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2025-11-22 - 04:32
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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 Nov 22, 2025 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1544921660,5sleep22102799cyclictest20:05:202
639721400,7sleep02102599cyclictest20:55:200
5202740,4sleep00-21swapper/021:50:280
2847191730,5ptp4l0-21swapper/121:00:261
2847191700,3ptp4l9-21ksoftirqd/019:20:300
21025996412,15cyclictest4028-21kernelversion20:50:180
21027996130,6cyclictest33-21ksoftirqd/223:51:372
2102599615,11cyclictest31896-21ls20:40:190
2847191600,4ptp4l0-21swapper/022:10:140
21027996027,4cyclictest33-21ksoftirqd/222:20:002
2102599606,10cyclictest0-21swapper/023:20:190
2847191590,3ptp4l121rcu_preempt20:34:051
2847191580,4ptp4l0-21swapper/019:40:290
2847191580,3ptp4l0-21swapper/100:05:171
21027995829,7cyclictest33-21ksoftirqd/219:19:592
21027995829,4cyclictest33-21ksoftirqd/223:42:182
21027995829,4cyclictest33-21ksoftirqd/220:58:342
2102599586,11cyclictest3741-21wc23:10:000
2847191570,4ptp4l0-21swapper/121:25:301
2847191570,3ptp4l0-21swapper/022:55:320
21027995728,5cyclictest33-21ksoftirqd/222:56:292
21027995724,4cyclictest33-21ksoftirqd/222:22:192
2102599575,12cyclictest23015-21sed23:50:130
2847191560,3ptp4l0-21swapper/320:05:413
21027995627,4cyclictest33-21ksoftirqd/222:51:542
21027995626,4cyclictest33-21ksoftirqd/223:32:292
21027995626,4cyclictest33-21ksoftirqd/223:32:292
21027995626,4cyclictest33-21ksoftirqd/200:04:272
21027995623,8cyclictest33-21ksoftirqd/200:26:122
21027995614,11cyclictest33-21ksoftirqd/223:05:182
2847191550,4ptp4l0-21swapper/320:50:323
2847191550,3ptp4l0-21swapper/123:15:131
21027995525,4cyclictest33-21ksoftirqd/221:59:502
21027995525,4cyclictest33-21ksoftirqd/219:36:552
21027995523,5cyclictest33-21ksoftirqd/223:56:352
2847191540,4ptp4l0-21swapper/323:05:273
2847191540,4ptp4l0-21swapper/219:47:182
21027995425,5cyclictest33-21ksoftirqd/221:35:252
21027995423,5cyclictest33-21ksoftirqd/222:40:352
21027995421,4cyclictest33-21ksoftirqd/219:33:192
21027995420,3cyclictest33-21ksoftirqd/221:07:052
2102599546,11cyclictest17981-21ls20:10:200
2102599544,10cyclictest31627-21systemctl19:30:260
320512530,5sleep032053-21latency_hist00:10:010
2847191530,4ptp4l0-21swapper/223:23:002
2847191530,4ptp4l0-21swapper/122:13:471
2847191530,4ptp4l0-21swapper/121:48:421
2847191530,3ptp4l0-21swapper/121:51:161
2847191530,10ptp4l18674-21apt-get19:05:112
21027995327,3cyclictest33-21ksoftirqd/220:35:242
21027995324,6cyclictest33-21ksoftirqd/221:20:172
21027995323,4cyclictest33-21ksoftirqd/220:25:242
2102599536,10cyclictest15895-21fschecks_count23:35:160
2102599535,19cyclictest7671-21grep00:25:170
2847191520,4ptp4l0-21swapper/221:53:542
21027995223,6cyclictest33-21ksoftirqd/219:43:352
21027995223,5cyclictest33-21ksoftirqd/221:00:162
21027995222,3cyclictest33-21ksoftirqd/222:29:052
2847191510,4ptp4l0-21swapper/319:20:293
2847191510,3ptp4l0-21swapper/323:39:473
2847191510,3ptp4l0-21swapper/200:20:272
21027995136,12cyclictest33-21ksoftirqd/221:30:002
21027995123,5cyclictest33-21ksoftirqd/221:45:142
