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 Fri Mar 06, 2026 01:16:15)
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
22373	99	368	356,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	367	356,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	360	349,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	360	348,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	359	348,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	358	346,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	358	346,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	358	338,15	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	355	344,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	355	342,8	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	354	342,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	353	342,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	353	341,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	352	340,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	352	340,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	352	340,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	352	2,342	cyclictest	13792	-21	cut		0
22373	99	351	340,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	351	338,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	351	337,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	350	339,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	350	339,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	350	339,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	350	339,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	350	338,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	350	337,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	350	337,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	350	1,13	cyclictest	636	-21	runrttasks		0
22373	99	349	338,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	349	338,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	349	337,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	347	335,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	347	335,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	345	334,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	345	333,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	344	333,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	344	333,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	343	333,5	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	343	332,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	343	331,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	343	331,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	343	331,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	343	329,9	cyclictest	8036	-21	seq		0
22373	99	342	331,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	342	330,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	342	331,6	cyclictest	27270	-21	kworker/0:1+kec_query		0
22373	99	341	330,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	341	329,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	341	329,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	340	329,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	339	326,8	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	339	330,5	cyclictest	0	-21	swapper/0		0
22373	99	338	326,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	337	326,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	337	326,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	337	326,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	336	325,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	334	323,7	cyclictest	0	-21	swapper/0		0
22373	99	333	317,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	333	324,5	cyclictest	0	-21	swapper/0		0
22373	99	332	320,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	332	318,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	331	320,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	331	319,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	330	318,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	330	322,5	cyclictest	0	-21	swapper/0		0
22373	99	329	318,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	329	317,7	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	329	317,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	329	320,5	cyclictest	0	-21	swapper/0		0
22373	99	328	317,6	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	328	319,5	cyclictest	0	-21	swapper/0		0
22369	99	327	319,5	cyclictest	0	-21	swapper/0		0
22373	99	325	316,5	cyclictest	844	-21	kworker/1:0+kec_query		1
22369	99	325	317,5	cyclictest	0	-21	swapper/0		0
22369	99	325	316,5	cyclictest	0	-21	swapper/0		0
22369	99	325	316,5	cyclictest	0	-21	swapper/0		0
22369	99	325	312,7	cyclictest	6412	-21	ssh		0
22373	99	324	314,5	cyclictest	844	-21	kworker/1:0+kec_query		1
22373	99	324	312,7	cyclictest	844	-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