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2026-04-10 - 13:12
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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 rackcslot2.osadl.org (updated Fri Apr 10, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
773426956,8sleep10-21swapper/119:08:051
214692650,1sleep00-21swapper/022:37:350
752126451,8sleep00-21swapper/019:05:530
802399409,2cyclictest91rcu_preempt22:24:261
802399408,9cyclictest24-21ksoftirqd/119:59:291
802399399,4cyclictest24-21ksoftirqd/100:24:271
8023993737,0cyclictest0-21swapper/121:25:561
802399349,3cyclictest91rcu_preempt21:09:261
8023993426,2cyclictest24-21ksoftirqd/123:09:271
802399327,8cyclictest91rcu_preempt23:29:331
8023993229,1cyclictest24-21ksoftirqd/100:13:421
8023993210,3cyclictest91rcu_preempt22:50:011
802399317,4cyclictest91rcu_preempt23:22:151
8023993129,0cyclictest24-21ksoftirqd/121:42:081
8023993115,9cyclictest24-21ksoftirqd/123:53:231
8023993110,3cyclictest91rcu_preempt22:04:081
8023993110,20cyclictest0-21swapper/120:19:291
802399309,1cyclictest91rcu_preempt20:07:101
8023993029,0cyclictest24-21ksoftirqd/100:34:541
8023993026,3cyclictest24-21ksoftirqd/122:40:191
8023993026,2cyclictest24-21ksoftirqd/121:33:261
8023993022,4cyclictest24-21ksoftirqd/123:38:161
802399297,3cyclictest91rcu_preempt21:52:331
8023992927,1cyclictest231ktimersoftd/120:29:301
8023992916,7cyclictest231ktimersoftd/123:47:401
8023992825,2cyclictest24198-21apache_accesses00:14:231
8023992825,2cyclictest14411-21irqstats19:24:271
8023992824,3cyclictest26901-21sed21:14:351
8023992824,3cyclictest17532-21latency_hist19:34:121
8023992824,3cyclictest16665-21latency20:54:281
8023992824,3cyclictest15313-21expr23:14:261
8023992727,0cyclictest24-21ksoftirqd/122:44:251
8023992725,1cyclictest603-21apache_volume20:14:241
8023992725,1cyclictest5091-21memory22:14:291
8023992725,1cyclictest31330-21df20:09:221
8023992724,2cyclictest8679-21memory19:09:271
8023992724,2cyclictest18190-21cstates20:59:241
8023992723,3cyclictest3595-21ssh23:43:361
8023992722,4cyclictest24-21ksoftirqd/123:56:331
8023992624,1cyclictest29725-21diskstats21:19:261
8023992624,1cyclictest13008-21ntp_states20:44:301
8023992624,1cyclictest10322-21apache_processe20:39:221
8023992623,2cyclictest7769-21/usr/sbin/munin23:04:241
8023992623,2cyclictest29671-21apache_volume22:04:241
8023992623,2cyclictest18534-21apache_accesses00:04:231
8023992623,2cyclictest15574-21if_eth021:44:281
8023992622,3cyclictest0-21swapper/122:34:121
8023992622,2cyclictest24-21ksoftirqd/122:34:301
8023992621,4cyclictest27143-21ls00:19:261
8023992617,8cyclictest11956-21/usr/sbin/munin19:19:231
8023992613,12cyclictest1579-21apache_accesses00:29:231
8022992610,15cyclictest0-21swapper/000:34:480
8022992610,11cyclictest29661-21fschecks_count22:49:250
8023992523,2cyclictest21663-21diskmemload00:00:031
8023992522,2cyclictest21663-21diskmemload22:59:261
8023992522,2cyclictest0-21swapper/119:14:241
8023992521,3cyclictest21663-21diskmemload23:27:301
8023992521,3cyclictest0-21swapper/120:34:251
8023992517,7cyclictest21663-21diskmemload21:35:551
8023992516,5cyclictest231ktimersoftd/121:54:281
8023992516,4cyclictest231ktimersoftd/119:44:321
8022992524,0cyclictest7-21ksoftirqd/023:59:080
8023992422,2cyclictest893-21ssh22:09:181
8023992422,1cyclictest4511-21apache_volume20:24:251
8023992421,2cyclictest0-21swapper/122:54:141
