OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, slot #5

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 100 highest latencies:

System rack0slot5.osadl.org (updated Tue Feb 17, 2026 00:43:47)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1210883	99	533	2,530	cyclictest	0	-21	swapper/13	23:15:40	5
1210883	99	531	18,512	cyclictest	0	-21	swapper/13	21:40:40	5
1210857	99	526	12,513	cyclictest	0	-21	swapper/7	19:40:40	13
1210846	99	520	91,422	cyclictest	1170079	-21	kworker/4:3+i915-unordered	19:12:40	10
1210846	99	501	76,424	cyclictest	1263942	-21	kworker/4:1+i915-unordered	20:16:40	10
1210857	99	500	17,482	cyclictest	0	-21	swapper/7	23:43:40	13
1210846	99	493	491,1	cyclictest	1316040	-21	kworker/4:0+i915-unordered	21:20:40	10
1210846	99	492	68,423	cyclictest	1299867	-21	kworker/4:1+i915-unordered	21:16:40	10
1210846	99	491	490,1	cyclictest	1380366	-21	kworker/4:1+i915-unordered	22:53:40	10
1210835	99	490	489,1	cyclictest	1348185	-21	kworker/1:0+i915-unordered	22:03:40	1
1210846	99	489	487,2	cyclictest	1259852	-21	kworker/4:0+i915-unordered	20:10:40	10
1210846	99	485	396,30	cyclictest	0	-21	swapper/4	19:58:40	10
1210835	99	482	480,2	cyclictest	1384486	-21	kworker/1:1+i915-unordered	22:47:40	1
1210857	99	479	479,0	cyclictest	1287792	-21	kworker/7:4+i915-unordered	22:06:40	13
1210846	99	479	477,1	cyclictest	1170079	-21	kworker/4:3+i915-unordered	19:45:40	10
1210883	99	478	477,0	cyclictest	1227669	-21	kworker/13:0+i915-unordered	19:28:40	5
1210883	99	478	477,0	cyclictest	1227669	-21	kworker/13:0+i915-unordered	19:28:40	5
1210846	99	478	53,424	cyclictest	1259852	-21	kworker/4:0+i915-unordered	20:08:40	10
1210846	99	478	477,1	cyclictest	1311989	-21	kworker/4:2+i915-unordered	21:13:40	10
1210864	99	473	472,1	cyclictest	0	-21	swapper/9	21:56:40	15
1210854	99	472	15,59	cyclictest	0	-21	swapper/6	20:23:02	12
1210854	99	468	14,59	cyclictest	0	-21	swapper/6	20:38:04	12
1210846	99	467	11,455	cyclictest	0	-21	swapper/4	23:15:40	10
1210846	99	466	0,27	cyclictest	0	-21	swapper/4	21:40:40	10
1210835	99	464	463,1	cyclictest	0	-21	swapper/1	22:05:40	1
1210857	99	460	460,0	cyclictest	0	-21	swapper/7	00:37:40	13
1210854	99	460	11,30	cyclictest	0	-21	swapper/6	00:08:02	12
1210850	99	459	458,1	cyclictest	1408701	-21	kworker/5:0+i915-unordered	23:15:40	11
1210850	99	459	458,1	cyclictest	1332418	-21	kworker/5:2+i915-unordered	21:40:40	11
1210846	99	457	17,438	cyclictest	0	-21	swapper/4	21:56:40	10
1210869	99	453	28,28	cyclictest	0	-21	swapper/10	22:45:02	2
1210854	99	452	32,28	cyclictest	1210825	-21	cyclictest	19:37:40	12
1210854	99	452	32,28	cyclictest	1210825	-21	cyclictest	19:37:40	12
1210892	99	451	0,58	cyclictest	0	-21	swapper/15	20:36:40	7
1210857	99	450	449,1	cyclictest	0	-21	swapper/7	00:12:40	13
1210835	99	450	449,1	cyclictest	1396423	-21	kworker/1:2+i915-unordered	23:06:40	1
1210892	99	448	28,29	cyclictest	0	-21	swapper/15	21:50:40	7
1210869	99	448	0,30	cyclictest	0	-21	swapper/10	23:45:02	2
1210857	99	447	22,30	cyclictest	0	-21	swapper/7	00:27:40	13
1210879	99	446	445,1	cyclictest	697	50	irq/159-i915	19:53:40	4
1210854	99	446	17,30	cyclictest	0	-21	swapper/6	21:05:25	12
1210831	99	445	0,26	cyclictest	1312248	-21	perf	21:19:35	0
1210846	99	444	7,436	cyclictest	0	-21	swapper/4	00:36:40	10
1210869	99	441	14,28	cyclictest	0	-21	swapper/10	00:35:04	2
1210864	99	441	19,29	cyclictest	0	-21	swapper/9	23:42:40	15
1210854	99	441	21,29	cyclictest	0	-21	swapper/6	21:44:02	12
1210854	99	441	15,30	cyclictest	0	-21	swapper/6	21:52:04	12
