OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8
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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
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rackeslot3s.osadl.org (updated Fri May 01, 2026 00:45:19)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
332029	99	95	86,7	cyclictest	30	-21	ksoftirqd/2	20:35:03	2
332018	99	95	90,2	cyclictest	0	-21	swapper/0	19:50:02	0
332018	99	93	32,16	cyclictest	418357	-21	ssh	00:15:02	0
332018	99	88	6,10	cyclictest	420400	-21	cron	00:20:01	0
332018	99	86	4,12	cyclictest	334538	-21	modprobe	20:00:00	0
332029	99	77	3,62	cyclictest	364455	-21	ssh	22:10:02	2
332026	99	76	25,16	cyclictest	375077	-21	munin-run	22:35:01	1
332033	99	73	32,37	cyclictest	361381	-21	sh	22:03:14	3
332026	99	73	30,15	cyclictest	412048	-21	ssh	00:00:08	1
332026	99	73	28,17	cyclictest	352499	-21	sshd	21:42:39	1
332018	99	71	49,18	cyclictest	168	50	irq/134-8000000	23:05:03	0
332033	99	69	1,63	cyclictest	366129	-21	ssh	22:14:19	3
332029	99	69	1,51	cyclictest	355570	-21	ssh	21:50:01	2
332026	99	69	28,16	cyclictest	407334	-21	ssh	23:49:41	1
332029	99	67	21,10	cyclictest	30	-21	ksoftirqd/2	22:16:44	2
332026	99	67	45,18	cyclictest	334283	-21	cron	19:55:00	1
332033	99	66	2,60	cyclictest	382113	-21	ssh	22:50:56	3
332033	99	66	1,61	cyclictest	398040	-21	ssh	23:28:04	3
332033	99	66	1,61	cyclictest	388691	-21	ssh	23:06:08	3
332033	99	66	1,61	cyclictest	381397	-21	ssh	22:49:44	3
332033	99	66	1,60	cyclictest	48	-21	kcompactd0	21:55:23	3
332026	99	66	12,12	cyclictest	13	1	rcu_preempt	19:35:02	1
332033	99	65	2,59	cyclictest	391716	-21	ssh	23:13:27	3
332033	99	65	1,60	cyclictest	417573	-21	ssh	00:13:20	3
332033	99	65	1,60	cyclictest	371888	-21	ssh	22:27:26	3
332033	99	65	1,60	cyclictest	367708	-21	ssh	22:17:50	3
332033	99	65	1,59	cyclictest	353824	-21	ssh	21:45:29	3
332033	99	64	26,34	cyclictest	335656	-21	latency_hist	20:20:02	3
332033	99	64	2,59	cyclictest	423824	-21	ssh	00:27:45	3
332033	99	64	2,58	cyclictest	414488	-21	ssh	00:05:53	3
332033	99	64	1,59	cyclictest	420824	-21	ssh	00:20:35	3
332033	99	64	1,59	cyclictest	411379	-21	ssh	23:59:01	3
332033	99	64	1,59	cyclictest	408343	-21	ssh	23:51:43	3
332033	99	64	1,59	cyclictest	406408	-21	ssh	23:47:21	3
332033	99	64	1,59	cyclictest	404182	-21	ssh	23:42:07	3
332033	99	64	1,59	cyclictest	404182	-21	ssh	23:42:07	3
332033	99	64	1,59	cyclictest	378516	-21	ssh	22:42:49	3
332033	99	64	1,59	cyclictest	374272	-21	ssh	22:33:01	3
332033	99	64	1,59	cyclictest	362577	-21	ssh	22:05:40	3
332033	99	64	1,59	cyclictest	356770	-21	ssh	21:52:35	3
332033	99	64	1,59	cyclictest	345212	-21	ssh	21:25:40	3
332033	99	64	1,59	cyclictest	342926	-21	ssh	21:20:17	3
332033	99	64	1,59	cyclictest	338533	-21	ssh	21:10:15	3
332033	99	64	1,58	cyclictest	332979	-21	sshd	19:27:23	3
332026	99	64	26,15	cyclictest	379645	-21	ssh	22:45:13	1
332026	99	64	26,13	cyclictest	150	-21	pr/ttyS2	21:48:19	1
332033	99	63	2,58	cyclictest	427449	-21	ssh	00:35:55	3
332033	99	63	2,58	cyclictest	412230	-21	ssh	00:00:34	3
