OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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
Special All - All RT - Optimization - Ethernet - Thumbnails - Next

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 rackeslot4s.osadl.org (updated Thu Jun 11, 2026 12:44:05)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1246649	99	52	49,2	cyclictest	1397902	-21	kworker/u8:0+flush-259:0	09:45:01	1
1246649	99	47	44,2	cyclictest	1360430	-21	kworker/u8:4+flush-259:0	09:15:21	1
1246649	99	44	40,3	cyclictest	1428838	-21	kworker/u8:1+flush-259:0	10:15:22	1
1246644	99	43	36,5	cyclictest	1453633	-21	ntpq	10:25:20	0
1246652	99	42	39,2	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	11:25:15	2
1246649	99	42	38,3	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	10:25:25	1
1246649	99	42	35,5	cyclictest	1500095	-21	ntpq	11:10:20	1
1246649	99	42	35,5	cyclictest	1500095	-21	ntpq	11:10:20	1
1246649	99	40	35,3	cyclictest	335557	-21	systemd-journal	07:20:18	1
1246649	99	40	34,4	cyclictest	335557	-21	systemd-journal	09:23:20	1
1246655	99	39	34,3	cyclictest	335557	-21	systemd-journal	08:32:21	3
1246649	99	39	36,2	cyclictest	1553964	-21	kworker/u8:3+flush-259:0	12:15:21	1
1246644	99	39	33,4	cyclictest	1553964	-21	kworker/u8:3+flush-259:0	12:35:17	0
1246652	99	38	32,4	cyclictest	1338705	-21	ntpq	08:35:22	2
1246649	99	38	35,2	cyclictest	1532159	-21	kworker/u8:2+flush-259:0	12:05:21	1
1246652	99	37	33,3	cyclictest	1324096	-21	kworker/u8:1+flush-259:0	08:30:21	2
1246649	99	37	34,2	cyclictest	1324096	-21	kworker/u8:1+flush-259:0	08:25:17	1
1246649	99	37	34,2	cyclictest	1282796	-21	kworker/u8:0+flush-259:0	08:25:00	1
1246649	99	36	33,2	cyclictest	1532159	-21	kworker/u8:2+flush-259:0	12:00:21	1
1246644	99	36	31,3	cyclictest	1192940	-21	kworker/u8:1+flush-259:0	07:50:18	0
1246644	99	36	29,5	cyclictest	1427924	-21	ntpq	10:00:22	0
1246652	99	35	32,2	cyclictest	1387119	-21	kworker/u8:3+flush-259:0	09:45:15	2
1246649	99	35	30,4	cyclictest	1282756	-21	latency_hist	07:45:00	1
1246644	99	35	28,5	cyclictest	1567595	-21	ntpq	12:15:19	0
1246652	99	34	30,3	cyclictest	1397902	-21	kworker/u8:0+flush-259:0	09:50:17	2
1246652	99	34	29,4	cyclictest	1360430	-21	kworker/u8:4+events_unbound	09:10:21	2
1246644	99	34	29,3	cyclictest	1490922	-21	/usr/sbin/munin	11:05:16	0
1246655	99	33	27,4	cyclictest	335557	-21	systemd-journal	08:55:00	3
1246652	99	33	29,2	cyclictest	1365434	-21	gpgv	09:05:00	2
1246649	99	33	27,4	cyclictest	335557	-21	systemd-journal	08:45:20	1
1246644	99	33	29,3	cyclictest	1532159	-21	kworker/u8:2+events_unbound	12:10:17	0
1246655	99	32	27,3	cyclictest	335557	-21	systemd-journal	11:31:20	3
1246652	99	32	29,2	cyclictest	1412927	-21	kworker/u8:4+events_unbound	09:55:20	2
1246652	99	32	29,2	cyclictest	1192940	-21	kworker/u8:1+flush-259:0	07:14:51	2
1246652	99	32	28,3	cyclictest	1434684	-21	kworker/u8:0+events_unbound	11:21:22	2
1246652	99	32	28,3	cyclictest	1192940	-21	kworker/u8:1+flush-259:0	07:30:01	2
1246649	99	32	28,3	cyclictest	1392287	-21	/usr/sbin/munin	09:30:12	1
1246644	99	32	28,3	cyclictest	1532159	-21	kworker/u8:2+flush-259:0	12:05:24	0
1246644	99	32	26,4	cyclictest	1475530	-21	apt-get	10:50:12	0
1246655	99	31	28,2	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	10:20:21	3
1246655	99	31	26,3	cyclictest	1553964	-21	kworker/u8:3+events_unbound	12:35:20	3
1246655	99	31	26,3	cyclictest	1282796	-21	kworker/u8:0+flush-259:0	08:15:20	3
1246655	99	31	24,4	cyclictest	335557	-21	systemd-journal	09:05:00	3
1246649	99	31	27,3	cyclictest	1459760	-21	kworker/u8:4+flush-259:0	10:55:00	1
1246649	99	31	27,3	cyclictest	1360468	-21	apt-get	09:00:12	1
1246655	99	30	25,4	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	10:45:20	3
1246655	99	30	25,4	cyclictest	1192940	-21	kworker/u8:1+flush-259:0	07:45:25	3
1246655	99	30	24,4	cyclictest	335557	-21	systemd-journal	11:20:00	3
1246655	99	30	24,4	cyclictest	1516675	-21	kworker/u8:4+flush-259:0	11:40:01	3
1246652	99	30	27,2	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	10:30:20	2
