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2026-04-18 - 08:17
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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 all highest latencies:
System rackcslot2.osadl.org (updated Sat Apr 18, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
898726855,8sleep10-21swapper/119:05:181
895726855,8sleep00-21swapper/019:04:590
136782640,0sleep10-21swapper/123:54:411
240232600,0sleep024021-21seq23:24:250
9534993911,6cyclictest100250irq/107-eth1-rx22:08:591
953499340,9cyclictest0-21swapper/122:24:241
9533993333,0cyclictest7-21ksoftirqd/021:34:300
953399310,3cyclictest91rcu_preempt23:44:230
9534993021,9cyclictest4972-21kworker/1:221:10:271
953499300,27cyclictest4078-21kworker/u4:223:49:251
9533993023,4cyclictest7-21ksoftirqd/020:56:560
953499294,2cyclictest28559-21tune2fs00:19:211
953499293,7cyclictest0-21swapper/123:39:241
953499290,8cyclictest0-21swapper/121:27:361
953399292,3cyclictest91rcu_preempt21:49:320
953399290,1cyclictest91rcu_preempt21:59:490
9534992828,0cyclictest0-21swapper/123:18:171
9534992810,5cyclictest0-21swapper/119:09:201
9534992810,17cyclictest0-21swapper/100:35:371
9533992810,1cyclictest0-21swapper/021:43:120
953399280,21cyclictest0-21swapper/023:05:110
953499273,5cyclictest0-21swapper/121:47:501
953499272,9cyclictest23326-21munin-run22:39:091
953499272,6cyclictest0-21swapper/120:09:191
953499271,7cyclictest9414-21/usr/sbin/munin21:34:201
953499271,6cyclictest0-21swapper/123:29:241
953399279,10cyclictest91rcu_preempt23:59:430
9533992727,0cyclictest0-21swapper/023:15:350
9533992726,0cyclictest7-21ksoftirqd/023:49:220
9533992716,5cyclictest7-21ksoftirqd/022:28:450
9534992617,7cyclictest10651-21apache200:31:471
953499261,2cyclictest0-21swapper/121:29:281
953499260,6cyclictest23173-21diskmemload21:57:191
953399264,4cyclictest91rcu_preempt23:55:130
9533992621,4cyclictest7-21ksoftirqd/020:14:260
9533992621,4cyclictest10681-21apache221:22:240
9533992620,3cyclictest81ktimersoftd/000:38:210
9533992616,7cyclictest0-21swapper/000:15:540
953399260,23cyclictest0-21swapper/022:17:540
953399260,18cyclictest0-21swapper/022:44:290
9534992510,9cyclictest0-21swapper/123:35:071
953399252,9cyclictest91rcu_preempt21:44:360
9533992525,0cyclictest0-21swapper/022:29:300
9533992524,1cyclictest0-21swapper/020:23:210
9533992520,3cyclictest7-21ksoftirqd/023:38:300
9533992517,3cyclictest7-21ksoftirqd/022:43:370
953399251,2cyclictest91rcu_preempt22:22:060
953499248,9cyclictest23173-21diskmemload23:44:191
9534992415,8cyclictest636-21nscd00:07:091
9533992422,1cyclictest2096-21apache_volume22:09:200
9533992410,3cyclictest0-21swapper/023:41:550
953499233,9cyclictest0-21swapper/122:16:011
9534992321,2cyclictest0-21swapper/123:22:461
9534992320,3cyclictest10681-21apache219:40:301
9534992319,2cyclictest802-21apache200:13:391
9534992317,3cyclictest9531-21cyclictest22:59:581
953399239,2cyclictest91rcu_preempt22:06:110
953399233,11cyclictest0-21swapper/021:04:280
953399232,1cyclictest91rcu_preempt23:00:320
9533992318,4cyclictest7-21ksoftirqd/019:24:230
9533992317,4cyclictest10681-21apache220:09:280
953399230,1cyclictest0-21swapper/021:17:000
953499222,5cyclictest0-21swapper/120:57:571
9534992220,1cyclictest10681-21apache221:19:001
9534992219,2cyclictest705-21ntpd20:38:551
