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 3616 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 Thu Mar 26, 2026 01:16:20)
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
15166	99	373	361,7	cyclictest	25125	-21	kworker/1:1+kec_query		1
15166	99	365	354,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	364	352,7	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	361	348,8	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	356	1,5	cyclictest	22791	-21	chrt		0
15166	99	354	343,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	354	2,345	cyclictest	30377	-21	ssh		0
15166	99	353	342,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	353	333,15	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	353	342,7	cyclictest	0	-21	swapper/0		0
15166	99	352	339,7	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	351	340,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	351	340,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	351	340,6	cyclictest	25125	-21	kworker/1:1+kec_query		1
15166	99	351	340,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	351	340,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	351	340,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	351	2,341	cyclictest	19793	-21	sed		0
15166	99	350	338,7	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	350	338,6	cyclictest	9275	-21	kworker/1:0+kec_query		1
15166	99	350	334,7	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	350	1,13	cyclictest	20631	-21	cat		0
15166	99	349	338,6	cyclictest	32186	-21	kworker/1:2+kec_query		1
15166	99	349	337,7	cyclictest	25125	-21	kworker/1:1+kec_query		1
15161	99	349	338,6	cyclictest	9000	-21	ssh		0
15161	99	349	2,341	cyclictest	0	-21	swapper/0		0
15166	99	348	336,6	cyclictest	25125	-21	kworker/1:1+kec_query		1
15166	99	348	336,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	348	336,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	348	334,7	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	347	336,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	347	335,7	cyclictest	25125	-21	kworker/1:1+kec_query		1
15166	99	347	335,7	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	347	334,8	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	347	338,5	cyclictest	0	-21	swapper/0		0
15161	99	347	2,338	cyclictest	10673	-21	grep		0
15166	99	346	335,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	346	329,8	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	346	2,11	cyclictest	2530	-21	ntpq		0
15161	99	346	1,339	cyclictest	0	-21	swapper/0		0
15166	99	345	333,7	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	345	333,7	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	345	330,10	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	345	1,338	cyclictest	0	-21	swapper/0		0
15166	99	344	333,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	344	332,6	cyclictest	9275	-21	kworker/1:0+kec_query		1
15166	99	344	332,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	344	332,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	343	332,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	343	332,6	cyclictest	1448	-21	kworker/1:1+kec_query		1
15161	99	343	334,5	cyclictest	0	-21	swapper/0		0
15161	99	343	2,3	cyclictest	0	-21	swapper/0		0
15166	99	342	331,6	cyclictest	25125	-21	kworker/1:1+kec_query		1
15166	99	342	331,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	342	330,7	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	342	1,13	cyclictest	14580	-21	ssh		0
15166	99	341	330,6	cyclictest	32186	-21	kworker/1:2+kec_query		1
15166	99	341	330,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	341	330,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	341	330,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	341	330,6	cyclictest	1448	-21	kworker/1:1+kec_query		1
15161	99	341	2,5	cyclictest	28647	-21	chrt		0
15161	99	341	2,4	cyclictest	30773	-21	diskmemload		0
15166	99	340	329,6	cyclictest	32186	-21	kworker/1:2+kec_query		1
15166	99	340	329,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	340	329,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	340	328,7	cyclictest	9275	-21	kworker/1:0+kec_query		1
15161	99	340	1,332	cyclictest	4895	-21	if_enp1s0		0
15166	99	339	327,7	cyclictest	9275	-21	kworker/1:0+kec_query		1
15161	99	339	3,329	cyclictest	15153	-21	cyclictest		0
15161	99	339	1,3	cyclictest	0	-21	swapper/0		0
15166	99	338	327,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	337	326,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	337	326,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	337	326,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	337	326,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15161	99	337	1,330	cyclictest	0	-21	swapper/0		0
15166	99	336	324,6	cyclictest	314	-21	kworker/1:1+kec_query		1
15166	99	336	324,6	cyclictest	23682	-21	kworker/1:0+kec_query		1
15166	99	336	323,6	cyclictest	314	-21	kworker/1:1+kec_query		1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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