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2026-07-09 - 14:53
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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 Jul 09, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2931997335,7cyclictest33-21ksoftirqd/223:00:002
2931997237,5cyclictest33-21ksoftirqd/219:20:002
2931997236,4cyclictest33-21ksoftirqd/219:40:002
2931997236,4cyclictest33-21ksoftirqd/219:40:002
2931996936,5cyclictest33-21ksoftirqd/200:20:002
2931996930,6cyclictest33-21ksoftirqd/221:00:012
2931996733,6cyclictest33-21ksoftirqd/223:45:282
2931996732,5cyclictest33-21ksoftirqd/200:10:002
2931996532,6cyclictest33-21ksoftirqd/219:20:172
323562640,4sleep3448-21dbus-daemon20:10:253
2931996434,4cyclictest33-21ksoftirqd/223:10:142
2931996432,5cyclictest33-21ksoftirqd/223:05:152
2931996432,5cyclictest33-21ksoftirqd/221:40:002
2931996431,4cyclictest33-21ksoftirqd/221:20:142
2931996428,6cyclictest33-21ksoftirqd/222:00:262
2931996425,8cyclictest33-21ksoftirqd/200:35:272
2931996333,6cyclictest33-21ksoftirqd/221:25:142
2931996332,6cyclictest33-21ksoftirqd/200:20:152
2931996331,7cyclictest33-21ksoftirqd/220:10:002
2931996331,6cyclictest33-21ksoftirqd/223:15:192
2931996330,6cyclictest33-21ksoftirqd/222:10:232
2931996330,6cyclictest33-21ksoftirqd/219:50:122
2931996329,6cyclictest33-21ksoftirqd/221:00:142
2931996329,5cyclictest33-21ksoftirqd/223:20:162
2931996329,5cyclictest33-21ksoftirqd/223:20:162
2929996332,7cyclictest9-21ksoftirqd/000:08:060
2931996232,5cyclictest33-21ksoftirqd/220:01:122
2931996231,5cyclictest33-21ksoftirqd/222:30:272
2931996230,7cyclictest33-21ksoftirqd/223:00:242
2931996230,6cyclictest33-21ksoftirqd/220:20:272
2931996230,6cyclictest33-21ksoftirqd/220:15:242
2931996229,6cyclictest33-21ksoftirqd/200:30:242
2931996224,5cyclictest33-21ksoftirqd/223:25:252
2931996133,7cyclictest33-21ksoftirqd/220:45:012
2931996132,7cyclictest33-21ksoftirqd/223:55:182
2931996131,6cyclictest33-21ksoftirqd/222:05:252
2931996130,4cyclictest33-21ksoftirqd/222:00:012
2931996128,5cyclictest33-21ksoftirqd/219:30:292
2931996127,6cyclictest33-21ksoftirqd/200:30:002
2931996127,5cyclictest33-21ksoftirqd/221:40:162
2931996127,5cyclictest33-21ksoftirqd/200:10:202
111422610,5sleep30-21swapper/319:25:233
2931996028,5cyclictest33-21ksoftirqd/200:00:132
2931996025,5cyclictest33-21ksoftirqd/219:10:232
134491600,4ptp4l0-21swapper/019:05:190
134491600,4ptp4l0-21swapper/019:05:190
2931995929,4cyclictest33-21ksoftirqd/219:40:262
2931995929,3cyclictest33-21ksoftirqd/223:40:202
2931995928,6cyclictest33-21ksoftirqd/221:20:002
2931995928,3cyclictest33-21ksoftirqd/223:30:182
2931995927,6cyclictest33-21ksoftirqd/222:50:162
2931995923,5cyclictest33-21ksoftirqd/220:50:012
293099590,3cyclictest134491ptp4l20:20:181
2929995923,4cyclictest9-21ksoftirqd/000:30:000
2931995829,4cyclictest33-21ksoftirqd/220:13:232
2931995724,6cyclictest33-21ksoftirqd/221:50:242
2931995722,5cyclictest33-21ksoftirqd/223:35:182
293099572,2cyclictest0-21swapper/122:15:121
2929995728,3cyclictest9-21ksoftirqd/000:20:150
2929995727,4cyclictest9-21ksoftirqd/019:35:180
2929995727,4cyclictest9-21ksoftirqd/019:35:180
2931995627,6cyclictest33-21ksoftirqd/222:45:252
