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2026-08-12 - 06:07
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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 rackdslot3.osadl.org (updated Wed Aug 12, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
223872206172,22sleep10-21swapper/119:06:181
225682205172,22sleep20-21swapper/219:08:402
139491204169,23phc2sys0-21swapper/319:09:193
223322201167,23sleep00-21swapper/019:05:370
139391770,1ptp4l401ktimersoftd/322:05:243
139391670,1ptp4l401ktimersoftd/322:41:043
139391670,1ptp4l401ktimersoftd/319:21:163
22965996429,3cyclictest33-21ksoftirqd/221:30:002
22965996132,8cyclictest33-21ksoftirqd/222:55:002
22965996126,5cyclictest33-21ksoftirqd/222:50:002
22965995922,7cyclictest33-21ksoftirqd/223:05:262
22965995830,7cyclictest33-21ksoftirqd/220:55:242
22965995829,7cyclictest33-21ksoftirqd/223:25:192
139391580,1ptp4l401ktimersoftd/320:15:243
139391580,1ptp4l391rcuc/322:15:223
22965995725,4cyclictest33-21ksoftirqd/219:30:242
22965995724,4cyclictest33-21ksoftirqd/220:20:002
22965995723,4cyclictest33-21ksoftirqd/223:55:202
180712570,1sleep00-21swapper/023:30:010
129152570,6sleep09-21ksoftirqd/000:25:170
22965995633,3cyclictest33-21ksoftirqd/221:55:262
22965995629,7cyclictest33-21ksoftirqd/219:25:282
22965995629,7cyclictest33-21ksoftirqd/219:25:272
22965995629,3cyclictest33-21ksoftirqd/220:10:262
22965995628,6cyclictest33-21ksoftirqd/223:40:252
22965995625,4cyclictest33-21ksoftirqd/223:35:272
22965995621,6cyclictest33-21ksoftirqd/220:25:252
22965995534,3cyclictest33-21ksoftirqd/200:20:262
22965995529,6cyclictest33-21ksoftirqd/221:40:272
22965995527,7cyclictest33-21ksoftirqd/223:20:012
22965995526,3cyclictest33-21ksoftirqd/220:40:232
22965995523,7cyclictest33-21ksoftirqd/222:40:002
22965995522,6cyclictest33-21ksoftirqd/220:30:142
22965995521,6cyclictest33-21ksoftirqd/222:05:192
22965995520,6cyclictest33-21ksoftirqd/222:25:252
22965995519,6cyclictest33-21ksoftirqd/222:10:152
22965995427,7cyclictest33-21ksoftirqd/221:05:152
22965995427,7cyclictest33-21ksoftirqd/219:50:112
22965995427,6cyclictest33-21ksoftirqd/221:25:232
22965995424,5cyclictest33-21ksoftirqd/221:35:002
22965995424,4cyclictest33-21ksoftirqd/222:40:122
22965995423,4cyclictest33-21ksoftirqd/200:15:282
22965995422,8cyclictest33-21ksoftirqd/220:20:272
22965995421,7cyclictest33-21ksoftirqd/221:00:202
22965995421,4cyclictest33-21ksoftirqd/219:10:152
22965995328,6cyclictest33-21ksoftirqd/222:55:272
22965995327,7cyclictest33-21ksoftirqd/220:50:142
22965995326,7cyclictest33-21ksoftirqd/223:50:002
22965995325,7cyclictest33-21ksoftirqd/219:15:242
22965995324,4cyclictest33-21ksoftirqd/223:50:152
22965995322,4cyclictest33-21ksoftirqd/219:35:152
22965995321,7cyclictest33-21ksoftirqd/222:20:272
22965995320,5cyclictest33-21ksoftirqd/223:30:312
22965995319,6cyclictest33-21ksoftirqd/219:55:142
22965995226,6cyclictest33-21ksoftirqd/221:50:152
22965995225,8cyclictest33-21ksoftirqd/200:30:172
22965995225,7cyclictest33-21ksoftirqd/223:20:182
22965995225,7cyclictest33-21ksoftirqd/221:20:282
22965995225,7cyclictest33-21ksoftirqd/200:25:152
22965995219,4cyclictest33-21ksoftirqd/200:35:192
22965995215,5cyclictest33-21ksoftirqd/221:10:152
2296399528,6cyclictest19669-21grep21:15:240
22963995211,5cyclictest9-21ksoftirqd/023:51:550
22963995211,5cyclictest9-21ksoftirqd/019:55:220
221382520,1sleep30-21swapper/321:20:273
