OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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
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x86 Intel Pentium N4200 @1100 MHz, Linux 5.9.1-rt18 (Profile)

Latency plot of shadow in rack #c, slot #4

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rackcslot4s.osadl.org (updated Tue Jan 31, 2023 00:44:29)
Delayed (victim)					Switcher (culprit)			Timestamp	CPU
PID	Prio	Total latency (µs)	T^(,W^*) latency (µs)	Cmd	PID	Prio	Cmd	Timestamp	CPU
6272	99	44	1,25	cyclictest	3858	-21	awk	23:50:00	2
6272	99	44	1,25	cyclictest	3858	-21	awk	23:50:00	2
6272	99	43	2,24	cyclictest	11693	-21	lsb_release	21:00:01	2
6272	99	43	1,29	cyclictest	19438	-21	lsb_release	00:34:59	2
6272	99	43	10,19	cyclictest	3098	-21	cron	20:35:00	2
6272	99	38	1,21	cyclictest	14861	-21	timerandwakeup	19:30:29	2
6272	99	36	0,19	cyclictest	29326	-21	ntp_states	21:50:22	2
6272	99	36	0,19	cyclictest	20114	-21	cat	00:35:23	2
6272	99	35	0,24	cyclictest	22392	-21	ntp_states	21:30:24	2
6272	99	35	0,24	cyclictest	17997	-21	snmp_o5powerctl	19:40:29	2
6272	99	35	0,18	cyclictest	8331	-21	cut	22:25:00	2
6272	99	34	1,19	cyclictest	5868	-21	sed	22:15:35	2
6272	99	34	1,19	cyclictest	4485	-21	sshd	22:13:28	2
6272	99	34	1,16	cyclictest	0	-21	swapper/2	22:45:24	2
6272	99	34	0,23	cyclictest	8032	-21	mailstats	20:45:27	2
6272	99	34	0,23	cyclictest	0	-21	swapper/2	00:15:28	2
6272	99	34	0,20	cyclictest	548	-21	munin-run	23:40:00	2
6272	99	34	0,19	cyclictest	26694	-21	sshd	21:42:44	2
6272	99	34	0,18	cyclictest	23025	-21	cat	23:05:33	2
6272	99	34	0,17	cyclictest	3339	-21	apt-get	20:35:16	2
6272	99	33	1,21	cyclictest	0	-21	swapper/2	21:55:28	2
6272	99	33	1,17	cyclictest	23978	-21	ntp_kernel_pll_	21:35:24	2
6272	99	33	1,15	cyclictest	0	-21	swapper/2	19:25:10	2
6272	99	33	0,29	cyclictest	1052	-21	python3	20:30:00	2
6272	99	33	0,23	cyclictest	0	-21	swapper/2	19:45:24	2
6272	99	33	0,20	cyclictest	26176	-21	timerandwakeup	20:05:30	2
6272	99	33	0,20	cyclictest	22410	-21	latency	19:55:21	2
6272	99	32	1,29	cyclictest	18404	-21	latency_hist	22:55:00	2
6272	99	32	0,17	cyclictest	27847	-21	cat	20:10:33	2
6272	99	31	3,25	cyclictest	28127	-21	sort	21:45:30	2
6272	99	31	1,27	cyclictest	8089	-21	tune2fs	00:00:23	2
6272	99	31	1,27	cyclictest	7129	-21	systemctl	00:00:00	2
6272	99	31	1,26	cyclictest	31373	-21	turbostat	23:35:00	2
6272	99	31	0,28	cyclictest	6046	-21	python3	19:10:01	2
6272	99	31	0,18	cyclictest	16387	-21	switchtime	19:35:29	2
6272	99	31	0,15	cyclictest	0	-21	swapper/2	22:40:36	2
6272	99	30	1,25	cyclictest	15680	-21	dpkg	00:24:59	2
6272	99	30	0,2	cyclictest	23700	-1	kworker/2:2H	22:30:00	2
6272	99	30	0,27	cyclictest	5522	-21	grep	20:40:22	2
6272	99	30	0,1	cyclictest	0	-21	swapper/2	00:10:01	2
6272	99	29	3,20	cyclictest	11498	-21	python3	22:35:00	2
6272	99	29	2,22	cyclictest	19801	-21	lsb_release	21:25:00	2
6272	99	29	1,25	cyclictest	29986	-21	apt-config	20:20:01	2
6272	99	29	1,25	cyclictest	17415	-21	apt-config	00:26:45	2
6272	99	29	0,6	cyclictest	30170	-21	dpkg	20:20:02	2
6272	99	29	0,1	cyclictest	0	-21	swapper/2	23:10:22	2
