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2025-12-27 - 18:08
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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 Dec 27, 2025 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14962996627,8cyclictest25-21ksoftirqd/108:35:111
14962996429,8cyclictest25-21ksoftirqd/109:30:241
14962996336,3cyclictest25-21ksoftirqd/110:55:191
14962996324,7cyclictest25-21ksoftirqd/107:50:281
1496399625,16cyclictest17567-21df_abs07:15:152
134491620,3ptp4l0-21swapper/310:54:073
1496399617,9cyclictest493-21sendmail_mailqu11:15:272
1496399615,15cyclictest4378-21/usr/sbin/munin10:15:172
1496399615,15cyclictest4378-21/usr/sbin/munin10:15:172
14963996112,11cyclictest4696-21grep09:05:212
14962996130,8cyclictest25-21ksoftirqd/112:10:171
14962996129,4cyclictest25-21ksoftirqd/109:45:151
14962996117,8cyclictest25-21ksoftirqd/112:05:241
134491610,5ptp4l0-21swapper/112:30:211
14962996032,4cyclictest25-21ksoftirqd/110:00:111
14962996032,4cyclictest25-21ksoftirqd/109:10:241
1496399596,10cyclictest7385-21ntp_states10:20:262
14962995927,4cyclictest25-21ksoftirqd/110:35:221
134491590,5ptp4l0-21swapper/207:08:072
134491590,5ptp4l0-21swapper/112:15:161
1496399586,9cyclictest1950-21df12:30:142
1496399584,16cyclictest2318-21gnome-shell11:30:242
1496399584,15cyclictest23549-21/usr/sbin/munin10:55:242
1496399583,8cyclictest22243-21cat09:45:002
14962995829,9cyclictest25-21ksoftirqd/112:35:211
14962995829,9cyclictest25-21ksoftirqd/112:35:211
1496399577,10cyclictest18017-21grep11:55:132
14962995731,7cyclictest25-21ksoftirqd/109:40:171
14962995729,3cyclictest25-21ksoftirqd/109:50:251
14962995725,6cyclictest25-21ksoftirqd/112:00:141
14962995724,7cyclictest25-21ksoftirqd/110:40:131
14962995724,11cyclictest25-21ksoftirqd/110:54:591
14962995722,7cyclictest25-21ksoftirqd/110:25:501
1496399565,16cyclictest0-21swapper/211:25:292
1496399565,10cyclictest21709-21cat12:00:272
1496399564,17cyclictest0-21swapper/210:35:172
1496399563,8cyclictest863-21unixbench_multi10:05:292
1496399563,17cyclictest0-21swapper/207:20:152
14962995633,3cyclictest25-21ksoftirqd/111:55:261
14962995631,3cyclictest25-21ksoftirqd/111:35:001
14962995627,8cyclictest25-21ksoftirqd/111:50:151
14962995625,7cyclictest25-21ksoftirqd/107:10:151
14962995623,7cyclictest25-21ksoftirqd/111:20:241
14962995623,3cyclictest25-21ksoftirqd/112:30:001
134491560,3ptp4l0-21swapper/107:25:411
134491560,3ptp4l0-21swapper/107:15:171
14962995525,7cyclictest25-21ksoftirqd/111:20:001
14962995522,7cyclictest25-21ksoftirqd/111:35:171
14961995513,26cyclictest15169-21seq10:39:340
134491550,3ptp4l0-21swapper/007:40:160
1496399547,7cyclictest0-21swapper/208:10:212
1496399547,7cyclictest0-21swapper/208:10:212
1496399546,45cyclictest126402sleep209:23:302
14962995427,8cyclictest25-21ksoftirqd/111:00:251
134491540,4ptp4l0-21swapper/008:35:280
134491540,3ptp4l0-21swapper/308:04:233
1496399535,15cyclictest25136-21df_abs12:10:142
1496399530,10cyclictest0-21swapper/207:30:132
14962995328,7cyclictest25-21ksoftirqd/110:30:261
14962995326,6cyclictest25-21ksoftirqd/108:59:591