22965995125,7cyclictest33-21ksoftirqd/220:00:252
22965995123,7cyclictest33-21ksoftirqd/220:05:222
22965995123,6cyclictest33-21ksoftirqd/221:35:252
22965995121,7cyclictest33-21ksoftirqd/200:15:002
22965995119,5cyclictest33-21ksoftirqd/200:00:192
22965995117,5cyclictest33-21ksoftirqd/222:30:152
22963995112,5cyclictest9-21ksoftirqd/022:53:140
22963995110,7cyclictest9-21ksoftirqd/000:33:080
22965995023,7cyclictest33-21ksoftirqd/219:20:162
22965995019,3cyclictest33-21ksoftirqd/219:40:202
22965995015,4cyclictest33-21ksoftirqd/223:00:152
22965995014,5cyclictest33-21ksoftirqd/221:45:132
2296399504,11cyclictest1899-21run-parts19:30:240
22963995010,6cyclictest9-21ksoftirqd/023:37:560
22963995010,5cyclictest9-21ksoftirqd/020:48:020
94392490,4sleep0101ktimersoftd/022:00:560
248112490,3sleep00-21swapper/021:25:290
248112490,3sleep00-21swapper/021:25:290
22965994927,11cyclictest33-21ksoftirqd/200:05:162
22965994921,4cyclictest33-21ksoftirqd/219:50:002
2296399493,10cyclictest517-21timedrift20:35:290
2296399491,11cyclictest25463-21/usr/sbin/munin20:20:220
22963994910,5cyclictest9-21ksoftirqd/020:34:140
22965994823,7cyclictest33-21ksoftirqd/222:00:242
22965994823,6cyclictest33-21ksoftirqd/220:35:282
2296399483,10cyclictest23393-21/usr/sbin/munin19:10:150
2296399480,11cyclictest15191-21df22:15:160
22965994718,5cyclictest33-21ksoftirqd/221:15:142
2296499473,6cyclictest207-21systemd-journal21:10:461
2296399470,11cyclictest5951-21cut21:55:190
241762460,2sleep30-21swapper/323:40:233
2296699464,39cyclictest3636-21turbostat20:45:013
22964994640,3cyclictest25211-21cron23:45:001
2296499461,6cyclictest25-21ksoftirqd/119:40:191
2296399462,11cyclictest6087-21/usr/sbin/munin00:10:180
2296399461,9cyclictest19288-21/usr/sbin/munin23:30:240
22966994540,3cyclictest1317-21runrttasks22:54:433
22965994520,7cyclictest33-21ksoftirqd/223:10:212
22965994520,7cyclictest33-21ksoftirqd/222:15:272
2296499450,6cyclictest241ktimersoftd/123:50:171
2296399456,5cyclictest9-21ksoftirqd/000:16:230
2296399452,12cyclictest10938-21sed22:05:180
2296599444,2cyclictest121rcu_preempt20:45:242
139391440,0ptp4l401ktimersoftd/323:21:123
2296499436,6cyclictest25-21ksoftirqd/123:30:281
2296499436,5cyclictest25-21ksoftirqd/119:15:231
2296499432,6cyclictest28731-21if_err_enp1s021:35:181
2296399432,11cyclictest10571-21taskset20:58:030
2296399431,11cyclictest22771-21irqrtprio20:15:190
22963994310,5cyclictest9-21ksoftirqd/023:20:010
22963994310,5cyclictest9-21ksoftirqd/000:38:570
139391430,0ptp4l401ktimersoftd/300:09:413
2296499422,7cyclictest25-21ksoftirqd/120:50:201
2296399428,5cyclictest9-21ksoftirqd/023:09:420
2296399427,5cyclictest9-21ksoftirqd/000:04:360
2296399420,11cyclictest26139-21cut23:45:200
2296399420,10cyclictest3158-21unixbench_multi20:40:250
2296499414,8cyclictest25-21ksoftirqd/122:50:181
2296499412,5cyclictest25-21ksoftirqd/122:05:271
2296499410,2cyclictest121rcu_preempt20:45:221
2296399411,18cyclictest14921-21ssh21:05:280
22963994110,5cyclictest9-21ksoftirqd/022:28:230
139391410,1ptp4l401ktimersoftd/320:28:313
139391410,0ptp4l401ktimersoftd/321:49:543
57898400,3rtkit-daemon19601-21apt-get20:10:143
2296499401,6cyclictest207-21systemd-journal00:31:251
139391400,32ptp4l0-21swapper/319:10:013
139391400,2ptp4l401ktimersoftd/322:56:423
2296499392,5cyclictest25-21ksoftirqd/121:40:241
2296499392,11cyclictest25-21ksoftirqd/122:35:041
2296499391,6cyclictest25-21ksoftirqd/123:25:151
