OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, slot #5

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 SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack0slot5.osadl.org (updated Sat Mar 07, 2026 00:43:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
491944	99	561	16,44	cyclictest	0	-21	swapper/4	19:57:07	10
491936	99	535	0,533	cyclictest	0	-21	swapper/2	21:43:07	8
491986	99	521	519,2	cyclictest	668636	-21	kworker/14:1+i915-unordered	22:50:07	6
491949	99	521	36,485	cyclictest	0	-21	swapper/5	00:10:07	11
491963	99	515	14,500	cyclictest	0	-21	swapper/9	21:12:07	15
491978	99	512	511,1	cyclictest	564261	-21	kworker/12:5+i915-unordered	22:20:07	4
491978	99	511	511,0	cyclictest	655827	-21	kworker/12:4+i915-unordered	23:03:07	4
491983	99	505	17,487	cyclictest	0	-21	swapper/13	21:32:07	5
491986	99	503	3,499	cyclictest	0	-21	swapper/14	00:16:07	6
491986	99	501	16,484	cyclictest	0	-21	swapper/14	21:17:07	6
491986	99	491	491,0	cyclictest	661969	-21	kworker/14:0+i915-unordered	23:20:07	6
491949	99	491	460,31	cyclictest	0	-21	swapper/5	19:31:07	11
491952	99	488	20,467	cyclictest	0	-21	swapper/6	23:16:07	12
491952	99	486	19,466	cyclictest	0	-21	swapper/6	23:22:07	12
491968	99	485	17,28	cyclictest	0	-21	swapper/10	19:36:07	2
491991	99	484	483,1	cyclictest	689990	-21	kworker/15:1+i915-unordered	23:26:07	7
491986	99	477	9,467	cyclictest	0	-21	swapper/14	23:43:07	6
491986	99	477	9,467	cyclictest	0	-21	swapper/14	23:43:07	6
491978	99	477	475,2	cyclictest	512750	-21	kworker/12:5+i915-unordered	19:57:07	4
491968	99	474	474,0	cyclictest	727129	-21	kworker/10:2+i915-unordered	00:07:07	2
491968	99	473	472,0	cyclictest	500674	-21	kworker/10:0+i915-unordered	19:46:07	2
491932	99	473	472,1	cyclictest	593397	-21	kworker/1:1+i915-unordered	21:12:07	1
491960	99	472	30,441	cyclictest	0	-21	swapper/8	00:10:07	14
491978	99	471	4,466	cyclictest	0	-21	swapper/12	20:32:07	4
491955	99	471	469,2	cyclictest	0	-21	swapper/7	23:26:07	13
491944	99	471	15,58	cyclictest	0	-21	swapper/4	21:10:30	10
491944	99	470	15,59	cyclictest	0	-21	swapper/4	21:16:54	10
491930	99	467	20,58	cyclictest	0	-21	swapper/0	23:04:30	0
491983	99	465	14,58	cyclictest	0	-21	swapper/13	20:33:07	5
491968	99	463	461,2	cyclictest	573339	-21	kworker/10:2+i915-unordered	21:43:07	2
491968	99	462	460,2	cyclictest	500674	-21	kworker/10:0+i915-unordered	19:30:07	2
491936	99	461	6,58	cyclictest	0	-21	swapper/2	23:02:30	8
491968	99	459	6,59	cyclictest	0	-21	swapper/10	21:59:03	2
491960	99	454	12,441	cyclictest	0	-21	swapper/8	19:36:07	14
491932	99	453	21,30	cyclictest	0	-21	swapper/1	22:19:50	1
491991	99	450	0,53	cyclictest	0	-21	swapper/15	22:54:31	7
491960	99	450	449,1	cyclictest	0	-21	swapper/8	23:03:07	14
491932	99	450	25,28	cyclictest	0	-21	swapper/1	22:44:53	1
491932	99	450	25,28	cyclictest	0	-21	swapper/1	21:34:29	1
491960	99	449	8,440	cyclictest	0	-21	swapper/8	23:52:07	14
491932	99	449	449,0	cyclictest	710316	-21	kworker/1:0+i915-unordered	23:48:07	1
491932	99	449	449,0	cyclictest	710316	-21	kworker/1:0+i915-unordered	23:48:07	1
491932	99	449	22,425	cyclictest	0	-21	swapper/1	00:24:50	1
491983	99	447	445,2	cyclictest	734374	-21	kworker/13:1+i915-unordered	00:10:07	5
491932	99	446	21,28	cyclictest	0	-21	swapper/1	23:14:50	1
491968	99	445	442,2	cyclictest	528913	-21	kworker/u64:1+events_unbound	20:17:07	2
491936	99	445	19,29	cyclictest	0	-21	swapper/2	23:19:30	8