14962995320,3cyclictest25-21ksoftirqd/108:20:161
134491530,4ptp4l0-21swapper/007:15:220
134491530,3ptp4l0-21swapper/012:30:130
1496399523,12cyclictest22883-21sed07:25:192
1496299523,7cyclictest25-21ksoftirqd/111:15:001
14962995225,8cyclictest25-21ksoftirqd/108:40:201
14962995221,7cyclictest25-21ksoftirqd/109:05:171
14962995220,7cyclictest25-21ksoftirqd/107:20:141
14962995220,3cyclictest25-21ksoftirqd/111:40:161
14962995218,8cyclictest25-21ksoftirqd/111:25:271
14962995217,8cyclictest25-21ksoftirqd/110:15:241
14962995217,8cyclictest25-21ksoftirqd/110:15:241
1496299521,6cyclictest25-21ksoftirqd/110:15:001
14962995216,7cyclictest25-21ksoftirqd/107:55:251
134491520,5ptp4l0-21swapper/307:06:073
134491520,11ptp4l0-21swapper/009:50:040
1496399514,8cyclictest26868-21apt-get09:55:132
1496399511,16cyclictest23273-21missed_timers09:45:222
14962995126,6cyclictest25-21ksoftirqd/107:35:241
14962995121,7cyclictest25-21ksoftirqd/109:20:161
14962995119,6cyclictest25-21ksoftirqd/110:20:221
14962995119,6cyclictest25-21ksoftirqd/109:55:271
134491510,10ptp4l0-21swapper/011:56:210
1496399509,11cyclictest14148-21awk09:25:222
1496399503,8cyclictest30559-21ls12:20:242
1496399503,10cyclictest609-21proc_pri12:25:242
1496299506,7cyclictest25-21ksoftirqd/112:20:271
14962995022,3cyclictest25-21ksoftirqd/110:48:201
134491500,18ptp4l9-21ksoftirqd/011:24:090
1496399495,18cyclictest31054-21sed07:44:592
1496399494,7cyclictest22628-21apt-get12:05:142
134491490,3ptp4l0-21swapper/111:45:321
1496399489,13cyclictest1301-21snmpd08:30:112
1496399485,9cyclictest3006-21/usr/sbin/munin10:10:262
1496399484,7cyclictest11980-21ntp_states10:30:242
1496299484,5cyclictest25-21ksoftirqd/107:35:001
1496299483,7cyclictest25-21ksoftirqd/109:15:241
14962994818,8cyclictest25-21ksoftirqd/108:35:011
1496299481,3cyclictest25-21ksoftirqd/108:25:161
1496399474,7cyclictest12626-21apt-get08:15:122
1496299475,7cyclictest25-21ksoftirqd/109:39:161
1496299474,3cyclictest25-21ksoftirqd/109:25:131
1496299474,3cyclictest121rcu_preempt07:47:171
1496299473,8cyclictest25-21ksoftirqd/108:48:551
1496299470,7cyclictest25-21ksoftirqd/109:00:241
134491470,3ptp4l0-21swapper/111:05:191
1496399464,8cyclictest17813-21/usr/sbin/munin10:45:232
1496299464,8cyclictest25-21ksoftirqd/108:10:011
1496299463,8cyclictest25-21ksoftirqd/107:40:221
1496299463,3cyclictest25-21ksoftirqd/108:00:181
134491460,6ptp4l10332-21apt-get08:10:130
134491460,6ptp4l10332-21apt-get08:10:130
1496399455,8cyclictest8745-21apt-get11:35:122
1496299453,7cyclictest25-21ksoftirqd/110:05:171
1496299453,3cyclictest25-21ksoftirqd/108:10:241
1496299453,3cyclictest25-21ksoftirqd/108:10:241
14962994516,6cyclictest25-21ksoftirqd/108:15:271
134491450,9ptp4l31362-21latency_hist10:05:000
134491450,6ptp4l0-21swapper/010:40:130
134491450,5ptp4l0-21swapper/007:30:270
134491450,3ptp4l0-21swapper/208:41:262
1496399449,11cyclictest32533-21awk07:45:262
1496399446,8cyclictest19095-21ssh09:35:262
1496299443,7cyclictest25-21ksoftirqd/108:50:171
134491440,11ptp4l0-21swapper/011:05:120
1496399435,8cyclictest7533-21ssh09:10:262
1496399435,8cyclictest16913-21ssh10:40:272
134491430,4ptp4l24921-21apt-get12:10:123