1210854	99	441	13,29	cyclictest	0	-21	swapper/6	21:01:03	12
1210854	99	440	14,30	cyclictest	0	-21	swapper/6	21:22:26	12
1210879	99	438	437,1	cyclictest	697	50	irq/159-i915	22:05:40	4
1210864	99	437	436,1	cyclictest	1328228	-21	kworker/9:1+i915-unordered	22:05:40	15
1210892	99	435	12,30	cyclictest	0	-21	swapper/15	21:32:40	7
1210879	99	435	434,1	cyclictest	697	50	irq/159-i915	22:03:40	4
1210854	99	434	7,30	cyclictest	0	-21	swapper/6	22:49:23	12
1210850	99	434	16,29	cyclictest	0	-21	swapper/5	19:57:40	11
1210864	99	433	432,1	cyclictest	0	-21	swapper/9	22:03:40	15
1210835	99	433	432,1	cyclictest	1801	-21	snmpd	00:16:15	1
1210892	99	431	9,30	cyclictest	0	-21	swapper/15	00:33:40	7
1210879	99	428	425,2	cyclictest	1223488	-21	kworker/u64:3+events_unbound	19:39:04	4
1210879	99	428	425,2	cyclictest	1223488	-21	kworker/u64:3+events_unbound	19:39:04	4
1210869	99	428	8,417	cyclictest	0	-21	swapper/10	23:35:25	2
1210883	99	427	424,2	cyclictest	1278881	-21	kworker/u64:8+events_unbound	20:47:40	5
1210846	99	427	427,0	cyclictest	0	-21	swapper/4	23:43:40	10
1210883	99	426	425,1	cyclictest	0	-21	swapper/13	23:07:40	5
1210857	99	426	423,2	cyclictest	1383177	-21	kworker/u64:14+events_unbound	23:05:26	13
1210850	99	425	3,30	cyclictest	0	-21	swapper/5	23:55:40	11
1210879	99	424	423,1	cyclictest	697	50	irq/159-i915	00:12:40	4
1210846	99	424	422,2	cyclictest	0	-21	swapper/4	19:40:40	10
1210864	99	423	392,31	cyclictest	0	-21	swapper/9	22:47:40	15
1210846	99	423	423,0	cyclictest	0	-21	swapper/4	20:45:02	10
1210883	99	422	422,0	cyclictest	1444677	-21	kworker/13:1+i915-unordered	00:15:40	5
1210879	99	422	22,399	cyclictest	0	-21	swapper/12	23:00:02	4
1210846	99	422	419,2	cyclictest	1395248	-21	kworker/u64:7+events_unbound	23:06:40	10
1210835	99	422	0,1	cyclictest	0	-21	swapper/1	20:03:26	1
1210892	99	421	420,1	cyclictest	0	-21	swapper/15	21:48:53	7
1210883	99	421	419,1	cyclictest	0	-21	swapper/13	23:33:02	5
1210869	99	421	22,396	cyclictest	0	-21	swapper/10	21:06:25	2
1210835	99	421	24,396	cyclictest	0	-21	swapper/1	22:40:04	1
1210835	99	421	23,397	cyclictest	0	-21	swapper/1	00:05:03	1
1210850	99	420	0,30	cyclictest	0	-21	swapper/5	19:30:40	11
1210850	99	420	0,30	cyclictest	0	-21	swapper/5	19:30:40	11
1210892	99	419	26,392	cyclictest	0	-21	swapper/15	23:35:40	7
1210892	99	419	26,392	cyclictest	0	-21	swapper/15	22:40:40	7
1210887	99	419	417,1	cyclictest	1307894	-21	kworker/14:0+i915-unordered	21:25:05	6
1210887	99	419	1,417	cyclictest	0	-21	swapper/14	20:54:36	6
1210879	99	419	419,0	cyclictest	697	50	irq/159-i915	00:15:40	4
1210861	99	419	25,393	cyclictest	0	-21	swapper/8	00:13:23	14
1210850	99	419	0,30	cyclictest	0	-21	swapper/5	23:36:40	11
1210839	99	419	419,0	cyclictest	0	-21	swapper/2	20:30:40	8
1210879	99	418	418,0	cyclictest	697	50	irq/159-i915	00:37:40	4
1210879	99	418	21,396	cyclictest	0	-21	swapper/12	22:55:04	4
1210861	99	418	26,391	cyclictest	0	-21	swapper/8	20:05:25	14
1210861	99	418	24,393	cyclictest	0	-21	swapper/8	20:51:24	14
1210861	99	418	22,395	cyclictest	0	-21	swapper/8	22:16:26	14
1210831	99	418	23,394	cyclictest	1239849	-21	perf	19:49:36	0
1210892	99	417	24,392	cyclictest	0	-21	swapper/15	23:26:40	7
1210883	99	417	417,0	cyclictest	0	-21	swapper/13	19:37:03	5
1210883	99	417	417,0	cyclictest	0	-21	swapper/13	19:37:03	5
1210879	99	417	416,1	cyclictest	697	50	irq/159-i915	19:48:40	4
1210879	99	417	18,398	cyclictest	0	-21	swapper/12	23:05:02	4
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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