491944	99	444	21,30	cyclictest	0	-21	swapper/4	22:40:07	10
491944	99	444	20,30	cyclictest	0	-21	swapper/4	20:29:31	10
491932	99	443	19,29	cyclictest	0	-21	swapper/1	19:53:30	1
491973	99	442	440,2	cyclictest	483436	-21	kworker/11:4+i915-unordered	19:13:07	3
491936	99	442	18,30	cyclictest	0	-21	swapper/2	23:31:31	8
491944	99	441	18,30	cyclictest	0	-21	swapper/4	19:34:51	10
491944	99	441	13,30	cyclictest	0	-21	swapper/4	23:16:50	10
491944	99	441	13,29	cyclictest	0	-21	swapper/4	22:31:54	10
491944	99	441	12,30	cyclictest	0	-21	swapper/4	21:39:52	10
491936	99	441	15,30	cyclictest	0	-21	swapper/2	22:10:53	8
491930	99	441	22,30	cyclictest	0	-21	swapper/0	00:12:07	0
491986	99	440	15,30	cyclictest	0	-21	swapper/14	23:34:31	6
491986	99	440	15,30	cyclictest	0	-21	swapper/14	23:34:31	6
491952	99	440	439,1	cyclictest	0	-21	swapper/6	19:45:07	12
491944	99	440	13,29	cyclictest	0	-21	swapper/4	22:02:30	10
491936	99	440	13,29	cyclictest	0	-21	swapper/2	20:21:30	8
491944	99	439	12,30	cyclictest	0	-21	swapper/4	19:16:30	10
491936	99	439	13,29	cyclictest	0	-21	swapper/2	19:51:31	8
491986	99	438	437,1	cyclictest	708869	-21	kworker/14:0+events	23:58:53	6
491983	99	438	16,29	cyclictest	0	-21	swapper/13	19:37:07	5
491973	99	438	0,437	cyclictest	0	-21	swapper/11	20:32:41	3
491960	99	438	435,2	cyclictest	706065	-21	kworker/u64:7+events_unbound	23:31:07	14
491936	99	438	10,30	cyclictest	0	-21	swapper/2	21:52:53	8
491978	99	437	437,0	cyclictest	0	-21	swapper/12	00:23:07	4
491936	99	437	15,29	cyclictest	0	-21	swapper/2	00:35:52	8
491936	99	437	10,30	cyclictest	0	-21	swapper/2	19:30:30	8
491960	99	436	10,425	cyclictest	0	-21	swapper/8	19:13:07	14
491983	99	435	15,30	cyclictest	0	-21	swapper/13	22:01:07	5
491949	99	435	433,2	cyclictest	621566	-21	kworker/5:1+i915-unordered	22:01:07	11
491944	99	435	6,30	cyclictest	0	-21	swapper/4	22:08:31	10
491940	99	435	434,1	cyclictest	1801	-21	snmpd	20:32:41	9
491936	99	434	9,29	cyclictest	0	-21	swapper/2	19:58:30	8
491936	99	434	8,29	cyclictest	0	-21	swapper/2	21:47:29	8
491936	99	434	12,30	cyclictest	0	-21	swapper/2	19:46:07	8
491986	99	433	433,0	cyclictest	661969	-21	kworker/14:0+i915-unordered	23:16:07	6
491944	99	433	8,29	cyclictest	0	-21	swapper/4	20:42:30	10
491936	99	432	6,30	cyclictest	0	-21	swapper/2	21:57:30	8
491968	99	431	430,1	cyclictest	0	-21	swapper/10	19:52:07	2
491944	99	431	4,30	cyclictest	0	-21	swapper/4	20:38:31	10
491944	99	431	3,29	cyclictest	0	-21	swapper/4	22:10:31	10
491944	99	430	3,29	cyclictest	0	-21	swapper/4	22:23:30	10
491960	99	428	427,1	cyclictest	0	-21	swapper/8	23:20:07	14
491960	99	427	426,1	cyclictest	0	-21	swapper/8	23:43:07	14
491960	99	427	426,1	cyclictest	0	-21	swapper/8	23:43:07	14
491960	99	427	425,1	cyclictest	0	-21	swapper/8	22:50:07	14
491960	99	426	424,2	cyclictest	0	-21	swapper/8	23:26:07	14
491960	99	425	423,1	cyclictest	665853	-21	kworker/8:2+i915-unordered	23:04:30	14
491930	99	425	2,30	cyclictest	0	-21	swapper/0	20:49:52	0
491968	99	424	423,1	cyclictest	506410	-21	kworker/10:1+i915-unordered	19:24:30	2
491968	99	424	0,423	cyclictest	0	-21	swapper/10	20:01:07	2
491983	99	423	422,1	cyclictest	0	-21	swapper/13	23:52:07	5
491963	99	423	421,1	cyclictest	0	-21	swapper/9	20:28:07	15
491960	99	423	422,1	cyclictest	0	-21	swapper/8	19:46:07	14
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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