OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #7, slot #2

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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 792 highest latencies:

System rack7slot2.osadl.org (updated Thu Dec 25, 2025 00:44:12)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
201703	99	110	69,30	cyclictest	53	-21	kswapd0	22:55:12	0
201703	99	84	76,6	cyclictest	405482	-21	kworker/u4:4+events_unbound	00:38:54	0
201707	99	79	70,6	cyclictest	327242	-21	kworker/u4:7+events_unbound	23:18:29	1
201703	99	75	47,24	cyclictest	53	-21	kswapd0	21:55:11	0
201707	99	73	65,6	cyclictest	202923	-21	kworker/u4:8+events_unbound	20:50:01	1
201703	99	72	63,6	cyclictest	237593	-21	grep	21:15:21	0
201707	99	62	53,6	cyclictest	284359	-21	ld	22:10:26	1
201703	99	61	40,18	cyclictest	260637	-21	kworker/u4:0+rpciod	21:45:00	0
201707	99	59	49,7	cyclictest	397099	-21	kworker/u4:0+events_unbound	00:28:42	1
201707	99	59	49,7	cyclictest	348152	-21	kworker/u4:17+events_unbound	23:27:39	1
201707	99	59	46,9	cyclictest	53	-21	kswapd0	23:40:00	1
201707	99	59	33,5	cyclictest	269238	-21	kworker/u4:1+events_unbound	21:57:21	1
201703	99	58	6,38	cyclictest	288627	-21	sh	22:15:33	0
201707	99	57	37,14	cyclictest	267588	-21	ssh	21:50:28	1
201703	99	57	48,6	cyclictest	392934	-21	kworker/u4:10+events_unbound	00:30:22	0
201703	99	56	44,7	cyclictest	370296	-21	ssh	23:55:10	0
201707	99	55	47,6	cyclictest	374679	-21	cpu	00:00:21	1
201707	99	55	47,6	cyclictest	273488	-21	kworker/u4:12+events_unbound	22:02:01	1
201707	99	55	20,8	cyclictest	242055	-21	ntpq	21:20:23	1
201707	99	54	45,7	cyclictest	335575	-21	kworker/u4:10+events_unbound	23:20:34	1
201707	99	54	42,10	cyclictest	0	-21	swapper/1	00:15:32	1
201707	99	54	36,14	cyclictest	233845	-21	ps	21:10:38	1
201707	99	54	36,14	cyclictest	233845	-21	ps	21:10:38	1
201707	99	54	14,14	cyclictest	366966	-21	ntpq	23:50:31	1
201703	99	54	33,19	cyclictest	390955	-21	aten2__	00:20:14	0
201707	99	53	45,6	cyclictest	288743	-21	/usr/sbin/munin	22:15:36	1
201707	99	53	38,11	cyclictest	403874	-21	netstat	00:35:22	1
201707	99	53	37,11	cyclictest	1058	-21	snmpd	20:15:11	1
201707	99	53	14,12	cyclictest	292789	-21	ntpq	22:20:34	1
201707	99	52	43,6	cyclictest	316901	-21	ssh	22:50:17	1
201707	99	52	43,6	cyclictest	316901	-21	ssh	22:50:16	1
201707	99	52	40,10	cyclictest	1058	-21	snmpd	22:46:42	1
201707	99	52	32,15	cyclictest	309355	-21	ntpq	22:40:30	1
201703	99	52	45,5	cyclictest	330326	-21	/usr/sbin/munin	23:05:39	0
201703	99	52	45,5	cyclictest	203012	-21	apt-config	19:15:01	0
201703	99	52	45,4	cyclictest	0	-21	swapper/0	22:35:19	0
201707	99	51	44,5	cyclictest	322169	-21	sh	22:55:45	1
201707	99	51	44,5	cyclictest	298428	-21	ssh	22:27:26	1
201707	99	51	43,5	cyclictest	201700	-21	cyclictest	23:55:06	1
201707	99	51	36,11	cyclictest	217896	-21	ntpq	20:10:26	1
201703	99	51	44,4	cyclictest	383045	-21	sh	00:10:21	0
201703	99	51	40,8	cyclictest	390704	-21	latency_hist	00:20:01	0
201703	99	51	2,37	cyclictest	263379	-21	ntpq	21:45:29	0
