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2025-12-12 - 05:21
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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 Fri Dec 12, 2025 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191690,4ptp4l0-21swapper/119:20:251
174052690,4sleep00-21swapper/021:00:310
2847191660,3ptp4l10451-21meminfo21:55:261
2923799637,39cyclictest2847191ptp4l00:15:563
2847191630,4ptp4l29186-21iostat_ios23:45:201
2847191620,4ptp4l0-21swapper/219:05:082
2847191600,3ptp4l32664-21iostat_ios21:35:171
29234995825,7cyclictest9-21ksoftirqd/020:19:510
2847191580,5ptp4l0-21swapper/122:30:331
2847191560,3ptp4l0-21swapper/221:16:232
2847191560,3ptp4l0-21swapper/122:20:161
2847191560,3ptp4l0-21swapper/120:00:131
2847191560,3ptp4l0-21swapper/119:31:101
2847191560,3ptp4l0-21swapper/100:14:011
2847191550,4ptp4l0-21swapper/120:43:571
2847191550,4ptp4l0-21swapper/120:38:451
29237995424,17cyclictest41-21ksoftirqd/321:40:193
2847191540,17ptp4l5779-21sshd19:27:221
2847191540,12ptp4l0-21swapper/120:07:361
102142540,5sleep10-21swapper/119:35:271
29236995318,9cyclictest33-21ksoftirqd/219:58:262
2847191530,4ptp4l0-21swapper/023:37:190
2847191530,3ptp4l0-21swapper/022:45:500
29234995222,4cyclictest9-21ksoftirqd/019:55:220
2847191520,4ptp4l0-21swapper/200:39:012
2847191520,4ptp4l0-21swapper/123:19:091
2847191520,4ptp4l0-21swapper/020:06:410
2847191520,3ptp4l0-21swapper/100:18:451
2847191520,3ptp4l0-21swapper/023:47:490
2923699514,2cyclictest121rcu_preempt22:40:192
29234995124,9cyclictest9-21ksoftirqd/023:15:520
2847191510,4ptp4l0-21swapper/319:06:003
2847191510,4ptp4l0-21swapper/122:17:571
2847191510,4ptp4l0-21swapper/021:29:500
2847191510,3ptp4l0-21swapper/023:50:270
2847191510,3ptp4l0-21swapper/023:40:130
29237995027,11cyclictest41-21ksoftirqd/322:03:163
29234995020,3cyclictest9-21ksoftirqd/019:42:240
2847191500,5ptp4l0-21swapper/019:07:130
2847191500,4ptp4l0-21swapper/020:51:310
2847191500,4ptp4l0-21swapper/020:21:410
2847191500,4ptp4l0-21swapper/019:27:530
2847191500,3ptp4l0-21swapper/322:33:053
2847191500,3ptp4l0-21swapper/122:25:571
2847191500,3ptp4l0-21swapper/022:08:010
2847191500,16ptp4l0-21swapper/219:10:012
29234994925,8cyclictest9-21ksoftirqd/000:39:070
29234994920,4cyclictest9-21ksoftirqd/023:20:320
29234994919,7cyclictest9-21ksoftirqd/022:00:000
29234994918,6cyclictest9-21ksoftirqd/022:55:250
2847191490,4ptp4l0-21swapper/123:26:551
2847191490,4ptp4l0-21swapper/023:08:520
2847191490,4ptp4l0-21swapper/021:42:340
2847191490,4ptp4l0-21swapper/000:21:240
2847191490,3ptp4l0-21swapper/000:10:580
29234994830,8cyclictest9-21ksoftirqd/021:50:170
29234994824,5cyclictest9-21ksoftirqd/021:38:590
29234994820,4cyclictest9-21ksoftirqd/022:30:070
29234994819,5cyclictest9-21ksoftirqd/022:15:190
2847191480,3ptp4l0-21swapper/321:04:123
2847191480,3ptp4l0-21swapper/119:53:421
29237994726,5cyclictest41-21ksoftirqd/322:50:313
29234994719,3cyclictest9-21ksoftirqd/023:10:530
29234994717,3cyclictest9-21ksoftirqd/020:25:360
29234994715,4cyclictest9-21ksoftirqd/021:07:420
