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2026-07-17 - 00:04
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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 792 highest latencies:
System rack6slot5.osadl.org (updated Thu Jul 16, 2026 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312389983484198,4136cyclictest21804-21kworker/0:107:23:110
312389968873703,3180cyclictest21804-21kworker/0:107:15:330
312389965783655,2921cyclictest21804-21kworker/0:107:12:240
312389942444161,70cyclictest21804-21kworker/0:107:26:320
30597267149,203sleep00-21swapper07:05:480
312389950674,192cyclictest12065-21ssh09:10:170
312389949037,439cyclictest4924-21runrttasks08:34:550
312389945927,418cyclictest25297-21ssh10:52:020
312389945564,94cyclictest26022-21munin-node10:56:060
312389944878,188cyclictest16397-21ssh10:31:410
312389944667,366cyclictest0-21swapper07:31:200
312389944666,88cyclictest10594-21chrt11:32:030
312389944567,88cyclictest748-21sed11:10:400
312389944558,88cyclictest9090-21grep10:15:460
312389944272,187cyclictest12172-21ssh10:22:360
312389944057,208cyclictest0-21swapper08:19:000
312389943878,178cyclictest31971-21ssh11:07:140
312389943857,368cyclictest0-21swapper11:57:150
312389943751,373cyclictest0-21swapper12:28:570
312389943556,366cyclictest0-21swapper08:56:300
312389943264,186cyclictest12919-21ssh11:37:430
312389943259,314cyclictest0-21swapper08:42:300
312389942766,178cyclictest0-21swapper07:45:510
312389942764,303cyclictest3227-21strings11:15:570
312389942464,301cyclictest32385-21ssh12:22:450
312389942131,0cyclictest0-21swapper10:01:430
312389941755,302cyclictest0-21swapper11:21:530
312389941551,351cyclictest0-21swapper07:56:350
312389941350,303cyclictest14549-21ssh09:15:320
312389940735,372cyclictest0-21swapper10:25:050
312389940631,375cyclictest8801-31apt-get07:35:070
312389940133,355cyclictest11-21ksoftirqd/009:56:230
312389940051,336cyclictest351950irq/10-yenta12:14:160
312389940037,349cyclictest19247-21ssh10:39:570
312389939936,340cyclictest4924-21runrttasks09:01:200
312389939932,361cyclictest11857-21diskmemload09:27:070
312389939734,351cyclictest7789-21ssh10:12:430
312389939632,350cyclictest16459-21sendmail_mailst09:20:140
312389939628,355cyclictest11857-21diskmemload10:09:100
312389939433,361cyclictest4305-21snmpd11:04:520
312389939432,360cyclictest4224-21lldpd08:45:130
312389939432,357cyclictest21147-21ssh10:43:210
312389939331,349cyclictest11857-21diskmemload12:08:280
312389939228,349cyclictest19412-21perl08:00:580
312389939138,340cyclictest30214-21ssh12:18:030
312389939034,347cyclictest351950irq/10-yenta11:40:400
312389938935,340cyclictest11857-21diskmemload09:49:070
312389938837,337cyclictest16304-21awk11:45:380
312389938835,340cyclictest11857-21diskmemload11:25:160
312389938832,343cyclictest6084-21ssh12:36:140
312389938732,342cyclictest14864-1kworker/0:2H09:50:160
312389938716,358cyclictest897-21jbd2/sda1-808:10:040
312389938714,359cyclictest22689-21ssh09:33:590
312389938632,354cyclictest0-21swapper10:48:360
312389938632,340cyclictest11857-21diskmemload11:52:270
312389938631,355cyclictest0-21swapper09:36:500
312389938533,338cyclictest4924-21runrttasks12:34:450
312389938431,292cyclictest4253-21nscd08:20:170
312389938328,355cyclictest0-21swapper08:52:180
312389938228,340cyclictest21965-21ls08:10:030
312389938035,345cyclictest0-21swapper12:01:540
312389937335,279cyclictest4924-21runrttasks07:52:290
312389936436,269cyclictest635-21latency_hist08:40:040
312389936357,293cyclictest11-21ksoftirqd/009:42:120
312389935135,157cyclictest10886-21ntpq07:40:190
312389934268,261cyclictest0-21swapper09:07:180
312389933968,213cyclictest0-21swapper08:29:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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