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 Thu Feb 19, 2026 00:43:46)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1075791	99	692	295,395	cyclictest	0	-21	swapper/1	20:01:59	1
1075810	99	534	66,467	cyclictest	0	-21	swapper/6	21:41:37	12
1075810	99	533	16,516	cyclictest	0	-21	swapper/6	22:25:37	12
1075799	99	522	8,513	cyclictest	0	-21	swapper/3	19:35:37	9
1075837	99	517	3,513	cyclictest	0	-21	swapper/12	23:48:36	4
1075818	99	507	22,44	cyclictest	0	-21	swapper/8	00:10:36	14
1075818	99	505	32,45	cyclictest	0	-21	swapper/8	22:01:37	14
1075818	99	489	22,27	cyclictest	0	-21	swapper/8	22:57:37	14
1075818	99	489	22,27	cyclictest	0	-21	swapper/8	22:57:37	14
1075848	99	481	480,1	cyclictest	1261342	-21	kworker/15:0+i915-unordered	22:57:37	7
1075848	99	481	480,1	cyclictest	1261342	-21	kworker/15:0+i915-unordered	22:57:37	7
1075810	99	481	12,468	cyclictest	0	-21	swapper/6	22:53:37	12
1075810	99	481	12,468	cyclictest	0	-21	swapper/6	22:53:37	12
1075791	99	477	0,476	cyclictest	0	-21	swapper/1	19:56:37	1
1075818	99	476	36,0	cyclictest	0	-21	swapper/8	19:55:37	14
1075804	99	474	16,58	cyclictest	0	-21	swapper/4	00:14:59	10
1075833	99	473	472,1	cyclictest	1092498	-21	kworker/11:1+i915-unordered	19:35:37	3
1075799	99	472	472,0	cyclictest	0	-21	swapper/3	19:48:37	9
1075808	99	471	470,1	cyclictest	0	-21	swapper/5	20:07:37	11
1075808	99	471	470,1	cyclictest	0	-21	swapper/5	20:07:37	11
1075823	99	470	468,1	cyclictest	1213176	-21	kworker/9:1+i915-unordered	22:00:37	15
1075823	99	470	440,30	cyclictest	0	-21	swapper/9	22:16:37	15
1075818	99	469	14,454	cyclictest	0	-21	swapper/8	19:53:37	14
1075818	99	466	10,454	cyclictest	0	-21	swapper/8	21:30:37	14
1075804	99	465	464,1	cyclictest	1293489	-21	kworker/4:1+i915-unordered	23:48:36	10
1075823	99	463	461,1	cyclictest	1173033	-21	kworker/9:0+i915-unordered	21:25:37	15
1075841	99	462	7,58	cyclictest	0	-21	swapper/13	23:53:59	5
1075808	99	460	459,1	cyclictest	0	-21	swapper/5	22:40:37	11
1075837	99	459	458,1	cyclictest	1136723	-21	kworker/12:0+i915-unordered	20:40:37	4
1075808	99	459	457,2	cyclictest	1180971	-21	kworker/5:1+i915-unordered	21:27:37	11
1075808	99	457	456,0	cyclictest	1261692	-21	kworker/5:1+i915-unordered	23:17:36	11
1075815	99	456	455,1	cyclictest	0	-21	swapper/7	21:48:37	13
1075804	99	456	32,28	cyclictest	0	-21	swapper/4	21:15:59	10
1075833	99	455	455,0	cyclictest	0	-21	swapper/11	19:47:37	3
1075804	99	455	28,30	cyclictest	0	-21	swapper/4	20:38:59	10
1075815	99	449	25,30	cyclictest	0	-21	swapper/7	22:29:32	13
1075804	99	449	449,0	cyclictest	0	-21	swapper/4	21:21:37	10
1075791	99	449	23,30	cyclictest	0	-21	swapper/1	22:39:32	1
1075837	99	447	446,1	cyclictest	1193004	-21	kworker/12:0+i915-unordered	21:35:37	4
1075837	99	447	445,2	cyclictest	1233214	-21	kworker/12:2+i915-unordered	22:46:37	4
1075837	99	446	445,1	cyclictest	1305778	-21	kworker/12:0+i915-unordered	00:10:36	4
1075828	99	446	0,26	cyclictest	0	-21	swapper/10	23:09:21	2
1075804	99	446	22,30	cyclictest	0	-21	swapper/4	21:35:37	10
1075791	99	446	444,2	cyclictest	1226617	-21	kworker/1:1+i915-unordered	22:16:37	1
1075841	99	445	20,30	cyclictest	0	-21	swapper/13	22:09:58	5
1075833	99	444	21,29	cyclictest	0	-21	swapper/11	22:47:36	3
1075815	99	444	23,30	cyclictest	0	-21	swapper/7	20:15:37	13
1075810	99	444	23,420	cyclictest	0	-21	swapper/6	23:28:59	12