1496499425,6cyclictest134491ptp4l10:45:153
1496399424,15cyclictest1301-21snmpd08:51:572
134491420,9ptp4l0-21swapper/211:22:112
134491420,9ptp4l0-21swapper/208:02:032
134491420,5ptp4l0-21swapper/309:20:273
134491420,5ptp4l0-21swapper/308:35:253
134491420,4ptp4l31694-21apt-get10:05:140
134491420,4ptp4l0-21swapper/309:00:183
134491420,4ptp4l0-21swapper/308:55:133
1496399416,6cyclictest0-21swapper/211:12:242
1496399414,7cyclictest2859-21ls09:00:272
1496399413,7cyclictest26074-21ls09:50:262
134491410,9ptp4l0-21swapper/212:17:502
134491410,6ptp4l15680-21tune2fs09:30:150
134491410,5ptp4l1496199cyclictest10:57:200
134491410,5ptp4l13224-21/usr/sbin/munin09:25:130
134491410,5ptp4l0-21swapper/308:15:243
134491410,5ptp4l0-21swapper/009:05:270
134491410,4ptp4l31384-21df07:45:150
134491410,4ptp4l27072-21apt-get11:05:112
134491410,4ptp4l16110-21ntp_states07:10:220
134491410,4ptp4l12286-21ls09:20:270
134491410,4ptp4l0-21swapper/310:25:143
134491410,3ptp4l401ktimersoftd/310:43:573
134491410,3ptp4l28171-21memory12:15:220
134491410,3ptp4l26560-21apt-get07:35:110
134491410,3ptp4l0-21swapper/008:28:590
134491400,9ptp4l0-21swapper/310:08:303
134491400,5ptp4l30781-21sed11:10:263
134491400,5ptp4l22130-21unattended-upgr10:54:062
134491400,5ptp4l0-21swapper/309:25:113
134491400,5ptp4l0-21swapper/011:25:180
134491400,5ptp4l0-21swapper/009:00:250
134491400,4ptp4l8289-21apt-get11:35:010
134491400,4ptp4l8248-21/usr/sbin/munin08:05:150
134491400,4ptp4l5947-21df08:00:140
134491400,4ptp4l28290-21ls09:55:273
134491400,4ptp4l27596-21/usr/sbin/munin08:45:190
134491400,4ptp4l22811-21irqstats07:25:190
134491400,4ptp4l15254-21df_inode08:20:153
134491400,4ptp4l0-21swapper/310:35:203
134491400,4ptp4l0-21swapper/309:45:233
134491400,4ptp4l0-21swapper/207:36:572
134491400,4ptp4l0-21swapper/012:38:430
134491400,4ptp4l0-21swapper/012:38:430
134491400,4ptp4l0-21swapper/010:50:280
134491400,4ptp4l0-21swapper/009:56:180
134491400,4ptp4l0-21swapper/009:35:120
134491400,3ptp4l26348-21ls11:00:300
134491400,3ptp4l24994-21iostat_ios08:40:170
134491400,3ptp4l20285-21df_inode09:40:170
134491400,3ptp4l18010-21apt-get11:55:113
134491400,3ptp4l11627-21iostat11:40:170
134491400,2ptp4l31666-21apt-get11:15:140
134491400,2ptp4l0-21swapper/311:00:133
134491400,2ptp4l0-21swapper/308:50:173
1496399394,7cyclictest30027-21irqstats10:00:192
1496399393,14cyclictest0-21swapper/211:40:272
134491390,6ptp4l4254-21irqrtprio09:05:173
134491390,5ptp4l6697-21sh10:20:193
134491390,5ptp4l41-21ksoftirqd/308:26:023
134491390,5ptp4l15886-21sed08:20:190
134491390,5ptp4l0-21swapper/310:11:093
134491390,5ptp4l0-21swapper/208:55:292
134491390,4ptp4l9515-21ntp_states09:15:230
134491390,4ptp4l22923-21sed12:05:170
134491390,4ptp4l0-21swapper/310:15:213
134491390,4ptp4l0-21swapper/310:15:213
134491390,4ptp4l0-21swapper/309:40:193
134491390,4ptp4l0-21swapper/309:39:353
134491390,4ptp4l0-21swapper/309:15:133
134491390,4ptp4l0-21swapper/308:40:153
134491390,4ptp4l0-21swapper/307:11:103
134491390,4ptp4l0-21swapper/208:46:032
134491390,4ptp4l0-21swapper/208:25:282
134491390,4ptp4l0-21swapper/208:05:242