8023992421,2cyclictest0-21swapper/122:19:261
802299244,19cyclictest0-21swapper/023:43:580
802299242,21cyclictest0-21swapper/021:14:290
8022992418,4cyclictest9884-21apache222:05:060
8022992417,0cyclictest0-21swapper/000:10:490
8022992410,5cyclictest0-21swapper/000:29:230
8023992320,2cyclictest20004-21sed19:39:261
8023992320,2cyclictest19899-21/usr/sbin/munin21:04:251
8023992314,8cyclictest0-21swapper/120:52:161
8022992322,0cyclictest7-21ksoftirqd/020:59:250
8022992318,3cyclictest744-21snmpd23:15:560
8022992317,1cyclictest7-21ksoftirqd/022:24:260
8022992311,3cyclictest0-21swapper/021:26:580
8022992311,10cyclictest100250irq/107-eth1-rx23:07:160
802299230,16cyclictest0-21swapper/023:59:230
8023992219,3cyclictest0-21swapper/119:49:231
8023992219,3cyclictest0-21swapper/119:49:231
8023992217,5cyclictest0-21swapper/119:34:281
8023992215,6cyclictest25363-21apache_accesses19:54:241
802299228,7cyclictest8338-21apache_processe20:34:240
8022992221,1cyclictest7-21ksoftirqd/021:13:020
8022992220,1cyclictest7-21ksoftirqd/023:24:300
802299221,3cyclictest91rcu_preempt23:44:310
8022992212,6cyclictest100350irq/108-eth1-tx21:20:340
8022992212,5cyclictest636-21nscd21:57:180
802299215,9cyclictest0-21swapper/019:24:290
802299214,10cyclictest0-21swapper/019:39:270
802299212,2cyclictest91rcu_preempt19:09:270
8022992119,1cyclictest9860-21apache221:49:330
8022992116,4cyclictest636-21nscd21:37:480
8022992115,4cyclictest9860-21apache221:29:220
8022992111,7cyclictest0-21swapper/023:12:090
8022992110,6cyclictest0-21swapper/023:49:240
8022992110,5cyclictest0-21swapper/020:54:240
8022992110,4cyclictest0-21swapper/023:00:250
8022992110,4cyclictest0-21swapper/019:14:240
8022992110,3cyclictest0-21swapper/021:59:290
8022992110,1cyclictest0-21swapper/000:14:220
802299205,10cyclictest0-21swapper/019:19:230
8022992019,1cyclictest9860-21apache222:58:310
8022992019,0cyclictest7-21ksoftirqd/022:14:250
8022992018,1cyclictest7-21ksoftirqd/022:13:330
8022992010,7cyclictest0-21swapper/020:29:240
8022992010,6cyclictest0-21swapper/019:59:230
8022992010,6cyclictest0-21swapper/000:24:240
8022992010,5cyclictest0-21swapper/021:44:320
802299200,11cyclictest0-21swapper/019:49:230
802299200,11cyclictest0-21swapper/019:49:230
2788622010,0sleep00-21swapper/023:31:130
955421910,0sleep00-21swapper/022:20:010
802299194,5cyclictest0-21swapper/019:29:240
802299194,11cyclictest0-21swapper/000:04:230
802299193,10cyclictest0-21swapper/000:19:350
8022991918,0cyclictest0-21swapper/022:45:090
8022991916,2cyclictest802-21apache220:21:280
8022991910,5cyclictest0-21swapper/022:39:220
8022991910,5cyclictest0-21swapper/020:39:250
8022991910,2cyclictest0-21swapper/022:29:300
802299190,11cyclictest0-21swapper/021:39:250
802299186,4cyclictest7-21ksoftirqd/019:34:290
8022991817,1cyclictest9884-21apache223:21:370
8022991817,0cyclictest7-21ksoftirqd/020:09:210
8022991810,1cyclictest0-21swapper/023:35:170
8022991810,1cyclictest0-21swapper/020:52:260
8022991717,0cyclictest7-21ksoftirqd/021:06:370
802299170,14cyclictest0-21swapper/020:24:290
802299164,6cyclictest0-21swapper/020:44:300
8022991610,2cyclictest0-21swapper/020:04:250
8022991610,0cyclictest0-21swapper/020:17:530
8022991510,2cyclictest0-21swapper/019:55:010
8022991510,1cyclictest0-21swapper/019:44:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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