2929995624,5cyclictest9-21ksoftirqd/000:05:010
2929995619,5cyclictest9-21ksoftirqd/019:10:220
134491560,4ptp4l0-21swapper/123:10:141
134491560,4ptp4l0-21swapper/020:50:240
134491560,3ptp4l0-21swapper/022:10:150
2931995530,6cyclictest33-21ksoftirqd/223:51:272
2931995530,6cyclictest33-21ksoftirqd/223:51:272
2931995527,7cyclictest33-21ksoftirqd/222:35:162
2931995524,5cyclictest33-21ksoftirqd/220:30:192
2931995523,6cyclictest33-21ksoftirqd/221:05:172
2929995524,3cyclictest9-21ksoftirqd/022:25:000
2929995521,7cyclictest9-21ksoftirqd/021:30:240
2929995520,6cyclictest9-21ksoftirqd/021:25:120
2929995518,7cyclictest9-21ksoftirqd/020:15:230
2931995421,6cyclictest33-21ksoftirqd/219:45:172
2929995421,4cyclictest9-21ksoftirqd/023:00:000
2929995417,7cyclictest9-21ksoftirqd/019:35:000
134491540,4ptp4l0-21swapper/020:39:580
2931995323,5cyclictest33-21ksoftirqd/220:25:132
2931995318,6cyclictest33-21ksoftirqd/222:25:172
293099530,3cyclictest21550-21users22:05:281
2929995323,7cyclictest9-21ksoftirqd/000:10:240
2929995322,5cyclictest9-21ksoftirqd/020:10:000
2929995321,6cyclictest9-21ksoftirqd/020:55:280
134491530,4ptp4l0-21swapper/022:00:150
2929995225,3cyclictest9-21ksoftirqd/021:05:110
2929995223,8cyclictest9-21ksoftirqd/023:15:140
2929995221,7cyclictest9-21ksoftirqd/000:35:270
2929995220,4cyclictest9-21ksoftirqd/020:10:270
134491520,4ptp4l0-21swapper/121:35:461
134491520,4ptp4l0-21swapper/022:05:410
134491520,4ptp4l0-21swapper/020:47:350
2932995130,18cyclictest41-21ksoftirqd/322:00:113
293199514,3cyclictest33-21ksoftirqd/221:45:192
293099511,4cyclictest134691getstats00:35:221
293099510,3cyclictest6105-21irqstats19:15:191
2929995122,6cyclictest9-21ksoftirqd/023:00:250
2929995119,6cyclictest9-21ksoftirqd/019:20:010
2929995117,5cyclictest9-21ksoftirqd/000:30:280
293199504,9cyclictest33-21ksoftirqd/221:30:162
293199504,3cyclictest0-21swapper/221:10:132
2931995034,4cyclictest33-21ksoftirqd/219:55:172
293199502,3cyclictest17742-21uniq20:50:162
2931995023,7cyclictest33-21ksoftirqd/222:20:172
293199501,2cyclictest121rcu_preempt22:20:002
2929995023,3cyclictest9-21ksoftirqd/023:25:110
2929995022,4cyclictest9-21ksoftirqd/022:54:410
2929995018,5cyclictest9-21ksoftirqd/020:20:200
2929995012,6cyclictest9-21ksoftirqd/022:40:210
134491500,3ptp4l0-21swapper/023:10:210
134491500,3ptp4l0-21swapper/019:26:560
293199492,4cyclictest11493-21chrt19:25:262
293099491,3cyclictest23828-21diskstats00:30:151
2929994922,4cyclictest9-21ksoftirqd/022:17:510
2929994914,5cyclictest9-21ksoftirqd/023:50:240
2929994914,5cyclictest9-21ksoftirqd/023:50:240
2929994914,4cyclictest9-21ksoftirqd/023:45:000
134491490,4ptp4l0-21swapper/122:54:241
134491490,4ptp4l0-21swapper/019:50:030
134491490,3ptp4l0-21swapper/019:23:430
2929994824,6cyclictest9-21ksoftirqd/023:35:120
2929994821,3cyclictest9-21ksoftirqd/020:27:340
2929994818,5cyclictest9-21ksoftirqd/021:15:250
2929994814,4cyclictest9-21ksoftirqd/020:00:200
134491480,4ptp4l0-21swapper/021:36:120
134491480,4ptp4l0-21swapper/021:24:040
134491480,4ptp4l0-21swapper/019:57:460
134491480,3ptp4l0-21swapper/320:35:373
293199473,1cyclictest0-21swapper/222:40:132
2929994715,7cyclictest9-21ksoftirqd/000:20:000
