OSADL QA Farm on Real-time of Mainline Linux

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

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 100 highest latencies:

System rack7slot2.osadl.org (updated Fri Sep 04, 2026 12:44:13)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
3337662	99	122	111,7	cyclictest	53	-21	kswapd0	10:20:11	0
3337663	99	117	102,11	cyclictest	53	-21	kswapd0	10:25:12	1
3337663	99	86	69,8	cyclictest	3384715	-21	kworker/u4:9+events_unbound	09:35:04	1
3337663	99	82	74,6	cyclictest	3346658	-21	kworker/u4:2+events_unbound	08:19:48	1
3337662	99	81	73,5	cyclictest	3523341	-21	kworker/u4:1+events_unbound	12:20:43	0
3337662	99	73	33,36	cyclictest	0	-21	swapper/0	10:15:37	0
3337663	99	72	52,5	cyclictest	3338886	-21	kworker/u4:8+events_unbound	07:24:40	1
3337662	99	72	37,32	cyclictest	3401132	-21	ntp_kernel_pll_	09:45:25	0
3337662	99	70	33,33	cyclictest	0	-21	swapper/0	09:50:24	0
3337663	99	69	60,7	cyclictest	3477861	-21	kworker/u4:4+events_unbound	11:40:32	1
3337663	99	69	60,7	cyclictest	3477861	-21	kworker/u4:4+events_unbound	11:40:31	1
3337662	99	69	61,5	cyclictest	0	-21	swapper/0	11:50:32	0
3337662	99	68	39,26	cyclictest	3391551	-21	ssh	09:35:11	0
3337662	99	68	38,27	cyclictest	3547897	-21	/usr/sbin/munin	12:30:14	0
3337662	99	68	38,27	cyclictest	3409842	-21	gltestperf	09:55:19	0
3337662	99	68	35,30	cyclictest	3378173	-21	aten_r7power_vo	09:20:17	0
3337662	99	68	29,35	cyclictest	0	-21	swapper/0	11:10:32	0
3337663	99	67	49,6	cyclictest	3523342	-21	kworker/u4:3+events_unbound	12:10:40	1
3337662	99	67	36,29	cyclictest	3337659	-21	cyclictest	12:15:21	0
3337662	99	67	31,33	cyclictest	0	-21	swapper/0	09:25:23	0
3337662	99	67	29,33	cyclictest	0	-21	swapper/0	11:35:19	0
3337662	99	67	29,33	cyclictest	0	-21	swapper/0	11:35:19	0
3337662	99	66	3,30	cyclictest	3463583	-21	ntpq	10:55:36	0
3337662	99	66	1,12	cyclictest	3361317	-21	diskstats	08:40:22	0
3337662	99	65	33,29	cyclictest	3360799	-21	cron	08:40:00	0
3337662	99	65	29,34	cyclictest	3350274	-21	timerandwakeup	07:55:35	0
3337662	99	65	28,35	cyclictest	3423375	-21	kernelversion	10:10:27	0
3337662	99	65	28,35	cyclictest	3423375	-21	kernelversion	10:10:26	0
3337662	99	65	28,34	cyclictest	3472560	-21	ssh	11:05:35	0
3337662	99	65	28,33	cyclictest	3373238	-21	latency_hist	09:15:01	0
3337662	99	65	25,4	cyclictest	3521514	-21	ntpq	12:00:24	0
3337663	99	64	55,5	cyclictest	0	-21	swapper/1	09:45:35	1
3337663	99	64	53,9	cyclictest	3478527	-21	kworker/u4:6+events_unbound	11:20:27	1
3337662	99	64	27,34	cyclictest	0	-21	swapper/0	11:45:19	0
3337662	99	64	26,34	cyclictest	0	-21	swapper/0	10:40:31	0
3337662	99	64	25,36	cyclictest	3351086	-21	gltestperf	08:00:21	0
3337662	99	64	25,36	cyclictest	3351086	-21	gltestperf	08:00:20	0
3337662	99	64	19,42	cyclictest	3444659	-21	apt	10:34:59	0
3337663	99	63	55,6	cyclictest	3360780	-21	kworker/u4:2+events_unbound	08:59:56	1
3337662	99	63	54,7	cyclictest	3374454	-21	mailstats	09:15:36	0
3337662	99	63	30,30	cyclictest	3340321	-21	latency_hist	07:20:01	0
3337662	99	63	27,33	cyclictest	0	-21	swapper/0	07:30:00	0
3337662	99	63	26,34	cyclictest	3344543	-21	fschecks_count	07:35:18	0
3337663	99	62	52,7	cyclictest	3380104	-21	kworker/u4:5+events_unbound	09:40:04	1
3337662	99	62	4,14	cyclictest	3337659	-21	cyclictest	07:10:01	0
3337662	99	62	3,20	cyclictest	3353054	-21	modprobe	08:10:00	0
3337662	99	62	26,34	cyclictest	3459519	-21	sh	10:50:43	0
