest33-21ksoftirqd/200:10:182
85699512,6cyclictest0-21swapper/219:15:222
856995126,6cyclictest33-21ksoftirqd/221:40:202
85699511,7cyclictest33-21ksoftirqd/223:55:232
85499514,9cyclictest28194-21sed21:15:260
85499511,10cyclictest23670-21cat23:25:250
85499510,16cyclictest0-21swapper/021:20:240
85499510,10cyclictest0-21swapper/019:15:010
134491510,4ptp4l0-21swapper/123:15:001
134491510,4ptp4l0-21swapper/120:36:001
134491510,11ptp4l32616-21users19:05:262
85699503,6cyclictest33-21ksoftirqd/220:10:232
85699501,8cyclictest33-21ksoftirqd/221:15:002
85699501,8cyclictest33-21ksoftirqd/221:15:002
85499507,7cyclictest17546-21df19:45:120
85499501,11cyclictest23577-21mailstats22:15:230
85499500,11cyclictest0-21swapper/021:35:230
85499500,10cyclictest24386-21cat20:00:130
134491500,5ptp4l0-21swapper/019:08:430
134491500,4ptp4l0-21swapper/120:13:311
134491500,3ptp4l0-21swapper/223:19:032
134491500,11ptp4l0-21swapper/120:27:491
134491500,10ptp4l0-21swapper/119:14:431
85699494,7cyclictest33-21ksoftirqd/222:15:122
85699494,4cyclictest33-21ksoftirqd/222:00:212
85699493,5cyclictest33-21ksoftirqd/223:20:262
85699493,5cyclictest33-21ksoftirqd/200:40:002
85699493,3cyclictest33-21ksoftirqd/200:05:202
85699492,6cyclictest0-21swapper/223:35:102
85699492,35cyclictest0-21swapper/223:05:142
856994921,5cyclictest33-21ksoftirqd/222:05:132
855994915,7cyclictest25-21ksoftirqd/122:35:001
85499498,5cyclictest0-21swapper/022:25:130
85499491,8cyclictest15121-21timerwakeupswit00:15:270
137891490,5phc2sys401ktimersoftd/320:05:153
134491490,2ptp4l0-21swapper/119:22:471
856994819,6cyclictest33-21ksoftirqd/220:55:242
855994816,4cyclictest25-21ksoftirqd/100:20:181
85499483,12cyclictest31227-21awk23:40:260
85499482,6cyclictest0-21swapper/019:25:300
134491480,4ptp4l0-21swapper/222:11:092
134491480,4ptp4l0-21swapper/121:56:371
134491480,3ptp4l0-21swapper/123:11:151
134491480,3ptp4l0-21swapper/120:47:411
85699475,2cyclictest33-21ksoftirqd/223:10:032
85599473,4cyclictest25-21ksoftirqd/120:20:171
855994713,8cyclictest25-21ksoftirqd/123:40:261
855994711,11cyclictest25-21ksoftirqd/122:10:001
85499475,15cyclictest2318-21gnome-shell22:36:580
85499474,7cyclictest134491ptp4l20:05:180
134491470,4ptp4l0-21swapper/121:00:451
134491470,4ptp4l0-21swapper/120:16:251
134491470,3ptp4l0-21swapper/322:27:383
85599468,8cyclictest25-21ksoftirqd/120:30:171
855994618,7cyclictest25-21ksoftirqd/123:00:001
855994611,7cyclictest25-21ksoftirqd/122:14:591
85499463,6cyclictest19793-21cpuspeed21:00:130
85499462,10cyclictest16721-21ssh23:10:260
134491460,4ptp4l0-21swapper/300:25:163
134491460,4ptp4l0-21swapper/121:39:571
134491460,4ptp4l0-21swapper/119:58:131
134491460,3ptp4l0-21swapper/100:35:001
855994515,7cyclictest25-21ksoftirqd/122:50:131
85499453,7cyclictest32487-21iostat_ios23:45:170
85499452,11cyclictest14419-21ssh23:05:250
134491450,6ptp4l30931-21/usr/sbin/munin19:05:153
134491450,4ptp4l0-21swapper/122:45:391
134491450,3ptp4l0-21swapper/122:28:421
855994414,3cyclictest25-21ksoftirqd/122:40:161
85499447,5cyclictest19100-21timerandwakeup22:05:250
85499444,6cyclictest5300-21ntp_states23:55:210
85499442,7cyclictest19588-21python00:25:240
134491440,22ptp4l0-21swapper/119:09:531
855994326,8cyclictest25-21ksoftirqd/123:40:001
85499431,10cyclictest0-21swapper/022:50:140
85499430,9cyclictest10728-21systemctl00:07:060
855994236,3cyclictest25-21ksoftirqd/119:40:001
855994229,10cyclictest25-21ksoftirqd/100:40:001
85599421,4cyclictest134691getstats19:29:591
855994211,4cyclictest25-21ksoftirqd/100:00:271
85499420,7cyclictest16303-21ls22:00:190
85499420,15cyclictest2462-21ps23:50:170
134491420,4ptp4l2318-21gnome-shell22:50:583
134491420,4ptp4l20960-21ls22:10:190
85799414,36cyclictest0-21swapper/321:27:493
855994135,3cyclictest25-21ksoftirqd/122:20:001
855994113,9cyclictest25-21ksoftirqd/122:00:141
85599410,2cyclictest121rcu_preempt23:58:251
85499415,7cyclictest6394-21iostat_ios20:30:190
