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 Feb 28, 2026 00:43:48)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
910713	99	559	16,29	cyclictest	0	-21	swapper/2	22:57:20	8
910713	99	543	22,520	cyclictest	0	-21	swapper/2	20:35:20	8
910732	99	533	0,28	cyclictest	0	-21	swapper/7	21:55:20	13
910732	99	518	517,1	cyclictest	979842	-21	kworker/7:2+i915-unordered	20:32:20	13
910721	99	517	17,499	cyclictest	0	-21	swapper/4	22:42:20	10
910768	99	516	17,498	cyclictest	0	-21	swapper/15	21:03:20	7
910745	99	496	495,1	cyclictest	1068464	-21	kworker/10:1+i915-unordered	22:57:20	2
910750	99	491	7,483	cyclictest	0	-21	swapper/11	22:32:20	3
910750	99	491	7,483	cyclictest	0	-21	swapper/11	22:32:20	3
910713	99	489	23,466	cyclictest	0	-21	swapper/2	19:58:20	8
910713	99	486	485,1	cyclictest	0	-21	swapper/2	19:43:20	8
910713	99	486	485,1	cyclictest	0	-21	swapper/2	19:43:20	8
910710	99	484	453,31	cyclictest	0	-21	swapper/1	21:36:20	1
910717	99	483	23,59	cyclictest	0	-21	swapper/3	19:14:06	9
910745	99	479	477,2	cyclictest	951628	-21	kworker/10:2+i915-unordered	20:35:20	2
910768	99	474	468,3	cyclictest	1040425	-21	kworker/15:1+i915-unordered	21:55:20	7
910755	99	474	472,2	cyclictest	1068520	-21	kworker/12:0+i915-unordered	22:42:20	4
910740	99	467	15,58	cyclictest	0	-21	swapper/9	20:58:03	15
910740	99	461	14,30	cyclictest	0	-21	swapper/9	21:12:04	15
910768	99	460	401,30	cyclictest	0	-21	swapper/15	20:02:20	7
910768	99	458	428,30	cyclictest	0	-21	swapper/15	20:32:20	7
910745	99	455	454,1	cyclictest	0	-21	swapper/10	20:47:20	2
910745	99	452	451,1	cyclictest	935611	-21	kworker/10:0+i915-unordered	19:43:20	2
910745	99	452	451,1	cyclictest	935611	-21	kworker/10:0+i915-unordered	19:43:20	2
910717	99	451	24,30	cyclictest	0	-21	swapper/3	21:30:05	9
910740	99	447	22,29	cyclictest	0	-21	swapper/9	22:24:42	15
910740	99	447	22,29	cyclictest	0	-21	swapper/9	22:24:42	15
910740	99	446	21,30	cyclictest	0	-21	swapper/9	22:15:42	15
910732	99	444	24,29	cyclictest	0	-21	swapper/7	21:15:20	13
910732	99	442	441,1	cyclictest	1092506	-21	kworker/7:0+i915-unordered	23:13:20	13
910740	99	441	18,30	cyclictest	0	-21	swapper/9	20:05:42	15
910740	99	441	17,29	cyclictest	0	-21	swapper/9	22:51:42	15
910755	99	440	24,29	cyclictest	0	-21	swapper/12	22:13:20	4
910750	99	440	438,2	cyclictest	0	-21	swapper/11	00:17:20	3
910740	99	440	17,30	cyclictest	0	-21	swapper/9	00:03:43	15
910740	99	440	17,28	cyclictest	0	-21	swapper/9	19:23:05	15
910740	99	440	16,30	cyclictest	0	-21	swapper/9	23:55:04	15
910740	99	440	16,30	cyclictest	0	-21	swapper/9	23:32:42	15
910740	99	440	16,29	cyclictest	0	-21	swapper/9	22:20:41	15
910740	99	440	15,29	cyclictest	0	-21	swapper/9	23:14:06	15
910721	99	440	0,3	cyclictest	0	-21	swapper/4	00:35:32	10
910710	99	440	20,28	cyclictest	0	-21	swapper/1	00:07:20	1
910740	99	439	18,30	cyclictest	0	-21	swapper/9	21:50:04	15
910740	99	439	16,30	cyclictest	0	-21	swapper/9	00:15:41	15
910740	99	439	16,29	cyclictest	0	-21	swapper/9	20:53:44	15
910740	99	439	15,30	cyclictest	0	-21	swapper/9	20:48:44	15
910740	99	438	16,29	cyclictest	0	-21	swapper/9	23:40:02	15
910740	99	438	16,29	cyclictest	0	-21	swapper/9	20:41:44	15
910740	99	438	15,30	cyclictest	0	-21	swapper/9	21:17:06	15
910740	99	438	15,30	cyclictest	0	-21	swapper/9	20:59:43	15
910740	99	438	14,29	cyclictest	0	-21	swapper/9	00:05:41	15
