[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

19991027: current data feed volumes (fwd)


===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================

---------- Forwarded message ----------
Date: Wed, 27 Oct 1999 15:50:29 -0600
From: Steve Chiswell <address@hidden>
To: Russ Rew <address@hidden>
Subject: 19991027: current data feed volumes


Just an additional explanation about the CONDUIT data volume...

Since the fire at NCEP, the amount data being carried by CONDUIT is less
than it had been previously. In particular, NCEP is not cuurrently providing
ensemble grids, nor MRF grids from day 11-17. Also, the hourly RUC2 data
is being provided only on pressure levels from FSL while previously it had
been provided on pressure and hybrid levels. Prior to the NCEP fire,
we had been seeing 2-3 GB per day. 

Also there was an ldm-users exchange between Dave Knight and Bill Noon about 
network problems while I was away which would affect the amount of NMC2
data reaching shemp if this was during your sampling period. 
I do not know the time frame of the UCAR outage...maybe Robb knows.
This network outage should not affect the data being received from NOAAport
internally, but potentially would effect PCWS, FSL2, NLDN, MCIDAS and NMC2.

Chiz





On Wed, 27 Oct 1999, Russ Rew wrote:

> Hi,
> 
> Just in case anyone's interested, here's some data I gathered over the
> weekend from the LDM running on shemp, which is getting all the
> standard data feeds plus three experimental feeds that I've also
> included separately at the bottom of the table.  These statistics were
> digested from more voluminous raw statistics I also got on all the
> product sizes, including histograms of the product size distributions
> for every feed.  This data is for a 24-hour period ending at 22:43Z 25
> Oct 1999, during which there were a total of 5.8 Gbytes (365500
> products) for all feed types, which works out to about 67000
> bytes/sec, 241 Mbytes/hour on average.
> 
>            Peak       Mean
> Mbytes/day Mbytes/hr  Mbytes/hr Products    Data feed
> ---------  ---------  --------- --------    -----------
>  977         87.4       40.7       41816    CONDUIT (NCEP models)
>  660        134.0       27.5      123690    NOAAPORT binary (GRIB, BUFR, ...)
>  226         13.1        9.4       20410    NIDS radar
>  162          8.7        6.8         221    McIDAS images
>  103         13.3        4.3      125874    NOAAPORT text (DDPLUS, IDS, ...)
>   45          1.9        1.9         264    FSL wind profiler
>   32          1.8        1.3         144    ACARS
>   39          0.004      0.002       240    NLDN lightning
>                                   
> 3331        187.0      138.0        3690    NOAAPORT imagery, compressed
>  229         17.0        9.6       48641    NOAAPORT NIDS, other radar
>   24         20.4        1.0         507    CONDUIT supplementary grids
> 
> --Russ
>