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2025-09-19 - 05:23
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Fri Sep 19, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1164027158,8sleep10-21swapper/119:06:191
315252700,0sleep00-21swapper/021:16:550
1162427057,8sleep00-21swapper/019:06:080
95052580,1sleep10-21swapper/120:22:341
11906994210,31cyclictest0-21swapper/022:43:370
11907993533,1cyclictest24-21ksoftirqd/123:03:341
11906993315,17cyclictest97950irq/108-eth1-tx22:56:000
11907993124,5cyclictest24-21ksoftirqd/121:22:051
11907993010,2cyclictest0-21swapper/123:58:361
1190799295,3cyclictest91rcu_preempt21:35:311
1190799293,1cyclictest91rcu_preempt22:52:331
11907992929,0cyclictest0-21swapper/121:28:031
11907992928,1cyclictest24-21ksoftirqd/123:37:491
11907992925,2cyclictest231ktimersoftd/122:05:251
1190799291,4cyclictest15793-21apache_volume19:17:281
1190799290,3cyclictest0-21swapper/120:47:321
11906992923,5cyclictest25605-21apache200:25:580
11906992810,1cyclictest0-21swapper/023:47:260
11907992726,0cyclictest0-21swapper/122:33:591
11907992725,1cyclictest24-21ksoftirqd/123:32:281
11907992725,1cyclictest24-21ksoftirqd/121:23:311
11907992715,3cyclictest91rcu_preempt21:02:271
11906992710,9cyclictest0-21swapper/022:02:070
11906992710,9cyclictest0-21swapper/022:02:070
11906992710,12cyclictest0-21swapper/022:27:490
1190799261,8cyclictest91rcu_preempt23:31:451
11907992611,1cyclictest91rcu_preempt22:51:001
1190699262,23cyclictest0-21swapper/021:47:030
726622510,2sleep00-21swapper/023:44:580
1190799254,11cyclictest91rcu_preempt22:10:521
11907992519,3cyclictest24-21ksoftirqd/122:25:581
1190799250,24cyclictest0-21swapper/122:18:471
11906992510,8cyclictest0-21swapper/021:21:430
1190799247,1cyclictest91rcu_preempt00:22:521
11907992424,0cyclictest24-21ksoftirqd/100:07:291
11907992422,1cyclictest0-21swapper/122:30:181
11907992421,2cyclictest24-21ksoftirqd/100:32:591
1190799240,4cyclictest0-21swapper/123:44:371
11906992417,5cyclictest25594-21apache200:31:090
2522322310,1sleep00-21swapper/023:23:510
1190799236,10cyclictest0-21swapper/121:12:311
11907992323,0cyclictest24-21ksoftirqd/121:47:121
11907992315,3cyclictest24-21ksoftirqd/120:37:351
11907992313,4cyclictest817-21apache221:39:131
11907992310,1cyclictest0-21swapper/100:31:461
1190799230,2cyclictest0-21swapper/123:00:541
1190699232,3cyclictest0-21swapper/022:51:100
11906992321,1cyclictest817-21apache221:49:080
11906992310,1cyclictest0-21swapper/021:52:220
11906992310,1cyclictest0-21swapper/000:04:470
1190799229,5cyclictest636-21nscd21:57:241
1190799229,5cyclictest636-21nscd21:57:241
1190799225,10cyclictest0-21swapper/119:57:251
1190799222,1cyclictest91rcu_preempt23:15:211
11907992221,1cyclictest8503-21/usr/sbin/munin23:47:261
11907992221,0cyclictest24-21ksoftirqd/123:09:061
11907992220,1cyclictest21078-21irqstats20:57:241
11907992218,3cyclictest24-21ksoftirqd/119:48:071
1190799221,2cyclictest91rcu_preempt20:03:421
1190799221,1cyclictest91rcu_preempt21:56:341
1190799221,16cyclictest24215-21diskmemload00:13:281
1190799221,11cyclictest11849-21apache_accesses23:52:271
1190699229,9cyclictest0-21swapper/021:23:390
11906992219,2cyclictest81ktimersoftd/023:08:430
11906992210,4cyclictest0-21swapper/023:58:450
11906992210,3cyclictest0-21swapper/022:37:270
1190699220,13cyclictest0-21swapper/022:12:310
