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Default latency plot of system in rack #a, slot #4

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, lowest P state: performance
Compare latency of primary with shadow system

Characteristics of the 50 highest latencies:

System rackaslot4.osadl.org (updated Sun Nov 16, 2025 12:43:26)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
1299820	99	6770	0,6767	cyclictest	93	-21	kcompactd0		7
1299817	99	6384	1,6380	cyclictest	1386059	-21	sshd		5
1299818	99	1182	1,1177	cyclictest	1363684	-21	sshd		6
1299820	99	577	0,574	cyclictest	1622	-21	snmpd		7
1299817	99	575	1,571	cyclictest	1622	-21	snmpd		5
1299820	99	560	3,554	cyclictest	1622	-21	snmpd		7
1299817	99	557	2,551	cyclictest	1622	-21	snmpd		5
1299820	99	530	1,526	cyclictest	1622	-21	snmpd		7
1299818	99	529	2,524	cyclictest	1622	-21	snmpd		6
1299818	99	529	2,524	cyclictest	1622	-21	snmpd		6
1299820	99	505	1,502	cyclictest	78	-21	ksoftirqd/7		7
1299817	99	505	2,501	cyclictest	1622	-21	snmpd		5
1299820	99	466	1,462	cyclictest	1622	-21	snmpd		7
1299817	99	314	0,312	cyclictest	1622	-21	snmpd		5
1299820	99	273	2,268	cyclictest	1622	-21	snmpd		7
1299820	99	251	1,248	cyclictest	1622	-21	snmpd		7
1299820	99	237	1,234	cyclictest	1301784	-21	/usr/sbin/munin		7
1299817	99	220	1,217	cyclictest	1622	-21	snmpd		5
1299814	99	200	3,195	cyclictest	1622	-21	snmpd		4
1299817	99	178	2,174	cyclictest	1622	-21	snmpd		5
1299817	99	153	1,150	cyclictest	1622	-21	snmpd		5
1299814	99	150	0,148	cyclictest	567	-21	avahi-daemon		4
1299820	99	149	1,146	cyclictest	1622	-21	snmpd		7
1299811	99	116	4,107	cyclictest	870	-21	NetworkManager		3
1299820	99	107	0,105	cyclictest	1138	-21	sendmail-mta		7
1299820	99	104	1,101	cyclictest	567	-21	avahi-daemon		7
1299820	99	104	1,101	cyclictest	567	-21	avahi-daemon		7
1299820	99	85	2,81	cyclictest	1161	-21	munin-node		7
1299811	99	71	3,63	cyclictest	1161	-21	munin-node		3
1299817	99	50	2,47	cyclictest	1161	-21	munin-node		5
1299803	99	48	37,8	cyclictest	1341220	-21	kworker/u32:0+flush-179:96		1
1299803	99	47	38,5	cyclictest	3585105	-1	kworker/1:2H+kblockd		1
1299803	99	46	35,8	cyclictest	310	-21	jbd2/mmcblk1p3-8		1
1299803	99	45	38,5	cyclictest	1328501	-21	kworker/u32:0+flush-179:96		1
1299797	99	45	37,5	cyclictest	374	-21	systemd-journal		0
1299811	99	44	3,38	cyclictest	1138	-21	sendmail-mta		3
1299810	99	44	35,6	cyclictest	1379166	-21	kworker/u32:3+flush-179:96		2
1299803	99	44	36,5	cyclictest	374	-21	systemd-journal		1
1299803	99	44	35,6	cyclictest	3585105	-1	kworker/1:2H+kblockd		1
1299803	99	43	2,9	cyclictest	1364519	-21	grep		1
1299803	99	42	34,5	cyclictest	3585105	-1	kworker/1:2H+kblockd		1
1299803	99	42	32,8	cyclictest	1384338	-21	kworker/u32:0+flush-179:96		1
1299817	99	41	3,36	cyclictest	1161	-21	munin-node		5
1299811	99	41	34,5	cyclictest	1918817	-21	kworker/3:1+pm		3
1299811	99	41	34,5	cyclictest	1918817	-21	kworker/3:1+pm		3
1299811	99	41	34,5	cyclictest	1918817	-21	kworker/3:1+pm		3
1299820	99	40	3,36	cyclictest	1079	-21	ntpd		7
1299814	99	40	37,2	cyclictest	310	-21	jbd2/mmcblk1p3-8		4
1299803	99	40	30,8	cyclictest	310	-21	jbd2/mmcblk1p3-8		1
1299797	99	40	32,5	cyclictest	1387966	-1	kworker/0:0H+kblockd		0
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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