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2026-08-05 - 11:40
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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 100 highest latencies:
System rack6slot5.osadl.org (updated Wed Aug 05, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
172219978363958,3864cyclictest8987-21kworker/0:019:14:340
172219967323672,3056cyclictest8987-21kworker/0:019:16:080
16715260635,178sleep00-21swapper19:06:270
172219949432,448cyclictest29912-21diskmemload23:23:020
172219948934,441cyclictest29912-21diskmemload22:12:030
172219948834,441cyclictest9403-21ssh22:50:110
172219948834,441cyclictest29912-21diskmemload00:01:060
172219948834,440cyclictest29912-21diskmemload00:08:270
172219948833,440cyclictest29912-21diskmemload21:38:080
172219948735,439cyclictest29912-21diskmemload23:28:420
172219948734,440cyclictest6997-21munin-node20:05:580
172219948734,439cyclictest5967-21ssh21:27:560
172219948734,439cyclictest31478-21ssh21:11:520
172219948734,439cyclictest29912-21diskmemload23:32:060
172219948734,439cyclictest29912-21diskmemload23:12:070
172219948734,439cyclictest29912-21diskmemload23:08:150
172219948734,439cyclictest29912-21diskmemload22:42:210
172219948734,439cyclictest29912-21diskmemload22:15:170
172219948733,441cyclictest29912-21diskmemload23:56:160
172219948733,440cyclictest29912-21diskmemload23:15:150
172219948733,440cyclictest29912-21diskmemload22:22:540
172219948634,439cyclictest8185-21ssh21:33:030
172219948634,439cyclictest32153-21ssh22:26:510
172219948634,439cyclictest29912-21diskmemload23:38:090
172219948633,439cyclictest29912-21diskmemload22:58:280
172219948633,439cyclictest29912-21diskmemload00:26:570
172219948633,439cyclictest20551-21strings22:01:000
172219948633,438cyclictest29912-21diskmemload21:54:480
172219948534,438cyclictest29912-21diskmemload23:42:330
172219948534,438cyclictest15435-21ssh23:02:440
172219948534,438cyclictest1302-21strings22:30:550
172219948534,437cyclictest27883-21strings19:35:430
172219948533,439cyclictest4305-21snmpd19:31:580
172219948533,438cyclictest12263-21strings20:20:400
172219948532,439cyclictest23345-21ssh22:06:470
172219948433,437cyclictest17479-21strings00:20:560
172219948431,439cyclictest2893-21ssh21:21:040
172219947925,394cyclictest12732-21df_inode00:10:380
172219946332,417cyclictest1709-21sed23:45:440
172219945831,367cyclictest4374-21ssh22:37:410
172219943453,322cyclictest897-21jbd2/sda1-820:30:530
172219941333,366cyclictest3884-21cron20:00:010
172219941242,312cyclictest0-21swapper20:29:110
172219940935,361cyclictest4277-21strings23:50:590
172219940933,376cyclictest0-21swapper21:19:030
172219940732,375cyclictest0-21swapper20:54:520
172219940556,288cyclictest17570-21chrt20:35:310
172219940542,349cyclictest0-21swapper19:45:160
172219940532,360cyclictest26333-21munin-node21:00:140
172219940332,88cyclictest12-21rcu_preempt21:55:450
172219940242,87cyclictest0-21swapper22:47:220
172219940131,356cyclictest29122-21kworker/u2:121:10:030
172219940056,284cyclictest21734-21cut19:20:220
172219939854,331cyclictest4924-21runrttasks21:49:480
172219939534,88cyclictest29912-21diskmemload21:41:220
172219939343,337cyclictest344450irq/10-eth020:55:240
172219939234,346cyclictest351950irq/10-yenta00:37:080
172219939134,344cyclictest5102-21munin-node20:00:560
172219939039,338cyclictest351950irq/10-yenta00:31:150
172219939028,303cyclictest29912-21diskmemload00:19:020
172219938832,342cyclictest11005-21apt-get20:17:060
172219938531,354cyclictest0-21swapper20:48:250
172219938531,354cyclictest0-21swapper19:29:290
172219938531,294cyclictest30461-21runrttasks19:42:540
172219938433,339cyclictest3481-21avahi-daemon20:11:000
172219938127,338cyclictest19440-21awk20:40:320
172219937235,337cyclictest0-21swapper19:51:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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