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 3620 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 Nov 04, 2025 13:13:12)
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
27406	99	381	370,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	381	369,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	378	367,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	378	366,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	378	366,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	377	366,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	375	363,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	374	363,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27405	99	374	2,364	cyclictest	19916	-21	cstates		0
27406	99	372	361,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	369	358,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	369	358,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	369	358,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	369	357,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	368	357,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	368	356,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	365	353,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	362	354,5	cyclictest	52	50	irq/9-acpi		1
27406	99	362	351,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	361	350,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	360	348,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	358	347,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	358	347,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	358	345,8	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	358	345,8	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	357	345,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	356	345,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	356	345,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	355	344,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	355	343,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	355	343,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	355	330,16	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	354	343,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	354	343,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	353	342,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	353	342,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	352	5,4	cyclictest	52	50	irq/9-acpi		1
27405	99	352	341,6	cyclictest	1575	-21	kworker/0:1+kec_query		0
27406	99	351	340,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	351	340,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	350	339,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	350	339,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	350	339,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27405	99	350	2,342	cyclictest	0	-21	swapper/0		0
27406	99	349	338,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	349	338,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	349	338,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	349	338,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	349	338,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	349	338,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	349	337,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	349	337,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27405	99	349	332,12	cyclictest	26048	-21	cut		0
27406	99	348	337,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	348	337,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	348	337,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	348	336,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	348	336,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27405	99	348	1,339	cyclictest	5176	-21	sed		0
27406	99	347	336,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	347	336,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	347	330,12	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	346	335,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	346	335,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	346	335,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	346	335,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	346	333,8	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	345	334,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	345	334,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	345	334,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	345	334,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27406	99	344	333,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27405	99	344	1,337	cyclictest	0	-21	swapper/0		0
27405	99	343	1,3	cyclictest	0	-21	swapper/0		0
27406	99	342	330,7	cyclictest	691	-21	kworker/1:0+kec_query		1
27405	99	342	1,334	cyclictest	9590	-21	head		0
27406	99	340	329,6	cyclictest	691	-21	kworker/1:0+kec_query		1
27405	99	340	329,6	cyclictest	1575	-21	kworker/0:1+kec_query		0
27406	99	339	326,8	cyclictest	691	-21	kworker/1:0+kec_query		1
27405	99	337	326,6	cyclictest	1575	-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