21027995120,4cyclictest33-21ksoftirqd/222:10:162
21027995120,16cyclictest33-21ksoftirqd/222:30:152
2102599515,11cyclictest14562-21timerandwakeup22:20:260
2102599515,10cyclictest0-21swapper/020:05:280
21025995115,33cyclictest27576-21meminfo21:40:190
98072500,5sleep30-21swapper/300:30:173
2847191500,5ptp4l0-21swapper/119:37:491
21027995026,7cyclictest33-21ksoftirqd/223:17:532
21027995023,3cyclictest33-21ksoftirqd/220:41:282
21027995022,6cyclictest33-21ksoftirqd/220:30:222
21027995022,3cyclictest33-21ksoftirqd/221:12:122
21027995021,6cyclictest33-21ksoftirqd/221:18:502
21027995020,5cyclictest33-21ksoftirqd/222:46:332
2102599505,14cyclictest15585-21df22:25:140
2847191490,7ptp4l19633-21meminfo19:05:181
2847191490,4ptp4l0-21swapper/200:19:032
2847191490,4ptp4l0-21swapper/021:05:120
2847191490,3ptp4l0-21swapper/322:55:203
21027994924,7cyclictest33-21ksoftirqd/200:30:422
21027994920,3cyclictest33-21ksoftirqd/219:55:252
2102599496,11cyclictest8442-21fschecks_time21:00:160
2847191480,4ptp4l0-21swapper/322:33:503
2847191480,4ptp4l0-21swapper/319:14:283
2847191480,3ptp4l0-21swapper/200:13:012
21027994821,6cyclictest33-21ksoftirqd/221:30:182
21027994815,4cyclictest33-21ksoftirqd/222:05:162
2102599484,10cyclictest0-21swapper/020:45:290
21027994736,4cyclictest33-21ksoftirqd/219:22:022
21027994719,7cyclictest33-21ksoftirqd/222:00:172
21027994719,7cyclictest33-21ksoftirqd/222:00:172
21027994719,4cyclictest33-21ksoftirqd/220:45:162
21027994718,6cyclictest33-21ksoftirqd/223:45:262
21027994717,5cyclictest33-21ksoftirqd/223:25:152
2102599476,7cyclictest22029-21apt-get22:39:230
2102599475,38cyclictest9387-21cpuspeed00:30:130
2847191460,5ptp4l0-21swapper/319:05:123
21027994636,3cyclictest33-21ksoftirqd/223:40:002
21027994623,4cyclictest33-21ksoftirqd/219:50:582
21027994618,6cyclictest33-21ksoftirqd/200:05:212
21027994617,5cyclictest33-21ksoftirqd/223:00:152
21027994614,8cyclictest33-21ksoftirqd/222:35:142
2102599467,5cyclictest2847191ptp4l00:21:290
2102599463,9cyclictest0-21swapper/020:35:210
2847191450,4ptp4l0-21swapper/023:00:170
2102799456,3cyclictest33-21ksoftirqd/220:10:232
21027994530,8cyclictest33-21ksoftirqd/219:10:292
21027994528,4cyclictest33-21ksoftirqd/221:43:282
21027994522,4cyclictest33-21ksoftirqd/220:53:352
2102599456,8cyclictest10935-21meminfo19:55:200
2102599456,14cyclictest27581-21iostat_ios22:50:210
2102599452,10cyclictest2847191ptp4l21:15:170
2847191440,6ptp4l3290-21users23:05:291
2847191440,4ptp4l0-21swapper/121:56:181
2847191440,3ptp4l0-21swapper/123:24:281
2847191440,3ptp4l0-21swapper/022:45:130
2847191440,1ptp4l0-21swapper/100:01:351
2102799444,2cyclictest33-21ksoftirqd/220:16:072
2102799444,2cyclictest33-21ksoftirqd/220:16:072
2102599445,9cyclictest27371-21ntpq20:30:220
2102599442,16cyclictest0-21swapper/000:35:240
2847191430,5ptp4l15869-21irqstats21:15:211
2847191430,4ptp4l7657-21ls23:15:250
2847191430,4ptp4l29702-21ntp_states20:35:251
2102799439,6cyclictest33-21ksoftirqd/220:20:242
2102599438,10cyclictest2849491getstats22:40:200
2102599437,33cyclictest0-21swapper/023:40:210
2847191420,9ptp4l0-21swapper/021:58:240
2847191420,5ptp4l6214-21/usr/sbin/munin23:15:223
