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 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 Wed Jan 14, 2026 00:44:06)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1340795	99	41	37,3	cyclictest	1325117	-21	kworker/u8:0+events_unbound	19:10:10	3
1340791	99	38	31,5	cyclictest	1611354	-21	kworker/u8:1+flush-259:0	23:35:15	2
1340795	99	37	34,2	cyclictest	1454818	-21	kworker/u8:1+events_unbound	22:20:16	3
1340795	99	37	34,2	cyclictest	1454818	-21	kworker/u8:1+events_unbound	22:20:16	3
1340791	99	37	30,5	cyclictest	1480497	-21	latency_hist	21:25:01	2
1340789	99	37	34,2	cyclictest	1611354	-21	kworker/u8:1+flush-259:0	23:54:28	1
1340789	99	37	30,5	cyclictest	1474487	-21	ntpq	21:15:20	1
1340785	99	37	29,6	cyclictest	1526424	-21	ntpq	22:05:21	0
1340789	99	36	33,2	cyclictest	1413237	-21	kworker/u8:0+flush-259:0	20:25:29	1
1340789	99	36	32,3	cyclictest	1397736	-21	latency_hist	20:05:01	1
1340789	99	36	32,3	cyclictest	1361372	-21	kworker/u8:2+events_unbound	19:40:22	1
1340789	99	36	32,3	cyclictest	1325117	-21	kworker/u8:0+events_unbound	19:15:00	1
1340789	99	35	32,2	cyclictest	1490659	-21	kworker/u8:0+events_unbound	21:40:13	1
1340789	99	33	30,2	cyclictest	1611354	-21	kworker/u8:1+flush-259:0	23:40:24	1
1340785	99	33	26,5	cyclictest	1490756	-21	latency_hist	21:35:00	0
1340789	99	32	28,3	cyclictest	1325117	-21	kworker/u8:0+events_unbound	19:25:15	1
1340789	99	32	27,3	cyclictest	1485628	-21	latency_hist	21:30:01	1
1340791	99	31	24,5	cyclictest	1434228	-21	latency_hist	20:40:01	2
1340789	99	30	28,2	cyclictest	1559195	-21	kworker/u8:2+flush-259:0	23:10:13	1
1340795	99	29	26,2	cyclictest	1454818	-21	kworker/u8:1+flush-259:0	22:10:01	3
1340795	99	29	25,3	cyclictest	1454818	-21	kworker/u8:1+flush-259:0	21:55:00	3
1340795	99	29	22,3	cyclictest	1559195	-21	kworker/u8:2+flush-259:0	23:15:00	3
1340789	99	29	24,4	cyclictest	3057496	-21	kworker/u8:1+flush-259:0	19:15:17	1
1340795	99	28	24,3	cyclictest	1559195	-21	kworker/u8:2+events_unbound	00:00:20	3
1340791	99	28	22,4	cyclictest	1664100	-21	/usr/sbin/munin	00:20:13	2
1340789	99	28	25,2	cyclictest	1611354	-21	kworker/u8:1+flush-259:0	00:15:20	1
1340795	99	27	24,2	cyclictest	1372048	-21	kworker/u8:3+events_unbound	20:45:14	3
1340791	99	27	23,3	cyclictest	1611354	-21	kworker/u8:1+flush-259:0	23:40:15	2
1340789	99	27	24,2	cyclictest	1611354	-21	kworker/u8:1+events_unbound	23:45:20	1
1340789	99	27	24,2	cyclictest	1470239	-21	kworker/u8:3+flush-259:0	21:30:21	1
1340789	99	27	22,4	cyclictest	1653541	-21	latency_hist	00:10:00	1
1340789	99	27	21,4	cyclictest	1558328	-21	ntpq	22:35:21	1
1340785	99	27	24,2	cyclictest	1361372	-21	kworker/u8:2+flush-259:0	19:40:19	0
1340795	99	26	23,2	cyclictest	1600968	-21	kworker/u8:3+events_unbound	23:20:17	3
1340795	99	26	23,2	cyclictest	1470239	-21	kworker/u8:3+flush-259:0	21:25:22	3
1340789	99	26	23,2	cyclictest	1490659	-21	kworker/u8:0+flush-259:0	22:55:24	1
1340789	99	26	23,2	cyclictest	1454818	-21	kworker/u8:1+flush-259:0	21:35:14	1
1340789	99	26	23,2	cyclictest	1372048	-21	kworker/u8:3+flush-259:0	20:45:24	1
1340785	99	26	22,3	cyclictest	1559195	-21	kworker/u8:2+flush-259:0	23:15:13	0
1340785	99	26	20,4	cyclictest	1412707	-21	ntpq	20:15:22	0
1340795	99	25	23,1	cyclictest	1611354	-21	kworker/u8:1+events_unbound	23:55:13	3
1340795	99	25	22,2	cyclictest	1559195	-21	kworker/u8:2+events_unbound	23:05:16	3
1340791	99	25	21,3	cyclictest	1600968	-21	kworker/u8:3+flush-259:0	23:35:01	2
1340791	99	25	20,3	cyclictest	1511342	-21	apt-get	21:55:03	2
1340791	99	25	19,4	cyclictest	1382331	-21	latency_hist	19:50:00	2
1340789	99	25	22,2	cyclictest	3057496	-21	kworker/u8:1+events_unbound	19:35:18	1
1340789	99	25	22,2	cyclictest	1490659	-21	kworker/u8:0+flush-259:0	23:05:20	1
1340789	99	25	22,2	cyclictest	1372048	-21	kworker/u8:3+flush-259:0	20:20:17	1
1340789	99	25	20,4	cyclictest	1340706	-21	latency_hist	19:10:01	1
