OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #4

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.

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 all highest latencies:

System rackfslot4s.osadl.org (updated Thu May 14, 2026 00:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2328	2	126	0,3	chrt	2329	-21	fschecks_count	00:26:24	0
24627	2	124	0,2	chrt	23836	-21	/usr/sbin/munin	00:11:01	0
25138	2	123	0,2	chrt	25139	-21	fschecks_count	20:05:34	0
687	2	122	0,3	chrt	683	-21	aten2.4-expect	23:35:35	0
15429	2	118	0,2	sleep0	15431	-21	runrttasks	23:56:56	0
526	2	117	0,2	chrt	525	-21	gcc	19:25:58	0
22297	2	117	0,2	chrt	21616	-21	/usr/sbin/munin	20:00:43	0
24886	2	115	0,2	chrt	24885	-21	ld	20:56:21	0
18769	2	115	0,2	chrt	18768	-21	seq	23:13:34	0
9851	2	114	0,3	chrt	9852	-21	aten2.4_rfpower	23:00:34	0
6320	2	114	0,2	chrt	6321	-21	sleep	20:26:48	0
23734	2	114	0,2	chrt	23735	-21	seq	23:21:03	0
22602	2	114	0,2	chrt	22570	-21	ssh	21:42:26	0
4688	2	112	0,3	chrt	4684	-21	ps	22:52:12	0
14721	2	112	0,3	chrt	14722	-21	chrt	20:40:35	0
25583	2	111	0,3	chrt	25585	-21	sleep	19:15:03	0
25443	2	111	0,2	chrt	25444	-21	sleep	21:46:23	0
9450	2	110	0,2	sleep0	9451	-21	cat	22:11:02	0
2758	2	110	0,3	chrt	2759	-21	modprobe	22:50:01	0
19182	2	109	0,2	chrt	19183	-21	chrt	00:02:52	0
31061	2	107	0,2	chrt	31060	-21	ssh	22:43:01	0
27713	2	107	0,3	chrt	27717	-21	fschecks_time	00:15:48	0
4758	2	106	0,2	sleep0	4762	-21	sed	21:16:08	0
28603	2	105	0,1	sleep0	28604	-21	runrttasks	23:28:12	0
14682	2	104	0,3	chrt	14683	-21	sh	19:49:11	0
18514	2	98	0,2	sleep0	18516	-21	chrt	22:25:03	0
9634	2	96	0,2	sleep0	9635	-21	runrttasks	00:36:43	0
21473	2	95	0,2	sleep0	21474	-21	chrt	20:00:03	0
14866	2	95	0,2	sleep0	14867	-21	seq	22:19:29	0
6008	2	92	0,2	sleep0	6009	-21	chrt	19:35:24	0
30362	2	92	0,2	sleep0	30363	-21	cat	19:21:27	0
31987	2	90	0,2	chrt	31969	-21	ntpq	20:15:55	0
27936	2	84	0,2	chrt	27563	-21	apt-get	21:50:47	0
15174	2	84	0,1	sleep0	15175	-21	seq	19:50:12	0
27287	2	83	0,2	sleep0	27286	-21	/usr/sbin/munin	21:00:41	0
13250	2	80	0,2	sleep0	13251	-21	chrt	23:54:00	0
12342	2	80	0,2	sleep0	12345	-21	tr	21:27:19	0
22409	90	74	16,47	cyclictest	26903	-21	ssh	22:37:01	0
22409	90	73	6,56	cyclictest	12931	-21	apt-get	23:05:20	0
22409	90	72	8,54	cyclictest	30588	-21	ssh	23:31:10	0
22409	90	72	5,42	cyclictest	14154	-21	/usr/sbin/munin	21:30:36	0
22409	90	72	4,58	cyclictest	2545	-21	users	21:12:37	0
11628	2	72	0,2	sleep0	11629	-21	seq	20:35:36	0
10517	2	72	0,1	sleep0	10515	-21	threads	19:41:26	0
22409	90	71	5,46	cyclictest	6495	-21	ntpq	00:32:05	0
22409	90	71	5,46	cyclictest	5952	-21	df_inode	22:06:07	0
22409	90	71	4,57	cyclictest	1614	-21	ssh	22:00:01	0
22409	90	71	3,50	cyclictest	7174	-21	/usr/sbin/munin	21:21:07	0
22409	90	70	7,52	cyclictest	18633	-21	apt-get	22:25:20	0
22409	90	70	7,52	cyclictest	17353	-21	apt-get	20:45:17	0
22409	90	70	6,53	cyclictest	7713	-21	sleep	23:45:55	0
22409	90	70	5,56	cyclictest	20791	-21	runrttasks	23:16:19	0
22409	90	70	4,56	cyclictest	17599	-21	ssh	21:35:42	0
22409	90	70	4,46	cyclictest	3251	-21	/usr/sbin/munin	20:21:31	0
22409	90	70	4,45	cyclictest	7737	-21	ntpq	22:56:45	0
22409	90	69	7,51	cyclictest	3759	-21	apt-get	23:40:26	0
22409	90	69	6,54	cyclictest	21164	-21	rm	00:05:54	0
22409	90	69	5,54	cyclictest	412	-21	snmpd	22:30:47	0
22409	90	69	4,56	cyclictest	28180	-21	chrt	20:10:31	0
22409	90	69	4,53	cyclictest	3498	-21	ntpq	22:02:07	0
22409	90	69	3,56	cyclictest	2739	-21	apt-get	19:31:05	0
30128	2	68	0,2	sleep0	30129	-21	seq	21:05:30	0
22409	90	68	6,50	cyclictest	25640	-21	apt-get	19:15:13	0
22409	90	68	5,44	cyclictest	11041	-21	sleep	20:35:02	0
22409	90	67	5,51	cyclictest	20439	-21	apt-get	20:50:18	0
22409	90	67	4,54	cyclictest	31886	-21	ntpq	00:21:33	0
22409	90	63	11,43	cyclictest	22459	-21	latency_hist	19:10:03	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2024-02-27 - 12:39