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2026-08-06 - 17:29
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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 Thu Aug 06, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
133627550,21sleep00-21swapper/007:06:380
123826947,17sleep10-21swapper/107:05:371
137982640,1sleep00-21swapper/010:29:370
1671993814,5cyclictest91rcu_preempt09:48:321
1671993812,0cyclictest7606-21hddtemp_smartct11:48:261
1671993712,3cyclictest91rcu_preempt10:03:511
1671993710,3cyclictest24-21ksoftirqd/109:07:121
1671993612,3cyclictest91rcu_preempt10:14:151
1671993534,0cyclictest24-21ksoftirqd/111:28:331
1671993530,3cyclictest24-21ksoftirqd/109:23:311
1671993521,7cyclictest24-21ksoftirqd/109:16:071
167199349,2cyclictest91rcu_preempt09:12:211
167199348,3cyclictest91rcu_preempt09:43:271
1671993431,1cyclictest24-21ksoftirqd/110:11:491
1671993425,4cyclictest91rcu_preempt09:55:321
1671993413,4cyclictest91rcu_preempt08:58:291
1671993410,1cyclictest91rcu_preempt11:37:391
167199337,1cyclictest91rcu_preempt07:46:121
1671993333,0cyclictest24-21ksoftirqd/110:23:311
1671993312,2cyclictest91rcu_preempt08:43:141
1671993222,4cyclictest91rcu_preempt11:21:521
1671993213,2cyclictest91rcu_preempt11:10:291
1671993211,11cyclictest91rcu_preempt10:37:061
1671993127,3cyclictest24-21ksoftirqd/108:48:301
1671993124,5cyclictest24-21ksoftirqd/108:26:121
167199308,1cyclictest24-21ksoftirqd/111:17:171
1671993026,2cyclictest24-21ksoftirqd/107:23:271
1671993026,2cyclictest24097-21/usr/sbin/munin09:18:281
1671993023,3cyclictest91rcu_preempt12:13:211
1671993017,7cyclictest24-21ksoftirqd/111:57:321
1671993015,5cyclictest91rcu_preempt10:57:231
1671992921,3cyclictest15549-21diskmemload09:31:111
1670992929,0cyclictest0-21swapper/011:31:350
1670992910,9cyclictest0-21swapper/009:19:050
167199289,3cyclictest91rcu_preempt10:51:021
1671992825,2cyclictest2463-21ntp_states07:08:301
1671992824,3cyclictest4150-21awk07:13:281
1671992820,3cyclictest25195-21cstates08:08:251
1671992814,2cyclictest24-21ksoftirqd/111:40:471
1671992813,1cyclictest91rcu_preempt12:24:421
1670992810,0cyclictest0-21swapper/007:18:310
167099280,26cyclictest16109-21users11:58:340
167199277,2cyclictest91rcu_preempt09:34:541
1671992724,2cyclictest25745-21ssh12:13:081
1671992724,2cyclictest22927-21latency_hist10:43:131
1671992724,2cyclictest14589-21ls07:38:321
1671992724,2cyclictest0-21swapper/107:18:321
1671992723,3cyclictest5906-21munin-run08:43:131
1671992723,3cyclictest14089-21taskset10:30:141
1671992714,3cyclictest24-21ksoftirqd/109:41:211
1671992712,11cyclictest24-21ksoftirqd/109:59:371
1670992725,1cyclictest0-21swapper/010:25:280
1670992710,9cyclictest0-21swapper/011:43:500
167099270,26cyclictest0-21swapper/009:08:270
167199268,1cyclictest91rcu_preempt07:50:121
1671992623,3cyclictest23785-21ls10:43:291
1671992622,3cyclictest6081-21ls12:28:321
1671992622,3cyclictest4516-21python11:43:311
1671992622,3cyclictest15549-21diskmemload12:07:271
1671992619,4cyclictest24-21ksoftirqd/108:57:561
167199261,24cyclictest0-21swapper/112:37:251
167199257,2cyclictest15139-21ssh11:58:271
1671992522,2cyclictest4671-21http_loadtime10:18:261
1671992522,2cyclictest31015-21grep12:18:321
1671992522,2cyclictest22291-21runrttasks11:23:481