1075818	99	443	2,441	cyclictest	0	-21	swapper/8	20:52:37	14
1075791	99	443	442,1	cyclictest	0	-21	swapper/1	22:00:37	1
1075799	99	442	438,3	cyclictest	1801	-21	snmpd	19:59:49	9
1075799	99	441	439,2	cyclictest	0	-21	swapper/3	20:52:37	9
1075791	99	441	440,1	cyclictest	1313859	-21	kworker/1:1+i915-unordered	00:08:36	1
1075818	99	440	13,426	cyclictest	0	-21	swapper/8	00:07:36	14
1075815	99	439	24,29	cyclictest	0	-21	swapper/7	22:04:32	13
1075804	99	439	14,30	cyclictest	0	-21	swapper/4	19:53:37	10
1075818	99	438	20,29	cyclictest	0	-21	swapper/8	23:11:22	14
1075818	99	438	16,421	cyclictest	0	-21	swapper/8	21:50:37	14
1075815	99	438	437,1	cyclictest	0	-21	swapper/7	22:57:37	13
1075815	99	438	437,1	cyclictest	0	-21	swapper/7	22:57:37	13
1075808	99	438	0,437	cyclictest	0	-21	swapper/5	21:45:31	11
1075833	99	437	15,30	cyclictest	0	-21	swapper/11	00:31:36	3
1075823	99	437	436,1	cyclictest	0	-21	swapper/9	00:08:36	15
1075808	99	437	434,2	cyclictest	1289562	-21	kworker/5:2+events	23:41:58	11
1075848	99	436	434,1	cyclictest	1205277	-21	kworker/15:0+i915-unordered	21:53:37	7
1075804	99	436	14,29	cyclictest	0	-21	swapper/4	23:58:00	10
1075804	99	436	13,29	cyclictest	0	-21	swapper/4	23:31:59	10
1075804	99	436	13,29	cyclictest	0	-21	swapper/4	22:52:00	10
1075804	99	436	13,29	cyclictest	0	-21	swapper/4	22:52:00	10
1075804	99	436	13,29	cyclictest	0	-21	swapper/4	22:46:00	10
1075841	99	435	8,29	cyclictest	0	-21	swapper/13	21:43:01	5
1075841	99	435	12,30	cyclictest	0	-21	swapper/13	22:52:58	5
1075841	99	435	12,30	cyclictest	0	-21	swapper/13	22:52:58	5
1075818	99	435	13,29	cyclictest	0	-21	swapper/8	21:10:23	14
1075815	99	435	10,29	cyclictest	0	-21	swapper/7	23:19:32	13
1075791	99	435	16,29	cyclictest	0	-21	swapper/1	21:56:36	1
1075833	99	434	18,30	cyclictest	0	-21	swapper/11	20:47:37	3
1075804	99	434	9,29	cyclictest	0	-21	swapper/4	20:06:58	10
1075804	99	434	9,29	cyclictest	0	-21	swapper/4	20:06:58	10
1075841	99	433	430,3	cyclictest	1801	-21	snmpd	19:25:12	5
1075837	99	433	432,1	cyclictest	1156805	-21	kworker/12:2+i915-unordered	21:30:37	4
1075799	99	433	7,425	cyclictest	0	-21	swapper/3	21:36:37	9
1075788	99	433	432,1	cyclictest	697	50	irq/159-i915	23:48:36	0
1075845	99	432	431,1	cyclictest	0	-21	swapper/14	22:08:50	6
1075841	99	432	7,30	cyclictest	0	-21	swapper/13	20:17:19	5
1075818	99	432	9,422	cyclictest	0	-21	swapper/8	19:26:24	14
1075841	99	430	9,29	cyclictest	0	-21	swapper/13	21:16:20	5
1075841	99	430	7,30	cyclictest	0	-21	swapper/13	20:03:22	5
1075818	99	430	12,29	cyclictest	0	-21	swapper/8	20:39:59	14
1075804	99	430	2,30	cyclictest	0	-21	swapper/4	00:07:00	10
1075788	99	430	429,1	cyclictest	697	50	irq/159-i915	22:17:37	0
1075788	99	429	425,4	cyclictest	0	-21	swapper/0	22:24:59	0
1075841	99	427	427,0	cyclictest	1801	-21	snmpd	21:52:34	5
1075828	99	426	0,27	cyclictest	0	-21	swapper/10	22:37:23	2
1075828	99	426	0,27	cyclictest	0	-21	swapper/10	19:15:19	2
1075804	99	426	4,421	cyclictest	0	-21	swapper/4	23:21:36	10
1075804	99	426	28,395	cyclictest	0	-21	swapper/4	20:11:21	10
1075804	99	426	28,395	cyclictest	0	-21	swapper/4	20:11:21	10
1075841	99	425	423,2	cyclictest	0	-21	swapper/13	21:10:00	5
1075828	99	425	0,424	cyclictest	0	-21	swapper/10	00:22:59	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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