292999471,3cyclictest9-21ksoftirqd/022:25:230
2929994713,8cyclictest9-21ksoftirqd/019:45:160
2929994710,6cyclictest9-21ksoftirqd/021:50:270
134491470,4ptp4l0-21swapper/023:34:590
293199461,2cyclictest121rcu_preempt20:35:242
2929994628,3cyclictest9-21ksoftirqd/022:31:270
2929994620,6cyclictest9-21ksoftirqd/020:40:140
2929994620,3cyclictest9-21ksoftirqd/019:42:130
2929994617,5cyclictest9-21ksoftirqd/021:45:190
2929994616,3cyclictest9-21ksoftirqd/023:55:250
134491460,3ptp4l0-21swapper/123:48:201
293099450,3cyclictest134491ptp4l20:15:241
2929994526,8cyclictest9-21ksoftirqd/023:25:000
2929994526,8cyclictest9-21ksoftirqd/023:25:000
2929994515,3cyclictest9-21ksoftirqd/023:05:200
134491450,4ptp4l0-21swapper/021:55:080
134491450,3ptp4l0-21swapper/021:01:260
2929994435,2cyclictest9-21ksoftirqd/021:10:280
134491440,5ptp4l9808-21meminfo00:00:211
134491440,5ptp4l16384-21apt-get00:15:103
134491440,5ptp4l0-21swapper/100:05:041
134491440,4ptp4l10557-21apt-get22:55:131
134491440,4ptp4l0-21swapper/323:40:313
134491440,3ptp4l3665-21apt-get22:40:121
292999433,3cyclictest121rcu_preempt23:45:280
2929994322,3cyclictest9-21ksoftirqd/020:30:280
134691430,10getstats0-21swapper/323:50:113
134691430,10getstats0-21swapper/323:50:113
134491430,5ptp4l24896-21iostat_ios21:05:161
134491430,5ptp4l0-21swapper/119:07:471
134491430,5ptp4l0-21swapper/119:07:471
134491430,4ptp4l4243-21apt-get23:50:121
134491430,4ptp4l4243-21apt-get23:50:121
134491430,4ptp4l22026-21apt-get21:00:121
134491430,3ptp4l148452chrt21:53:321
134491430,3ptp4l0-21swapper/123:34:171
292999420,2cyclictest121rcu_preempt22:35:120
292999420,2cyclictest121rcu_preempt21:40:150
134491420,5ptp4l0-21swapper/323:35:233
134491420,4ptp4l6910-21meminfo22:45:181
134491420,4ptp4l23941-21apt-get19:55:111
134491420,4ptp4l20767-21apt-get00:25:013
134491420,4ptp4l0-21swapper/122:39:581
134491420,4ptp4l0-21swapper/119:34:011
134491420,3ptp4l0-21swapper/319:20:293
134691410,10getstats0-21swapper/322:26:323
134491410,6ptp4l0-21swapper/120:33:051
134491410,5ptp4l25-21ksoftirqd/119:25:211
134491410,5ptp4l16598-21timerandwakeup20:45:273
134491410,5ptp4l0-21swapper/120:50:171
134491410,5ptp4l0-21swapper/120:35:171
134491410,4ptp4l6384-21hddtemp_smartct22:45:140
134491410,4ptp4l31538-21df_inode21:20:151
134491410,4ptp4l29867-21memory21:15:213
134491410,4ptp4l26792-21apt-get22:20:101
134491410,4ptp4l25-21ksoftirqd/123:40:201
134491410,4ptp4l17582-21apt-get22:00:121
134491410,4ptp4l15469-21meminfo19:35:181
134491410,4ptp4l15469-21meminfo19:35:181
134491410,4ptp4l13642-21apt-get00:10:023
134491410,4ptp4l12764-21apt-get20:40:101
134491410,4ptp4l0-21swapper/120:25:161
134491410,4ptp4l0-21swapper/119:40:171
134491410,3ptp4l8319-21apt-get21:40:111
134491410,3ptp4l2960-21apt-get19:10:121
134491410,3ptp4l21029-21iostat_ios23:15:191
134491410,3ptp4l14375-21ls23:00:271
2930994033,4cyclictest25-21ksoftirqd/100:20:111
134491400,4ptp4l27474-21ps20:00:271
134491400,4ptp4l22856-21ps19:50:241
134491400,4ptp4l15480-21/usr/sbin/munin21:55:121
134491400,4ptp4l11041-21perl21:45:151
134491400,4ptp4l0-21swapper/320:15:183
134491400,4ptp4l0-21swapper/319:15:263
134491400,4ptp4l0-21swapper/123:05:211
134491400,4ptp4l0-21swapper/122:25:101
