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20030512: Delayed data at U Washington
- Subject: 20030512: Delayed data at U Washington
- Date: Mon, 12 May 2003 15:39:49 -0600
>From: Harry Edmon <address@hidden>
>Organization: University of Washington
>Keywords: 200305121626.h4CGQ07U025551 IDD
Hi Harry,
>I tried several things - I think what worked was rebooting sunny.
OK.
>And I used to have everything split - but with LDM 6 I was told not to. Now -
>what is the REAL answer?
The real answer is _IF_ you start to see latencies build, then split the
feeds. If you don't see latencies build, then there is no need to split
the feeds. I'm sorry I wasn't clear enough in my previous email.
Thanks for the info on sunny...
Tom
>Unidata Support <address@hidden> wrote:
>> >From: Harry Edmon <address@hidden>
>> >Organization: University of Washington
>> >Keywords: 200305121626.h4CGQ07U025551 IDD
>>
>> Hi Harry,
>>
>> >sunny is has been over an hour behind on its data feed since Saturday night
> .
>> >I am trying to figure out why.
>>
>> We saw the latencies on sunny drop to near zero right after 18 UTC.
>> Did you find something at UW? If so, would you share the information
>> with us? Thanks.
>>
>> On another note, I see that your data request from sunny to thelma is:
>>
>> May 12 17:40:47 thelma.ucar.edu sunny(feed)[13756]: up6.c:299: Starting
>> Up(6.0.10): 20030512164338.968 TS_ENDT {{NNEXRAD|DIFAX|FNEXRAD|FSL2|WMO,
>> ".*"}}
>>
>> i.e., all of NNEXRAD|DIFAX|FNEXRAD|FSL2|WMO on a single rpc.ldmd
>>
>> If you start to see latencies build, it would probably be a good idea
>> to split your data requests. What I have in mind is something lik:
>>
>> request NNEXRAD ".*" thelma.ucar.edu
>> request DIFAX|FNEXRAD|HRS ".*" thelma.ucar.edu
>> request IDS|DDPLUS|DIFAX ".*" thelma.ucar.edu
>>
>> The idea here is to spit the total request into two or three separate
>> requests that partition the numbers (not volume) of product on each
>> feed more-or-less evenly. This may not generally be necessary at UW
>> since your IDD reception is typically quite good.
>>
>> Just a thought...
>>
>> Tom
>--
> Dr. Harry Edmon E-MAIL: address@hidden
> 206-543-0547 address@hidden
> Dept of Atmospheric Sciences FAX: 206-543-0308
> University of Washington, Box 351640, Seattle, WA 98195-1640
>