910755	99	436	23,30	cyclictest	0	-21	swapper/12	00:38:20	4
910740	99	436	434,1	cyclictest	1028244	-21	kworker/9:0+i915-unordered	21:36:20	15
910768	99	434	434,0	cyclictest	959613	-21	kworker/15:0+i915-unordered	20:07:20	7
910755	99	432	20,29	cyclictest	0	-21	swapper/12	21:56:20	4
910713	99	432	9,422	cyclictest	0	-21	swapper/2	23:44:16	8
910755	99	431	13,30	cyclictest	0	-21	swapper/12	00:27:20	4
910745	99	431	14,30	cyclictest	0	-21	swapper/10	00:16:20	2
910728	99	431	430,1	cyclictest	953920	-21	kworker/6:0+i915-unordered	20:00:20	12
910717	99	431	14,30	cyclictest	0	-21	swapper/3	21:37:20	9
910750	99	430	430,0	cyclictest	0	-21	swapper/11	23:04:43	3
910728	99	430	429,1	cyclictest	1008204	-21	kworker/6:0+i915-unordered	21:48:20	12
910763	99	429	427,2	cyclictest	697	50	irq/159-i915	20:00:20	6
910728	99	429	428,1	cyclictest	0	-21	swapper/6	21:36:20	12
910755	99	428	425,2	cyclictest	898032	-21	kworker/12:4+pm	19:21:56	4
910745	99	428	9,29	cyclictest	0	-21	swapper/10	19:30:20	2
910745	99	428	9,29	cyclictest	0	-21	swapper/10	19:30:20	2
910745	99	428	11,29	cyclictest	0	-21	swapper/10	21:10:20	2
910707	99	428	425,2	cyclictest	1071221	-21	kworker/u64:1+events_unbound	23:13:20	0
910763	99	427	426,1	cyclictest	697	50	irq/159-i915	21:48:20	6
910745	99	427	5,30	cyclictest	0	-21	swapper/10	23:08:20	2
910728	99	427	421,6	cyclictest	1801	-21	snmpd	23:14:32	12
910763	99	426	425,1	cyclictest	697	50	irq/159-i915	21:36:20	6
910745	99	426	426,0	cyclictest	935611	-21	kworker/10:0+i915-unordered	19:58:20	2
910728	99	426	424,1	cyclictest	992196	-21	kworker/6:1+i915-unordered	21:02:20	12
910732	99	425	4,420	cyclictest	0	-21	swapper/7	23:28:43	13
910728	99	425	422,2	cyclictest	1064492	-21	kworker/6:1+events	22:43:43	12
910721	99	425	423,1	cyclictest	869854	-21	kworker/4:0+i915-unordered	22:04:43	10
910717	99	425	5,30	cyclictest	0	-21	swapper/3	20:45:20	9
910745	99	424	7,29	cyclictest	0	-21	swapper/10	22:26:20	2
910745	99	424	7,29	cyclictest	0	-21	swapper/10	22:26:20	2
910745	99	424	423,1	cyclictest	1128807	-21	kworker/10:0+pm	23:47:33	2
910710	99	424	423,1	cyclictest	1108801	-21	kworker/1:1+pm	23:27:18	1
910768	99	423	421,2	cyclictest	931490	-21	kworker/15:2+pm	19:32:53	7
910768	99	423	421,2	cyclictest	931490	-21	kworker/15:2+pm	19:32:53	7
910763	99	423	418,4	cyclictest	0	-21	swapper/14	23:14:32	6
910745	99	423	9,30	cyclictest	0	-21	swapper/10	21:20:20	2
910732	99	423	21,401	cyclictest	0	-21	swapper/7	19:32:03	13
910732	99	423	21,401	cyclictest	0	-21	swapper/7	19:32:03	13
910732	99	423	21,399	cyclictest	0	-21	swapper/7	23:14:43	13
910760	99	422	10,411	cyclictest	0	-21	swapper/13	20:26:20	5
910728	99	422	421,1	cyclictest	0	-21	swapper/6	20:47:20	12
910721	99	422	421,1	cyclictest	0	-21	swapper/4	21:32:42	10
910710	99	422	419,2	cyclictest	994794	-21	kworker/u64:9+events_unbound	23:33:20	1
910768	99	421	420,1	cyclictest	0	-21	swapper/15	19:20:20	7
910763	99	421	421,0	cyclictest	697	50	irq/159-i915	21:02:20	6
910736	99	421	0,26	cyclictest	0	-21	swapper/8	20:32:05	14
910728	99	421	418,2	cyclictest	1007304	-21	kworker/u64:11+events_unbound	22:02:20	12
910721	99	421	421,0	cyclictest	0	-21	swapper/4	23:36:20	10
910740	99	420	9,29	cyclictest	0	-21	swapper/9	23:50:20	15
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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