85499410,16cyclictest26140-21ls23:30:270
134491410,5ptp4l898-21apt-get21:30:020
134491410,5ptp4l0-21swapper/323:55:113
134491410,4ptp4l5910-21diskstats19:20:133
134491410,4ptp4l15344-21diskstats19:40:141
134491410,4ptp4l13615-21apt-get00:15:123
134491410,4ptp4l0-21swapper/319:25:203
134491410,3ptp4l85172sleep300:04:303
134491410,3ptp4l16553-21ls20:50:271
855994036,3cyclictest25-21ksoftirqd/121:30:011
855994035,3cyclictest25-21ksoftirqd/123:50:211
855994035,3cyclictest25-21ksoftirqd/121:50:151
855994035,3cyclictest25-21ksoftirqd/119:50:011
855994035,3cyclictest25-21ksoftirqd/100:25:171
855994035,3cyclictest25-21ksoftirqd/100:10:001
855994027,5cyclictest25-21ksoftirqd/123:35:011
855994014,8cyclictest25-21ksoftirqd/123:20:261
855994011,8cyclictest25-21ksoftirqd/120:05:211
85499405,16cyclictest5904-21df_inode19:20:120
134491400,5ptp4l0-21swapper/323:15:133
134491400,4ptp4l7176-21ntp_states21:40:213
134491400,4ptp4l0-21swapper/323:40:113
134491400,4ptp4l0-21swapper/322:00:133
134491400,4ptp4l0-21swapper/319:44:533
134491400,4ptp4l0-21swapper/123:45:261
134491400,4ptp4l0-21swapper/122:20:221
134491400,4ptp4l0-21swapper/121:45:071
134491400,4ptp4l0-21swapper/000:30:070
134491400,3ptp4l0-21swapper/121:30:111
85599399,7cyclictest25-21ksoftirqd/121:20:121
855993935,2cyclictest25-21ksoftirqd/100:11:131
855993934,3cyclictest25-21ksoftirqd/122:40:001
85499395,4cyclictest9-21ksoftirqd/022:20:150
134491390,5ptp4l17778-21fw_packets20:55:150
134491390,5ptp4l0-21swapper/323:54:513
134491390,5ptp4l0-21swapper/322:10:263
134491390,5ptp4l0-21swapper/021:05:110
134491390,4ptp4l2285-21ntp_states20:20:220
134491390,4ptp4l17565-21df20:55:141
134491390,4ptp4l16889-21meminfo00:20:203
134491390,4ptp4l0-21swapper/321:50:193
134491390,4ptp4l0-21swapper/319:35:213
134491390,4ptp4l0-21swapper/300:35:143
134491390,3ptp4l31470-21apt-get22:35:123
134491390,3ptp4l27580-21meminfo21:15:191
134491390,3ptp4l22479-21df23:25:141
134491390,3ptp4l14332-21python23:05:241
855993833,3cyclictest25-21ksoftirqd/123:05:001
134491380,5ptp4l0-21swapper/323:11:193
134491380,5ptp4l0-21swapper/321:30:413
134491380,4ptp4l20394-21smartctl23:20:153
134491380,4ptp4l0-21swapper/323:46:463
134491380,4ptp4l0-21swapper/323:39:483
134491380,4ptp4l0-21swapper/323:32:303
134491380,4ptp4l0-21swapper/323:25:363
134491380,4ptp4l0-21swapper/323:04:483
134491380,4ptp4l0-21swapper/322:45:213
134491380,4ptp4l0-21swapper/322:22:053
134491380,4ptp4l0-21swapper/322:18:233
134491380,4ptp4l0-21swapper/321:57:333
134491380,4ptp4l0-21swapper/321:35:133
134491380,4ptp4l0-21swapper/321:16:203
134491380,4ptp4l0-21swapper/320:31:303
134491380,4ptp4l0-21swapper/320:20:573
134491380,4ptp4l0-21swapper/319:15:193
134491380,4ptp4l0-21swapper/300:30:223
134491380,4ptp4l0-21swapper/300:10:163
134491380,4ptp4l0-21swapper/021:45:400
134491380,3ptp4l22463-21hddtemp_smartct21:05:161
134491380,3ptp4l0-21swapper/321:05:283
134491380,3ptp4l0-21swapper/019:35:050
134491370,6ptp4l0-21swapper/319:55:293
134491370,5ptp4l41-21ksoftirqd/320:10:313
134491370,5ptp4l0-21swapper/300:05:133
134491370,4ptp4l0-21swapper/323:08:323
134491370,4ptp4l0-21swapper/322:44:553
134491370,4ptp4l0-21swapper/321:22:523
134491370,4ptp4l0-21swapper/321:12:193
134491370,4ptp4l0-21swapper/321:12:183
134491370,4ptp4l0-21swapper/320:57:473
134491370,4ptp4l0-21swapper/320:15:273
134491370,3ptp4l9621-21/usr/sbin/munin21:45:223
134491370,3ptp4l0-21swapper/322:55:193
134491370,3ptp4l0-21swapper/321:02:343
134491370,3ptp4l0-21swapper/320:37:143
134491370,3ptp4l0-21swapper/320:02:203
134491360,4ptp4l0-21swapper/320:54:263
134491360,4ptp4l0-21swapper/320:40:263
134491360,3ptp4l0-21swapper/320:27:063
134491360,3ptp4l0-21swapper/319:47:423
134491350,4ptp4l0-21swapper/319:30:073
134491350,3ptp4l0-21swapper/320:45:423
134491350,2ptp4l0-21swapper/319:10:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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