3337662	99	62	26,33	cyclictest	0	-21	swapper/0	08:45:37	0
3337662	99	62	26,33	cyclictest	0	-21	swapper/0	08:45:36	0
3337662	99	62	25,33	cyclictest	0	-21	swapper/0	09:40:27	0
3337662	99	62	23,8	cyclictest	0	-21	swapper/0	11:55:17	0
3337662	99	62	21,7	cyclictest	0	-21	swapper/0	11:15:46	0
3337663	99	61	52,7	cyclictest	3505126	-21	kworker/u4:0+events_unbound	11:45:32	1
3337662	99	61	33,25	cyclictest	3358151	-21	kworker/u4:4+rpciod	08:35:02	0
3337662	99	61	3,21	cyclictest	3552910	-21	ntpq	12:35:23	0
3337662	99	61	28,29	cyclictest	0	-21	swapper/0	12:10:33	0
3337662	99	61	27,31	cyclictest	0	-21	swapper/0	12:25:41	0
3337662	99	61	26,5	cyclictest	0	-21	swapper/0	11:20:45	0
3337662	99	61	26,32	cyclictest	0	-21	swapper/0	11:25:16	0
3337662	99	61	26,32	cyclictest	0	-21	swapper/0	11:25:16	0
3337662	99	61	26,31	cyclictest	0	-21	swapper/0	10:05:02	0
3337662	99	61	25,33	cyclictest	0	-21	swapper/0	11:42:35	0
3337662	99	61	25,33	cyclictest	0	-21	swapper/0	11:42:34	0
3337662	99	61	23,6	cyclictest	3343773	-21	mailstats	07:30:34	0
3337663	99	60	47,10	cyclictest	0	-21	swapper/1	09:30:20	1
3337663	99	60	47,10	cyclictest	0	-21	swapper/1	09:30:20	1
3337662	99	60	25,4	cyclictest	0	-21	swapper/0	10:35:23	0
3337662	99	60	21,7	cyclictest	0	-21	swapper/0	09:05:27	0
3337662	99	60	21,7	cyclictest	0	-21	swapper/0	09:05:26	0
3337663	99	59	50,5	cyclictest	0	-21	swapper/1	10:40:13	1
3337663	99	59	49,7	cyclictest	3358150	-21	kworker/u4:1+events_unbound	09:09:58	1
3337663	99	59	49,7	cyclictest	3358150	-21	kworker/u4:1+events_unbound	09:09:58	1
3337662	99	59	33,24	cyclictest	3494118	-21	aten_r7power_en	11:30:20	0
3337662	99	59	26,30	cyclictest	3454945	-21	diskmemload	10:45:37	0
3337662	99	59	24,5	cyclictest	3525615	-21	fschecks_count	12:05:19	0
3337663	99	58	48,7	cyclictest	3337659	-21	cyclictest	12:17:39	1
3337662	99	58	27,28	cyclictest	0	-21	swapper/0	10:05:30	0
3337662	99	58	24,4	cyclictest	0	-21	swapper/0	08:15:34	0
3337662	99	58	24,3	cyclictest	0	-21	swapper/0	08:20:25	0
3337662	99	58	23,6	cyclictest	0	-21	swapper/0	08:50:28	0
3337662	99	58	12,18	cyclictest	0	-21	swapper/0	07:55:01	0
3337663	99	57	47,7	cyclictest	37	-21	kcompactd0	12:27:45	1
3337663	99	57	47,7	cyclictest	3413518	-21	modprobe	10:00:00	1
3337663	99	56	49,5	cyclictest	3469477	-21	kworker/u4:10+events_unbound	11:10:24	1
3337662	99	56	33,20	cyclictest	3357405	-21	fschecks_time	08:25:18	0
3337662	99	56	20,6	cyclictest	0	-21	swapper/0	08:10:16	0
3337662	99	56	1,11	cyclictest	3390379	-21	ssh	09:33:44	0
3337662	99	56	1,11	cyclictest	3390379	-21	ssh	09:33:43	0
3337662	99	55	2,9	cyclictest	3467352	-21	wget	11:00:15	0
3337662	99	55	2,9	cyclictest	3467352	-21	wget	11:00:15	0
3337662	99	55	22,5	cyclictest	0	-21	swapper/0	10:25:28	0
3337663	99	54	43,8	cyclictest	3355837	-21	aten2__	08:20:15	1
3337663	99	54	40,11	cyclictest	3454746	-21	ntpq	10:45:33	1
3337662	99	54	18,6	cyclictest	0	-21	swapper/0	09:00:35	0
3337663	99	53	46,5	cyclictest	3349690	-21	fschecks_time	07:55:18	1
3337663	99	53	43,7	cyclictest	3478527	-21	kworker/u4:6+events_unbound	11:30:29	1
3337663	99	53	42,9	cyclictest	3466947	-21	sendmail	11:00:00	1
3337663	99	53	42,8	cyclictest	3424921	-21	kworker/u4:10+events_unbound	10:30:15	1
3337663	99	53	42,8	cyclictest	0	-21	swapper/1	11:15:41	1
3337663	99	52	42,7	cyclictest	3361071	-21	/usr/sbin/munin	08:40:11	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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