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2026-06-21 - 13:17
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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 the 376 highest latencies:
System rackcslot2.osadl.org (updated Sun Jun 21, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227172720,0sleep00-21swapper/022:40:420
398227157,10sleep00-21swapper/019:05:010
248426754,8sleep10-21swapper/119:03:401
451199377,1cyclictest91rcu_preempt21:36:120
451199358,1cyclictest20090-21runrttasks21:09:460
451199346,0cyclictest91rcu_preempt19:18:540
451199339,2cyclictest91rcu_preempt20:27:210
4511993311,2cyclictest91rcu_preempt23:19:290
4511993310,19cyclictest0-21swapper/023:37:440
451199325,1cyclictest91rcu_preempt23:48:240
4511993232,0cyclictest0-21swapper/020:47:390
4511993126,4cyclictest7-21ksoftirqd/022:13:570
4511993120,2cyclictest7-21ksoftirqd/000:07:360
4512992915,10cyclictest100150irq/106-eth1-rx23:19:181
451199298,11cyclictest7-21ksoftirqd/021:53:580
451199296,1cyclictest91rcu_preempt22:12:150
4511992929,0cyclictest0-21swapper/021:19:540
4511992922,3cyclictest7-21ksoftirqd/021:17:120
4511992919,7cyclictest7-21ksoftirqd/021:43:590
4512992710,7cyclictest0-21swapper/121:50:281
4511992725,1cyclictest23432-21/usr/sbin/munin21:58:550
4511992724,2cyclictest31771-21/usr/sbin/munin22:53:500
4511992724,2cyclictest3083-21apache_volume00:28:490
4511992723,3cyclictest167-21systemd-journal20:33:380
4511992723,1cyclictest7-21ksoftirqd/022:25:260
4511992710,15cyclictest0-21swapper/022:36:340
4511992623,2cyclictest7518-21/usr/sbin/munin23:03:550
4511992622,3cyclictest28279-21python22:04:010
4511992622,3cyclictest28091-21apache_volume00:18:510
4511992619,4cyclictest14788-21apache220:17:550
4511992615,10cyclictest10639-21perl19:23:510
4511992614,7cyclictest121rcuc/000:08:530
451199260,23cyclictest13081-21ssh23:55:040
451299257,6cyclictest18143-21diskmemload00:28:501
4512992524,1cyclictest0-21swapper/120:42:181
451199256,1cyclictest91rcu_preempt21:48:520
4511992523,2cyclictest12633-21ssh23:10:450
4511992522,3cyclictest16027-21python23:58:570
4511992522,2cyclictest9368-21ntpq21:38:550
4511992522,2cyclictest815-21latency23:38:540
4511992522,2cyclictest6105-21df22:18:510
4511992522,2cyclictest27853-21munin-run00:18:380
4511992522,2cyclictest26911-21/usr/sbin/munin20:03:580
4511992522,2cyclictest14461-21/usr/sbin/munin20:58:490
4511992522,2cyclictest14124-21apache_accesses19:33:490
4511992522,2cyclictest13081-21ls20:53:530
4511992521,3cyclictest18391-21hwlatdetect19:43:510
4511992520,4cyclictest3517-21kernelversion22:58:530
4511992519,3cyclictest81ktimersoftd/020:18:500
4511992518,3cyclictest7-21ksoftirqd/023:32:390
4511992510,13cyclictest0-21swapper/022:32:030
4512992415,4cyclictest14788-21apache223:46:521
4512992410,3cyclictest0-21swapper/120:30:021
451199247,12cyclictest0-21swapper/021:03:480
4511992422,1cyclictest24265-21apache_processe22:43:490
4511992421,2cyclictest8260-21ntp_states23:48:560
4511992421,2cyclictest18143-21diskmemload22:51:370
4511992421,2cyclictest18143-21diskmemload21:24:240
4511992420,3cyclictest27850-21grep20:08:510
4511992420,3cyclictest10843-21/usr/sbin/munin20:48:510
451199241,22cyclictest0-21swapper/023:23:550
4512992322,1cyclictest14814-21apache222:32:291
451299232,12cyclictest0-21swapper/121:13:561
4512992319,2cyclictest231ktimersoftd/119:38:481
