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 Jul 02, 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
29481	2	128	0,2	chrt	29471	-21	ssh	09:23:55	0
2795	2	116	0,2	chrt	2796	-21	fschecks_time	10:20:54	0
13128	2	115	0,2	sleep0	13129	-21	seq	12:13:13	0
17626	2	114	0,2	chrt	17627	-21	if_eth2	09:05:41	0
13417	2	114	0,2	sleep0	13418	-21	seq	09:48:10	0
27429	2	111	0,2	chrt	27430	-21	chrt	07:37:21	0
30875	2	110	0,1	sleep0	30876	-21	if_can0	09:26:04	0
28481	2	109	0,2	chrt	28482	-21	runrttasks	08:31:12	0
29867	2	108	0,1	sleep0	29866	-21	seq	12:38:37	0
20866	2	108	0,2	sleep0	20868	-21	ssh	09:11:06	0
18224	2	108	0,2	chrt	18225	-21	sleep	07:23:12	0
24611	2	107	0,3	chrt	24612	-21	seq	10:53:14	0
2143	2	107	0,2	sleep0	2191	-21	timerandwakeup	11:08:10	0
22350	2	106	0,2	sleep0	22354	-21	aten2.4_rfpower	07:30:24	0
12861	2	106	0,2	chrt	12862	-21	sh	07:15:16	0
25876	2	105	0,2	chrt	25877	-21	sleep	08:26:46	0
20296	2	105	0,3	chrt	20297	-21	sh	09:58:38	0
1873	2	105	0,2	sleep0	1879	-21	irqrtprio	09:31:05	0
3619	2	104	0,3	chrt	3620	-21	sleep	11:59:43	0
17184	2	103	0,2	chrt	17185	-21	sleep	09:54:10	0
10800	2	103	0,2	sleep0	10803	-21	irqrtprio	11:21:06	0
1257	2	102	0,2	chrt	1258	-21	sleep	07:47:29	0
8652	2	101	0,2	sleep0	8656	-21	seq	09:41:07	0
24752	2	99	0,2	sleep0	24753	-21	cat	12:30:59	0
17723	2	99	0,2	sleep0	17726	-21	grep	11:31:19	0
30313	2	98	0,2	sleep0	30314	-21	ssh	10:13:34	0
20480	2	97	0,2	sleep0	20482	-21	sh	11:35:59	0
27795	2	93	0,2	sleep0	27796	-21	chrt	10:57:55	0
23349	2	93	0,2	sleep0	23350	-21	chrt	12:28:51	0
31305	2	87	0,2	sleep0	31306	-21	chrt	11:51:51	0
26046	2	87	0,2	sleep0	26044	-21	sshd	09:18:46	0
20193	2	84	0,2	sleep0	20194	-21	seq	10:46:22	0
15899	2	80	0,2	sleep0	15900	-21	chrt	08:10:58	0
9594	90	79	17,53	cyclictest	6777	-21	sh	12:03:52	0
9594	90	75	5,13	cyclictest	13462	-21	munin-run	09:00:02	0
24617	2	75	0,2	sleep0	24616	-21	awk	10:05:34	0
9594	90	74	6,11	cyclictest	22546	-21	ntpq	10:01:42	0
9594	90	74	16,48	cyclictest	4695	-21	/usr/sbin/munin	08:45:34	0
9594	90	73	6,9	cyclictest	16330	-21	munin-run	11:30:03	0
9594	90	73	5,11	cyclictest	8464	-21	ntpq	08:50:54	0
9594	90	73	4,59	cyclictest	25105	-21	timerandwakeup	11:42:21	0
9594	90	73	4,12	cyclictest	12495	-21	ssh	10:35:38	0
9594	90	72	8,54	cyclictest	17406	-21	apt-get	12:20:14	0
9594	90	72	7,43	cyclictest	5516	-21	ssh	10:25:16	0
9594	90	72	6,56	cyclictest	806	-21	munin-run	08:40:04	0
9594	90	72	6,11	cyclictest	6010	-21	ntp_states	09:37:08	0
9594	90	72	5,8	cyclictest	16399	-21	ssh	12:18:06	0
9594	90	72	5,57	cyclictest	30932	-21	apt-get	10:16:05	0
9594	90	72	5,57	cyclictest	27673	-21	ssh	11:46:16	0
9594	90	71	7,8	cyclictest	9729	-21	apt-get	07:10:15	0
9594	90	71	6,54	cyclictest	8796	-21	apt-get	10:30:20	0
9594	90	71	5,8	cyclictest	801	-21	apt-get	08:40:17	0
9594	90	71	5,54	cyclictest	2354	-21	apt-get	07:50:19	0
9594	90	71	5,10	cyclictest	21380	-21	df_inode	08:20:30	0
9594	90	71	5,10	cyclictest	20004	-21	wc	07:25:47	0
9594	90	71	4,57	cyclictest	3653	-21	runrttasks	11:10:43	0
9594	90	71	4,57	cyclictest	11677	-21	/usr/sbin/munin	08:05:46	0
9594	90	71	4,10	cyclictest	5456	-21	chrt	07:55:12	0
9594	90	71	17,45	cyclictest	8376	-21	python3	11:17:14	0
9594	90	71	12,50	cyclictest	9660	-21	latency_hist	07:10:03	0
9594	90	70	6,10	cyclictest	29735	-21	ntpq	07:41:00	0
9594	90	70	5,56	cyclictest	13455	-21	apt-get	09:00:33	0
9594	90	70	5,12	cyclictest	7562	-21	seq	12:05:29	0
9594	90	70	5,10	cyclictest	32026	-21	/usr/sbin/munin	11:05:07	0
9594	90	70	4,9	cyclictest	18207	-21	df	08:15:27	0
9594	90	70	12,50	cyclictest	32217	-1	kworker/u3:1	10:45:01	0
9594	90	69	4,9	cyclictest	9466	-21	irqstats	08:00:46	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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