134491400,4ptp4l0-21swapper/120:10:241
134491400,4ptp4l0-21swapper/120:05:581
134491400,4ptp4l0-21swapper/100:25:211
134491400,3ptp4l3708-21apt-get21:30:121
134491400,3ptp4l15364-21df_inode20:45:141
134491400,3ptp4l1327-21apt-get21:25:111
134491400,3ptp4l0-21swapper/119:48:291
293099390,3cyclictest20118-21fschecks_time20:55:151
134491390,7ptp4l0-21swapper/119:24:561
134491390,5ptp4l0-21swapper/122:10:151
134491390,4ptp4l293299cyclictest21:56:093
134491390,4ptp4l0-21swapper/322:31:393
134491390,4ptp4l0-21swapper/322:14:173
134491390,4ptp4l0-21swapper/321:49:263
134491390,4ptp4l0-21swapper/321:40:193
134491390,4ptp4l0-21swapper/320:25:143
134491390,4ptp4l0-21swapper/320:25:003
134491390,4ptp4l0-21swapper/320:05:203
134491390,4ptp4l0-21swapper/319:50:453
134491390,4ptp4l0-21swapper/319:10:143
134491390,4ptp4l0-21swapper/300:04:133
134491390,4ptp4l0-21swapper/123:55:251
134491390,4ptp4l0-21swapper/123:25:121
134491390,4ptp4l0-21swapper/123:22:231
134491390,4ptp4l0-21swapper/123:22:231
134491390,4ptp4l0-21swapper/122:30:161
134491390,4ptp4l0-21swapper/121:15:171
134491390,4ptp4l0-21swapper/100:15:231
134491390,3ptp4l30618-21memory23:35:201
2932993833,3cyclictest28667-21cron21:15:003
2932993831,5cyclictest41-21ksoftirqd/321:51:123
134491380,4ptp4l0-21swapper/323:32:453
134491380,4ptp4l0-21swapper/323:11:583
134491380,4ptp4l0-21swapper/322:55:053
134491380,4ptp4l0-21swapper/322:52:003
134491380,4ptp4l0-21swapper/322:45:123
134491380,4ptp4l0-21swapper/322:06:283
134491380,4ptp4l0-21swapper/321:35:583
134491380,4ptp4l0-21swapper/321:28:123
134491380,4ptp4l0-21swapper/320:56:023
134491380,4ptp4l0-21swapper/320:51:083
134491380,4ptp4l0-21swapper/319:58:503
134491380,4ptp4l0-21swapper/300:31:263
134491380,4ptp4l0-21swapper/300:05:213
134491380,4ptp4l0-21swapper/121:10:251
134491380,4ptp4l0-21swapper/100:11:491
134491380,3ptp4l0-21swapper/323:18:593
134491380,3ptp4l0-21swapper/322:20:163
134491380,3ptp4l0-21swapper/321:20:303
134491380,3ptp4l0-21swapper/300:35:163
134491380,3ptp4l0-21swapper/300:20:133
2932993730,5cyclictest41-21ksoftirqd/320:41:533
293299370,4cyclictest134691getstats23:00:203
134491370,4ptp4l0-21swapper/322:38:123
134491370,4ptp4l0-21swapper/320:33:003
134491370,4ptp4l0-21swapper/319:40:293
134491370,3ptp4l0-21swapper/323:45:273
134491370,3ptp4l0-21swapper/323:22:293
134491370,3ptp4l0-21swapper/323:22:293
134491370,3ptp4l0-21swapper/321:32:023
134491370,3ptp4l0-21swapper/321:01:153
134491370,3ptp4l0-21swapper/320:01:433
134491360,3ptp4l0-21swapper/323:58:203
134491360,3ptp4l0-21swapper/323:29:063
134491360,3ptp4l0-21swapper/322:42:583
134491360,3ptp4l0-21swapper/322:17:293
293299333,4cyclictest19133-21apt-get19:45:113
293299333,3cyclictest14465-21apt-get19:35:103
293299333,3cyclictest14465-21apt-get19:35:103
2932993327,4cyclictest41-21ksoftirqd/321:09:173
134491330,4ptp4l0-21swapper/323:05:113
134491310,3ptp4l0-21swapper/319:32:343
4762254,12sleep3492-21apt-get19:05:103
4762254,12sleep3492-21apt-get19:05:103
7462184,9sleep20-21swapper/219:05:142
7462184,9sleep20-21swapper/219:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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