OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of system in rack #0, 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.
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 rack0slot2.osadl.org (updated Wed Jul 15, 2026 12:43:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1551901	2	95	0,1	sleep7	1551902	-21	kthreadcore	11:15:17	7
1315928	2	94	0,1	sleep5	0	-21	swapper/5	09:40:18	5
1041096	2	94	0,1	sleep7	1041097	-21	cat	07:30:07	7
1425781	2	69	0,1	sleep7	1425784	-21	kthreadcore	10:25:16	7
997469	99	47	44,2	cyclictest	1383811	-21	kworker/u16:0+events_unbound	10:39:50	5
996940	2	47	37,7	sleep5	0	-21	swapper/5	07:06:18	5
997166	2	41	30,8	sleep4	0	-21	swapper/4	07:09:30	4
997037	2	41	7,29	sleep7	0	-21	swapper/7	07:07:40	7
987906	2	41	29,8	sleep6	0	-21	swapper/6	07:04:59	6
997473	99	40	37,2	cyclictest	1132417	-21	kworker/u16:0+events_unbound	08:20:08	6
997473	99	37	35,2	cyclictest	1408392	-21	kworker/u16:1+events_unbound	11:15:26	6
997473	99	37	35,2	cyclictest	1156117	-21	kworker/u16:5+events_unbound	09:42:07	6
997473	99	36	34,2	cyclictest	1408392	-21	kworker/u16:1+events_unbound	10:47:43	6
997473	99	35	33,2	cyclictest	1615723	-21	kworker/u16:0+events_unbound	12:06:42	6
997473	99	35	33,2	cyclictest	1469975	-21	kworker/u16:2+events_unbound	11:33:15	6
997473	99	35	33,2	cyclictest	1383811	-21	kworker/u16:0+events_unbound	10:32:20	6
997473	99	35	29,6	cyclictest	1346743	-21	kworker/u16:3+events_unbound	10:38:26	6
997469	99	35	33,2	cyclictest	1383811	-21	kworker/u16:0+flush-8:0	10:25:24	5
997473	99	34	32,2	cyclictest	1705167	-21	kworker/u16:3+events_unbound	12:20:58	6
997473	99	34	32,2	cyclictest	1503782	-21	kworker/u16:3+events_unbound	11:23:23	6
997473	99	34	32,2	cyclictest	1469975	-21	kworker/u16:2+events_unbound	11:05:22	6
997473	99	34	32,2	cyclictest	1383811	-21	kworker/u16:0+events_unbound	10:24:23	6
997473	99	34	32,2	cyclictest	1156117	-21	kworker/u16:5+events_unbound	09:57:47	6
997473	99	34	32,2	cyclictest	1006887	-21	kworker/u16:2+events_unbound	07:55:23	6
997473	99	33	31,2	cyclictest	1689894	-21	kworker/u16:4+events_unbound	12:11:15	6
997473	99	33	31,2	cyclictest	1542199	-21	kworker/u16:0+events_unbound	11:14:19	6
997473	99	33	31,2	cyclictest	1408392	-21	kworker/u16:1+events_unbound	11:25:24	6
997473	99	32	30,2	cyclictest	1665494	-21	kworker/u16:1+events_unbound	12:27:44	6
997473	99	32	30,2	cyclictest	1469975	-21	kworker/u16:2+events_unbound	10:51:39	6
997473	99	32	30,2	cyclictest	1383811	-21	kworker/u16:0+events_unbound	10:27:47	6
997473	99	32	30,2	cyclictest	1176977	-21	kworker/u16:0+flush-8:0	08:50:22	6
997473	99	32	30,2	cyclictest	1156117	-21	kworker/u16:5+flush-8:0	09:15:39	6
997469	99	32	29,3	cyclictest	1236752	-21	kworker/u16:1+flush-8:0	09:20:12	5
997469	99	32	29,2	cyclictest	1503782	-21	kworker/u16:3+flush-8:0	11:49:58	5
997473	99	31	29,2	cyclictest	1739339	-21	kworker/u16:2+events_unbound	12:36:28	6
997473	99	31	29,2	cyclictest	1503782	-21	kworker/u16:3+events_unbound	11:38:18	6
997473	99	31	29,2	cyclictest	1383811	-21	kworker/u16:0+events_unbound	10:40:03	6
997473	99	31	29,2	cyclictest	1383811	-21	kworker/u16:0+events_unbound	10:40:03	6
997473	99	31	29,2	cyclictest	1383810	-21	kworker/u16:6+events_unbound	10:15:16	6
997473	99	31	29,2	cyclictest	1257376	-21	kworker/u16:0+events_unbound	09:33:39	6
997473	99	31	29,2	cyclictest	1156117	-21	kworker/u16:5+events_unbound	09:54:31	6
997473	99	31	29,2	cyclictest	1107368	-21	kworker/u16:4+flush-8:0	09:05:15	6
997473	99	30	28,2	cyclictest	1615723	-21	kworker/u16:0+events_unbound	12:16:59	6
997473	99	30	28,2	cyclictest	1371248	-21	kworker/u16:4+flush-8:0	10:05:13	6
997469	99	30	28,2	cyclictest	1578636	-21	kworker/u16:0+flush-8:0	11:30:24	5
997475	99	29	24,4	cyclictest	648	-21	systemd-journal	07:18:45	7
997473	99	29	27,2	cyclictest	1342469	-21	kworker/u16:1+events_unbound	10:02:36	6
997473	99	29	27,2	cyclictest	1257376	-21	kworker/u16:0+events_unbound	09:26:07	6
997473	99	29	27,2	cyclictest	1236752	-21	kworker/u16:1+flush-8:0	09:35:25	6