6272	99	29	0,1	cyclictest	0	-21	swapper/2	23:10:21	2
6264	99	29	16,2	cyclictest	11	1	rcu_preempt	19:40:01	0
6272	99	28	2,19	cyclictest	20015	-21	apt-get	21:25:18	2
6272	99	28	1,23	cyclictest	24909	-21	sort	20:05:00	2
6272	99	28	1,23	cyclictest	18229	-21	latency_hist	21:20:00	2
6272	99	28	0,25	cyclictest	26522	-21	dpkg	23:20:00	2
6272	99	28	0,25	cyclictest	26522	-21	dpkg	23:20:00	2
6272	99	28	0,25	cyclictest	2433	-21	latency_hist	22:10:00	2
6272	99	28	0,1	cyclictest	0	-21	swapper/2	21:05:01	2
6272	99	27	6,18	cyclictest	0	-21	swapper/2	21:10:24	2
6272	99	27	1,22	cyclictest	14966	-21	sed	21:10:00	2
6272	99	27	1,22	cyclictest	11763	-21	ntpq	00:10:30	2
6272	99	27	1,22	cyclictest	10310	-21	lsb_release	19:20:00	2
6272	99	27	0,24	cyclictest	9892	-21	sed	20:50:30	2
6272	99	27	0,23	cyclictest	11901	-21	cron	19:25:00	2
6272	99	27	0,1	cyclictest	0	-21	swapper/2	22:35:01	2
6272	99	27	0,1	cyclictest	0	-21	swapper/2	22:35:01	2
6277	99	26	6,5	cyclictest	31	-21	ksoftirqd/3	19:10:02	3
6272	99	26	3,16	cyclictest	20260	-21	apt-get	23:00:19	2
6272	99	26	2,18	cyclictest	28358	-21	apt-get	23:25:14	2
6272	99	26	0,23	cyclictest	32678	-21	grep	22:00:26	2
6272	99	26	0,23	cyclictest	1746	-21	ps	23:40:35	2
6272	99	26	0,1	cyclictest	0	-21	swapper/2	23:50:33	2
6264	99	26	20,4	cyclictest	9	-21	ksoftirqd/0	23:35:26	0
6277	99	25	0,4	cyclictest	0	-21	swapper/3	20:05:38	3
6272	99	25	0,21	cyclictest	27045	-21	cut	23:20:20	2
6272	99	25	0,1	cyclictest	0	-21	swapper/2	19:50:21	2
6277	99	24	2,7	cyclictest	31	-21	ksoftirqd/3	00:35:23	3
6277	99	24	12,10	cyclictest	1021	-21	apt-get	20:29:59	3
6272	99	24	1,20	cyclictest	6291	-21	uname	19:10:00	2
6270	99	24	14,8	cyclictest	8281	-21	cat	00:00:24	1
6277	99	23	6,9	cyclictest	30	1	rcuc/3	20:45:22	3
6264	99	23	16,4	cyclictest	6405	-21	apt-key	22:20:02	0
6277	99	22	2,5	cyclictest	528	-21	cron	23:39:59	3
6277	99	22	2,17	cyclictest	12563	-21	ls	00:15:00	3
6277	99	22	15,5	cyclictest	16365	-21	cat	00:25:20	3
6277	99	22	14,6	cyclictest	30961	-21	snmp_o5powerctl	23:30:29	3
6277	99	22	14,6	cyclictest	18698	-21	perl	21:20:23	3
6277	99	22	11,9	cyclictest	13312	-21	latency_hist	21:05:01	3
6277	99	22	0,8	cyclictest	31	-21	ksoftirqd/3	21:10:33	3
6272	99	22	0,19	cyclictest	19373	-21	ntpq	22:55:27	2
6277	99	21	2,8	cyclictest	31	-21	ksoftirqd/3	19:10:02	3
6277	99	21	14,5	cyclictest	19603	-21	grep	22:55:28	3
6277	99	21	12,6	cyclictest	9417	-21	ntpq	20:50:24	3
6277	99	21	11,8	cyclictest	1213	-21	sshd	21:50:29	3
6277	99	21	0,8	cyclictest	31	-21	ksoftirqd/3	21:15:25	3
6277	99	21	0,8	cyclictest	31	-21	ksoftirqd/3	00:00:16	3
6277	99	21	0,7	cyclictest	31	-21	ksoftirqd/3	21:25:31	3
6277	99	21	0,7	cyclictest	19429	-21	munin-run	00:35:00	3
6277	99	21	0,6	cyclictest	737	-21	cron	21:00:01	3
6277	99	21	0,6	cyclictest	23260	-21	lsb_release	20:00:00	3
6270	99	21	2,13	cyclictest	26955	-21	apt-get	21:45:18	1
6270	99	21	13,6	cyclictest	16358	-21	snmp_o5powerctl	19:35:27	1
6270	99	21	13,6	cyclictest	12564	-21	grep	19:25:19	1
^Timer ^*Wakeup (latency=timer+wakeup+contextswitch)


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