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 Fri Jun 12, 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
15633	2	128	0,2	chrt	15634	-21	sh	21:25:38	0
9103	2	122	0,2	chrt	9106	-21	tr	22:52:15	0
24027	2	121	0,2	chrt	24019	-21	ps	22:26:10	0
9589	2	119	0,2	chrt	9586	-21	ntpq	23:41:32	0
6901	2	117	0,3	chrt	6899	-21	ntpq	21:12:16	0
15299	2	117	0,2	chrt	15300	-21	runrttasks	22:13:02	0
6870	2	116	0,2	chrt	6868	-21	entropy	22:00:50	0
4111	2	113	0,4	chrt	4113	-21	cut	21:56:11	0
19749	2	112	0,2	chrt	19750	-21	seq	23:08:31	0
14379	2	112	0,1	sleep0	14380	-21	seq	23:49:18	0
13555	2	112	0,2	chrt	13535	-21	ntpq	00:36:19	0
5800	2	111	0,2	chrt	5796	-21	ntpq	19:26:05	0
26305	2	111	0,2	chrt	26306	-21	sleep	20:50:59	0
23928	2	111	0,1	sleep0	23926	-21	smart_sda	21:37:22	0
23109	2	111	0,2	chrt	23106	-21	cat	19:55:03	0
7865	2	110	0,2	chrt	7863	-21	aten2.4_rfpower	19:30:24	0
12972	2	110	0,2	chrt	12971	-21	seq	22:58:13	0
7867	2	109	0,3	chrt	7868	-21	sh	00:27:43	0
4435	2	108	0,2	sleep0	4436	-21	seq	19:25:00	0
28174	2	108	0,3	chrt	28175	-21	sh	22:32:12	0
24409	2	108	0,2	sleep0	24411	-21	fschecks_count	23:15:51	0
20018	2	108	0,3	chrt	20019	-21	ssh	21:31:26	0
29257	2	107	0,3	chrt	29258	-21	cat	00:11:10	0
20863	2	107	0,2	chrt	20862	-21	cut	23:10:35	0
18883	2	103	0,2	chrt	18884	-21	sh	23:56:01	0
24563	2	101	0,2	sleep0	24564	-21	seq	20:48:47	0
18919	2	100	0,2	chrt	18920	-21	sh	19:47:10	0
31676	2	99	0,2	sleep0	31677	-21	seq	22:37:21	0
31552	2	97	0,2	sleep0	31553	-21	seq	21:49:00	0
17847	2	90	0,2	chrt	16134	-21	apt-get	22:16:56	0
623	2	86	0,2	sleep0	625	-21	cut	21:51:08	0
13395	2	85	0,2	sleep0	13397	-21	ntpq	21:21:48	0
23838	2	83	0,1	sleep0	23837	-21	seq	00:03:05	0
29585	2	76	0,2	sleep0	29586	-21	seq	20:05:25	0
7811	2	75	0,2	sleep0	7810	-21	awk	20:21:31	0
27598	90	75	7,11	cyclictest	21212	-21	ntpq	22:21:40	0
27598	90	73	9,19	cyclictest	0	-21	swapper	23:28:41	0
27598	90	73	13,16	cyclictest	0	-21	swapper	21:18:34	0
27598	90	72	4,11	cyclictest	4466	-21	ntpq	20:16:13	0
27598	90	72	11,17	cyclictest	0	-21	swapper	23:32:45	0
16741	2	71	0,1	sleep0	16737	-21	smartctl	23:52:19	0
911	2	70	0,3	sleep0	914	-21	tail	22:40:35	0
25589	2	69	0,2	sleep0	25590	-21	basename	21:40:34	0
27598	90	68	6,10	cyclictest	1467	-21	ntp_states	20:11:27	0
27598	90	68	5,11	cyclictest	29364	-21	users	19:11:29	0
27598	90	67	6,10	cyclictest	24420	-21	ntpq	19:56:07	0
27598	90	67	5,10	cyclictest	6367	-21	memory	23:37:02	0
27598	90	67	5,10	cyclictest	32725	-21	ntpq	21:01:19	0
27598	90	67	4,19	cyclictest	16074	-21	ssh	23:02:37	0
28304	2	66	0,1	sleep0	28305	-21	chrt	20:55:14	0
27598	90	66	4,11	cyclictest	20061	-21	ntpq	20:40:56	0
16135	2	65	0,2	sleep0	16136	-21	cpu	20:35:26	0
11912	2	63	0,2	sleep0	11913	-21	rm	22:07:52	0
31400	2	58	0,3	sleep0	31401	-21	smartctl	19:15:45	0
27468	2	57	0,2	sleep0	27471	-21	aten2.4_rfpower	23:20:33	0
500	2	51	0,1	sleep0	501	-21	ld	00:16:46	0
25934	2	51	12,22	sleep0	25978	-21	python3	19:06:04	0
16830	2	48	0,2	sleep0	16862	-21	basename	19:45:01	0
27598	90	47	19,21	cyclictest	0	-21	swapper	22:49:30	0
3020	2	46	0,3	sleep0	3012	-21	ssh	00:20:56	0
27598	90	44	19,16	cyclictest	27896	-21	ssh	00:09:51	0
27598	90	44	16,20	cyclictest	0	-21	swapper	00:34:58	0
27598	90	42	4,12	cyclictest	12373	-21	munin-run	20:30:03	0
27598	90	42	18,16	cyclictest	0	-21	swapper	20:31:24	0
27598	90	41	5,9	cyclictest	27421	-21	ntpq	20:00:56	0
27598	90	41	19,15	cyclictest	0	-21	swapper	21:05:23	0
11799	2	40	0,2	sleep0	11801	-21	sed	19:35:50	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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