1246652	99	30	26,3	cyclictest	1434684	-21	kworker/u8:0+events_unbound	10:20:26	2
1246649	99	30	27,3	cyclictest	1516675	-21	kworker/u8:4+flush-259:0	11:35:43	1
1246649	99	30	27,2	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	11:30:21	1
1246649	99	30	27,2	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	10:20:22	1
1246649	99	30	27,2	cyclictest	1387119	-21	kworker/u8:3+flush-259:0	10:00:20	1
1246649	99	30	27,2	cyclictest	1360430	-21	kworker/u8:4+events_unbound	09:25:22	1
1246649	99	30	27,2	cyclictest	1293291	-21	kworker/u8:3+flush-259:0	08:10:21	1
1246649	99	30	27,2	cyclictest	1282796	-21	kworker/u8:0+flush-259:0	08:40:21	1
1246652	99	29	26,2	cyclictest	1516675	-21	kworker/u8:4+flush-259:0	11:35:23	2
1246652	99	29	26,2	cyclictest	1428838	-21	kworker/u8:1+flush-259:0	10:10:21	2
1246652	99	29	25,3	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	11:00:26	2
1246652	99	29	25,3	cyclictest	1192940	-21	kworker/u8:1+events_unbound	07:30:21	2
1246649	99	29	26,2	cyclictest	1324096	-21	kworker/u8:1+events_unbound	08:50:22	1
1246649	99	29	24,4	cyclictest	335557	-21	systemd-journal	11:05:34	1
1246655	99	28	23,4	cyclictest	1542278	-21	gpgv	11:55:01	3
1246652	99	28	25,2	cyclictest	1212525	-21	kworker/u8:0+flush-259:0	07:19:51	2
1246652	99	28	25,2	cyclictest	1192940	-21	kworker/u8:1+flush-259:0	08:05:23	2
1246652	99	28	24,3	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	10:25:27	2
1246652	99	28	24,3	cyclictest	1434684	-21	kworker/u8:0+events_unbound	11:45:00	2
1246652	99	28	24,3	cyclictest	1282796	-21	kworker/u8:0+flush-259:0	08:55:21	2
1246649	99	28	25,2	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	10:55:20	1
1246649	99	28	25,2	cyclictest	1387119	-21	kworker/u8:3+flush-259:0	09:55:21	1
1246649	99	28	25,2	cyclictest	1192940	-21	kworker/u8:1+flush-259:0	08:05:21	1
1246649	99	28	24,3	cyclictest	1469233	-21	ntpq	10:40:22	1
1246649	99	28	23,4	cyclictest	1303379	-21	latency_hist	08:05:00	1
1246644	99	28	24,3	cyclictest	1532159	-21	kworker/u8:2+flush-259:0	11:55:23	0
1246644	99	28	24,3	cyclictest	1359320	-21	kworker/u8:2+flush-259:0	09:35:00	0
1246655	99	27	20,5	cyclictest	1547885	-21	latency_hist	12:00:01	3
1246652	99	27	21,4	cyclictest	1283019	-21	apt-get	07:45:10	2
1246649	99	27	24,2	cyclictest	1496506	-21	kworker/u8:3+events_unbound	11:40:20	1
1246649	99	27	24,2	cyclictest	1480636	-21	kworker/u8:1+events_unbound	11:00:23	1
1246649	99	27	24,2	cyclictest	1282796	-21	kworker/u8:0+flush-259:0	08:15:22	1
1246649	99	27	24,2	cyclictest	1212525	-21	kworker/u8:0+flush-259:0	07:15:22	1
1246649	99	27	23,3	cyclictest	335557	-21	systemd-journal	11:23:20	1
1246649	99	27	23,3	cyclictest	1460002	-21	apt-get	10:35:12	1
1246649	99	27	23,3	cyclictest	1434684	-21	kworker/u8:0+events_unbound	11:45:40	1
1246652	99	26	23,2	cyclictest	1459760	-21	kworker/u8:4+events_unbound	10:50:22	2
1246652	99	26	22,3	cyclictest	1360430	-21	kworker/u8:4+flush-259:0	09:15:25	2
1246649	99	26	23,2	cyclictest	1553964	-21	kworker/u8:3+flush-259:0	12:30:18	1
1246649	99	26	23,2	cyclictest	1428838	-21	kworker/u8:1+flush-259:0	10:05:21	1
1246644	99	26	21,4	cyclictest	335557	-21	systemd-journal	09:01:20	0
1246644	99	26	21,3	cyclictest	1192940	-21	kworker/u8:1+flush-259:0	07:25:01	0
1246652	99	25	22,2	cyclictest	1532159	-21	kworker/u8:2+flush-259:0	12:00:20	2
1246652	99	25	20,4	cyclictest	1434684	-21	kworker/u8:0+flush-259:0	11:50:16	2
1246652	99	25	18,5	cyclictest	1520699	-21	ntpq	11:30:20	2
1246649	99	25	22,2	cyclictest	1532159	-21	kworker/u8:2+events_unbound	12:13:21	1
1246649	99	25	22,2	cyclictest	1434684	-21	kworker/u8:0+events_unbound	11:55:19	1
1246644	99	25	21,3	cyclictest	1324096	-21	kworker/u8:1+flush-259:0	08:45:23	0
1246644	99	25	20,4	cyclictest	1266431	-21	ntpq	07:25:19	0
1246644	99	25	20,3	cyclictest	1454790	-21	/usr/sbin/munin	10:30:18	0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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This page was last modified on 2021-09-01 - 00:34