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 the 376 highest latencies:

System rackfslot4s.osadl.org (updated Sat May 02, 2026 12:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
27906	2	125	0,2	chrt	27908	-21	fschecks_time	09:25:55	0
26474	2	124	0,3	chrt	26475	-21	runrttasks	11:49:46	0
6525	2	121	0,3	chrt	6528	-21	irqrtprio	08:00:45	0
32601	2	121	0,2	sleep0	32602	-21	runrttasks	11:10:06	0
1834	2	121	0,2	chrt	1836	-21	ssh	12:01:04	0
31411	2	119	0,2	chrt	31412	-21	sleep	11:07:31	0
17958	2	119	0,2	chrt	17948	-21	memory	11:36:15	0
20038	2	118	0,2	chrt	18279	-21	/usr/sbin/munin	10:02:17	0
14768	2	116	0,2	chrt	14767	-21	sleep	07:21:33	0
13839	2	115	0,2	chrt	13840	-21	chrt	12:19:27	0
6920	2	114	0,2	chrt	6912	-21	ps	10:31:06	0
29880	2	114	0,3	chrt	29881	-21	sleep	07:46:11	0
21232	2	112	0,3	chrt	21233	-21	sh	09:15:56	0
26748	2	111	0,2	chrt	26749	-21	/usr/sbin/munin	11:01:01	0
23512	2	111	0,3	chrt	23513	-21	sleep	07:35:59	0
6965	2	110	0,2	chrt	6964	-21	awk	07:10:24	0
25122	2	109	0,2	sleep0	25123	-21	runrttasks	10:58:25	0
18375	2	108	0,1	sleep0	18377	-21	kernelversion	09:11:18	0
10678	2	107	0,1	sleep0	10679	-21	seq	12:14:52	0
14852	2	105	0,2	sleep0	14854	-21	cat	09:55:05	0
24517	2	103	0,2	sleep0	24518	-21	seq	12:35:29	0
21961	2	100	0,2	chrt	21962	-21	sleep	07:34:21	0
14771	2	98	0,2	chrt	14772	-21	sh	08:14:50	0
28193	2	96	0,2	sleep0	28194	-21	seq	07:44:20	0
18198	2	95	0,2	sleep0	18199	-21	cat	10:00:06	0
6770	2	90	0,1	sleep0	6771	-21	chrt	12:08:27	0
24810	2	89	0,14	sleep0	24811	-21	seq	08:30:13	0
2139	2	89	0,3	sleep0	2141	-21	chrt	09:35:55	0
28412	2	86	0,2	sleep0	28413	-21	runrttasks	11:52:03	0
25664	2	86	0,1	sleep0	25665	-21	chrt	10:11:00	0
8988	2	85	0,2	sleep0	8989	-21	chrt	08:55:58	0
508	2	85	0,2	chrt	491	-21	ntpq	07:51:09	0
9647	2	83	0,2	sleep0	9648	-21	chrt	11:24:14	0
19189	2	81	0,2	sleep0	19190	-21	chrt	10:50:00	0
28311	2	80	0,2	sleep0	28309	-21	apt	10:15:11	0
13559	2	78	0,2	sleep0	13562	-21	cut	10:41:03	0
13005	2	77	0,2	sleep0	13006	-21	chrt	11:29:21	0
6725	90	74	6,57	cyclictest	3216	-21	ssh	10:25:57	0
6725	90	74	5,47	cyclictest	6313	-21	ntpq	09:41:41	0
18197	2	74	0,2	sleep0	18200	-21	cut	08:20:01	0
6725	90	73	7,56	cyclictest	31031	-21	apt-get	08:40:19	0
6725	90	73	5,56	cyclictest	20589	-21	ssh	11:40:44	0
727	2	72	0,2	sleep0	728	-21	collect2	10:21:47	0
6725	90	72	9,45	cyclictest	31053	-21	irqrtprio	11:56:04	0
6725	90	72	7,54	cyclictest	19350	-21	apt-get	10:50:20	0
6725	90	72	6,55	cyclictest	10637	-21	ps	07:15:43	0
14832	2	72	0,2	sleep0	14833	-21	tune2fs	12:20:49	0
6725	90	71	6,56	cyclictest	10934	-21	runrttasks	10:36:54	0
6725	90	71	6,54	cyclictest	31588	-21	sleep	09:31:10	0
6725	90	71	5,54	cyclictest	8234	-21	apt-get	09:45:21	0
6725	90	71	5,46	cyclictest	19205	-21	ntpq	12:26:59	0
6725	90	71	4,58	cyclictest	18189	-21	apt-get	08:20:20	0
6725	90	71	4,47	cyclictest	22799	-21	ssh	10:06:17	0
6725	90	70	4,57	cyclictest	21692	-21	seq	12:31:02	0
6725	90	70	4,57	cyclictest	2002	-21	df	08:45:28	0
6725	90	69	7,51	cyclictest	11013	-21	apt-get	09:00:20	0
6725	90	69	6,50	cyclictest	4777	-21	apt-get	08:50:19	0
6725	90	69	5,53	cyclictest	25390	-21	ntpq	09:21:44	0
6725	90	69	4,55	cyclictest	29407	-21	smart_sda	08:36:25	0
6083	2	69	0,2	sleep0	6084	-21	sh	11:18:42	0
6725	90	68	5,50	cyclictest	21702	-21	apt-get	08:25:14	0
6725	90	68	5,44	cyclictest	2604	-21	apt-get	07:55:12	0
6725	90	68	4,55	cyclictest	14479	-21	diskstats	09:05:33	0
6725	90	68	4,53	cyclictest	13658	-21	aten2.4_rfpower	11:30:32	0
6725	90	67	6,52	cyclictest	11747	-21	latency_hist	08:10:03	0
6725	90	66	4,54	cyclictest	16647	-21	fschecks_time	07:25:36	0
6725	90	60	5,46	cyclictest	6770	-21	wc	07:10:04	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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