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 792 highest latencies:

System rackfslot4s.osadl.org (updated Sun May 03, 2026 00:44:35)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
2585	2	124	0,2	chrt	2586	-21	sleep	20:31:34	0
26864	2	120	0,3	chrt	26865	-21	runrttasks	22:00:01	0
20403	2	120	0,3	chrt	20407	-21	sed	21:00:45	0
10278	2	119	0,2	chrt	10273	-21	apt-get	21:35:13	0
17863	2	117	0,3	chrt	17862	-21	/usr/sbin/munin	00:11:14	0
31277	2	116	0,2	sleep0	31276	-21	seq	23:42:33	0
12248	2	116	0,3	chrt	12249	-21	sleep	22:26:05	0
6599	2	114	0,2	sleep0	6600	-21	chrt	21:29:50	0
21046	2	114	0,2	sleep0	21047	-21	uname	00:16:10	0
28717	2	113	0,2	chrt	28718	-21	chrt	23:39:27	0
24440	2	112	0,1	sleep0	24441	-21	chrt	22:44:53	0
4812	2	110	0,2	chrt	4815	-21	cut	20:35:44	0
831	2	109	0,2	chrt	828	-21	sshd	00:35:05	0
23640	2	105	0,2	chrt	23628	-21	ntp_states	19:22:01	0
16740	2	105	0,2	chrt	16741	-21	sleep	21:44:47	0
15620	2	102	0,2	chrt	15621	-21	sh	19:10:09	0
27701	2	101	0,2	chrt	27702	-21	hddtemp_smartct	22:00:58	0
17948	2	100	0,2	sleep0	17951	-21	tail	20:05:23	0
3379	2	97	0,2	sleep0	3380	-21	mii-tool	23:01:40	0
30096	2	97	0,2	sleep0	30098	-21	irqrtprio	21:16:14	0
8544	2	95	0,1	sleep0	8542	-21	fw_packets	22:20:54	0
7760	2	93	0,2	sleep0	7761	-21	seq	22:20:04	0
6136	2	92	0,1	sleep0	6137	-21	seq	23:54:12	0
17935	2	91	0,2	sleep0	17936	-21	cut	22:35:04	0
24063	2	90	0,2	sleep0	24064	-21	runrttasks	20:15:18	0
31720	2	87	0,2	sleep0	31722	-21	mailstats	20:26:21	0
10037	2	87	0,2	sleep0	10038	-21	seq	00:00:13	0
8654	2	86	0,2	sleep0	8653	-21	sed	23:57:20	0
26253	2	84	0,2	sleep0	26254	-21	ntp_kernel_err	19:25:57	0
25617	2	84	0,2	sleep0	25618	-21	seq	00:23:00	0
17730	2	83	0,2	sleep0	17726	-21	tune2fs	21:45:59	0
16808	2	80	0,2	sleep0	16810	-21	seq	20:55:32	0
2621	2	77	0,1	sleep0	2622	-21	seq	23:48:43	0
22696	2	77	0,2	sleep0	22697	-21	chrt	21:53:07	0
20422	2	77	0,1	sleep0	20423	-21	seq	22:38:16	0
25182	2	76	0,2	sleep0	25183	-21	seq	21:08:54	0
15499	90	76	5,10	cyclictest	11259	-21	ntpq	20:45:52	0
15499	90	76	15,17	cyclictest	3330	-21	ssh	00:38:25	0
15499	90	76	13,16	cyclictest	31194	-21	irqrtprio	22:06:04	0
29439	2	75	0,2	sleep0	29440	-21	seq	22:51:39	0
28463	2	74	0,2	sleep0	28464	-21	seq	20:21:16	0
16763	2	74	0,2	sleep0	16764	-21	irqrtprio	23:21:03	0
15499	90	74	6,20	cyclictest	1495	-21	telnet	22:10:34	0
15499	90	73	6,19	cyclictest	5875	-21	hddtemp_smartct	19:46:09	0
15499	90	73	5,11	cyclictest	1720	-21	ssh	21:22:05	0
15499	90	73	15,11	cyclictest	22500	-21	/usr/sbin/munin	23:31:01	0
15499	90	72	6,10	cyclictest	14410	-21	ntpq	20:50:56	0
15499	90	72	4,18	cyclictest	13835	-21	ntpq	23:16:31	0
15499	90	72	15,10	cyclictest	9440	-21	ssh	23:10:50	0
15499	90	72	10,18	cyclictest	8848	-21	munin-run	23:10:01	0
15499	90	71	5,20	cyclictest	18737	-21	apt-get	19:15:12	0
15499	90	71	5,19	cyclictest	21052	-21	telnet	20:10:23	0
15499	90	71	5,17	cyclictest	31743	-21	df_inode	19:35:31	0
15499	90	71	4,18	cyclictest	25842	-21	ssh	21:10:22	0
15499	90	71	13,12	cyclictest	11194	-21	munin-plugin-st	19:55:01	0
15499	90	70	5,19	cyclictest	6972	-21	ssh	21:30:30	0
15499	90	70	5,17	cyclictest	31791	-21	diskstats	22:55:46	0
15499	90	70	4,19	cyclictest	27238	-21	ssh	00:25:52	0
15499	90	70	4,11	cyclictest	13388	-21	chrt	19:57:17	0
15499	90	69	5,19	cyclictest	2024	-21	sshd	19:40:05	0
15499	90	69	4,18	cyclictest	28300	-21	apt	19:30:13	0
15499	90	69	4,16	cyclictest	19569	-21	/usr/sbin/munin	23:25:36	0
15499	90	69	4,16	cyclictest	16405	-21	ssh	00:09:51	0
12516	2	69	0,2	sleep0	12517	-21	seq	19:05:15	0
15499	90	68	5,10	cyclictest	8345	-21	ntpq	20:41:07	0
15499	90	68	3,17	cyclictest	27039	-21	rm	22:48:09	0
15499	90	68	18,10	cyclictest	15909	-21	/usr/sbin/munin	20:01:05	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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