2296499390,2cyclictest121rcu_preempt23:05:211
2296499390,1cyclictest121rcu_preempt23:20:131
2296399396,3cyclictest9-21ksoftirqd/021:24:310
2296499382,5cyclictest25-21ksoftirqd/100:15:231
2296499381,5cyclictest25-21ksoftirqd/123:10:251
2296499381,5cyclictest25-21ksoftirqd/120:09:181
2296499380,2cyclictest121rcu_preempt22:45:161
2296499380,2cyclictest121rcu_preempt22:30:161
2296499380,2cyclictest121rcu_preempt19:10:151
139391380,0ptp4l401ktimersoftd/321:55:213
139391380,0ptp4l401ktimersoftd/321:10:133
22964993732,3cyclictest25-21ksoftirqd/121:34:441
2296499372,5cyclictest25-21ksoftirqd/119:58:011
2296499371,9cyclictest3692-21sed21:50:161
2296499371,5cyclictest25-21ksoftirqd/122:55:191
2296499371,5cyclictest25-21ksoftirqd/122:10:251
2296499371,5cyclictest25-21ksoftirqd/121:15:121
2296499371,5cyclictest25-21ksoftirqd/119:51:571
2296499370,2cyclictest121rcu_preempt23:55:301
2296399374,5cyclictest9-21ksoftirqd/019:27:170
2296399374,5cyclictest9-21ksoftirqd/019:27:170
2296399370,12cyclictest8574-21apt-get23:10:130
22964993631,3cyclictest25-21ksoftirqd/119:34:121
22964993630,3cyclictest30105-21date19:25:001
22964993629,4cyclictest25-21ksoftirqd/120:40:131
2296499362,5cyclictest25-21ksoftirqd/120:12:001
2296499361,6cyclictest25-21ksoftirqd/100:09:031
2296499361,5cyclictest25-21ksoftirqd/100:35:261
2296399364,4cyclictest9-21ksoftirqd/022:33:510
22966993529,4cyclictest41-21ksoftirqd/321:42:493
22966993529,4cyclictest41-21ksoftirqd/321:08:183
22966993529,4cyclictest41-21ksoftirqd/319:43:073
2296499354,3cyclictest25-21ksoftirqd/120:25:171
22964993529,4cyclictest25-21ksoftirqd/119:29:411
22964993529,4cyclictest25-21ksoftirqd/119:29:411
22964993529,3cyclictest31224-21turbostat.cron20:34:591
2296499352,6cyclictest25-21ksoftirqd/123:35:161
2296499352,6cyclictest25-21ksoftirqd/121:20:291
2296499352,6cyclictest25-21ksoftirqd/100:22:031
2296499352,5cyclictest25-21ksoftirqd/122:29:191
2296499350,5cyclictest25-21ksoftirqd/119:45:201
2296499350,2cyclictest121rcu_preempt00:00:161
2296499350,1cyclictest121rcu_preempt20:15:221
2296399356,5cyclictest9-21ksoftirqd/020:50:260
22963993529,4cyclictest9-21ksoftirqd/022:48:480
22963993529,4cyclictest9-21ksoftirqd/022:10:490
22963993529,4cyclictest9-21ksoftirqd/020:13:240
139391350,0ptp4l401ktimersoftd/323:01:213
22966993429,3cyclictest41-21ksoftirqd/320:23:103
22966993428,4cyclictest41-21ksoftirqd/323:35:543
22966993428,4cyclictest41-21ksoftirqd/321:37:003
22966993428,4cyclictest41-21ksoftirqd/321:31:503
22966993428,4cyclictest41-21ksoftirqd/300:28:563
2296499348,4cyclictest25-21ksoftirqd/100:25:261
22964993428,4cyclictest25-21ksoftirqd/122:41:521
22964993428,4cyclictest25-21ksoftirqd/122:21:551
22964993428,4cyclictest25-21ksoftirqd/122:16:131
22964993428,4cyclictest25-21ksoftirqd/121:46:231
2296499342,5cyclictest25-21ksoftirqd/123:15:551
2296499341,6cyclictest25-21ksoftirqd/121:55:191
2296399346,5cyclictest9-21ksoftirqd/021:47:340
22963993428,4cyclictest9-21ksoftirqd/021:11:090
22963993428,4cyclictest9-21ksoftirqd/020:27:480
22963993428,4cyclictest9-21ksoftirqd/000:08:190
22966993328,3cyclictest41-21ksoftirqd/322:23:093
22966993327,4cyclictest41-21ksoftirqd/323:51:233
22966993327,4cyclictest41-21ksoftirqd/320:58:323
22966993327,4cyclictest41-21ksoftirqd/320:07:303
22966993327,4cyclictest41-21ksoftirqd/320:01:203
22966993327,4cyclictest41-21ksoftirqd/319:33:403
22966993327,4cyclictest41-21ksoftirqd/300:03:543