201703	99	51	18,24	cyclictest	256	50	irq/23-42890000.ethernet	20:50:10	0
201707	99	50	41,6	cyclictest	252025	-21	kworker/u4:12+events_unbound	21:32:14	1
201707	99	50	40,7	cyclictest	262940	-21	basename	21:45:19	1
201707	99	50	35,5	cyclictest	391787	-21	ntpq	00:20:34	1
201707	99	50	35,11	cyclictest	208971	-21	ntpq	19:35:33	1
201703	99	50	43,4	cyclictest	220218	-21	fschecks_count	20:20:19	0
201703	99	50	42,6	cyclictest	247926	-21	systemd	21:27:12	0
201703	99	50	40,7	cyclictest	230021	-21	cron	21:00:01	0
201703	99	50	39,9	cyclictest	349836	-21	aten2__	23:30:16	0
201703	99	50	38,9	cyclictest	0	-21	swapper/0	21:10:30	0
201703	99	50	38,9	cyclictest	0	-21	swapper/0	21:10:29	0
201707	99	49	41,6	cyclictest	222275	-21	systemd	20:27:03	1
201707	99	49	41,5	cyclictest	221014	-21	kworker/u4:11+events_unbound	20:55:00	1
201707	99	49	34,10	cyclictest	329521	-21	ssh	23:05:18	1
201707	99	49	33,11	cyclictest	216633	-21	ntpq	20:05:33	1
201707	99	49	31,14	cyclictest	1058	-21	snmpd	21:02:55	1
201707	99	49	29,16	cyclictest	254779	-21	sh	21:35:23	1
201703	99	49	43,5	cyclictest	360058	-21	kworker/u4:10+events_unbound	23:46:42	0
201703	99	49	37,8	cyclictest	241899	-21	gltestperf	21:20:20	0
201703	99	49	35,11	cyclictest	256	50	irq/23-42890000.ethernet	21:50:32	0
201707	99	48	41,5	cyclictest	305230	-21	/usr/sbin/munin	22:35:33	1
201707	99	48	41,5	cyclictest	206370	-21	ntp_kernel_pll_	19:25:24	1
201707	99	48	36,8	cyclictest	203130	-21	latency_hist	19:15:01	1
201707	99	48	34,10	cyclictest	203768	-21	ntpq	19:15:28	1
201707	99	48	32,11	cyclictest	362746	-21	ssh	23:45:26	1
201707	99	48	27,17	cyclictest	258981	-21	ssh	21:40:23	1
201707	99	48	14,11	cyclictest	279442	-21	apt-get	22:05:13	1
201707	99	48	13,10	cyclictest	249029	-21	ssh	21:29:06	1
201707	99	48	12,12	cyclictest	349702	-21	ssh	23:30:07	1
201703	99	48	35,8	cyclictest	382309	-21	ssh	00:09:57	0
201703	99	48	27,18	cyclictest	0	-21	swapper/0	23:00:36	0
201703	99	48	26,19	cyclictest	0	-21	swapper/0	23:15:03	0
201707	99	47	33,11	cyclictest	220546	-21	ntpq	20:20:30	1
201707	99	47	16,9	cyclictest	360849	-21	ssh	23:43:20	1
201707	99	47	15,9	cyclictest	326930	-21	ssh	23:01:30	1
201707	99	47	14,10	cyclictest	336414	-21	ssh	23:13:43	1
201707	99	47	12,11	cyclictest	237141	-21	apt-get	21:15:15	1
201703	99	47	8,17	cyclictest	15	1	ktimers/0	23:50:30	0
201703	99	47	40,5	cyclictest	251067	-21	timerwakeupswit	21:30:39	0
201703	99	47	38,6	cyclictest	204547	-21	aten2__	19:20:15	0
201703	99	47	36,8	cyclictest	0	-21	swapper/0	22:05:11	0
201703	99	47	36,7	cyclictest	304149	-21	kworker/u4:0	22:35:00	0
201703	99	47	26,18	cyclictest	0	-21	swapper/0	22:55:03	0
201703	99	47	26,18	cyclictest	0	-21	swapper/0	22:55:02	0
201707	99	46	40,4	cyclictest	226118	-21	kworker/u4:2+events_unbound	21:09:59	1
201707	99	46	39,5	cyclictest	222766	-21	fschecks_time	20:30:20	1
201707	99	46	32,10	cyclictest	301249	-21	ps	22:30:43	1
201707	99	46	29,11	cyclictest	379406	-21	ntpq	00:05:35	1
201707	99	46	12,11	cyclictest	383941	-21	users	00:10:42	1
201707	99	46	12,10	cyclictest	400100	-21	ssh	00:30:41	1