2847191420,5ptp4l29235-21/usr/sbin/munin19:25:260
2847191420,5ptp4l13605-21meminfo21:10:201
2847191420,5ptp4l0-21swapper/020:20:310
2847191420,4ptp4l20148-21irqstats20:15:190
2847191420,4ptp4l20148-21irqstats20:15:190
2847191420,4ptp4l18005-21diskstats22:30:150
2847191420,4ptp4l13392-21df23:30:130
2847191420,4ptp4l13392-21df23:30:130
2847191420,4ptp4l10991-21df_inode22:15:140
2847191420,4ptp4l0-21swapper/100:11:471
2847191420,4ptp4l0-21swapper/019:09:490
2847191420,3ptp4l26829-21ntp_states19:20:251
2847191420,3ptp4l18840-21meminfo23:40:231
21027994232,2cyclictest33-21ksoftirqd/223:10:302
21027994210,4cyclictest33-21ksoftirqd/219:25:312
2102599425,7cyclictest29050-21users00:00:290
2102599424,11cyclictest0-21swapper/022:02:550
2102599424,11cyclictest0-21swapper/022:02:550
21025994212,19cyclictest25657-21/usr/sbin/munin21:35:280
2847191410,7ptp4l0-21swapper/321:46:143
2847191410,6ptp4l10563-21ps19:55:181
2847191410,5ptp4l22077-21hddtemp_smartct20:20:191
2847191410,5ptp4l0-21swapper/123:50:251
2847191410,5ptp4l0-21swapper/021:25:160
2847191410,4ptp4l7118-21df_inode00:25:131
2847191410,4ptp4l6913-21irqstats22:05:180
2847191410,4ptp4l5483-21apt-get20:55:123
2847191410,4ptp4l3117-21meminfo00:15:223
2847191410,4ptp4l27191-21iostat21:40:171
2847191410,4ptp4l22942-21memory21:30:221
2847191410,4ptp4l21908-21irqstats19:10:171
2847191410,4ptp4l12219-21iostat00:35:191
2847191410,4ptp4l0-21swapper/323:25:233
2847191410,4ptp4l0-21swapper/320:25:583
2847191410,4ptp4l0-21swapper/123:02:561
2847191410,4ptp4l0-21swapper/023:55:130
2847191410,3ptp4l9977-21apt-get19:55:123
2847191410,3ptp4l6573-21ls19:45:250
2847191410,3ptp4l31856-21meminfo20:40:181
2847191410,2ptp4l0-21swapper/123:34:361
2847191410,2ptp4l0-21swapper/123:34:361
2102799412,3cyclictest33-21ksoftirqd/220:00:302
21027994110,7cyclictest33-21ksoftirqd/200:35:162
2102699415,5cyclictest2847191ptp4l22:45:181
2847191400,5ptp4l22564-21ls19:10:250
2847191400,5ptp4l0-21swapper/300:10:273
2847191400,5ptp4l0-21swapper/122:00:241
2847191400,5ptp4l0-21swapper/122:00:241
2847191400,5ptp4l0-21swapper/021:20:240
2847191400,4ptp4l24160-21df20:25:140
2847191400,4ptp4l16967-21/usr/sbin/munin20:10:163
2847191400,4ptp4l11296-21meminfo21:05:203
2847191400,4ptp4l0-21swapper/323:20:213
2847191400,4ptp4l0-21swapper/322:19:063
2847191400,4ptp4l0-21swapper/320:15:213
2847191400,4ptp4l0-21swapper/320:15:213
2847191400,4ptp4l0-21swapper/123:57:171
2847191400,4ptp4l0-21swapper/122:16:401
2847191400,4ptp4l0-21swapper/120:50:131
2847191400,4ptp4l0-21swapper/021:10:140
2847191400,4ptp4l0-21swapper/020:00:190
2847191400,4ptp4l0-21swapper/000:16:260
2847191400,3ptp4l7210-21apt-get19:50:023
2847191400,3ptp4l5461-21diskstats19:45:141
2847191400,3ptp4l4243-21diskstats23:10:190
2847191400,3ptp4l3202-21iostat19:40:221
2847191400,3ptp4l2601-21hddtemp_smartct00:15:181
2847191400,3ptp4l24866-21iostat21:35:201
2847191400,3ptp4l23581-21df19:15:151
2847191400,3ptp4l22381-21apt-get22:40:133
2847191400,3ptp4l17057-21users22:25:281
2847191400,3ptp4l1108-21diskstats20:45:161
2847191400,3ptp4l0-21swapper/120:11:151
2847191400,3ptp4l0-21swapper/000:11:070