1671992522,2cyclictest0-21swapper/108:33:301
1671992521,3cyclictest10558-21sed07:28:321
1671992519,5cyclictest13343-21turbostat07:38:131
1671992519,4cyclictest24-21ksoftirqd/111:07:261
1671992515,4cyclictest231ktimersoftd/110:58:241
1671992514,7cyclictest231ktimersoftd/107:58:251
1670992510,5cyclictest0-21swapper/012:09:210
167099250,1cyclictest2476-21ssh11:41:370
167199247,3cyclictest91rcu_preempt08:03:241
1671992421,2cyclictest1477-21sed08:28:321
1671992421,2cyclictest0-21swapper/108:22:031
1671992421,2cyclictest0-21swapper/107:55:391
1671992420,2cyclictest27026-21cstates08:13:251
167099241,21cyclictest0-21swapper/010:38:320
1670992410,7cyclictest0-21swapper/008:23:300
1670992323,0cyclictest0-21swapper/007:50:060
1670992317,6cyclictest11494-21apache211:12:550
1670992310,7cyclictest0-21swapper/010:04:390
1670992310,6cyclictest0-21swapper/011:03:250
167099230,2cyclictest0-21swapper/011:26:160
1670992210,8cyclictest0-21swapper/011:51:510
1670992210,7cyclictest0-21swapper/009:43:370
167099220,1cyclictest0-21swapper/011:20:500
167099219,5cyclictest0-21swapper/011:33:290
167099212,12cyclictest0-21swapper/010:18:260
1670992112,6cyclictest0-21swapper/008:58:310
167099211,12cyclictest0-21swapper/010:53:250
1670992110,4cyclictest0-21swapper/012:28:290
167099206,10cyclictest0-21swapper/009:53:290
167099204,10cyclictest0-21swapper/008:48:240
1670992018,2cyclictest11520-21apache211:00:260
1670992018,1cyclictest11494-21apache208:30:540
1670992013,5cyclictest100150irq/106-eth1-rx10:44:030
1670992010,7cyclictest0-21swapper/008:23:130
1670992010,5cyclictest0-21swapper/009:34:480
1670992010,5cyclictest0-21swapper/009:08:140
1670992010,3cyclictest0-21swapper/009:48:230
115822010,0sleep00-21swapper/009:30:450
167099197,3cyclictest23500-21/usr/sbin/munin08:03:270
167099195,6cyclictest0-21swapper/012:03:300
167099193,10cyclictest0-21swapper/007:38:290
1670991917,1cyclictest11520-21apache209:58:250
1670991914,4cyclictest100250irq/107-eth1-rx10:13:210
1670991910,3cyclictest0-21swapper/012:33:190
1670991910,3cyclictest0-21swapper/010:12:110
1670991910,3cyclictest0-21swapper/009:26:040
1670991910,3cyclictest0-21swapper/009:13:250
1670991910,3cyclictest0-21swapper/008:53:290
1670991910,2cyclictest0-21swapper/011:17:300
167099190,2cyclictest17072-21kworker/u4:012:25:520
167099189,6cyclictest25084-21cpuspeed_turbos08:08:250
1670991816,1cyclictest11494-21apache208:45:430
1670991814,2cyclictest1199-21runrttasks07:08:300
1670991810,4cyclictest0-21swapper/012:21:560
1670991810,4cyclictest0-21swapper/009:40:110
1670991810,4cyclictest0-21swapper/007:58:250
1670991810,3cyclictest0-21swapper/010:48:270
1670991810,3cyclictest0-21swapper/008:33:350
1670991810,1cyclictest0-21swapper/007:33:140
166762180,0sleep00-21swapper/007:43:330
167099178,4cyclictest0-21swapper/008:13:280
167099174,10cyclictest0-21swapper/007:13:320
167099173,9cyclictest0-21swapper/008:38:310
167099171,7cyclictest0-21swapper/012:16:560
1670991710,3cyclictest0-21swapper/011:53:270
1670991710,1cyclictest0-21swapper/010:33:250
167099162,9cyclictest0-21swapper/007:23:260
1670991610,3cyclictest0-21swapper/007:56:090
1670991610,2cyclictest0-21swapper/007:28:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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