332033	99	63	2,57	cyclictest	392808	-21	ssh	23:15:39	3
332033	99	63	1,59	cyclictest	395852	-21	ssh	23:22:56	3
332033	99	63	1,58	cyclictest	426012	-21	sshd	00:32:47	3
332033	99	63	1,58	cyclictest	399491	-21	ssh	23:31:08	3
332033	99	63	1,58	cyclictest	387272	-21	ssh	23:02:59	3
332033	99	63	1,58	cyclictest	376537	-21	ssh	22:38:26	3
332033	99	63	1,58	cyclictest	368990	-21	ssh	22:20:28	3
332033	99	63	1,58	cyclictest	349646	-21	ssh	21:35:59	3
332033	99	63	1,58	cyclictest	347379	-21	ssh	21:30:43	3
332033	99	63	1,57	cyclictest	341340	-21	cron	21:17:01	3
332026	99	63	36,21	cyclictest	388706	-21	ssh	23:06:09	1
332026	99	63	25,8	cyclictest	369245	-21	ssh	22:21:11	1
332033	99	62	1,58	cyclictest	418659	-21	ssh	00:15:36	3
332033	99	62	1,58	cyclictest	352992	-21	ssh	21:44:01	3
332033	99	62	1,58	cyclictest	335053	-21	sshd	20:07:29	3
332033	99	62	1,57	cyclictest	401368	-21	ssh	23:35:34	3
332033	99	62	1,56	cyclictest	384156	-21	ssh	22:55:35	3
332029	99	62	18,9	cyclictest	30	-21	ksoftirqd/2	21:32:09	2
332033	99	61	1,56	cyclictest	334813	-21	sshd	20:04:47	3
332033	99	61	1,55	cyclictest	333298	-21	cut	19:35:02	3
332026	99	61	45,12	cyclictest	364766	-21	sh	22:10:46	1
332018	99	61	24,31	cyclictest	338199	-21	diskmemload	22:50:00	0
332033	99	60	1,55	cyclictest	336595	-21	sshd	20:36:46	3
332033	99	60	1,55	cyclictest	336353	-21	sshd	20:32:46	3
332033	99	60	1,54	cyclictest	48	-21	kcompactd0	20:44:48	3
332026	99	60	43,14	cyclictest	414335	-21	ssh	00:05:32	1
332026	99	60	31,21	cyclictest	403104	-21	cron	23:40:00	1
332026	99	60	23,14	cyclictest	423799	-21	ssh	00:27:32	1
332026	99	60	23,13	cyclictest	345294	-21	ssh	21:25:51	1
332018	99	60	2,3	cyclictest	13	1	rcu_preempt	22:55:00	0
332033	99	59	1,54	cyclictest	337124	-21	sshd	20:45:46	3
332033	99	59	1,54	cyclictest	337124	-21	sshd	20:45:46	3
332033	99	59	1,53	cyclictest	48	-21	kcompactd0	21:09:45	3
332029	99	59	15,11	cyclictest	30	-21	ksoftirqd/2	22:29:08	2
332026	99	59	44,12	cyclictest	427265	-21	ssh	00:35:30	1
332026	99	59	44,12	cyclictest	393449	-21	ssh	23:17:23	1
332026	99	59	41,14	cyclictest	351204	-21	cron	21:39:59	1
332018	99	59	32,11	cyclictest	394149	-21	ssh	23:19:11	0
332018	99	59	29,14	cyclictest	400521	-21	ssh	23:33:58	0
332018	99	59	1,3	cyclictest	150	-21	pr/ttyS2	21:34:45	0
332033	99	58	1,52	cyclictest	335856	-21	sshd	20:24:46	3
332033	99	58	1,51	cyclictest	48	-21	kcompactd0	20:13:09	3
332033	99	58	1,51	cyclictest	48	-21	kcompactd0	19:54:50	3
332033	99	58	1,51	cyclictest	333554	-21	munin-run	19:40:01	3
332026	99	58	43,12	cyclictest	362542	-21	ssh	22:05:34	1
332026	99	58	42,13	cyclictest	347355	-21	ssh	21:30:38	1
332033	99	57	1,52	cyclictest	332767	-21	munin-run	19:25:00	3
332033	99	57	1,51	cyclictest	48	-21	kcompactd0	21:00:52	3
332033	99	57	1,51	cyclictest	48	-21	kcompactd0	20:27:01	3
332033	99	57	1,50	cyclictest	337544	-21	cat	20:55:01	3
332029	99	57	18,7	cyclictest	30	-21	ksoftirqd/2	20:45:01	2
332029	99	57	11,14	cyclictest	339803	-21	ssh	21:13:41	2
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:33