2847191390,5ptp4l0-21swapper/320:02:183
2847191390,4ptp4l0-21swapper/323:45:013
2847191390,4ptp4l0-21swapper/323:33:053
2847191390,4ptp4l0-21swapper/323:33:053
2847191390,4ptp4l0-21swapper/322:50:263
2847191390,4ptp4l0-21swapper/322:20:223
2847191390,4ptp4l0-21swapper/322:09:403
2847191390,4ptp4l0-21swapper/322:00:243
2847191390,4ptp4l0-21swapper/322:00:243
2847191390,4ptp4l0-21swapper/321:57:193
2847191390,4ptp4l0-21swapper/321:50:193
2847191390,4ptp4l0-21swapper/321:44:163
2847191390,4ptp4l0-21swapper/320:30:143
2847191390,4ptp4l0-21swapper/319:40:253
2847191390,4ptp4l0-21swapper/319:31:063
2847191390,4ptp4l0-21swapper/123:45:191
2847191390,4ptp4l0-21swapper/123:27:131
2847191390,4ptp4l0-21swapper/123:10:251
2847191390,4ptp4l0-21swapper/122:55:141
2847191390,4ptp4l0-21swapper/122:51:311
2847191390,4ptp4l0-21swapper/122:41:481
2847191390,4ptp4l0-21swapper/122:35:151
2847191390,4ptp4l0-21swapper/122:20:151
2847191390,4ptp4l0-21swapper/121:24:591
2847191390,4ptp4l0-21swapper/121:06:281
2847191390,4ptp4l0-21swapper/120:55:281
2847191390,4ptp4l0-21swapper/120:26:241
2847191390,4ptp4l0-21swapper/100:20:151
2847191390,4ptp4l0-21swapper/023:25:280
2847191390,4ptp4l0-21swapper/021:31:380
2847191390,4ptp4l0-21swapper/019:50:290
2847191390,4ptp4l0-21swapper/019:38:090
2847191390,4ptp4l0-21swapper/019:16:510
2847191390,3ptp4l6641-21iostat_ios22:05:181
2847191390,3ptp4l29453-21/usr/sbin/munin19:25:281
2847191390,3ptp4l0-21swapper/321:20:163
2847191390,3ptp4l0-21swapper/120:05:191
2847191390,3ptp4l0-21swapper/100:30:251
2847191390,3ptp4l0-21swapper/021:45:190
2102699390,8cyclictest13437-21ntp_states20:00:261
2847191380,4ptp4l0-21swapper/322:46:283
2847191380,4ptp4l0-21swapper/322:36:403
2847191380,4ptp4l0-21swapper/320:40:233
2847191380,4ptp4l0-21swapper/320:37:333
2847191380,4ptp4l0-21swapper/319:35:043
2847191380,4ptp4l0-21swapper/319:15:183
2847191380,4ptp4l0-21swapper/300:35:293
2847191380,4ptp4l0-21swapper/300:22:033
2847191380,4ptp4l0-21swapper/123:35:051
2847191380,4ptp4l0-21swapper/120:19:221
2847191380,4ptp4l0-21swapper/120:19:221
2847191380,4ptp4l0-21swapper/119:30:561
2847191380,3ptp4l0-21swapper/323:10:023
2847191380,3ptp4l0-21swapper/321:31:503
2847191380,3ptp4l0-21swapper/300:07:583
2847191380,3ptp4l0-21swapper/122:30:201
2847191380,3ptp4l0-21swapper/023:45:140
2847191370,4ptp4l0-21swapper/322:26:343
2847191370,4ptp4l0-21swapper/321:39:043
2847191370,4ptp4l0-21swapper/321:01:093
2847191370,4ptp4l0-21swapper/300:03:303
2847191370,3ptp4l0-21swapper/323:50:223
2847191370,3ptp4l0-21swapper/323:47:193
2847191370,3ptp4l0-21swapper/323:02:323
2847191370,3ptp4l0-21swapper/321:15:513
2847191370,3ptp4l0-21swapper/321:10:583
2847191370,3ptp4l0-21swapper/320:20:173
2847191370,3ptp4l0-21swapper/319:27:213
2847191370,3ptp4l0-21swapper/300:25:473
2847191370,3ptp4l0-21swapper/119:51:481
2847191360,4ptp4l0-21swapper/321:27:543
2847191360,3ptp4l0-21swapper/320:45:273
2847191350,3ptp4l0-21swapper/323:58:063
2847191350,3ptp4l0-21swapper/322:10:403
2847191350,3ptp4l0-21swapper/319:46:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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