1340789	99	25	19,4	cyclictest	1516941	-21	awk	22:00:00	1
1340791	99	24	18,4	cyclictest	1684503	-21	latency_hist	00:40:01	2
1340789	99	24	22,2	cyclictest	1611354	-21	kworker/u8:1+events_unbound	00:30:13	1
1340789	99	24	21,2	cyclictest	1611354	-21	kworker/u8:1+flush-259:0	00:10:21	1
1340789	99	24	21,2	cyclictest	1372048	-21	kworker/u8:3+flush-259:0	21:05:24	1
1340789	99	24	18,5	cyclictest	1648021	-21	latency_hist	00:05:00	1
1340785	99	24	20,3	cyclictest	3057496	-21	kworker/u8:1+events_unbound	19:35:20	0
1340785	99	24	17,5	cyclictest	1500196	-21	ntpq	21:40:20	0
1340785	99	24	17,5	cyclictest	1459024	-21	ntpq	21:00:22	0
1340795	99	23	20,2	cyclictest	1674420	-21	kworker/u8:0+events_unbound	00:30:25	3
1340795	99	23	20,2	cyclictest	1490659	-21	kworker/u8:0+events_unbound	22:35:19	3
1340795	99	23	18,4	cyclictest	1325117	-21	kworker/u8:0+events_unbound	19:30:17	3
1340795	99	23	17,4	cyclictest	252	-21	systemd-journal	00:13:48	3
1340791	99	23	19,3	cyclictest	1490659	-21	kworker/u8:0+flush-259:0	23:00:00	2
1340791	99	23	19,3	cyclictest	1397743	-21	apt-get	20:05:00	2
1340789	99	23	21,2	cyclictest	1429036	-21	kworker/u8:1+flush-259:0	20:35:24	1
1340789	99	23	20,2	cyclictest	1611354	-21	kworker/u8:1+events_unbound	00:35:25	1
1340789	99	23	20,2	cyclictest	1516924	-21	kworker/u8:2+flush-259:0	22:00:14	1
1340789	99	23	20,2	cyclictest	1470239	-21	kworker/u8:3+flush-259:0	21:20:18	1
1340789	99	23	20,2	cyclictest	1465024	-21	kworker/u8:2+flush-259:0	21:10:16	1
1340789	99	23	19,3	cyclictest	3057496	-21	kworker/u8:1+flush-259:0	19:30:41	1
1340785	99	23	19,3	cyclictest	1403345	-21	latency_hist	20:10:01	0
1340785	99	23	18,3	cyclictest	1511995	-21	rred	21:55:01	0
1340785	99	23	17,4	cyclictest	252	-21	systemd-journal	20:35:00	0
1340795	99	22	19,2	cyclictest	1454818	-21	kworker/u8:1+events_unbound	21:35:13	3
1340795	99	22	18,3	cyclictest	1413237	-21	kworker/u8:0+flush-259:0	20:40:23	3
1340791	99	22	17,3	cyclictest	252	-21	systemd-journal	23:23:47	2
1340789	99	22	19,2	cyclictest	1490659	-21	kworker/u8:0+events_unbound	22:15:18	1
1340789	99	22	19,2	cyclictest	1454818	-21	kworker/u8:1+flush-259:0	22:05:16	1
1340789	99	22	15,5	cyclictest	1506596	-21	diskstats	21:50:13	1
1340785	99	22	19,2	cyclictest	1611354	-21	kworker/u8:1+flush-259:0	00:10:16	0
1340785	99	22	18,3	cyclictest	1611354	-21	kworker/u8:1+events_unbound	23:55:18	0
1340785	99	22	18,3	cyclictest	1372048	-21	kworker/u8:3+events_unbound	19:45:20	0
1340795	99	21	17,3	cyclictest	1611354	-21	kworker/u8:1+flush-259:0	23:45:27	3
1340795	99	21	17,3	cyclictest	1454818	-21	kworker/u8:1+events_unbound	22:03:22	3
1340795	99	21	16,4	cyclictest	1611843	-21	base64	23:30:02	3
1340791	99	21	14,5	cyclictest	1678504	-21	ntpq	00:30:21	2
1340789	99	21	18,2	cyclictest	1361372	-21	kworker/u8:2+events_unbound	20:05:18	1
1340785	99	21	17,3	cyclictest	1397778	-21	kworker/u8:1+events_unbound	20:10:18	0
1340785	99	21	15,4	cyclictest	509	-21	rs:main		0
1340795	99	20	17,2	cyclictest	1548449	-21	kworker/u8:3+flush-259:0	22:35:00	3
1340795	99	20	16,3	cyclictest	1449921	-21	apt-get	20:55:11	3
1340791	99	20	14,4	cyclictest	1465024	-21	kworker/u8:2+flush-259:0	21:45:18	2
1340791	99	20	14,4	cyclictest	1350222	-21	ntpq	19:15:21	2
1340789	99	20	13,5	cyclictest	1532517	-21	apt-get	22:15:01	1
1340789	99	20	13,5	cyclictest	1532517	-21	apt-get	22:15:00	1
1340785	99	20	16,3	cyclictest	1611354	-21	kworker/u8:1+flush-259:0	23:45:16	0
1340785	99	20	16,3	cyclictest	1490659	-21	kworker/u8:0+flush-259:0	22:25:24	0
1340785	99	20	16,3	cyclictest	1351312	-21	apt-get	19:20:10	0
1340785	99	20	16,3	cyclictest	1325117	-21	kworker/u8:0+events_unbound	19:10:16	0
1340795	99	19	16,2	cyclictest	1579828	-21	kworker/u8:3+flush-259:0	23:00:13	3
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


Access: public		Short link to this page
This page was last modified on 2021-09-01 - 00:34