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 Dec 04, 2025 12:44:33)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
23979	2	128	0,2	sleep0	23980	-21	find	11:32:19	0
16854	2	126	0,2	chrt	16846	-21	memory	10:21:14	0
12666	2	118	0,2	sleep0	12696	-21	cat	12:11:02	0
30548	2	117	0,2	chrt	30550	-21	find	09:47:15	0
22713	2	116	0,2	chrt	22711	-21	ssh	12:28:52	0
4982	2	113	0,2	chrt	4980	-21	aten2.4_rfpower	10:00:34	0
21570	2	111	0,2	chrt	21568	-21	pluginstate	07:26:24	0
26195	2	108	0,3	chrt	26196	-21	ssh	10:37:51	0
8787	2	105	0,2	chrt	8788	-21	sh	12:04:11	0
18768	2	101	0,2	chrt	18769	-21	sleep	11:23:05	0
12598	90	78	7,61	cyclictest	31322	-21	apt-get	08:50:17	0
10334	2	78	0,1	sleep0	10338	-21	sed	09:11:52	0
12598	90	76	17,50	cyclictest	15218	-21	ssh	11:16:41	0
31281	2	75	0,2	sleep0	31279	-21	kernelversion	07:45:46	0
31807	2	74	0,1	sleep0	31806	-21	ld	11:46:32	0
3132	2	74	0,2	sleep0	3133	-21	rm	09:56:28	0
22695	2	74	0,2	sleep0	22697	-21	cut	10:31:53	0
12598	90	73	6,57	cyclictest	19377	-21	ssh	09:27:26	0
12598	90	73	14,50	cyclictest	16303	-21	ssh	12:17:10	0
12598	90	72	12,51	cyclictest	28675	-21	seq	09:44:56	0
12598	90	72	12,41	cyclictest	4392	-21	grep	10:57:11	0
12598	90	71	6,49	cyclictest	28799	-21	apt-get	08:45:16	0
12598	90	71	6,45	cyclictest	1834	-21	irqstats	11:51:07	0
12598	90	71	5,55	cyclictest	19836	-21	ntpq	10:26:46	0
25798	2	70	0,2	sleep0	25804	-21	cut	11:36:04	0
12598	90	70	7,44	cyclictest	6470	-21	memory	08:00:46	0
12598	90	70	5,54	cyclictest	26344	-21	ssh	12:35:45	0
12598	90	70	4,56	cyclictest	2555	-21	ntpq	08:56:15	0
12598	90	70	4,55	cyclictest	22999	-21	apt-get	09:36:31	0
12598	90	70	16,44	cyclictest	8833	-21	diskmemload	11:57:20	0
12598	90	70	14,45	cyclictest	973	-21	grep	07:50:40	0
12598	90	69	7,51	cyclictest	21206	-21	apt-get	08:30:19	0
12598	90	69	6,53	cyclictest	7500	-21	/usr/sbin/munin	10:06:24	0
12598	90	69	6,53	cyclictest	15829	-21	memory	09:21:14	0
12598	90	69	6,53	cyclictest	13029	-21	apt-get	10:15:22	0
12598	90	69	4,55	cyclictest	20935	-21	ssh	11:27:01	0
12598	90	69	4,53	cyclictest	12016	-21	ssh	09:15:24	0
12598	90	68	7,50	cyclictest	17812	-21	apt-get	07:20:16	0
12598	90	68	6,53	cyclictest	8812	-21	kworker/u2:1	09:50:53	0
12598	90	68	5,54	cyclictest	19298	-21	ps	08:25:40	0
12598	90	68	4,55	cyclictest	12703	-21	ps	11:12:09	0
12598	90	68	4,44	cyclictest	10707	-21	modprobe	08:10:00	0
12598	90	68	16,44	cyclictest	3527	-21	if_can0	07:55:40	0
12598	90	68	16,43	cyclictest	21494	-21	ssh	09:31:23	0
12598	90	68	14,47	cyclictest	24183	-21	kernelversion	12:31:11	0
12598	90	68	13,48	cyclictest	31195	-21	ssh	10:46:57	0
12598	90	67	7,50	cyclictest	27055	-21	apt-get	10:40:25	0
12598	90	67	6,52	cyclictest	24531	-21	irqrtprio	08:35:42	0
12598	90	67	5,53	cyclictest	32575	-21	/usr/sbin/munin	10:50:31	0
12598	90	67	5,52	cyclictest	8439	-21	apt-get	11:05:20	0
12598	90	67	5,52	cyclictest	27848	-21	apt-get	11:40:16	0
12598	90	67	5,51	cyclictest	6424	-21	ssh	11:01:04	0
12598	90	67	5,44	cyclictest	14276	-21	hddtemp_smartct	08:16:28	0
12598	90	67	4,53	cyclictest	27220	-21	sleep	08:40:50	0
12598	90	67	4,53	cyclictest	13956	-21	proc_pri	07:11:20	0
12598	90	67	4,53	cyclictest	11891	-21	ntpq	08:11:00	0
12598	90	67	16,42	cyclictest	17779	-21	sleep	08:21:57	0
12598	90	66	7,50	cyclictest	10983	-21	ps	10:11:02	0
12598	90	66	6,51	cyclictest	7603	-21	ntpq	09:06:12	0
12598	90	66	6,49	cyclictest	9224	-21	apt-get	12:05:26	0
12598	90	66	5,53	cyclictest	893	-21	runrttasks	09:01:14	0
12598	90	66	4,53	cyclictest	24015	-21	ntp_states	07:31:15	0
12598	90	66	15,43	cyclictest	18952	-21	seq	12:21:36	0
12598	90	66	12,46	cyclictest	25361	-21	/usr/sbin/munin	07:36:22	0
12598	90	65	11,45	cyclictest	15599	-21	fschecks_count	07:15:35	0
12598	90	63	4,51	cyclictest	27928	-21	apt-get	07:40:24	0
12598	90	60	5,45	cyclictest	12655	-21	latency_hist	07:10:03	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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