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 Fri Jan 09, 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
447069	99	511	19,490	cyclictest	0	-21	swapper/9	23:50:09	15
447038	99	511	509,2	cyclictest	666498	-21	kworker/1:1+i915-unordered	23:50:09	1
447046	99	503	503,0	cyclictest	0	-21	swapper/3	22:45:09	9
447041	99	491	489,1	cyclictest	613728	-21	kworker/2:0+i915-unordered	22:35:09	8
447041	99	488	486,1	cyclictest	512579	-21	kworker/2:2+i915-unordered	20:55:09	8
447041	99	488	486,1	cyclictest	496241	-21	kworker/2:1+i915-unordered	20:28:09	8
447038	99	488	487,0	cyclictest	609696	-21	kworker/1:2+i915-unordered	22:31:09	1
447079	99	479	24,58	cyclictest	0	-21	swapper/11	21:44:52	3
447041	99	477	476,1	cyclictest	0	-21	swapper/2	22:45:09	8
447069	99	476	474,2	cyclictest	0	-21	swapper/9	23:27:09	15
447041	99	476	7,29	cyclictest	0	-21	swapper/2	22:11:09	8
447041	99	476	7,29	cyclictest	0	-21	swapper/2	22:11:09	8
447041	99	476	474,1	cyclictest	581272	-21	kworker/2:2+i915-unordered	21:57:09	8
447079	99	475	18,58	cyclictest	0	-21	swapper/11	21:37:31	3
447041	99	475	19,455	cyclictest	0	-21	swapper/2	20:08:09	8
447083	99	473	7,466	cyclictest	0	-21	swapper/12	19:30:10	4
447079	99	473	24,30	cyclictest	0	-21	swapper/11	00:23:56	3
447041	99	473	19,453	cyclictest	0	-21	swapper/2	22:31:09	8
447079	99	470	23,30	cyclictest	0	-21	swapper/11	23:12:52	3
447041	99	469	3,27	cyclictest	0	-21	swapper/2	21:37:09	8
447041	99	467	5,459	cyclictest	0	-21	swapper/2	23:27:09	8
447041	99	465	9,455	cyclictest	0	-21	swapper/2	23:50:09	8
447041	99	465	463,1	cyclictest	536654	-21	kworker/2:1+i915-unordered	21:03:09	8
447041	99	462	0,461	cyclictest	0	-21	swapper/2	22:16:09	8
447046	99	461	14,30	cyclictest	0	-21	swapper/3	00:00:09	9
447038	99	461	461,0	cyclictest	0	-21	swapper/1	22:28:09	1
447041	99	455	18,0	cyclictest	0	-21	swapper/2	00:11:09	8
447054	99	454	26,30	cyclictest	0	-21	swapper/5	23:19:05	11
447050	99	452	452,0	cyclictest	0	-21	swapper/4	21:57:55	10
447079	99	450	22,29	cyclictest	0	-21	swapper/11	00:36:31	3
447041	99	450	450,0	cyclictest	0	-21	swapper/2	19:30:10	8
447079	99	449	22,29	cyclictest	0	-21	swapper/11	20:55:53	3
447079	99	449	0,30	cyclictest	0	-21	swapper/11	00:33:09	3
447079	99	448	22,30	cyclictest	0	-21	swapper/11	19:53:52	3
447071	99	448	20,29	cyclictest	0	-21	swapper/10	00:39:04	2
447041	99	448	25,422	cyclictest	0	-21	swapper/2	00:34:31	8
447079	99	447	19,29	cyclictest	0	-21	swapper/11	20:27:54	3
447069	99	447	26,30	cyclictest	0	-21	swapper/9	22:07:09	15
447069	99	447	26,30	cyclictest	0	-21	swapper/9	22:07:09	15
447050	99	446	446,0	cyclictest	0	-21	swapper/4	23:43:31	10
447041	99	446	7,438	cyclictest	0	-21	swapper/2	22:28:09	8
447092	99	445	25,419	cyclictest	0	-21	swapper/14	00:08:53	6
447069	99	444	20,30	cyclictest	0	-21	swapper/9	20:19:05	15
447071	99	443	19,28	cyclictest	0	-21	swapper/10	00:30:09	2
447041	99	443	443,0	cyclictest	0	-21	swapper/2	23:06:09	8
447088	99	442	22,419	cyclictest	0	-21	swapper/13	23:47:31	5
447046	99	442	25,417	cyclictest	0	-21	swapper/3	00:35:09	9
447088	99	441	20,420	cyclictest	0	-21	swapper/13	23:59:54	5
447057	99	441	13,30	cyclictest	0	-21	swapper/6	22:20:09	12
447041	99	439	11,30	cyclictest	0	-21	swapper/2	20:48:09	8
