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 Fri Sep 04, 2026 12:44:34)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
11340	2	124	0,3	chrt	11341	-21	chrt	12:26:24	0
25438	2	122	0,2	chrt	25440	-21	runrttasks	07:50:39	0
24541	2	122	0,2	chrt	24542	-21	chrt	08:40:51	0
20696	2	121	0,2	chrt	20701	-21	sleep	10:15:05	0
28059	2	119	0,2	chrt	28050	-21	ntpq	09:36:54	0
5903	2	118	0,3	chrt	5905	-21	aten2.4_rfpower	11:30:36	0
23048	2	118	0,2	sleep0	23060	-21	latency_hist	09:30:03	0
14295	2	118	0,3	chrt	14293	-21	ld	09:16:21	0
27520	2	117	0,2	chrt	27521	-21	cut	08:45:47	0
10930	2	115	0,1	sleep0	10931	-21	seq	10:48:54	0
469	2	112	0,2	sleep0	472	-21	fschecks_count	12:10:49	0
12115	2	112	0,2	chrt	12119	-21	modprobe	11:40:01	0
30942	2	110	0,1	sleep0	30943	-21	ls	09:41:08	0
22652	2	110	0,2	sleep0	22654	-21	load	11:06:08	0
13024	2	110	0,2	chrt	13023	-21	cat	11:40:59	0
6613	2	108	0,3	chrt	6614	-21	sleep	07:21:13	0
13054	2	106	0,3	chrt	13055	-21	sleep	08:22:24	0
5254	2	100	0,2	chrt	5255	-21	sh	07:18:27	0
9097	2	98	0,2	sleep0	9098	-21	chrt	12:23:09	0
17416	2	98	0,2	sleep0	17417	-21	stty	08:30:23	0
4996	2	94	0,2	sleep0	4997	-21	chrt	10:40:16	0
24970	2	92	0,2	sleep0	24971	-21	seq	11:59:02	0
29427	2	91	0,2	sleep0	29431	-21	chrt	10:27:20	0
18477	2	89	0,2	sleep0	18478	-21	munin-plugin-st	07:40:00	0
16712	2	89	0,1	sleep0	16714	-21	grep	11:46:07	0
2166	2	85	0,2	sleep0	2167	-21	seq	09:46:43	0
30071	2	84	0,1	sleep0	30072	-21	seq	08:50:33	0
17979	2	84	0,1	sleep0	17977	-21	kernelversion	09:21:59	0
18890	2	82	0,2	sleep0	18891	-21	seq	12:37:51	0
12901	2	82	0,2	sleep0	12903	-21	grep	07:30:34	0
9389	2	81	0,2	sleep0	9392	-21	tr	08:16:23	0
6551	2	81	0,1	sleep0	6554	-21	idleruntime-cro	12:20:00	0
5305	2	81	0,2	sleep0	5306	-21	chrt	11:29:34	0
31125	2	80	0,2	sleep0	31127	-21	cpuspeed	10:30:34	0
24056	2	77	0,2	sleep0	24061	-21	sed	09:31:02	0
32467	2	76	0,3	sleep0	32470	-21	cut	11:21:06	0
9477	2	74	0,2	sleep0	9479	-21	head	07:25:24	0
20805	2	74	0,2	sleep0	20806	-21	grep	11:52:17	0
31533	2	73	9,53	sleep0	31537	-21	sleep	07:08:37	0
27093	2	70	0,2	sleep0	27096	-21	irqrtprio	12:01:52	0
25733	2	70	0,1	sleep0	25734	-21	chrt	10:22:00	0
22165	2	69	0,2	sleep0	22166	-21	ssh	10:16:35	0
17532	2	66	0,2	sleep0	17533	-21	chrt	10:58:52	0
6028	2	65	0,2	sleep0	6030	-21	cat	09:52:22	0
14569	2	65	0,2	sleep0	14570	-21	collect2	12:31:15	0
19300	2	54	0,2	sleep0	19302	-21	if_eth0	07:40:41	0
29046	2	53	0,2	sleep0	29047	-21	ntpq	07:55:53	0
32113	90	52	19,25	cyclictest	0	-21	swapper	08:26:27	0
32113	90	51	19,24	cyclictest	0	-21	swapper	09:59:21	0
12519	2	51	0,3	sleep0	12517	-21	ssh	10:02:14	0
28917	2	50	0,2	sleep0	28918	-21	if_eth0	11:15:59	0
32113	90	49	19,22	cyclictest	0	-21	swapper	10:54:02	0
3213	2	47	4,34	sleep0	3203	-21	ssh	10:37:00	0
32113	90	47	17,23	cyclictest	0	-21	swapper	11:10:15	0
31700	2	47	0,2	sleep0	31701	-21	chrt	08:00:40	0
32113	90	46	19,20	cyclictest	0	-21	swapper	10:08:25	0
11381	2	45	2,36	sleep0	11368	-21	ssh	09:12:12	0
29287	2	44	0,1	sleep0	29290	-21	cut	12:05:31	0
32113	90	43	11,15	cyclictest	0	-21	swapper	08:58:44	0
18325	2	43	2,33	sleep0	18226	-21	apt-get	11:00:27	0
32113	90	42	7,28	cyclictest	20738	-21	df_inode	08:35:33	0
32113	90	42	15,9	cyclictest	3468	-21	/usr/sbin/munin	09:00:42	0
32113	90	41	4,10	cyclictest	5207	-21	seq	08:10:31	0
32113	90	40	4,28	cyclictest	7735	-21	ntpq	09:06:04	0
32113	90	40	13,11	cyclictest	23412	-21	/usr/sbin/munin	07:46:29	0
32113	90	39	4,10	cyclictest	971	-21	ntpq	07:11:05	0
32113	90	38	6,11	cyclictest	2861	-21	ntpq	08:05:59	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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