201703	99	46	40,4	cyclictest	299988	-21	gpgv	22:30:01	0
201703	99	46	38,5	cyclictest	312480	-21	latency_hist	22:45:00	0
201703	99	46	37,6	cyclictest	347560	-21	kworker/u4:3+rpciod	23:35:39	0
201703	99	46	37,6	cyclictest	223554	-21	kworker/u4:4+rpciod	21:00:15	0
201703	99	46	36,8	cyclictest	342486	-21	/usr/sbin/munin	23:20:37	0
201703	99	46	36,8	cyclictest	258216	-21	latency_hist	21:40:02	0
201707	99	45	37,5	cyclictest	208168	-21	ls	19:35:01	1
201707	99	45	33,9	cyclictest	0	-21	swapper/1	19:40:35	1
201707	99	45	32,10	cyclictest	0	-21	swapper/1	19:50:16	1
201707	99	45	23,18	cyclictest	205056	-21	ntpq	19:20:23	1
201703	99	45	38,5	cyclictest	275436	-21	aten_r7power_vo	22:00:18	0
201703	99	45	35,7	cyclictest	338576	-21	timerandwakeup	23:15:40	0
201703	99	45	35,7	cyclictest	226438	-21	aten_r7power_vo	20:45:16	0
201703	99	45	23,19	cyclictest	0	-21	swapper/0	22:20:29	0
201707	99	44	28,13	cyclictest	224342	-21	ntpq	20:35:28	1
201707	99	44	28,13	cyclictest	224342	-21	ntpq	20:35:27	1
201703	99	44	37,5	cyclictest	345806	-21	/usr/sbin/munin	23:25:19	0
201703	99	44	35,7	cyclictest	361782	-21	cron	23:45:00	0
201703	99	44	35,7	cyclictest	222510	-21	aten_r7power_cu	20:30:17	0
201703	99	44	35,6	cyclictest	396283	-21	/usr/sbin/munin	00:25:40	0
201703	99	44	35,6	cyclictest	232513	-21	unixbench_singl	21:05:39	0
201703	99	44	22,19	cyclictest	0	-21	swapper/0	19:55:21	0
201707	99	43	30,10	cyclictest	214003	-21	ntpq	19:55:26	1
201707	99	43	29,10	cyclictest	215375	-21	ntpq	20:00:33	1
201707	99	43	29,10	cyclictest	211457	-21	ntpq	19:45:26	1
201703	99	43	35,6	cyclictest	313946	-21	unixbench_multi	22:45:40	0
201703	99	43	35,5	cyclictest	283781	-21	aten_r7power_po	22:10:16	0
201703	99	43	35,5	cyclictest	216316	-21	fschecks_time	20:05:22	0
201703	99	43	32,9	cyclictest	374873	-21	fschecks_time	00:00:23	0
201703	99	43	32,8	cyclictest	225280	-21	uniq	20:40:17	0
201703	99	43	19,21	cyclictest	207384	-21	fschecks_time	19:30:17	0
201707	99	42	30,9	cyclictest	225039	-21	apt-get	20:40:11	1
201703	99	42	33,7	cyclictest	215588	-21	timerandwakeup	20:00:40	0
201703	99	42	32,7	cyclictest	212214	-21	aten_r7power_cu	19:50:14	0
201703	99	42	31,7	cyclictest	0	-21	swapper/0	20:25:37	0
201707	99	41	26,12	cyclictest	229599	-21	ntpq	20:55:34	1
201703	99	41	34,5	cyclictest	206115	-21	fschecks_time	19:25:18	0
201703	99	41	33,6	cyclictest	201640	-21	kworker/u4:5+rpciod	19:35:19	0
201703	99	41	33,5	cyclictest	219326	-21	grep	20:15:36	0
201703	99	40	33,4	cyclictest	206870	-21	kworker/u4:13-rpciod	20:10:19	0
201703	99	40	32,5	cyclictest	209946	-21	fschecks_time	19:40:20	0
201703	99	40	30,7	cyclictest	223819	-21	aten_r7power_en	20:35:16	0
201703	99	40	30,7	cyclictest	223819	-21	aten_r7power_en	20:35:16	0
201703	99	39	32,5	cyclictest	203503	-21	fschecks_time	19:15:22	0
201703	99	39	29,7	cyclictest	0	-21	swapper/0	19:50:01	0
201707	99	34	19,10	cyclictest	201672	-21	latency_hist	19:10:01	1
201703	99	32	3,25	cyclictest	201700	-21	cyclictest	19:10:01	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2019-05-28 - 00:17