OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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 Wed Apr 15, 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
27741	2	382	0,3	sleep0	27738	-21	fw_packets	07:05:27	0
25971	2	124	0,3	chrt	25965	-21	ntpq	08:46:04	0
25687	2	123	0,2	sleep0	25689	-21	irqrtprio	09:36:07	0
4899	2	122	0,2	chrt	4897	-21	/usr/sbin/munin	10:41:59	0
13529	2	122	0,2	chrt	13527	-21	irqstats	10:06:07	0
13309	2	122	0,2	sleep0	13310	-21	ssh	10:54:53	0
10664	2	122	0,3	chrt	10665	-21	cpu	07:30:24	0
18948	2	118	0,3	chrt	18946	-21	sshd	11:51:11	0
18298	2	117	0,3	chrt	18299	-21	runrttasks	10:13:30	0
13087	2	117	0,3	chrt	13088	-21	sh	09:17:15	0
2002	2	116	0,2	chrt	2003	-21	chrt	10:37:25	0
4208	2	115	0,2	sleep0	4207	-21	seq	07:20:12	0
22239	2	114	0,3	chrt	22240	-21	if_eth2	09:31:04	0
19943	2	113	0,3	chrt	19939	-21	ps	08:36:24	0
15853	2	113	0,3	chrt	15856	-21	sleep	08:30:33	0
27639	2	111	0,3	chrt	27640	-21	sleep	11:15:54	0
26755	2	110	0,2	sleep0	26760	-21	seq	11:14:56	0
7663	2	109	0,2	chrt	7662	-21	ssh	09:57:37	0
15594	2	109	0,2	sleep0	15597	-21	cpu	12:35:36	0
16213	2	107	0,2	sleep0	16216	-21	ntp_offset	09:21:46	0
21430	2	105	0,3	chrt	21431	-21	sleep	07:46:39	0
31233	2	104	0,3	chrt	31235	-21	cut	12:10:29	0
11652	2	102	0,3	chrt	11653	-21	runrttasks	12:29:47	0
20235	2	95	0,2	sleep0	20238	-21	base64	11:05:10	0
13322	2	88	0,2	sleep0	13323	-21	seq	11:42:39	0
29468	2	85	0,3	chrt	29386	-21	ntp_states	12:07:09	0
10833	2	82	0,2	sleep0	10835	-21	chrt	11:39:42	0
28212	2	78	0,2	sleep0	28213	-21	runrttasks	10:28:20	0
17408	2	78	0,2	sleep0	17412	-21	cut	07:40:43	0
1117	2	75	0,2	sleep0	1118	-21	chrt	07:15:20	0
30562	2	74	0,2	sleep0	30564	-21	awk	11:20:32	0
27557	2	74	0,1	sleep0	27559	-21	timerwakeupswit	07:56:31	0
32648	2	73	0,2	sleep0	32646	-21	vmstat	08:56:33	0
11044	2	73	0,2	sleep0	11042	-21	smart_sda	10:02:17	0
7776	2	69	0,2	sleep0	7777	-21	cat	09:10:08	0
18093	2	67	0,2	sleep0	18094	-21	chrt	11:01:17	0
23538	2	66	0,1	sleep0	23542	-21	wc	10:21:06	0
9258	2	64	0,1	sleep0	9259	-21	chrt	10:48:29	0
28372	2	63	0,2	sleep0	28374	-21	aten2.4_rfpower	09:40:35	0
2023	2	63	0,2	sleep0	2050	-21	sed	11:26:04	0
30119	2	62	0,1	sleep0	30116	-21	irqstats	10:31:03	0
22352	2	57	0,2	sleep0	22353	-21	runrttasks	11:56:18	0
20759	2	57	0,1	sleep0	20760	-21	seq	10:17:04	0
17668	2	53	0,2	sleep0	17670	-21	sort	11:50:02	0
24702	2	50	0,2	sleep0	24704	-21	head	12:00:32	0
8881	2	48	0,1	sleep0	8882	-21	chrt	08:20:02	0
5576	2	48	0,3	sleep0	5577	-21	sleep	08:14:38	0
30281	90	48	17,20	cyclictest	0	-21	swapper	09:13:45	0
12982	2	47	2,6	sleep0	12977	-21	ssh	12:31:07	0
30281	90	45	7,19	cyclictest	21036	-21	ssh	09:29:38	0
30281	90	45	22,15	cyclictest	0	-21	swapper	09:53:56	0
30281	90	45	15,21	cyclictest	0	-21	swapper	12:23:18	0
14970	2	45	0,2	sleep0	14971	-21	chrt	10:56:38	0
30786	2	44	0,2	sleep0	30787	-21	chrt	07:10:32	0
22413	2	44	0,1	sleep0	22415	-21	cut	08:40:44	0
30281	90	43	8,14	cyclictest	32522	-21	diskstats	08:05:34	0
30281	90	43	20,16	cyclictest	0	-21	swapper	09:48:37	0
30281	90	43	13,21	cyclictest	0	-21	swapper	07:25:24	0
30281	90	43	10,24	cyclictest	12367	-21	apt-get	08:26:01	0
30647	2	42	0,3	chrt	30648	-21	sh	08:54:36	0
30281	90	42	6,28	cyclictest	4967	-21	df_inode	11:30:44	0
30281	90	42	5,11	cyclictest	3396	-21	ntpq	12:16:43	0
30281	90	42	3,20	cyclictest	14004	-21	fw_packets	07:35:36	0
30281	90	42	15,17	cyclictest	22820	-21	apt-get	07:50:13	0
30281	90	40	5,28	cyclictest	2955	-21	ntp_states	09:01:18	0
30281	90	40	4,10	cyclictest	9550	-21	hddtemp_smartct	08:20:37	0
30281	90	39	7,13	cyclictest	29420	-21	diskstats	08:00:33	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2024-02-27 - 12:39