134491390,4ptp4l0-21swapper/012:27:420
134491390,4ptp4l0-21swapper/012:10:230
134491390,4ptp4l0-21swapper/012:00:160
134491390,4ptp4l0-21swapper/011:50:150
134491390,4ptp4l0-21swapper/011:10:160
134491390,4ptp4l0-21swapper/010:31:470
134491390,4ptp4l0-21swapper/010:25:090
134491390,4ptp4l0-21swapper/010:24:310
134491390,4ptp4l0-21swapper/010:10:170
134491390,4ptp4l0-21swapper/009:45:290
134491390,4ptp4l0-21swapper/008:50:300
134491390,4ptp4l0-21swapper/007:20:170
134491390,3ptp4l3850-21hddtemp_smartct07:55:150
134491390,3ptp4l31517-21cstates08:55:150
134491390,3ptp4l26708-21/usr/sbin/munin08:45:183
134491390,3ptp4l24778-21apt-get11:00:132
134491380,5ptp4l0-21swapper/311:05:113
134491380,5ptp4l0-21swapper/310:56:233
134491380,5ptp4l0-21swapper/307:54:143
134491380,5ptp4l0-21swapper/007:09:570
134491380,4ptp4l1496499cyclictest11:30:593
134491380,4ptp4l0-21swapper/312:20:103
134491380,4ptp4l0-21swapper/311:41:333
134491380,4ptp4l0-21swapper/311:20:153
134491380,4ptp4l0-21swapper/310:30:013
134491380,4ptp4l0-21swapper/309:51:473
134491380,4ptp4l0-21swapper/309:30:123
134491380,4ptp4l0-21swapper/308:11:423
134491380,4ptp4l0-21swapper/308:11:423
134491380,4ptp4l0-21swapper/307:22:413
134491380,4ptp4l0-21swapper/307:17:173
134491380,4ptp4l0-21swapper/212:37:072
134491380,4ptp4l0-21swapper/212:37:072
134491380,4ptp4l0-21swapper/211:47:172
134491380,4ptp4l0-21swapper/210:25:162
134491380,4ptp4l0-21swapper/209:31:422
134491380,4ptp4l0-21swapper/209:19:212
134491380,4ptp4l0-21swapper/208:35:132
134491380,4ptp4l0-21swapper/207:59:262
134491380,4ptp4l0-21swapper/207:51:142
134491380,4ptp4l0-21swapper/207:12:082
134491380,4ptp4l0-21swapper/012:20:580
134491380,4ptp4l0-21swapper/011:46:490
134491380,4ptp4l0-21swapper/011:31:490
134491380,4ptp4l0-21swapper/010:15:260
134491380,4ptp4l0-21swapper/010:15:260
134491380,4ptp4l0-21swapper/009:10:000
134491380,4ptp4l0-21swapper/008:31:170
134491380,4ptp4l0-21swapper/008:17:270
134491380,4ptp4l0-21swapper/007:50:110
134491380,3ptp4l32035-21cut11:15:183
134491380,3ptp4l30862-21sshd07:44:223
134491380,3ptp4l0-21swapper/308:30:243
134491370,5ptp4l0-21swapper/312:30:263
134491370,4ptp4l1496199cyclictest10:45:120
134491370,4ptp4l0-21swapper/312:16:373
134491370,4ptp4l0-21swapper/312:02:493
134491370,4ptp4l0-21swapper/311:46:163
134491370,4ptp4l0-21swapper/311:39:013
134491370,4ptp4l0-21swapper/311:27:003
134491370,4ptp4l0-21swapper/310:00:123
134491370,4ptp4l0-21swapper/309:11:303
134491370,4ptp4l0-21swapper/307:58:563
134491370,4ptp4l0-21swapper/307:49:303
134491370,4ptp4l0-21swapper/307:30:203
134491370,4ptp4l0-21swapper/307:29:233
134491370,4ptp4l0-21swapper/211:52:442
134491370,4ptp4l0-21swapper/208:20:132
134491370,4ptp4l0-21swapper/107:09:551
134491370,3ptp4l9461-21ls08:05:283
134491370,3ptp4l0-21swapper/312:27:403
134491370,3ptp4l0-21swapper/307:39:183
134491360,3ptp4l0-21swapper/312:06:293
134491360,3ptp4l0-21swapper/311:51:163
134491350,4ptp4l0-21swapper/312:35:563
134491350,4ptp4l0-21swapper/312:35:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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