2847191470,4ptp4l0-21swapper/121:27:211
2847191470,3ptp4l0-21swapper/121:50:181
2847191470,2ptp4l0-21swapper/022:36:050
2847191470,12ptp4l0-21swapper/222:15:062
29234994628,8cyclictest9-21ksoftirqd/000:20:010
29234994627,8cyclictest9-21ksoftirqd/021:45:200
29234994626,8cyclictest9-21ksoftirqd/020:00:250
29234994618,7cyclictest9-21ksoftirqd/023:34:280
2847191460,4ptp4l0-21swapper/123:57:581
2847191460,3ptp4l0-21swapper/122:43:081
2847191460,2ptp4l121rcu_preempt22:00:301
29237994531,6cyclictest41-21ksoftirqd/300:20:193
2923699456,6cyclictest33-21ksoftirqd/222:37:202
2923699455,3cyclictest33-21ksoftirqd/200:25:312
29234994527,8cyclictest9-21ksoftirqd/020:45:270
29234994518,3cyclictest9-21ksoftirqd/020:42:240
29234994517,3cyclictest9-21ksoftirqd/023:04:230
29234994516,6cyclictest9-21ksoftirqd/019:50:240
29234994516,5cyclictest9-21ksoftirqd/020:30:160
29234994515,4cyclictest9-21ksoftirqd/019:30:230
29234994514,3cyclictest9-21ksoftirqd/019:21:220
2849491450,4getstats0-21swapper/000:09:260
2847191450,5ptp4l0-21swapper/222:20:132
2847191450,5ptp4l0-21swapper/200:10:152
2847191450,4ptp4l11819-21apt-get22:00:142
2847191450,3ptp4l0-21swapper/119:17:291
29237994422,14cyclictest41-21ksoftirqd/319:25:263
2923699446,3cyclictest121rcu_preempt00:35:002
29236994419,3cyclictest33-21ksoftirqd/221:21:422
29236994416,3cyclictest33-21ksoftirqd/219:26:002
29234994417,8cyclictest9-21ksoftirqd/022:42:330
29234994416,4cyclictest9-21ksoftirqd/021:14:030
29234994415,3cyclictest9-21ksoftirqd/022:50:180
29234994413,3cyclictest9-21ksoftirqd/019:45:410
2847191440,9ptp4l0-21swapper/223:17:202
2847191440,9ptp4l0-21swapper/222:49:262
2847191440,9ptp4l0-21swapper/219:49:502
2847191440,5ptp4l0-21swapper/219:35:132
2847191440,4ptp4l3218-21apt-get00:00:141
2847191440,4ptp4l0-21swapper/123:09:161
2847191440,3ptp4l813-21apt-get23:55:152
2847191440,3ptp4l0-21swapper/121:10:461
29237994328,7cyclictest41-21ksoftirqd/300:25:323
2923699437,9cyclictest33-21ksoftirqd/220:15:222
2923699434,3cyclictest121rcu_preempt21:54:272
2923499439,4cyclictest9-21ksoftirqd/000:00:330
29234994327,7cyclictest9-21ksoftirqd/022:20:170
29234994326,8cyclictest9-21ksoftirqd/021:15:160
29234994313,7cyclictest9-21ksoftirqd/021:00:010
2847191430,5ptp4l0-21swapper/223:40:112
2847191430,4ptp4l0-21swapper/119:08:301
2847191430,3ptp4l9858-21apt-get23:05:142
2847191430,3ptp4l0-21swapper/119:48:151
29237994229,6cyclictest41-21ksoftirqd/323:56:243
29237994227,7cyclictest41-21ksoftirqd/323:30:213
29237994227,7cyclictest41-21ksoftirqd/321:45:243
29237994213,6cyclictest41-21ksoftirqd/320:44:473
29237994210,4cyclictest41-21ksoftirqd/323:40:303
2923699425,9cyclictest33-21ksoftirqd/219:20:002
29236994230,4cyclictest33-21ksoftirqd/223:00:012
29236994228,3cyclictest33-21ksoftirqd/222:50:222
2923699420,4cyclictest33-21ksoftirqd/223:40:002
29234994225,10cyclictest9-21ksoftirqd/020:13:410
29234994217,6cyclictest9-21ksoftirqd/023:26:090
29234994210,3cyclictest9-21ksoftirqd/019:15:170
2847191420,9ptp4l0-21swapper/220:46:312