22966993326,4cyclictest41-21ksoftirqd/300:10:593
2296499338,6cyclictest25-21ksoftirqd/122:00:281
2296499333,2cyclictest25-21ksoftirqd/120:55:281
22964993327,4cyclictest25-21ksoftirqd/123:02:581
22964993327,4cyclictest25-21ksoftirqd/121:04:321
22963993328,3cyclictest9-21ksoftirqd/023:58:320
22963993327,4cyclictest9-21ksoftirqd/022:40:590
22963993327,4cyclictest9-21ksoftirqd/019:18:240
22963993317,6cyclictest9-21ksoftirqd/022:20:110
139391330,9ptp4l401ktimersoftd/322:10:163
22966993227,3cyclictest41-21ksoftirqd/322:46:243
22966993227,3cyclictest41-21ksoftirqd/321:16:063
22966993227,3cyclictest41-21ksoftirqd/300:33:593
22966993226,4cyclictest41-21ksoftirqd/323:13:393
22966993226,4cyclictest41-21ksoftirqd/320:37:463
22966993226,4cyclictest41-21ksoftirqd/319:46:273
22964993226,3cyclictest25-21ksoftirqd/121:25:281
22964993226,3cyclictest25-21ksoftirqd/121:25:281
22964993225,5cyclictest25-21ksoftirqd/100:12:271
2296499320,4cyclictest25-21ksoftirqd/120:35:201
2296399322,6cyclictest9-21ksoftirqd/022:59:270
22963993226,4cyclictest9-21ksoftirqd/023:40:250
22963993226,4cyclictest9-21ksoftirqd/023:24:320
22963993226,4cyclictest9-21ksoftirqd/022:36:380
22963993226,4cyclictest9-21ksoftirqd/021:53:250
22963993226,4cyclictest9-21ksoftirqd/019:48:090
22963993225,4cyclictest9-21ksoftirqd/021:36:360
22966993126,3cyclictest41-21ksoftirqd/323:30:113
22966993126,3cyclictest41-21ksoftirqd/323:29:363
22966993126,3cyclictest41-21ksoftirqd/322:27:293
22966993126,3cyclictest41-21ksoftirqd/321:51:243
22966993125,4cyclictest41-21ksoftirqd/319:57:233
22966993125,4cyclictest41-21ksoftirqd/300:22:353
22964993124,4cyclictest25-21ksoftirqd/121:06:371
2296399314,4cyclictest9-21ksoftirqd/019:41:110
22963993125,4cyclictest9-21ksoftirqd/019:50:540
139391310,0ptp4l401ktimersoftd/323:05:163
139391310,0ptp4l401ktimersoftd/319:50:183
139391310,0ptp4l401ktimersoftd/319:38:413
139391310,0ptp4l401ktimersoftd/319:25:173
139391310,0ptp4l401ktimersoftd/319:25:173
139391310,0ptp4l401ktimersoftd/300:39:033
22966993025,3cyclictest41-21ksoftirqd/321:27:053
22966993025,3cyclictest41-21ksoftirqd/321:27:053
22966993024,4cyclictest41-21ksoftirqd/323:15:353
2296499301,2cyclictest25-21ksoftirqd/120:20:211
2296499301,2cyclictest25-21ksoftirqd/120:00:301
22963993023,4cyclictest9-21ksoftirqd/000:22:250
139391300,0ptp4l401ktimersoftd/322:35:253
139391300,0ptp4l401ktimersoftd/320:54:553
22966992924,3cyclictest41-21ksoftirqd/323:59:023
22966992923,4cyclictest41-21ksoftirqd/322:32:403
2296499294,8cyclictest25-21ksoftirqd/119:36:171
22963992924,3cyclictest9-21ksoftirqd/019:21:010
22963992923,4cyclictest9-21ksoftirqd/021:40:540
139391290,0ptp4l401ktimersoftd/320:32:583
139391290,0ptp4l401ktimersoftd/300:19:533
22966992823,3cyclictest41-21ksoftirqd/323:47:503
2296499281,2cyclictest25-21ksoftirqd/123:45:171
22963992823,3cyclictest9-21ksoftirqd/023:02:440
22963992823,3cyclictest9-21ksoftirqd/020:05:000
22963992823,3cyclictest9-21ksoftirqd/019:35:110
139391280,9ptp4l0-21swapper/319:15:143
139391280,0ptp4l401ktimersoftd/320:45:273
22963992721,4cyclictest9-21ksoftirqd/021:30:060
22966992621,3cyclictest41-21ksoftirqd/321:00:043
22966992620,4cyclictest41-21ksoftirqd/322:04:113
22963992620,4cyclictest9-21ksoftirqd/020:06:580
22963992519,4cyclictest9-21ksoftirqd/021:01:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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