[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[IDD #BKI-822215]: LDM feed sites
- Subject: [IDD #BKI-822215]: LDM feed sites
- Date: Mon, 22 Jun 2009 14:30:02 -0600
Hi Adam,
We are curious as to the size of your LDM queue on tornado. We ask
because the volume of data you are receiving is high:
http://www.unidata.ucar.edu/cgi-bin/rtstats/rtstats_summary_volume?tornado.geos.ulm.edu
Data Volume Summary for tornado.geos.ulm.edu
Maximum hourly volume 9322.126 M bytes/hour
Average hourly volume 4661.935 M bytes/hour
Average products per hour 187700 prods/hour
Feed Average Maximum Products
(M byte/hour) (M byte/hour) number/hour
NEXRAD2 1609.383 [ 34.522%] 2206.471 55634.383
CONDUIT 1476.247 [ 31.666%] 4661.303 40444.170
NGRID 612.111 [ 13.130%] 1402.037 14442.830
NEXRAD3 297.440 [ 6.380%] 370.064 29893.638
HDS 208.653 [ 4.476%] 436.922 17260.191
FNMOC 173.058 [ 3.712%] 1850.444 1801.617
NIMAGE 158.075 [ 3.391%] 279.354 191.596
FNEXRAD 65.697 [ 1.409%] 82.139 50.511
IDS|DDPLUS 29.993 [ 0.643%] 50.081 27663.340
UNIWISC 26.050 [ 0.559%] 33.047 30.085
GEM 3.763 [ 0.081%] 29.473 258.000
FSL2 1.345 [ 0.029%] 1.604 20.000
LIGHTNING 0.120 [ 0.003%] 0.249 9.213
If your LDM queue is too small, or if tornado is not fast enough to
process data out of the queue, you would be seeing a situation where
data is being received, but some part of it is never seen on disk (i.e.,
products get overwritten in your LDM queue before the pqact invocation(s)
have had a chance to act on them).
Again, just a curiosity. The size of the queue should have no effect
on the latencies you are seeing...
Cheers,
Tom
--
****************************************************************************
Unidata User Support UCAR Unidata Program
(303) 497-8642 P.O. Box 3000
address@hidden Boulder, CO 80307
----------------------------------------------------------------------------
Unidata HomePage http://www.unidata.ucar.edu
****************************************************************************
Ticket Details
===================
Ticket ID: BKI-822215
Department: Support IDD
Priority: Normal
Status: Closed