OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #6, slot #4

Click here to display the system's profile data or here to proceed to next system.

Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 3618 SMIs that occured during the measurement.
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 rack6slot4.osadl.org (updated Tue Mar 31, 2026 01:16:19)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
"interval":	200,		6448
"cycles":	100000000,		6447
"load":	"idle",		6446
"condition":	{		6445
"clock":	"1100"		6443
"family":	"x86",		6442
"vendor":	"Intel",		6441
"processor":	{		6439
"dataset":	"2024-01-08T03:36:49+01:00"		6437
"origin":	"2024-01-08T00:43:22+01:00",		6436
"timestamps":	{		6435
"granularity":	"microseconds"		6433
"maxima":	[		6429
"cores":	[		5221
"latency":	{		5220
"hostname":	"rack6slot4.osadl.org"		5218
"system":	{		5217
"version":	"1.0",		5214
"format":	{		5213
"patches":	[		5204
12159	99	370	348,17	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	369	358,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	369	358,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	369	357,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	363	352,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	360	348,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	358	346,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	357	346,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12154	99	356	1,11	cyclictest	19792	-21	latency_hist		0
12159	99	354	340,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12154	99	354	1,345	cyclictest	1833	-21	ls		0
12159	99	352	341,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	351	339,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	351	331,15	cyclictest	9530	-21	kworker/1:0+kec_query		1
12154	99	351	1,342	cyclictest	17705	-21	seq		0
12159	99	350	339,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	350	338,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	349	337,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	348	337,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	348	337,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12159	99	347	4,337	cyclictest	52	50	irq/9-acpi		1
12159	99	347	335,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	346	335,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	346	334,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	345	334,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	345	334,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	345	334,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12159	99	345	333,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12154	99	345	3,5	cyclictest	0	-21	swapper/0		0
12154	99	345	2,6	cyclictest	14146	-21	awk		0
12159	99	344	333,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	344	333,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	344	333,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	344	333,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	344	333,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	344	333,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12159	99	344	332,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	344	331,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	344	331,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12154	99	343	1,3	cyclictest	0	-21	swapper/0		0
12159	99	342	331,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	342	331,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	341	329,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	341	329,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	340	329,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	340	329,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	339	327,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	339	327,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12159	99	338	326,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	337	326,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	337	324,8	cyclictest	9530	-21	kworker/1:0+kec_query		1
12154	99	337	328,5	cyclictest	0	-21	swapper/0		0
12154	99	337	328,5	cyclictest	0	-21	swapper/0		0
12159	99	336	325,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	336	325,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12159	99	336	325,5	cyclictest	9530	-21	kworker/1:0+kec_query		1
12154	99	336	327,5	cyclictest	0	-21	swapper/0		0
12159	99	335	324,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	335	324,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12159	99	335	323,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	335	323,7	cyclictest	9530	-21	kworker/1:0+kec_query		1
12154	99	335	324,6	cyclictest	11377	-21	kworker/0:1+kec_query		0
12154	99	334	2,3	cyclictest	0	-21	swapper/0		0
12159	99	332	321,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	331	320,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12154	99	331	322,5	cyclictest	0	-21	swapper/0		0
12159	99	330	320,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	329	318,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	329	318,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	329	318,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	329	318,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12159	99	329	318,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12154	99	329	320,5	cyclictest	0	-21	swapper/0		0
12154	99	329	2,3	cyclictest	0	-21	swapper/0		0
12159	99	328	317,6	cyclictest	9530	-21	kworker/1:0+kec_query		1
12159	99	328	317,6	cyclictest	19570	-21	kworker/1:2+kec_query		1
12154	99	327	318,5	cyclictest	0	-21	swapper/0		0
12154	99	327	318,5	cyclictest	0	-21	swapper/0		0
12154	99	327	316,6	cyclictest	11377	-21	kworker/0:1+kec_query		0
12154	99	327	316,6	cyclictest	11377	-21	kworker/0:1+kec_query		0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17