2847191420,4ptp4l19669-21apt-get00:35:151
2847191420,4ptp4l15054-21ls20:55:281
29237994127,7cyclictest41-21ksoftirqd/323:15:243
29237994127,6cyclictest41-21ksoftirqd/320:50:223
29237994127,6cyclictest41-21ksoftirqd/300:35:323
29237994125,6cyclictest41-21ksoftirqd/323:10:253
29237994125,6cyclictest41-21ksoftirqd/321:55:273
29234994125,5cyclictest9-21ksoftirqd/022:26:140
29234994123,5cyclictest9-21ksoftirqd/000:31:010
29234994113,6cyclictest9-21ksoftirqd/022:00:160
29234994112,9cyclictest9-21ksoftirqd/019:35:190
29234994110,4cyclictest9-21ksoftirqd/020:35:160
2847191410,8ptp4l0-21swapper/222:33:582
2847191410,5ptp4l31232-21df_inode23:50:161
2847191410,5ptp4l0-21swapper/221:02:582
2847191410,4ptp4l8093-21apt-get00:10:153
2847191410,4ptp4l32388-21hddtemp_smartct20:25:201
2847191410,4ptp4l25725-21iostat_ios21:20:210
2847191410,4ptp4l23388-21iostat21:15:201
2847191410,4ptp4l18190-21apt-get21:05:171
2847191410,4ptp4l13293-21ntp_states23:10:251
2847191410,3ptp4l6610-21ls00:05:231
2847191410,3ptp4l3491-21ls20:30:291
2847191410,3ptp4l29775-21apt-get21:30:131
2847191410,3ptp4l25078-21ntp_states23:35:241
2847191410,3ptp4l17762-21ls23:20:231
29237994026,6cyclictest41-21ksoftirqd/300:02:243
29237994025,6cyclictest41-21ksoftirqd/323:50:263
29237994024,7cyclictest41-21ksoftirqd/322:35:233
29237994024,7cyclictest41-21ksoftirqd/321:10:263
29237994010,8cyclictest41-21ksoftirqd/323:45:233
29237994010,4cyclictest41-21ksoftirqd/319:12:473
2923699405,3cyclictest121rcu_preempt19:40:202
2923699402,4cyclictest33-21ksoftirqd/223:05:012
2923699400,5cyclictest33-21ksoftirqd/223:25:262
2923499400,2cyclictest121rcu_preempt22:10:440
2847191400,7ptp4l0-21swapper/100:30:421
2847191400,5ptp4l0-21swapper/320:10:593
2847191400,4ptp4l28329-21df_inode22:35:141
2847191400,4ptp4l1901-21apt-get20:30:133
2847191400,4ptp4l14719-21iostat_ios22:05:241
2847191400,4ptp4l11237-21apt-get20:50:151
2847191400,4ptp4l0-21swapper/320:25:153
2847191400,4ptp4l0-21swapper/319:17:233
2847191400,4ptp4l0-21swapper/223:30:452
2847191400,4ptp4l0-21swapper/221:48:452
2847191400,4ptp4l0-21swapper/221:35:092
2847191400,4ptp4l0-21swapper/221:32:312
2847191400,4ptp4l0-21swapper/220:31:362
2847191400,4ptp4l0-21swapper/220:20:432
2847191400,4ptp4l0-21swapper/219:30:412
2847191400,4ptp4l0-21swapper/219:24:512
2847191400,4ptp4l0-21swapper/200:06:162
2847191400,4ptp4l0-21swapper/123:30:171
2847191400,4ptp4l0-21swapper/123:00:151
2847191400,4ptp4l0-21swapper/019:10:010
2847191400,3ptp4l9884-21meminfo20:45:231
2847191400,3ptp4l27499-21df20:15:141
2847191400,3ptp4l1769-21apt-get21:40:041
2847191400,3ptp4l13171-21hddtemp_smartct00:20:171
2847191400,3ptp4l11539-21hddtemp_smartct19:40:181
29237993925,6cyclictest41-21ksoftirqd/323:25:463
29237993924,7cyclictest41-21ksoftirqd/320:35:283
29237993923,7cyclictest41-21ksoftirqd/319:30:243
2923699394,3cyclictest121rcu_preempt23:50:282
29236993924,5cyclictest33-21ksoftirqd/220:57:132
2923699392,3cyclictest121rcu_preempt20:00:242
29236993919,4cyclictest33-21ksoftirqd/219:50:032
