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 Tue Dec 30, 2025 00:44:36)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3503	2	120	0,3	chrt	3502	-21	ssh	00:28:09	0
25023	2	117	0,2	chrt	23541	-21	apt-get	21:46:47	0
11709	2	117	0,3	chrt	11708	-21	sleep	19:44:15	0
19487	2	115	0,3	chrt	19493	-21	sh	22:26:52	0
22793	2	114	0,2	chrt	22792	-21	seq	20:01:16	0
24811	2	113	0,2	chrt	24810	-21	ssh	00:11:19	0
3222	2	112	0,3	chrt	3223	-21	ssh	22:51:00	0
31955	2	112	0,2	chrt	31954	-21	seq	19:24:53	0
10227	2	112	0,3	chrt	10228	-21	sleep	23:01:30	0
16515	2	111	0,2	chrt	16506	-21	ntp_states	19:51:11	0
4448	2	110	0,1	sleep0	4449	-21	runrttasks	22:04:51	0
13537	2	110	0,2	chrt	13538	-21	seq	22:17:45	0
11099	2	110	0,3	chrt	11100	-21	sleep	22:14:53	0
9123	2	108	0,2	sleep0	9124	-21	chrt	23:00:09	0
30031	2	108	0,2	chrt	30032	-21	sleep	20:13:25	0
28100	2	108	0,1	sleep0	28105	-21	chrt	23:27:39	0
26914	2	108	0,2	chrt	26912	-21	cat	19:15:50	0
13768	2	107	0,2	chrt	13769	-21	cat	23:06:11	0
9695	2	104	0,2	chrt	9696	-21	smartctl	00:37:21	0
30218	2	104	0,2	chrt	30219	-21	sh	22:42:43	0
28265	2	102	0,1	sleep0	28267	-21	cut	21:51:10	0
26530	2	101	0,2	chrt	26531	-21	sh	20:07:18	0
19783	2	98	0,2	sleep0	19784	-21	chrt	00:04:43	0
18717	2	98	0,1	sleep0	18718	-21	chrt	23:14:07	0
22096	2	97	0,2	sleep0	22094	-21	ntp_offset	00:07:35	0
14118	2	97	0,2	sleep0	14119	-21	chrt	23:55:59	0
31306	2	96	0,2	sleep0	31307	-21	chrt	00:21:07	0
6720	2	95	0,2	sleep0	6723	-21	irqrtprio	19:35:45	0
27688	2	95	0,2	sleep0	27689	-21	cat	00:16:04	0
31029	2	94	0,2	sleep0	31030	-21	cat	21:06:31	0
1221	2	94	0,1	sleep0	1223	-21	mailstats	19:26:26	0
21600	2	93	0,2	sleep0	21601	-21	seq	21:41:20	0
16688	2	93	0,2	sleep0	16689	-21	seq	21:34:44	0
22112	2	83	0,2	sleep0	22113	-21	chrt	23:19:18	0
7638	2	82	0,1	sleep0	7639	-21	chrt	00:35:02	0
24491	2	82	0,2	sleep0	24492	-21	grep	23:22:17	0
6324	2	81	0,2	sleep0	6325	-21	collect2	22:07:02	0
2804	2	80	0,1	sleep0	2805	-21	runrttasks	20:21:20	0
5693	2	79	0,1	sleep0	5694	-21	seq	23:42:49	0
21760	2	78	0,2	sleep0	21761	-21	basename	22:30:35	0
7819	2	76	0,2	sleep0	7825	-21	cut	21:21:05	0
27683	2	76	0,2	sleep0	27684	-21	seq	22:39:23	0
1830	2	74	0,1	sleep0	1831	-21	rm	22:48:52	0
22522	90	72	36,15	cyclictest	9052	-21	ps	20:31:22	0
18705	2	72	0,2	sleep0	18706	-21	seq	19:55:29	0
30723	2	71	0,2	sleep0	30719	-21	telnet	21:55:35	0
18722	2	70	0,2	sleep0	18723	-21	seq	21:37:16	0
11634	2	68	0,2	sleep0	11635	-21	chrt	23:51:48	0
22522	90	67	38,21	cyclictest	489	-21	chrt	21:10:41	0
22522	90	67	33,23	cyclictest	17932	-21	ssh	22:25:07	0
20565	2	65	7,46	sleep0	20576	-21	ntpq	19:05:48	0
22522	90	64	35,14	cyclictest	605	-21	diskstats	23:35:47	0
22522	90	64	34,12	cyclictest	21280	-21	ntpq	20:51:07	0
22522	90	64	32,23	cyclictest	30431	-21	memory	23:31:14	0
22522	90	64	32,23	cyclictest	25277	-21	sshd	19:13:38	0
22522	90	64	32,14	cyclictest	3822	-21	sleep	19:30:50	0
22522	90	64	31,23	cyclictest	7848	-21	irqstats	23:46:08	0
22522	90	63	40,14	cyclictest	5895	-21	ntpq	20:26:19	0
22522	90	63	37,16	cyclictest	17017	-21	apt-get	20:45:19	0
22522	90	63	34,19	cyclictest	15175	-21	wc	19:50:03	0
22522	90	63	33,11	cyclictest	31959	-21	ntpq	20:16:04	0
22522	90	63	31,22	cyclictest	10877	-21	ssh	21:25:58	0
22522	90	62	37,16	cyclictest	3725	-21	ssh	21:15:33	0
22522	90	62	29,14	cyclictest	27374	-21	ntpq	21:00:56	0
22522	90	61	33,20	cyclictest	10788	-21	apt-get	20:35:22	0
22522	90	60	34,9	cyclictest	13912	-21	apt-get	20:40:14	0
22522	90	59	26,13	cyclictest	24079	-21	irqstats	20:55:45	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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