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 Sun Mar 29, 2026 01:16:25)
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
13740	99	381	370,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	376	365,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	376	365,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	357	2,348	cyclictest	15448	-21	ntp_states		0
13748	99	355	344,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	354	343,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	354	343,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	354	342,7	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	353	342,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	352	342,5	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	352	341,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	351	338,8	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	350	339,6	cyclictest	26377	-21	kworker/1:2+kec_query		1
13748	99	350	339,6	cyclictest	26377	-21	kworker/1:2+kec_query		1
13748	99	349	338,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	349	338,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	349	337,7	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	348	337,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	348	336,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	348	336,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	347	336,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	347	335,7	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	346	334,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	346	328,13	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	346	335,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	346	335,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	346	335,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	345	337,5	cyclictest	52	50	irq/9-acpi		1
13740	99	345	334,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	345	334,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	344	333,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	344	333,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	344	332,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	344	332,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	344	333,6	cyclictest	0	-21	swapper/0		0
13748	99	343	331,7	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	343	330,8	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	343	332,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	343	332,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	342	330,7	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	341	331,5	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	341	330,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	341	330,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	341	328,7	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	341	332,5	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	341	328,8	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	340	329,6	cyclictest	26377	-21	kworker/1:2+kec_query		1
13740	99	340	331,5	cyclictest	0	-21	swapper/0		0
13748	99	339	327,7	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	339	327,7	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	339	329,5	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	338	326,7	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	338	327,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	338	327,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	337	330,4	cyclictest	52	50	irq/9-acpi		1
13748	99	337	326,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	336	327,5	cyclictest	0	-21	swapper/1		1
13748	99	336	325,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	336	325,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	335	325,5	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	335	326,5	cyclictest	0	-21	swapper/0		0
13740	99	335	324,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	335	324,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	335	324,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	335	322,8	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	334	324,5	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	334	323,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	333	322,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13748	99	333	322,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	333	323,5	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	333	322,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	332	5,5	cyclictest	24077	-21	ssh		1
13748	99	332	1,326	cyclictest	52	50	irq/9-acpi		1
13740	99	332	321,6	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	332	320,7	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	331	319,6	cyclictest	3619	-21	kworker/1:0+kec_query		1
13740	99	331	321,5	cyclictest	15548	-21	kworker/0:0+kec_query		0
13740	99	331	319,7	cyclictest	15548	-21	kworker/0:0+kec_query		0
13748	99	330	324,3	cyclictest	52	50	irq/9-acpi		1
13748	99	330	323,4	cyclictest	52	50	irq/9-acpi		1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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