447088	99	438	19,418	cyclictest	0	-21	swapper/13	23:10:53	5
447069	99	438	438,0	cyclictest	0	-21	swapper/9	22:31:09	15
447097	99	437	436,1	cyclictest	557161	-21	kworker/15:2+i915-unordered	21:27:09	7
447097	99	435	434,0	cyclictest	0	-21	swapper/15	21:19:33	7
447060	99	435	432,2	cyclictest	553231	-21	kworker/7:2+i915-unordered	21:19:33	13
447071	99	434	431,1	cyclictest	697	50	irq/159-i915	23:52:09	2
447060	99	434	434,0	cyclictest	0	-21	swapper/7	21:27:09	13
447057	99	434	431,2	cyclictest	605606	-21	kworker/u64:0+events_unbound	23:03:09	12
447046	99	434	17,417	cyclictest	0	-21	swapper/3	00:22:09	9
447041	99	434	434,0	cyclictest	0	-21	swapper/2	21:27:09	8
447038	99	434	14,419	cyclictest	0	-21	swapper/1	23:54:30	1
447041	99	432	8,30	cyclictest	0	-21	swapper/2	20:32:09	8
447092	99	431	430,1	cyclictest	1802	-21	snmpd	22:41:21	6
447092	99	429	3,30	cyclictest	0	-21	swapper/14	19:47:09	6
447065	99	429	11,418	cyclictest	0	-21	swapper/8	22:55:51	14
447065	99	429	11,417	cyclictest	0	-21	swapper/8	00:22:52	14
447092	99	428	6,422	cyclictest	0	-21	swapper/14	22:01:33	6
447092	99	428	6,422	cyclictest	0	-21	swapper/14	22:01:33	6
447088	99	428	0,427	cyclictest	0	-21	swapper/13	20:05:09	5
447083	99	428	8,416	cyclictest	0	-21	swapper/12	00:36:09	4
447092	99	427	7,419	cyclictest	0	-21	swapper/14	23:48:30	6
447092	99	427	5,421	cyclictest	0	-21	swapper/14	23:03:56	6
447057	99	427	4,30	cyclictest	0	-21	swapper/6	22:38:09	12
447092	99	426	4,421	cyclictest	0	-21	swapper/14	00:12:53	6
447041	99	426	424,1	cyclictest	682652	-21	kworker/2:0+i915-unordered	00:18:55	8
447092	99	425	422,2	cyclictest	0	-21	swapper/14	22:22:10	6
447065	99	425	419,5	cyclictest	1802	-21	snmpd	20:35:22	14
447041	99	425	25,399	cyclictest	0	-21	swapper/2	23:14:30	8
447041	99	425	0,30	cyclictest	0	-21	swapper/2	22:00:09	8
447041	99	425	0,30	cyclictest	0	-21	swapper/2	22:00:09	8
447092	99	424	4,419	cyclictest	0	-21	swapper/14	00:35:53	6
447092	99	424	422,1	cyclictest	455708	-21	kworker/14:1+pm	19:24:23	6
447083	99	423	4,418	cyclictest	0	-21	swapper/12	00:01:09	4
447083	99	423	3,419	cyclictest	0	-21	swapper/12	22:09:30	4
447083	99	423	3,419	cyclictest	0	-21	swapper/12	22:09:30	4
447069	99	423	423,0	cyclictest	0	-21	swapper/9	23:06:09	15
447092	99	422	25,397	cyclictest	0	-21	swapper/14	21:19:04	6
447088	99	422	23,398	cyclictest	0	-21	swapper/13	21:10:30	5
447088	99	422	22,399	cyclictest	0	-21	swapper/13	20:12:31	5
447057	99	422	0,30	cyclictest	0	-21	swapper/6	20:00:09	12
447071	99	421	0,30	cyclictest	0	-21	swapper/10	21:07:05	2
447065	99	421	420,1	cyclictest	1802	-21	snmpd	21:12:43	14
447097	99	420	418,1	cyclictest	622008	-21	kworker/15:2+i915-unordered	22:51:09	7
447083	99	420	22,396	cyclictest	0	-21	swapper/12	23:11:09	4
447079	99	420	420,0	cyclictest	324231	-21	kworker/11:0+i915-unordered	19:13:10	3
447041	99	420	22,397	cyclictest	0	-21	swapper/2	20:53:09	8
447038	99	420	417,3	cyclictest	678415	-21	kworker/1:2+events	00:06:52	1
447092	99	419	21,397	cyclictest	0	-21	swapper/14	20:19:31	6
447088	99	419	22,396	cyclictest	0	-21	swapper/13	00:16:54	5
447088	99	419	21,397	cyclictest	0	-21	swapper/13	21:33:53	5
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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