1190699220,10cyclictest0-21swapper/022:22:300
11907992119,1cyclictest24208-21ssh22:37:181
11907992117,2cyclictest25594-21apache220:07:321
11907992114,5cyclictest11904-21cyclictest19:22:351
1190799211,18cyclictest0-21swapper/123:17:341
1190799210,4cyclictest0-21swapper/100:06:161
11906992119,1cyclictest25594-21apache200:33:590
11906992115,1cyclictest15785-21/usr/sbin/munin19:17:320
11906992110,5cyclictest0-21swapper/022:02:240
11906992110,4cyclictest0-21swapper/023:12:250
11906992110,4cyclictest0-21swapper/020:32:310
11906992110,3cyclictest0-21swapper/021:07:170
1190799205,6cyclictest24215-21diskmemload00:17:281
1190799203,1cyclictest91rcu_preempt22:42:221
1190799202,12cyclictest0-21swapper/121:47:341
11907992016,4cyclictest24-21ksoftirqd/121:07:341
11907992016,2cyclictest231ktimersoftd/122:12:251
11906992020,0cyclictest0-21swapper/020:08:190
11906992019,1cyclictest25594-21apache223:41:080
11906992010,4cyclictest0-21swapper/022:19:240
11906992010,3cyclictest0-21swapper/019:47:300
11906992010,10cyclictest0-21swapper/022:10:500
3175421910,0sleep00-21swapper/000:21:260
1190821910,0sleep10-21swapper/119:07:141
1190799192,9cyclictest0-21swapper/120:42:261
1190799192,9cyclictest0-21swapper/119:37:351
11907991910,3cyclictest0-21swapper/119:52:271
11907991910,3cyclictest0-21swapper/119:33:441
1190699196,8cyclictest0-21swapper/023:32:370
1190699194,9cyclictest0-21swapper/000:07:250
1190699193,8cyclictest0-21swapper/020:17:310
1190699193,12cyclictest0-21swapper/020:57:240
11906991914,3cyclictest81ktimersoftd/000:15:460
11906991910,6cyclictest0-21swapper/023:20:330
11906991910,5cyclictest0-21swapper/021:33:350
2683421810,0sleep10-21swapper/119:43:471
233602180,0sleep10-21swapper/123:22:171
2023021810,0sleep10-21swapper/120:55:582
11907991816,1cyclictest24-21ksoftirqd/120:15:541
11907991815,1cyclictest24-21ksoftirqd/119:27:521
11907991810,5cyclictest0-21swapper/120:32:381
1190699181,9cyclictest0-21swapper/023:27:290
11906991817,1cyclictest0-21swapper/019:54:440
1190699181,2cyclictest0-21swapper/023:06:230
11906991811,5cyclictest25605-21apache222:58:390
11906991810,7cyclictest0-21swapper/021:27:590
11906991810,6cyclictest0-21swapper/019:30:200
11906991810,3cyclictest0-21swapper/020:37:320
11906991810,3cyclictest0-21swapper/019:14:000
11906991810,1cyclictest0-21swapper/019:07:330
1190799172,11cyclictest0-21swapper/120:17:281
1190699174,7cyclictest0-21swapper/022:32:260
11906991710,7cyclictest0-21swapper/019:42:190
11906991710,4cyclictest0-21swapper/020:42:240
11906991710,3cyclictest0-21swapper/021:37:340
11906991710,3cyclictest0-21swapper/020:05:420
11906991710,2cyclictest0-21swapper/019:22:180
1190799163,12cyclictest14834-21mailstats19:12:341
1190699164,6cyclictest0-21swapper/023:52:280
11906991610,0cyclictest0-21swapper/019:37:180
11906991610,0cyclictest0-21swapper/019:32:380
2011021510,0sleep00-21swapper/020:54:430
11906991511,1cyclictest1111-21runrttasks20:28:360
11906991510,2cyclictest0-21swapper/020:17:130
11906991510,2cyclictest0-21swapper/019:57:330
11906991510,1cyclictest0-21swapper/021:03:170
11906991510,1cyclictest0-21swapper/020:47:250
11906991510,0cyclictest0-21swapper/020:27:080
11907991410,2cyclictest0-21swapper/120:27:251
_nanosleep11:13:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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