2923499391,6cyclictest121rcu_preempt00:25:030
29234993911,6cyclictest9-21ksoftirqd/021:30:170
2847191390,5ptp4l0-21swapper/322:24:553
2847191390,5ptp4l0-21swapper/321:32:323
2847191390,5ptp4l0-21swapper/220:50:262
2847191390,4ptp4l6417-21/usr/sbin/munin22:55:261
2847191390,4ptp4l4230-21apt-get20:35:142
2847191390,4ptp4l32757-21/usr/sbin/munin22:45:121
2847191390,4ptp4l26614-21/usr/sbin/munin20:10:291
2847191390,4ptp4l0-21swapper/323:37:323
2847191390,4ptp4l0-21swapper/323:20:213
2847191390,4ptp4l0-21swapper/322:58:193
2847191390,4ptp4l0-21swapper/322:25:163
2847191390,4ptp4l0-21swapper/322:15:013
2847191390,4ptp4l0-21swapper/321:23:043
2847191390,4ptp4l0-21swapper/300:30:303
2847191390,4ptp4l0-21swapper/223:46:192
2847191390,4ptp4l0-21swapper/222:26:422
2847191390,4ptp4l0-21swapper/222:10:502
2847191390,4ptp4l0-21swapper/222:05:132
2847191390,4ptp4l0-21swapper/221:57:312
2847191390,4ptp4l0-21swapper/221:43:512
2847191390,4ptp4l0-21swapper/221:25:592
2847191390,4ptp4l0-21swapper/221:12:352
2847191390,4ptp4l0-21swapper/221:08:132
2847191390,4ptp4l0-21swapper/220:40:442
2847191390,4ptp4l0-21swapper/220:14:382
2847191390,4ptp4l0-21swapper/220:07:112
2847191390,4ptp4l0-21swapper/200:17:502
2847191390,4ptp4l0-21swapper/200:01:132
2847191390,4ptp4l0-21swapper/123:40:141
2847191390,4ptp4l0-21swapper/121:46:581
2847191390,4ptp4l0-21swapper/121:22:241
2847191390,4ptp4l0-21swapper/120:20:141
2847191390,4ptp4l0-21swapper/100:29:491
2847191390,3ptp4l3221-21/usr/sbin/munin22:50:221
2847191390,3ptp4l31952-21apt-get20:25:142
2847191390,3ptp4l29382-21/usr/sbin/munin19:10:151
2847191390,3ptp4l2468-21ls23:55:310
2847191390,3ptp4l16313-21hddtemp_smartct21:00:191
2847191390,3ptp4l0-21swapper/122:10:221
2923799382,7cyclictest121rcu_preempt00:06:143
29237993823,7cyclictest41-21ksoftirqd/321:05:163
29237993823,6cyclictest41-21ksoftirqd/319:40:243
29237993822,7cyclictest41-21ksoftirqd/322:40:233
29237993822,7cyclictest41-21ksoftirqd/321:35:533
29237993822,7cyclictest41-21ksoftirqd/320:20:143
29237993822,6cyclictest41-21ksoftirqd/320:55:183
2923699383,3cyclictest121rcu_preempt23:10:302
2847191380,5ptp4l0-21swapper/319:50:173
2847191380,4ptp4l1918-21unixbench_multi22:45:273
2847191380,4ptp4l0-21swapper/322:14:193
2847191380,4ptp4l0-21swapper/322:07:543
2847191380,4ptp4l0-21swapper/321:52:583
2847191380,4ptp4l0-21swapper/321:26:553
2847191380,4ptp4l0-21swapper/321:15:163
2847191380,4ptp4l0-21swapper/320:19:353
2847191380,4ptp4l0-21swapper/320:05:163
2847191380,4ptp4l0-21swapper/320:00:373
2847191380,4ptp4l0-21swapper/223:20:292
2847191380,4ptp4l0-21swapper/200:22:102
2847191380,3ptp4l0-21swapper/319:47:243
2847191380,3ptp4l0-21swapper/119:55:261
29237993724,4cyclictest41-21ksoftirqd/323:00:283
2923799370,6cyclictest121rcu_preempt23:05:173
2847191370,3ptp4l0-21swapper/319:57:253
2847191370,3ptp4l0-21swapper/319:20:423
2847191360,4ptp4l10850-21awk19:39:593
2847191360,4ptp4l0-21swapper/320:48:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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