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 Mon Aug 24, 2026 13:16:23)
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
5687	99	385	375,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	385	374,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	379	367,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	377	366,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	370	361,5	cyclictest	0	-21	swapper/0		0
5687	99	369	358,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	369	358,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	366	355,6	cyclictest	4906	-21	kworker/1:2+kec_query		1
5687	99	365	343,17	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	364	353,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	364	353,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	362	349,8	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	362	353,5	cyclictest	0	-21	swapper/0		0
5682	99	362	2,353	cyclictest	15940	-21	memory		0
5687	99	361	340,16	cyclictest	4906	-21	kworker/1:2+kec_query		1
5687	99	360	348,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	360	3,349	cyclictest	19629	-21	apt-get		0
5687	99	359	348,6	cyclictest	4906	-21	kworker/1:2+kec_query		1
5687	99	359	348,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	358	5,347	cyclictest	52	50	irq/9-acpi		1
5687	99	358	346,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	358	349,5	cyclictest	0	-21	swapper/0		0
5682	99	357	2,348	cyclictest	2272	-21	hddtemp_smartct		0
5687	99	356	345,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	356	345,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	356	344,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	356	347,5	cyclictest	0	-21	swapper/0		0
5687	99	355	344,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	355	344,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	355	343,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	355	346,5	cyclictest	18548	-21	ssh		0
5682	99	355	346,5	cyclictest	0	-21	swapper/0		0
5682	99	355	345,5	cyclictest	16543	-21	ssh		0
5682	99	355	2,346	cyclictest	0	-21	swapper/0		0
5687	99	354	343,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	354	343,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	354	343,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	354	331,18	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	354	345,5	cyclictest	0	-21	swapper/0		0
5682	99	354	341,7	cyclictest	28019	-21	ntp_states		0
5687	99	353	342,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	353	342,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	353	341,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	352	341,6	cyclictest	4906	-21	kworker/1:2+kec_query		1
5687	99	352	341,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	352	341,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	352	341,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	352	343,5	cyclictest	0	-21	swapper/0		0
5687	99	351	340,6	cyclictest	4906	-21	kworker/1:2+kec_query		1
5687	99	351	340,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	351	339,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	351	342,5	cyclictest	0	-21	swapper/0		0
5682	99	351	2,342	cyclictest	9973	-21	diskstats		0
5687	99	350	339,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	350	339,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	350	339,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	350	341,5	cyclictest	0	-21	swapper/0		0
5682	99	350	1,6	cyclictest	7617	-21	ntp_states		0
5682	99	350	1,343	cyclictest	0	-21	swapper/0		0
5687	99	349	338,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	349	338,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	349	337,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	349	337,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	349	2,341	cyclictest	0	-21	swapper/0		0
5682	99	349	1,342	cyclictest	0	-21	swapper/0		0
5687	99	348	341,4	cyclictest	52	50	irq/9-acpi		1
5687	99	348	338,5	cyclictest	4906	-21	kworker/1:2+kec_query		1
5687	99	348	337,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	348	337,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	348	1,3	cyclictest	0	-21	swapper/0		0
5687	99	347	336,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	347	336,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	347	335,7	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	347	334,8	cyclictest	3089	-21	kworker/1:0+kec_query		1
5682	99	347	2,339	cyclictest	0	-21	swapper/0		0
5682	99	347	1,340	cyclictest	0	-21	swapper/0		0
5682	99	347	1,340	cyclictest	0	-21	swapper/0		0
5682	99	347	1,340	cyclictest	0	-21	swapper/0		0
5687	99	346	335,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
5687	99	346	335,6	cyclictest	3089	-21	kworker/1:0+kec_query		1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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