9534992217,5cyclictest0-21swapper/121:19:291
9534992217,3cyclictest10651-21apache223:10:171
9534992214,5cyclictest10681-21apache221:40:441
953499221,19cyclictest0-21swapper/122:54:281
9534992210,8cyclictest0-21swapper/123:24:201
9534992210,6cyclictest0-21swapper/123:04:271
9534992210,4cyclictest0-21swapper/122:10:291
953399229,7cyclictest7-21ksoftirqd/023:19:190
9533992220,2cyclictest0-21swapper/020:34:220
9533992219,2cyclictest0-21swapper/022:51:440
953399221,4cyclictest91rcu_preempt23:33:290
9533992210,3cyclictest0-21swapper/019:44:240
953499216,9cyclictest0-21swapper/120:02:101
9534992117,4cyclictest0-21swapper/100:17:571
9534992115,3cyclictest0-21swapper/122:49:251
9534992110,6cyclictest0-21swapper/123:59:281
9534992110,6cyclictest0-21swapper/122:33:341
9533992121,0cyclictest0-21swapper/000:09:260
953399211,9cyclictest91rcu_preempt21:31:100
9533992113,7cyclictest0-21swapper/021:59:040
953399211,12cyclictest0-21swapper/000:19:200
9533992110,10cyclictest0-21swapper/020:29:280
953499205,12cyclictest0-21swapper/119:14:241
9534992020,0cyclictest0-21swapper/120:29:491
9534992010,5cyclictest0-21swapper/120:14:281
9534992010,4cyclictest0-21swapper/119:24:251
953499200,14cyclictest0-21swapper/122:39:251
953399205,14cyclictest0-21swapper/000:29:200
953399203,5cyclictest0-21swapper/019:39:200
953399203,3cyclictest91rcu_preempt20:24:250
9533992016,1cyclictest7-21ksoftirqd/020:59:420
9533992015,3cyclictest7-21ksoftirqd/000:04:220
9533992015,1cyclictest7-21ksoftirqd/020:39:240
9533992014,5cyclictest10681-21apache221:13:390
9533992011,1cyclictest0-21swapper/022:34:310
953499194,7cyclictest0-21swapper/120:24:231
953499192,8cyclictest0-21swapper/119:49:201
953499192,8cyclictest0-21swapper/119:19:181
953499192,12cyclictest0-21swapper/119:34:191
9534991910,6cyclictest0-21swapper/121:50:101
9534991910,4cyclictest0-21swapper/120:04:191
9534991910,3cyclictest0-21swapper/122:48:531
953499190,10cyclictest15501-21latency_hist20:49:091
953399196,12cyclictest0-21swapper/022:54:220
953399195,12cyclictest0-21swapper/019:34:190
9533991915,3cyclictest29164-21hddtemp_smartct19:59:210
9533991914,3cyclictest802-21apache220:05:020
9533991910,5cyclictest0-21swapper/021:26:210
9533991910,0cyclictest0-21swapper/019:49:490
2970621910,0sleep10-21swapper/122:01:581
145421910,0sleep00-21swapper/000:25:420
953499189,7cyclictest0-21swapper/120:49:171
9534991810,4cyclictest0-21swapper/100:27:441
953499180,9cyclictest22065-21sort21:04:241
9533991816,1cyclictest17288-21/usr/sbin/munin19:29:250
9533991814,3cyclictest12333-21pluginstate19:14:260
1113721810,1sleep00-21swapper/019:11:550
9534991715,0cyclictest100250irq/107-eth1-rx22:22:341
9534991710,2cyclictest0-21swapper/119:54:201
953399173,13cyclictest0-21swapper/020:52:100
953399172,10cyclictest13862-21/usr/sbin/munin19:19:210
9533991710,2cyclictest0-21swapper/023:09:190
953499166,6cyclictest0-21swapper/120:59:201
953499162,8cyclictest0-21swapper/119:46:201
9534991610,3cyclictest0-21swapper/119:29:191
9533991610,1cyclictest0-21swapper/020:46:290
953499154,4cyclictest0-21swapper/120:19:191
9534991510,1cyclictest0-21swapper/120:39:211
953399154,8cyclictest10681-21apache219:54:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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