4512992316,4cyclictest0-21swapper/100:22:181
4512992315,6cyclictest14788-21apache220:55:181
4512992310,8cyclictest0-21swapper/121:38:181
4512992310,12cyclictest0-21swapper/120:58:491
451199232,2cyclictest91rcu_preempt19:39:100
4511992320,2cyclictest14954-21ntp_states23:13:570
4511992320,2cyclictest1199-21runrttasks20:03:200
4511992314,4cyclictest121rcuc/019:28:510
451299222,13cyclictest0-21swapper/119:58:571
4512992219,1cyclictest14814-21apache221:41:071
4512992219,1cyclictest100450irq/109-eth1-tx21:59:461
4512992218,1cyclictest0-21swapper/100:37:511
4512992212,6cyclictest20204-21kworker/u4:221:32:571
4512992212,6cyclictest0-21swapper/123:14:001
451299220,5cyclictest12314-21/usr/sbin/munin21:43:561
451299220,0cyclictest0-21swapper/100:06:461
4511992221,1cyclictest21844-21apache_processe19:53:500
4511992220,1cyclictest6663-21df_inode19:13:500
4511992219,2cyclictest18143-21diskmemload00:26:480
4511992217,3cyclictest7-21ksoftirqd/021:30:000
4511992210,9cyclictest6153-21taskset20:34:360
451299215,8cyclictest100150irq/106-eth1-rx23:56:121
4512992121,0cyclictest0-21swapper/100:16:541
4512992117,3cyclictest14814-21apache200:08:511
4512992117,1cyclictest802-21apache222:25:521
451299211,3cyclictest0-21swapper/120:33:571
4512992110,4cyclictest0-21swapper/120:13:571
4512992110,4cyclictest0-21swapper/119:13:531
4512992110,3cyclictest0-21swapper/122:09:011
4512992110,3cyclictest0-21swapper/121:26:521
451299210,6cyclictest8646-21/usr/sbin/munin20:43:561
451299210,10cyclictest0-21swapper/122:38:571
4511992118,2cyclictest0-21swapper/000:38:230
4511992111,6cyclictest4535-21apache_processe19:08:490
451299204,11cyclictest0-21swapper/122:52:011
451299203,5cyclictest0-21swapper/121:08:531
4512992017,2cyclictest14788-21apache221:22:001
4512992014,4cyclictest14788-21apache200:00:101
4512992014,1cyclictest12092-21ssh23:09:291
451299201,2cyclictest25620-21sh22:44:011
451299201,10cyclictest0-21swapper/119:43:481
4512992010,7cyclictest0-21swapper/122:08:271
4512992010,4cyclictest0-21swapper/123:38:501
4512992010,4cyclictest0-21swapper/121:53:491
4512992010,2cyclictest0-21swapper/122:53:511
451299200,4cyclictest0-21swapper/123:33:491
4511992015,4cyclictest7276-21irqstats20:38:520
35852200,0sleep10-21swapper/122:14:281
451299193,10cyclictest0-21swapper/119:53:501
4512991918,1cyclictest0-21swapper/122:18:451
4512991918,0cyclictest0-21swapper/122:37:281
4512991916,2cyclictest0-21swapper/119:52:081
4512991913,4cyclictest100250irq/107-eth1-rx23:03:521
4512991911,2cyclictest0-21swapper/122:59:571
4512991910,4cyclictest0-21swapper/120:48:581
4512991910,3cyclictest0-21swapper/120:03:501
4512991910,3cyclictest0-21swapper/119:08:491
4512991910,2cyclictest0-21swapper/123:28:271
4511991910,3cyclictest0-21swapper/019:48:500
451299184,9cyclictest25113-21/usr/sbin/munin23:28:511
4512991811,3cyclictest32339-21kernelversion00:23:541
4512991810,4cyclictest0-21swapper/123:48:561
4512991810,0cyclictest0-21swapper/119:23:501
4512991710,4cyclictest0-21swapper/119:23:021
451299163,7cyclictest0-21swapper/119:28:501
4512991611,2cyclictest0-21swapper/120:18:511
4512991610,3cyclictest0-21swapper/121:03:531
451299153,10cyclictest0-21swapper/119:33:561
4512991510,1cyclictest0-21swapper/120:24:191
4512991510,0cyclictest0-21swapper/120:08:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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