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 highest latencies:

System rackfslot4s.osadl.org (updated Sat Jun 20, 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
23756	2	130	0,4	chrt	23757	-21	sleep	00:20:05	0
8006	2	124	0,3	chrt	8009	-21	modprobe	20:40:00	0
5085	2	122	0,2	sleep0	5086	-21	missed_timers	23:51:14	0
9090	2	115	0,2	chrt	9091	-21	chrt	21:31:27	0
18356	2	115	0,3	chrt	18359	-21	cut	20:55:45	0
15533	2	115	0,2	sleep0	15532	-21	seq	20:00:07	0
15229	2	115	0,2	chrt	15228	-21	/usr/sbin/munin	21:41:02	0
11172	2	115	0,2	chrt	11171	-21	ssh	22:23:03	0
26454	2	114	0,2	sleep0	26456	-21	cut	22:46:06	0
7219	2	113	0,3	chrt	7221	-21	cut	23:06:22	0
17980	2	113	0,2	chrt	17979	-21	/usr/sbin/munin	00:11:02	0
13496	2	113	0,2	chrt	13497	-21	sh	20:48:06	0
28214	2	112	0,2	chrt	28215	-21	sleep	19:27:20	0
10852	2	110	0,2	sleep0	10853	-21	kernelversion	23:11:09	0
10495	2	110	0,3	chrt	10496	-21	chrt	00:00:05	0
27711	2	109	0,2	chrt	27714	-21	cpu	00:25:36	0
32047	2	108	0,2	chrt	32048	-21	mii-tool	22:06:00	0
24593	2	108	0,3	chrt	24594	-21	sleep	22:43:22	0
3454	2	106	0,3	chrt	3455	-21	sh	22:11:21	0
32291	2	106	0,2	chrt	32292	-21	sleep	21:17:35	0
28139	2	106	0,1	sleep0	28140	-21	gcc	21:11:30	0
16000	2	106	0,2	chrt	15999	-21	ssh	00:07:36	0
23721	2	105	0,3	chrt	23722	-21	runrttasks	21:05:13	0
24221	2	104	0,2	chrt	24223	-21	sed	19:20:57	0
6728	2	96	0,1	sleep0	6729	-21	seq	21:28:01	0
21789	2	95	0,2	sleep0	21790	-21	chrt	23:27:23	0
10364	2	89	0,2	sleep0	10365	-21	ntpq	19:50:51	0
3142	2	87	0,2	sleep0	3143	-21	seq	19:40:12	0
29482	2	86	0,2	sleep0	29480	-21	if_can0	22:50:58	0
23556	2	86	0,2	sleep0	23557	-21	chrt	21:05:01	0
22842	2	84	0,1	sleep0	22843	-21	chrt	20:10:56	0
25502	2	83	0,2	sleep0	25504	-21	cut	21:56:27	0
2205	2	80	0,2	sleep0	2207	-21	aten2.4_rfpower	00:35:50	0
25249	2	79	0,1	sleep0	25251	-21	irqrtprio	00:21:50	0
20471	2	77	0,2	sleep0	20472	-21	chrt	21:48:49	0
13649	2	77	0,1	sleep0	13647	-21	ntp_offset	22:26:45	0
2872	2	76	0,2	sleep0	2873	-21	seq	19:39:54	0
27607	2	73	0,1	sleep0	27608	-21	seq	20:19:33	0
14415	2	73	0,2	sleep0	14416	-21	chrt	20:50:17	0
11965	2	71	0,2	sleep0	11969	-21	sed	21:36:06	0
28076	2	70	0,2	sleep0	28067	-21	ntpq	23:37:08	0
16804	90	69	32,25	cyclictest	30743	-21	apt-get	00:30:37	0
13545	2	68	0,1	sleep0	13546	-21	sh	00:04:39	0
17063	2	66	0,2	sleep0	17064	-21	fschecks_time	23:20:52	0
25316	2	65	0,2	sleep0	25318	-21	sh	23:32:52	0
16804	90	65	35,22	cyclictest	1293	-21	ssh	22:57:05	0
16804	90	63	31,23	cyclictest	29394	-21	ntpq	22:01:36	0
16804	90	60	28,22	cyclictest	29367	-21	apt-get	19:30:23	0
16804	90	60	27,13	cyclictest	2265	-21	hddtemp_smartct	20:30:39	0
16804	90	59	41,12	cyclictest	5500	-21	ssh	22:15:10	0
16804	90	59	28,22	cyclictest	1877	-21	ssh	21:21:05	0
16804	90	59	27,12	cyclictest	9215	-21	ntpq	20:40:52	0
16804	90	59	26,22	cyclictest	14596	-21	ntpq	23:16:50	0
16804	90	58	35,15	cyclictest	12432	-21	apt-get	19:55:22	0
16804	90	58	28,21	cyclictest	31313	-21	ntpq	23:41:55	0
16804	90	58	26,23	cyclictest	18027	-21	ntpq	19:10:57	0
16804	90	58	26,22	cyclictest	22435	-21	ssh	21:51:22	0
16804	90	57	35,15	cyclictest	20027	-21	apt-get	19:15:20	0
16804	90	57	32,15	cyclictest	18815	-21	apt-get	22:35:19	0
16804	90	57	31,16	cyclictest	613	-21	apt-get	23:45:24	0
16804	90	57	28,20	cyclictest	30899	-21	cron	20:25:03	0
16804	90	57	27,19	cyclictest	15959	-21	seq	22:30:45	0
16804	90	57	25,23	cyclictest	31002	-21	cat	20:25:02	0
16804	90	57	25,22	cyclictest	5073	-21	rm	23:02:31	0
16804	90	56	35,14	cyclictest	6961	-21	irqrtprio	19:45:43	0
16804	90	53	32,13	cyclictest	19154	-21	fschecks_time	20:05:37	0
16804	90	50	28,14	cyclictest	16810	-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