997473	99	29	26,2	cyclictest	1006887	-21	kworker/u16:2+flush-8:0	08:25:09	6
997467	99	29	27,2	cyclictest	1689894	-21	kworker/u16:4+flush-8:0	12:15:55	4
997473	99	28	26,2	cyclictest	968138	-21	kworker/u16:0+events_unbound	07:10:04	6
997473	99	28	26,2	cyclictest	1615723	-21	kworker/u16:0+events_unbound	11:40:38	6
997473	99	28	26,2	cyclictest	1236752	-21	kworker/u16:1+events_unbound	09:23:07	6
997473	99	28	26,2	cyclictest	1156117	-21	kworker/u16:5+events_unbound	09:46:56	6
997467	99	28	26,2	cyclictest	1615723	-21	kworker/u16:0+events_unbound	12:24:48	4
1203280	2	28	0,1	chrt	0	-21	swapper/5	08:50:18	5
997475	99	27	22,3	cyclictest	1319134	-21	sh	09:40:42	7
997469	99	27	24,3	cyclictest	1469975	-21	kworker/u16:2+flush-8:0	10:44:59	5
1517400	2	27	0,1	chrt	1517401	-21	rm	11:01:30	7
997473	99	26	24,2	cyclictest	1665494	-21	kworker/u16:1+events_unbound	12:03:46	6
997473	99	26	24,2	cyclictest	1408392	-21	kworker/u16:1+flush-8:0	10:55:17	6
997469	99	26	24,2	cyclictest	1469975	-21	kworker/u16:2+events_unbound	11:06:03	5
997473	99	25	23,2	cyclictest	1615723	-21	kworker/u16:0+events_unbound	11:55:51	6
997473	99	25	23,2	cyclictest	1037291	-21	kworker/u16:0+events_unbound	07:30:18	6
1220536	2	25	0,1	chrt	1220537	-21	kthreadcore	09:00:13	7
997473	99	24	22,2	cyclictest	1503782	-21	kworker/u16:3+events_unbound	11:00:01	6
997473	99	24	22,2	cyclictest	1346743	-21	kworker/u16:3+events_unbound	10:11:43	6
997473	99	23	21,2	cyclictest	1705167	-21	kworker/u16:3+events_unbound	12:30:44	6
997473	99	23	21,2	cyclictest	1615723	-21	kworker/u16:0+events_unbound	11:52:06	6
997473	99	23	21,2	cyclictest	1615723	-21	kworker/u16:0+events_unbound	11:45:22	6
997473	99	23	21,2	cyclictest	1156117	-21	kworker/u16:5+flush-8:0	09:10:09	6
997473	99	23	21,2	cyclictest	1107368	-21	kworker/u16:4+flush-8:0	08:35:24	6
997473	99	23	21,2	cyclictest	1107368	-21	kworker/u16:4+flush-8:0	08:35:24	6
997473	99	23	21,2	cyclictest	1037291	-21	kworker/u16:0+events_unbound	07:47:20	6
997475	99	22	17,4	cyclictest	1457587	-21	dnf	10:39:47	7
997475	99	22	0,20	cyclictest	648	-21	systemd-journal	10:19:53	7
997473	99	22	20,2	cyclictest	1147722	-21	kworker/u16:1+events_unbound	08:42:40	6
997473	99	22	20,2	cyclictest	1147722	-21	kworker/u16:1+events_unbound	08:42:40	6
997473	99	22	20,2	cyclictest	1107368	-21	kworker/u16:4+events_unbound	08:45:28	6
997473	99	22	19,2	cyclictest	1050344	-21	kworker/u16:1+events_unbound	07:39:56	6
997469	99	22	20,2	cyclictest	1469975	-21	kworker/u16:2+events_unbound	11:44:47	5
997469	99	22	20,2	cyclictest	1176977	-21	kworker/u16:0+flush-8:0	08:45:24	5
997475	99	21	16,4	cyclictest	648	-21	systemd-journal	08:44:48	7
997475	99	21	16,4	cyclictest	648	-21	systemd-journal	08:44:48	7
997473	99	21	19,2	cyclictest	968489	-21	kworker/u16:1+flush-8:0	07:15:03	6
997473	99	21	19,2	cyclictest	1020618	-21	kworker/u16:3+events_unbound	07:24:51	6
997473	99	21	19,2	cyclictest	1006887	-21	kworker/u16:2+events_unbound	07:52:56	6
997473	99	21	18,3	cyclictest	1089265	-21	kworker/u16:3+flush-8:0	08:05:27	6
997467	99	21	19,2	cyclictest	1469975	-21	kworker/u16:2+events_unbound	11:42:08	4
997473	99	20	18,2	cyclictest	1089259	-21	kworker/u16:1+events_unbound	08:00:08	6
997473	99	20	18,2	cyclictest	1037291	-21	kworker/u16:0+flush-8:0	07:25:25	6
997467	99	20	3,1	cyclictest	20	1	rcu_preempt	12:14:52	4
997467	99	20	18,2	cyclictest	1383811	-21	kworker/u16:0+events_unbound	10:12:36	4
997467	99	20	18,2	cyclictest	1346743	-21	kworker/u16:3+events_unbound	10:21:04	4
997467	99	20	18,2	cyclictest	1236752	-21	kworker/u16:1+events_unbound	09:17:23	4
997467	99	20	18,2	cyclictest	1107368	-21	kworker/u16:4+events_unbound	09:12:07	4
997467	99	20	18,2	cyclictest	1089265	-21	kworker/u16:3+events_unbound	08:11:03	4
1276048	2	20	0,1	chrt	1276049	-21	kthreadcore	09:25:13	7
997473	99	19	17,2	cyclictest	1206175	-21	kworker/u16:2+flush-8:0	09:00:14	6
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2019-05-28 - 00:17